

<!--XBRL Document Created with WebFilings-->
<xsd:schema attributeFormDefault="unqualified" elementFormDefault="qualified" targetNamespace="http://www.piedmontreit.com/20111231" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:nonnum="http://www.xbrl.org/dtr/type/non-numeric" xmlns:num="http://www.xbrl.org/dtr/type/numeric" xmlns:pdm="http://www.piedmontreit.com/20111231" xmlns:us-types="http://fasb.org/us-types/2011-01-31" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
  <xsd:import namespace="http://fasb.org/us-gaap/2011-01-31" schemaLocation="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd" />
  <xsd:import namespace="http://fasb.org/us-roles/2011-01-31" schemaLocation="http://xbrl.fasb.org/us-gaap/2011/elts/us-roles-2011-01-31.xsd" />
  <xsd:import namespace="http://fasb.org/us-types/2011-01-31" schemaLocation="http://xbrl.fasb.org/us-gaap/2011/elts/us-types-2011-01-31.xsd" />
  <xsd:import namespace="http://www.xbrl.org/2003/instance" schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd" />
  <xsd:import namespace="http://www.xbrl.org/2003/linkbase" schemaLocation="http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd" />
  <xsd:import namespace="http://www.xbrl.org/2009/arcrole/fact-explanatoryFact" schemaLocation="http://www.xbrl.org/lrr/arcrole/factExplanatory-2009-12-16.xsd" />
  <xsd:import namespace="http://www.xbrl.org/2009/role/negated" schemaLocation="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd" />
  <xsd:import namespace="http://www.xbrl.org/2009/role/net" schemaLocation="http://www.xbrl.org/lrr/role/net-2009-12-16.xsd" />
  <xsd:import namespace="http://www.xbrl.org/dtr/type/non-numeric" schemaLocation="http://www.xbrl.org/dtr/type/nonNumeric-2009-12-16.xsd" />
  <xsd:import namespace="http://www.xbrl.org/dtr/type/numeric" schemaLocation="http://www.xbrl.org/dtr/type/numeric-2009-12-16.xsd" />
  <xsd:import namespace="http://xbrl.org/2005/xbrldt" schemaLocation="http://www.xbrl.org/2005/xbrldt-2005.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/country/2011-01-31" schemaLocation="http://xbrl.sec.gov/country/2011/country-2011-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/currency/2011-01-31" schemaLocation="http://xbrl.sec.gov/currency/2011/currency-2011-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/dei/2011-01-31" schemaLocation="http://xbrl.sec.gov/dei/2011/dei-2011-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/exch/2011-01-31" schemaLocation="http://xbrl.sec.gov/exch/2011/exch-2011-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/invest/2011-01-31" schemaLocation="http://xbrl.sec.gov/invest/2011/invest-2011-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/naics/2011-01-31" schemaLocation="http://xbrl.sec.gov/naics/2011/naics-2011-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/sic/2011-01-31" schemaLocation="http://xbrl.sec.gov/sic/2011/sic-2011-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/stpr/2011-01-31" schemaLocation="http://xbrl.sec.gov/stpr/2011/stpr-2011-01-31.xsd" />
  <xsd:annotation>
    <xsd:appinfo>
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="pdm-20111231_cal.xml" xlink:role="http://www.xbrl.org/2003/role/calculationLinkbaseRef" xlink:type="simple" />
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="pdm-20111231_def.xml" xlink:role="http://www.xbrl.org/2003/role/definitionLinkbaseRef" xlink:type="simple" />
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="pdm-20111231_lab.xml" xlink:role="http://www.xbrl.org/2003/role/labelLinkbaseRef" xlink:type="simple" />
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="pdm-20111231_pre.xml" xlink:role="http://www.xbrl.org/2003/role/presentationLinkbaseRef" xlink:type="simple" />
      <link:roleType id="AcquisitionsOfRealEstateAssets" roleURI="http://www.piedmontreit.com/role/AcquisitionsOfRealEstateAssets">
        <link:definition>2104100 - Disclosure - Acquisitions of Real Estate Assets</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AcquisitionsOfRealEstateAssetsDetails" roleURI="http://www.piedmontreit.com/role/AcquisitionsOfRealEstateAssetsDetails">
        <link:definition>2404402 - Disclosure - Acquisitions of Real Estate Assets (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AcquisitionsOfRealEstateAssetsTables" roleURI="http://www.piedmontreit.com/role/AcquisitionsOfRealEstateAssetsTables">
        <link:definition>2304301 - Disclosure - Acquisitions of Real Estate Assets (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CommitmentsAndContingencies" roleURI="http://www.piedmontreit.com/role/CommitmentsAndContingencies">
        <link:definition>2113100 - Disclosure - Commitments and Contingencies</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CommitmentsAndContingenciesDetails" roleURI="http://www.piedmontreit.com/role/CommitmentsAndContingenciesDetails">
        <link:definition>2413402 - Disclosure - Commitments and Contingencies (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CommitmentsAndContingenciesTables" roleURI="http://www.piedmontreit.com/role/CommitmentsAndContingenciesTables">
        <link:definition>2313301 - Disclosure - Commitments and Contingencies (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedBalanceSheets" roleURI="http://www.piedmontreit.com/role/ConsolidatedBalanceSheets">
        <link:definition>1001000 - Statement - Consolidated Balance Sheets</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedBalanceSheetsParenthetical" roleURI="http://www.piedmontreit.com/role/ConsolidatedBalanceSheetsParenthetical">
        <link:definition>1001500 - Statement - Consolidated Balance Sheets (Parenthetical)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedStatementsOfCashFlows" roleURI="http://www.piedmontreit.com/role/ConsolidatedStatementsOfCashFlows">
        <link:definition>1004000 - Statement - Consolidated Statements of Cash Flows</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedStatementsOfIncome" roleURI="http://www.piedmontreit.com/role/ConsolidatedStatementsOfIncome">
        <link:definition>1002000 - Statement - Consolidated Statements of Income</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedStatementsOfStockholdersEquity" roleURI="http://www.piedmontreit.com/role/ConsolidatedStatementsOfStockholdersEquity">
        <link:definition>1003000 - Statement - Consolidated Statements of Stockholders' Equity</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedStatementsOfStockholdersEquityParenthetical" roleURI="http://www.piedmontreit.com/role/ConsolidatedStatementsOfStockholdersEquityParenthetical">
        <link:definition>1003500 - Statement - Consolidated Statements of Stockholders' Equity (Parenthetical)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DerivativeInstruments" roleURI="http://www.piedmontreit.com/role/DerivativeInstruments">
        <link:definition>2110100 - Disclosure - Derivative Instruments</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DerivativeInstrumentsDetails" roleURI="http://www.piedmontreit.com/role/DerivativeInstrumentsDetails">
        <link:definition>2410402 - Disclosure - Derivative Instruments (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DerivativeInstrumentsTables" roleURI="http://www.piedmontreit.com/role/DerivativeInstrumentsTables">
        <link:definition>2310301 - Disclosure - Derivative Instruments (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DiscontinuedOperations" roleURI="http://www.piedmontreit.com/role/DiscontinuedOperations">
        <link:definition>2117100 - Disclosure - Discontinued Operations</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DiscontinuedOperationsDetails" roleURI="http://www.piedmontreit.com/role/DiscontinuedOperationsDetails">
        <link:definition>2417402 - Disclosure - Discontinued Operations (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DiscontinuedOperationsTables" roleURI="http://www.piedmontreit.com/role/DiscontinuedOperationsTables">
        <link:definition>2317301 - Disclosure - Discontinued Operations (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DocumentAndEntityInformation" roleURI="http://www.piedmontreit.com/role/DocumentAndEntityInformation">
        <link:definition>0001000 - Document - Document and Entity Information</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EarningsPerShare" roleURI="http://www.piedmontreit.com/role/EarningsPerShare">
        <link:definition>2115100 - Disclosure - Earnings Per Share</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EarningsPerShareDetails" roleURI="http://www.piedmontreit.com/role/EarningsPerShareDetails">
        <link:definition>2415402 - Disclosure - Earnings Per Share (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EarningsPerShareTables" roleURI="http://www.piedmontreit.com/role/EarningsPerShareTables">
        <link:definition>2315301 - Disclosure - Earnings Per Share (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueMeasurements" roleURI="http://www.piedmontreit.com/role/FairValueMeasurements">
        <link:definition>2111100 - Disclosure - Fair Value Measurements</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueMeasurementsDetails" roleURI="http://www.piedmontreit.com/role/FairValueMeasurementsDetails">
        <link:definition>2411402 - Disclosure - Fair Value Measurements (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueMeasurementsTables" roleURI="http://www.piedmontreit.com/role/FairValueMeasurementsTables">
        <link:definition>2311301 - Disclosure - Fair Value Measurements (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ImpairmentOfCertainRealEstateAssets" roleURI="http://www.piedmontreit.com/role/ImpairmentOfCertainRealEstateAssets">
        <link:definition>2112100 - Disclosure - Impairment of Certain Real Estate Assets</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ImpairmentOfCertainRealEstateAssetsDetails" roleURI="http://www.piedmontreit.com/role/ImpairmentOfCertainRealEstateAssetsDetails">
        <link:definition>2412402 - Disclosure - Impairment of Certain Real Estate Assets (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ImpairmentOfCertainRealEstateAssetsTables" roleURI="http://www.piedmontreit.com/role/ImpairmentOfCertainRealEstateAssetsTables">
        <link:definition>2312301 - Disclosure - Impairment of Certain Real Estate Assets (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxes" roleURI="http://www.piedmontreit.com/role/IncomeTaxes">
        <link:definition>2120100 - Disclosure - Income Taxes</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesDetails" roleURI="http://www.piedmontreit.com/role/IncomeTaxesDetails">
        <link:definition>2420402 - Disclosure - Income Taxes (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesTables" roleURI="http://www.piedmontreit.com/role/IncomeTaxesTables">
        <link:definition>2320301 - Disclosure - Income Taxes (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LineOfCreditAndNotesPayable" roleURI="http://www.piedmontreit.com/role/LineOfCreditAndNotesPayable">
        <link:definition>2108100 - Disclosure - Line of Credit and Notes Payable</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LineOfCreditAndNotesPayableDetails" roleURI="http://www.piedmontreit.com/role/LineOfCreditAndNotesPayableDetails">
        <link:definition>2408402 - Disclosure - Line of Credit and Notes Payable (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LineOfCreditAndNotesPayableTables" roleURI="http://www.piedmontreit.com/role/LineOfCreditAndNotesPayableTables">
        <link:definition>2308301 - Disclosure - Line of Credit and Notes Payable (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="NotesReceivable" roleURI="http://www.piedmontreit.com/role/NotesReceivable">
        <link:definition>2106100 - Disclosure - Notes Receivable</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="NotesReceivableDetails" roleURI="http://www.piedmontreit.com/role/NotesReceivableDetails">
        <link:definition>2406402 - Disclosure - Notes Receivable (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="NotesReceivableTables" roleURI="http://www.piedmontreit.com/role/NotesReceivableTables">
        <link:definition>2306301 - Disclosure - Notes Receivable (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="OperatingLeases" roleURI="http://www.piedmontreit.com/role/OperatingLeases">
        <link:definition>2116100 - Disclosure - Operating Leases</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="OperatingLeasesDetails" roleURI="http://www.piedmontreit.com/role/OperatingLeasesDetails">
        <link:definition>2416402 - Disclosure - Operating Leases (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="OperatingLeasesTables" roleURI="http://www.piedmontreit.com/role/OperatingLeasesTables">
        <link:definition>2316301 - Disclosure - Operating Leases (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="Organization" roleURI="http://www.piedmontreit.com/role/Organization">
        <link:definition>2101100 - Disclosure - Organization</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="OrganizationDetails" roleURI="http://www.piedmontreit.com/role/OrganizationDetails">
        <link:definition>2401402 - Disclosure - Organization (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="OrganizationTables" roleURI="http://www.piedmontreit.com/role/OrganizationTables">
        <link:definition>2301301 - Disclosure - Organization (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="QuarterlyResultsUnaudited" roleURI="http://www.piedmontreit.com/role/QuarterlyResultsUnaudited">
        <link:definition>2121100 - Disclosure - Quarterly Results (unaudited)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="QuarterlyResultsUnauditedDetails" roleURI="http://www.piedmontreit.com/role/QuarterlyResultsUnauditedDetails">
        <link:definition>2421402 - Disclosure - Quarterly Results (unaudited) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="QuarterlyResultsUnauditedTables" roleURI="http://www.piedmontreit.com/role/QuarterlyResultsUnauditedTables">
        <link:definition>2321301 - Disclosure - Quarterly Results (unaudited) (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RecapitalizationListingAndOfferingOfCommonStock" roleURI="http://www.piedmontreit.com/role/RecapitalizationListingAndOfferingOfCommonStock">
        <link:definition>2103100 - Disclosure - Recapitalization, Listing and Offering of Common Stock</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RecapitalizationListingAndOfferingOfCommonStockDetails" roleURI="http://www.piedmontreit.com/role/RecapitalizationListingAndOfferingOfCommonStockDetails">
        <link:definition>2403401 - Disclosure - Recapitalization, Listing and Offering of Common Stock (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ScheduleIiiRealEstateAssetsAndAccumulatedDepreciation" roleURI="http://www.piedmontreit.com/role/ScheduleIiiRealEstateAssetsAndAccumulatedDepreciation">
        <link:definition>2123100 - Schedule - Schedule III - Real Estate Assets and Accumulated Depreciation</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ScheduleIiiRealEstateAssetsAndAccumulatedDepreciationDetails" roleURI="http://www.piedmontreit.com/role/ScheduleIiiRealEstateAssetsAndAccumulatedDepreciationDetails">
        <link:definition>2423401 - Schedule - Schedule III - Real Estate Assets and Accumulated Depreciation (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockBasedCompensation" roleURI="http://www.piedmontreit.com/role/StockBasedCompensation">
        <link:definition>2114100 - Disclosure - Stock Based Compensation</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockBasedCompensationDetails" roleURI="http://www.piedmontreit.com/role/StockBasedCompensationDetails">
        <link:definition>2414402 - Disclosure - Stock Based Compensation (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockBasedCompensationNarrativeDetails" roleURI="http://www.piedmontreit.com/role/StockBasedCompensationNarrativeDetails">
        <link:definition>2414403 - Disclosure - Stock Based Compensation (Narrative) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockBasedCompensationTables" roleURI="http://www.piedmontreit.com/role/StockBasedCompensationTables">
        <link:definition>2314301 - Disclosure - Stock Based Compensation (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SubsequentEvents" roleURI="http://www.piedmontreit.com/role/SubsequentEvents">
        <link:definition>2122100 - Disclosure - Subsequent Events</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SubsequentEventsDetails" roleURI="http://www.piedmontreit.com/role/SubsequentEventsDetails">
        <link:definition>2422401 - Disclosure - Subsequent Events (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SummaryOfSignificantAccountingPolicies" roleURI="http://www.piedmontreit.com/role/SummaryOfSignificantAccountingPolicies">
        <link:definition>2102100 - Disclosure - Summary of Significant Accounting Policies</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SummaryOfSignificantAccountingPoliciesDetails" roleURI="http://www.piedmontreit.com/role/SummaryOfSignificantAccountingPoliciesDetails">
        <link:definition>2402403 - Disclosure - Summary of Significant Accounting Policies (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SummaryOfSignificantAccountingPoliciesPolicies" roleURI="http://www.piedmontreit.com/role/SummaryOfSignificantAccountingPoliciesPolicies">
        <link:definition>2202201 - Disclosure - Summary of Significant Accounting Policies (Policies)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SummaryOfSignificantAccountingPoliciesTables" roleURI="http://www.piedmontreit.com/role/SummaryOfSignificantAccountingPoliciesTables">
        <link:definition>2302302 - Disclosure - Summary of Significant Accounting Policies (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SupplementalDisclosuresOfNoncashActivities" roleURI="http://www.piedmontreit.com/role/SupplementalDisclosuresOfNoncashActivities">
        <link:definition>2118100 - Disclosure - Supplemental Disclosures of Noncash Activities</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SupplementalDisclosuresOfNoncashActivitiesDetails" roleURI="http://www.piedmontreit.com/role/SupplementalDisclosuresOfNoncashActivitiesDetails">
        <link:definition>2418402 - Disclosure - Supplemental Disclosures of Noncash Activities (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SupplementalDisclosuresOfNoncashActivitiesTables" roleURI="http://www.piedmontreit.com/role/SupplementalDisclosuresOfNoncashActivitiesTables">
        <link:definition>2318301 - Disclosure - Supplemental Disclosures of Noncash Activities (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="TenantReceivables" roleURI="http://www.piedmontreit.com/role/TenantReceivables">
        <link:definition>2105100 - Disclosure - Tenant Receivables</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="TenantReceivablesDetails" roleURI="http://www.piedmontreit.com/role/TenantReceivablesDetails">
        <link:definition>2405402 - Disclosure - Tenant Receivables (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="TenantReceivablesTables" roleURI="http://www.piedmontreit.com/role/TenantReceivablesTables">
        <link:definition>2305301 - Disclosure - Tenant Receivables (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="UnconsolidatedJointVentures" roleURI="http://www.piedmontreit.com/role/UnconsolidatedJointVentures">
        <link:definition>2107100 - Disclosure - Unconsolidated Joint Ventures</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="UnconsolidatedJointVenturesDetails" roleURI="http://www.piedmontreit.com/role/UnconsolidatedJointVenturesDetails">
        <link:definition>2407402 - Disclosure - Unconsolidated Joint Ventures (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="UnconsolidatedJointVenturesTables" roleURI="http://www.piedmontreit.com/role/UnconsolidatedJointVenturesTables">
        <link:definition>2307301 - Disclosure - Unconsolidated Joint Ventures (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="VariableInterestEntities" roleURI="http://www.piedmontreit.com/role/VariableInterestEntities">
        <link:definition>2109100 - Disclosure - Variable Interest Entities</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="VariableInterestEntitiesDetails" roleURI="http://www.piedmontreit.com/role/VariableInterestEntitiesDetails">
        <link:definition>2409402 - Disclosure - Variable Interest Entities (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="VariableInterestEntitiesTables" roleURI="http://www.piedmontreit.com/role/VariableInterestEntitiesTables">
        <link:definition>2309301 - Disclosure - Variable Interest Entities (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
    </xsd:appinfo>
  </xsd:annotation>
  <xsd:element abstract="true" id="pdm_A1201EquityLlcMember" name="A1201EquityLlcMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_A1225EquityLlcMember" name="A1225EquityLlcMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_AboveMarketLeasesMember" name="AboveMarketLeasesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_AbsorptionPeriodCostsMember" name="AbsorptionPeriodCostsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_AcquisitionsAbstract" name="AcquisitionsAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="pdm_AdditionalPaidInCapitalChangeInRedeemableCommonStockOutstanding" name="AdditionalPaidInCapitalChangeInRedeemableCommonStockOutstanding" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="pdm_AdjustmentForAmortizationContinuingOperations" name="AdjustmentForAmortizationContinuingOperations" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="pdm_AdjustmentsToAdditionalPaidInCapitalDividendReinvestmentPlanPremiumOnStockSale" name="AdjustmentsToAdditionalPaidInCapitalDividendReinvestmentPlanPremiumOnStockSale" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="pdm_AmortizationOfAboveAndBelowMarketLeases" name="AmortizationOfAboveAndBelowMarketLeases" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="pdm_AmortizationOfIntangibleLeaseCostsTableTextBlock" name="AmortizationOfIntangibleLeaseCostsTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="pdm_AmortizationOfIntangibleLeaseOriginationCostsAndAbsorptionPeriodCosts" name="AmortizationOfIntangibleLeaseOriginationCostsAndAbsorptionPeriodCosts" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="pdm_AmortizationOfLeaseIncentives" name="AmortizationOfLeaseIncentives" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_AonCenterChicago487MortgageNoteMember" name="AonCenterChicago487MortgageNoteMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_AonCenterChicago570MortgageNoteMember" name="AonCenterChicago570MortgageNoteMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_AonCenterMember" name="AonCenterMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="pdm_AssetsAssumedUponConsolidationOfVariableInterestEntity" name="AssetsAssumedUponConsolidationOfVariableInterestEntity" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_AuburnHillsCorporateCenterBuildingMember" name="AuburnHillsCorporateCenterBuildingMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_BaseRateMember" name="BaseRateMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_BelowMarketLeasesMember" name="BelowMarketLeasesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_BrakerPointeIiiMember" name="BrakerPointeIiiMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_BridgewaterCrossing200Member" name="BridgewaterCrossing200Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_BridgewaterCrossing400Member" name="BridgewaterCrossing400Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_BroadStreet60Member" name="BroadStreet60Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_BrooksideParkway3750Member" name="BrooksideParkway3750Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_Building2020Member" name="Building2020Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_CabotDrive2300Member" name="CabotDrive2300Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_CentralStreet90Member" name="CentralStreet90Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_ChandlerForumMember" name="ChandlerForumMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_ChicagoMember" name="ChicagoMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_ClarendonBoulevard3100Member" name="ClarendonBoulevard3100Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_CollectibilityOfTenantReimbursementsMember" name="CollectibilityOfTenantReimbursementsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="pdm_CommitmentToProvideFundingToTenantsForCapitalImprovements" name="CommitmentToProvideFundingToTenantsForCapitalImprovements" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="pdm_CommitmentsAndContingenciesAbstract" name="CommitmentsAndContingenciesAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_CommonAreaMaintenanceCostsMember" name="CommonAreaMaintenanceCostsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="pdm_CommonStockDividendsCapitalGainsPercent" name="CommonStockDividendsCapitalGainsPercent" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="pdm_CommonStockDividendsOrdinaryIncomePercent" name="CommonStockDividendsOrdinaryIncomePercent" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="pdm_CommonStockDividendsPercent" name="CommonStockDividendsPercent" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="pdm_CommonStockDividendsReturnOfCapitalPercent" name="CommonStockDividendsReturnOfCapitalPercent" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_ConnectionDrive6011Member" name="ConnectionDrive6011Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_ConnectionDrive6021Member" name="ConnectionDrive6021Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_ConnectionDrive6031Member" name="ConnectionDrive6031Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_ConsolidatedBalanceSheetsParentheticalAbstract" name="ConsolidatedBalanceSheetsParentheticalAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_ConsolidatedJointVentureMember" name="ConsolidatedJointVentureMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_CopperRidgeCenterMember" name="CopperRidgeCenterMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_CorporateBoulevard9200Member" name="CorporateBoulevard9200Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_CorporateBoulevard9211Member" name="CorporateBoulevard9211Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_CorporateBoulevard9221Member" name="CorporateBoulevard9221Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_CorporateCourt5000Member" name="CorporateCourt5000Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_CorporateDrive600Member" name="CorporateDrive600Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_CrescentRidgeIiMember" name="CrescentRidgeIiMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_CrownColonyDrive1200Member" name="CrownColonyDrive1200Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_DallasParkway3900Member" name="DallasParkway3900Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="pdm_DebtInstrumentMaturityTerm" name="DebtInstrumentMaturityTerm" nillable="true" substitutionGroup="xbrli:item" type="us-types:durationStringItemType" xbrli:periodType="duration" />
  <xsd:element id="pdm_DebtWeightedAverageInterestRateExcludingDiscontinuedOperation" name="DebtWeightedAverageInterestRateExcludingDiscontinuedOperation" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="pdm_DeferredRevenueAmortization" name="DeferredRevenueAmortization" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="pdm_DeferredRevenueAmortizationThereafter" name="DeferredRevenueAmortizationThereafter" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="pdm_DeferredRevenueAmortizationYearFive" name="DeferredRevenueAmortizationYearFive" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="pdm_DeferredRevenueAmortizationYearFour" name="DeferredRevenueAmortizationYearFour" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="pdm_DeferredRevenueAmortizationYearOne" name="DeferredRevenueAmortizationYearOne" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="pdm_DeferredRevenueAmortizationYearThree" name="DeferredRevenueAmortizationYearThree" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="pdm_DeferredRevenueAmortizationYearTwo" name="DeferredRevenueAmortizationYearTwo" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="pdm_DepreciationContinuingOperations" name="DepreciationContinuingOperations" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_DerivativeInstrumentsAbstract" name="DerivativeInstrumentsAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_DeschutesMember" name="DeschutesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_DesertCanyon300Member" name="DesertCanyon300Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_DiscontinuedOperationsAbstract" name="DiscontinuedOperationsAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="pdm_DisposalGroupIncludingDiscontinuedOperationAmortization" name="DisposalGroupIncludingDiscontinuedOperationAmortization" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="pdm_DisposalGroupIncludingDiscontinuedOperationDepreciation" name="DisposalGroupIncludingDiscontinuedOperationDepreciation" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="pdm_DisposalGroupIncludingDiscontinuedOperationGeneralAndAdministrativeExpense" name="DisposalGroupIncludingDiscontinuedOperationGeneralAndAdministrativeExpense" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="pdm_DisposalGroupIncludingDiscontinuedOperationInterestAndOtherIncomeExpense" name="DisposalGroupIncludingDiscontinuedOperationInterestAndOtherIncomeExpense" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="pdm_DisposalGroupIncludingDiscontinuedOperationLeaseTerminationIncome" name="DisposalGroupIncludingDiscontinuedOperationLeaseTerminationIncome" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="pdm_DisposalGroupIncludingDiscontinuedOperationLossOnWriteDown" name="DisposalGroupIncludingDiscontinuedOperationLossOnWriteDown" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="pdm_DisposalGroupIncludingDiscontinuedOperationPropertyOperatingCosts" name="DisposalGroupIncludingDiscontinuedOperationPropertyOperatingCosts" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="pdm_DisposalGroupIncludingDiscontinuedOperationRentalIncome" name="DisposalGroupIncludingDiscontinuedOperationRentalIncome" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="pdm_DisposalGroupIncludingDiscontinuedOperationTenantReimbursement" name="DisposalGroupIncludingDiscontinuedOperationTenantReimbursement" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="pdm_DisposalGroupIncludingDiscontinuedOtherIncomeExpense" name="DisposalGroupIncludingDiscontinuedOtherIncomeExpense" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="pdm_DividendReinvestmentPlanShareholdersDiscount" name="DividendReinvestmentPlanShareholdersDiscount" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="pdm_DividendsMinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHoldersAndStockIssuedDuringPeriodValueDividendReinvestmentPlan" name="DividendsMinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHoldersAndStockIssuedDuringPeriodValueDividendReinvestmentPlan" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_DocumentAndEntityInformationAbstract" name="DocumentAndEntityInformationAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_DupreeMember" name="DupreeMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_DurhamAvenue1111Member" name="DurhamAvenue1111Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_EastColoradoBoulevard1055Member" name="EastColoradoBoulevard1055Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_EastpointIMember" name="EastpointIMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_EastpointIiMember" name="EastpointIiMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_EastpointeCorporateCenterMember" name="EastpointeCorporateCenterMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_EnclaveParkway1200Member" name="EnclaveParkway1200Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_EnclaveParkway1430Member" name="EnclaveParkway1430Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_EnterpriseWay26200Member" name="EnterpriseWay26200Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_ExpensesAbstract" name="ExpensesAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_EyeStreet1201Member" name="EyeStreet1201Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_EyeStreet1201NwAssociatesLlcMember" name="EyeStreet1201NwAssociatesLlcMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_EyeStreet1225Member" name="EyeStreet1225Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_EyeStreet1225NwAssociatesLlcMember" name="EyeStreet1225NwAssociatesLlcMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="pdm_FairValueAssetsMeasuredOnNonrecurringBasisUnobservableInputReconciliationTableTextBlock" name="FairValueAssetsMeasuredOnNonrecurringBasisUnobservableInputReconciliationTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_FairValueMeasurementOfFinancialInstrumentsAbstract" name="FairValueMeasurementOfFinancialInstrumentsAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_FairwayCenterIiMember" name="FairwayCenterIiMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_FederalGovernmentalAgenciesMember" name="FederalGovernmentalAgenciesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="pdm_FiniteLivedIntangibleLiabilitiesGross" name="FiniteLivedIntangibleLiabilitiesGross" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="pdm_FiniteLivedIntangibleLiabilitiesWeightedAverageUsefulLife" name="FiniteLivedIntangibleLiabilitiesWeightedAverageUsefulLife" nillable="true" substitutionGroup="xbrli:item" type="xbrli:decimalItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_FixedRate105MillionLoanMember" name="FixedRate105MillionLoanMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_FixedRate125MillionLoanMember" name="FixedRate125MillionLoanMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_FixedRate425MillionLoanMember" name="FixedRate425MillionLoanMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_FixedRate45MillionLoanMember" name="FixedRate45MillionLoanMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_FundIxXXiAndReitJointVentureMember" name="FundIxXXiAndReitJointVentureMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_FundXiiReitAndJointVentureMember" name="FundXiiReitAndJointVentureMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_FundXiiiAndReitJointVentureMember" name="FundXiiiAndReitJointVentureMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_FundXlXllAndReitJointVentureMember" name="FundXlXllAndReitJointVentureMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="pdm_GainsLossesOnExtinguishmentOfDebtActualCashImpact" name="GainsLossesOnExtinguishmentOfDebtActualCashImpact" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_GatehallDrive2Member" name="GatehallDrive2Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_GlenridgeHighlandsTwoMember" name="GlenridgeHighlandsTwoMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_HeadquartersDrive5601Member" name="HeadquartersDrive5601Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_HiatusRoad5601Member" name="HiatusRoad5601Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_HiddenLakeCircle110Member" name="HiddenLakeCircle110Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_HiddenLakeCircle112Member" name="HiddenLakeCircle112Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_ImpairmentOfCertainRealEstateAssetsAbstract" name="ImpairmentOfCertainRealEstateAssetsAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="pdm_IncomeLossFromContinuingOperationsAttributableToNoncontrollingInterestPerBasicShare" name="IncomeLossFromContinuingOperationsAttributableToNoncontrollingInterestPerBasicShare" nillable="true" substitutionGroup="xbrli:item" type="num:perShareItemType" xbrli:periodType="duration" />
  <xsd:element id="pdm_IncomeLossFromContinuingOperationsAttributableToNoncontrollingInterestPerDilutedShare" name="IncomeLossFromContinuingOperationsAttributableToNoncontrollingInterestPerDilutedShare" nillable="true" substitutionGroup="xbrli:item" type="num:perShareItemType" xbrli:periodType="duration" />
  <xsd:element id="pdm_IncomeLossFromEquityMethodInvestmentsActualCashImpact" name="IncomeLossFromEquityMethodInvestmentsActualCashImpact" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="pdm_IncomeReconciliationDeductionsNetAmortizationOfLeaseIntangibles" name="IncomeReconciliationDeductionsNetAmortizationOfLeaseIntangibles" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="pdm_IncomeReconciliationDeductionsRentalIncomeAccrued" name="IncomeReconciliationDeductionsRentalIncomeAccrued" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="pdm_IncomeReconciliationGainOnDisposalOfProperty" name="IncomeReconciliationGainOnDisposalOfProperty" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="pdm_IncomeReconciliationNondeductibleExpenseDepreciationAndAmortization" name="IncomeReconciliationNondeductibleExpenseDepreciationAndAmortization" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="pdm_IncomeReconciliationNondeductibleExpenseOtherExpenses" name="IncomeReconciliationNondeductibleExpenseOtherExpenses" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="pdm_IncomeReconciliationTaxableIncome" name="IncomeReconciliationTaxableIncome" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="pdm_IncomeTaxBasisNetIncomePriorToDividendsPaidDeduction" name="IncomeTaxBasisNetIncomePriorToDividendsPaidDeduction" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="pdm_IncreaseDecreaseInAccruedCapitalExpendituresAnddeferredLeaseCosts" name="IncreaseDecreaseInAccruedCapitalExpendituresAnddeferredLeaseCosts" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:periodType="duration" />
  <xsd:element id="pdm_IncreaseDecreaseInDeferredOfferingCosts" name="IncreaseDecreaseInDeferredOfferingCosts" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:periodType="duration" />
  <xsd:element id="pdm_IncreaseDecreaseInDiscountsDueToRedemptionsOfCommonStock" name="IncreaseDecreaseInDiscountsDueToRedemptionsOfCommonStock" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_IndustrialBuildingsMember" name="IndustrialBuildingsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="pdm_IntangibleLeaseLiabilitiesAccumulatedAmortization" name="IntangibleLeaseLiabilitiesAccumulatedAmortization" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="pdm_InterestRateByTypeAxis" name="InterestRateByTypeAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_InterestRateCap1Member" name="InterestRateCap1Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_InterestRateCap2Member" name="InterestRateCap2Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_InterestRateSwap1Member" name="InterestRateSwap1Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_InterestRateSwap2Member" name="InterestRateSwap2Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_InterestRateSwap3Member" name="InterestRateSwap3Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_InterestRateSwap4Member" name="InterestRateSwap4Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_InterestRateTypeDomain" name="InterestRateTypeDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_InterlockenBuilding360Member" name="InterlockenBuilding360Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="pdm_InvestmentBuildingAndBuildingImprovementsNet" name="InvestmentBuildingAndBuildingImprovementsNet" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="pdm_InvestmentDrive4685Member" name="InvestmentDrive4685Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="pdm_InvestmentsInUnconsolidatedJointVenturesPolicyTextBlock" name="InvestmentsInUnconsolidatedJointVenturesPolicyTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_JohnsCreekParkway11695Member" name="JohnsCreekParkway11695Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_KatoRoad47300BuildingMember" name="KatoRoad47300BuildingMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_LasColinasCorporateCenterIMember" name="LasColinasCorporateCenterIMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_LasColinasCorporateCenterIiMember" name="LasColinasCorporateCenterIiMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_LeaseOriginationCostsMember" name="LeaseOriginationCostsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_LetterOfCredit2February2012Member" name="LetterOfCredit2February2012Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_LetterOfCreditAgreementsByExpirationDateAxis" name="LetterOfCreditAgreementsByExpirationDateAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_LetterOfCreditAgreementsByExpirationDateDomain" name="LetterOfCreditAgreementsByExpirationDateDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_LetterOfCreditAugust2012Member" name="LetterOfCreditAugust2012Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_LetterOfCreditDecember2012Member" name="LetterOfCreditDecember2012Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_LetterOfCreditJune2012Member" name="LetterOfCreditJune2012Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="pdm_LetterOfCreditRenewalPeriod" name="LetterOfCreditRenewalPeriod" nillable="true" substitutionGroup="xbrli:item" type="us-types:durationStringItemType" xbrli:periodType="duration" />
  <xsd:element id="pdm_LiabilitiesAssumedUponConsolidationOfVariableInterestEntity" name="LiabilitiesAssumedUponConsolidationOfVariableInterestEntity" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:periodType="duration" />
  <xsd:element id="pdm_LiborInterestRateInEffect" name="LiborInterestRateInEffect" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="pdm_LiborMember" name="LiborMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_LineOfCreditAndNotesPayableAbstract" name="LineOfCreditAndNotesPayableAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="pdm_LineOfCreditFacilityExtensionFeePercentage" name="LineOfCreditFacilityExtensionFeePercentage" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="pdm_LineOfCreditFacilityExtensionPeriod" name="LineOfCreditFacilityExtensionPeriod" nillable="true" substitutionGroup="xbrli:item" type="us-types:durationStringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_LongTermAndShortTermDebtTypeAxis" name="LongTermAndShortTermDebtTypeAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_LongTermAndShortTermDebtTypeDomain" name="LongTermAndShortTermDebtTypeDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_MainStreet1901Member" name="MainStreet1901Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_MarketStreet1901Member" name="MarketStreet1901Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_MarylandWay5301Member" name="MarylandWay5301Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_MassachusettsAvenue1414Member" name="MassachusettsAvenue1414Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_MediciAtlantaLlcMember" name="MediciAtlantaLlcMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_MediciMember" name="MediciMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_MezzanineILoanAParticipation500WMonroeBuildingMember" name="MezzanineILoanAParticipation500WMonroeBuildingMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_MortgageLoan500WMonroeBuildingMember" name="MortgageLoan500WMonroeBuildingMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_MortgageNote35WestWackerBuildingMember" name="MortgageNote35WestWackerBuildingMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="pdm_NetAssetsAssumedUponConsolidationOfVariableInterestEntityNetOfNotesReceivablePreviouslyRecorded" name="NetAssetsAssumedUponConsolidationOfVariableInterestEntityNetOfNotesReceivablePreviouslyRecorded" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:periodType="duration" />
  <xsd:element id="pdm_NoncontrollingInterestPolicyTextBlock" name="NoncontrollingInterestPolicyTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_NorthBrandBoulevard800Member" name="NorthBrandBoulevard800Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_NorthFairfaxDrive4250Member" name="NorthFairfaxDrive4250Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_NotesReceivableAbstract" name="NotesReceivableAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_NotesReceivableAndVariableInterestEntityTable" name="NotesReceivableAndVariableInterestEntityTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_NotesReceivableLineItems" name="NotesReceivableLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="pdm_NumberOfBuildingsInRealEstateProperties" name="NumberOfBuildingsInRealEstateProperties" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="pdm_NumberOfClassesOfCommonStock" name="NumberOfClassesOfCommonStock" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="pdm_NumberOfInvestments" name="NumberOfInvestments" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="pdm_NumberOfLawsuitsAsDefendant" name="NumberOfLawsuitsAsDefendant" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="pdm_NumberOfMetropolitanAreasInWhichEntityOperates" name="NumberOfMetropolitanAreasInWhichEntityOperates" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="pdm_NumberOfNotesReceivable" name="NumberOfNotesReceivable" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element id="pdm_NumberOfNotesReceivableMatured" name="NumberOfNotesReceivableMatured" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element id="pdm_NumberOfUnconsolidatedJointVenturePartnerships" name="NumberOfUnconsolidatedJointVenturePartnerships" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="pdm_NumberOfWhollyOwnedManagementSubsidiaries" name="NumberOfWhollyOwnedManagementSubsidiaries" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_Nw64ThStreet2001Member" name="Nw64ThStreet2001Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_OfficePropertiesMember" name="OfficePropertiesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_OneBrattleSquareMember" name="OneBrattleSquareMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_OneIndependenceSquareMember" name="OneIndependenceSquareMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_OneMeridianCrossingsMember" name="OneMeridianCrossingsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_OperatingCashFlowOnForeclosedPropertyMember" name="OperatingCashFlowOnForeclosedPropertyMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="pdm_OptionToRequestEstablishmentOfNewTermLoanCommitmentsAggregateAmount" name="OptionToRequestEstablishmentOfNewTermLoanCommitmentsAggregateAmount" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="pdm_OptionToRequestEstablishmentOfNewTermLoanCommitmentsMinimumPerOccurrence" name="OptionToRequestEstablishmentOfNewTermLoanCommitmentsMinimumPerOccurrence" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="pdm_OptionToRequestEstablishmentOfNewTermLoanCommitmentsNumberOfCommitments" name="OptionToRequestEstablishmentOfNewTermLoanCommitmentsNumberOfCommitments" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="pdm_OptionToRequestEstablishmentOfNewTermLoanCommitmentsNumberOfRequests" name="OptionToRequestEstablishmentOfNewTermLoanCommitmentsNumberOfRequests" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="pdm_OrganizationAbstract" name="OrganizationAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="pdm_OriginalMaturityOfInvestmentsAccountedForAsCashEquivalents" name="OriginalMaturityOfInvestmentsAccountedForAsCashEquivalents" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="pdm_PaymentsForRedemptionsOfCommonStock" name="PaymentsForRedemptionsOfCommonStock" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="pdm_PaymentsOfDividendsCommonStockDistributionsToNoncontrollingInterestAndDiscountOnDividendReinvestment" name="PaymentsOfDividendsCommonStockDistributionsToNoncontrollingInterestAndDiscountOnDividendReinvestment" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="pdm_PercentOfOwnershipInterestInRealEstatePropertyDisposal" name="PercentOfOwnershipInterestInRealEstatePropertyDisposal" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="pdm_Piedmont500WMonroeFeeLlcMember" name="Piedmont500WMonroeFeeLlcMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_Piedmont500WestMonroeMezzILlcMember" name="Piedmont500WestMonroeMezzILlcMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_PiedmontOfficeHoldingsIncMember" name="PiedmontOfficeHoldingsIncMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_PiedmontPointeIMember" name="PiedmontPointeIMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_PiedmontPointeIiMember" name="PiedmontPointeIiMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_PiedmontPowerLlcMember" name="PiedmontPowerLlcMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="pdm_PrepaidExpensesAndOtherAssetsPolicyTextBlock" name="PrepaidExpensesAndOtherAssetsPolicyTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_PresidentialWay225Member" name="PresidentialWay225Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_PresidentialWay235Member" name="PresidentialWay235Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_PresidentialWayBuildings225And235Member" name="PresidentialWayBuildings225And235Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="pdm_PrimeRateInEffect" name="PrimeRateInEffect" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="pdm_RealEstateAccumulatedDepreciationAndAmortization" name="RealEstateAccumulatedDepreciationAndAmortization" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="pdm_RealEstateAccumulatedDepreciationWriteOffsOfFullyDepreciatedAndAmortizedAssets" name="RealEstateAccumulatedDepreciationWriteOffsOfFullyDepreciatedAndAmortizedAssets" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="pdm_RealEstateAccumulatedDepreciationWriteOffsOfIntangibleAssets" name="RealEstateAccumulatedDepreciationWriteOffsOfIntangibleAssets" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="pdm_RealEstateAndAccumulatedDepreciationInitialCost" name="RealEstateAndAccumulatedDepreciationInitialCost" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="pdm_RealEstateAndAccumulatedDepreciationOwnershipPercentage" name="RealEstateAndAccumulatedDepreciationOwnershipPercentage" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="pdm_RealEstateAssetsImpaired" name="RealEstateAssetsImpaired" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="pdm_RealEstateAssetsPolicyTextBlock" name="RealEstateAssetsPolicyTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="pdm_RealEstateInvestmentPropertyFairValue" name="RealEstateInvestmentPropertyFairValue" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="pdm_RealEstateInvestmentTrustStatusRequiredTaxableIncomeDistributionRate" name="RealEstateInvestmentTrustStatusRequiredTaxableIncomeDistributionRate" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_RealEstatePropertiesByTypeAxis" name="RealEstatePropertiesByTypeAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="pdm_RealEstatePropertiesLeasedPercent" name="RealEstatePropertiesLeasedPercent" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="pdm_RealEstatePropertiesTypeDomain" name="RealEstatePropertiesTypeDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="pdm_RealEstateWriteOffsOfFullyDepreciatedAndAmortizedAssets" name="RealEstateWriteOffsOfFullyDepreciatedAndAmortizedAssets" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="pdm_RealEstateWriteOffsOfIntangibleAssets" name="RealEstateWriteOffsOfIntangibleAssets" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_RedeemableCommonStockMember" name="RedeemableCommonStockMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="pdm_RedeemableCommonStockValue" name="RedeemableCommonStockValue" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_RheinMember" name="RheinMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_RiverCorporateCenterMember" name="RiverCorporateCenterMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_RogueMember" name="RogueMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="pdm_SalePriceOfRealEstateSold" name="SalePriceOfRealEstateSold" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_SarasotaCommerceCenterIiMember" name="SarasotaCommerceCenterIiMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="pdm_ScheduleOfCharacterizationOfDividendsToCommonStockholdersTableTextBlock" name="ScheduleOfCharacterizationOfDividendsToCommonStockholdersTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_ScheduleOfDebtInstrumentsTable" name="ScheduleOfDebtInstrumentsTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="pdm_ScheduleOfDisposalGroupsIncludingDiscontinuedOperationsResultsOfOperationsTableTextBlock" name="ScheduleOfDisposalGroupsIncludingDiscontinuedOperationsResultsOfOperationsTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="pdm_ScheduleOfFutureMinimumRentalPaymentsDueForOperatingLeasesTableTextBlock" name="ScheduleOfFutureMinimumRentalPaymentsDueForOperatingLeasesTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="pdm_ScheduleOfLettersOfCreditTableTextBlock" name="ScheduleOfLettersOfCreditTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="pdm_ScheduleOfOutstandingEmployeeDeferredStockAwardsTableTextBlock" name="ScheduleOfOutstandingEmployeeDeferredStockAwardsTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="pdm_ScheduleOfTaxBasisIncomeTableTextBlock" name="ScheduleOfTaxBasisIncomeTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="pdm_ScheduleOfTenantReceivablesTableTextBlock" name="ScheduleOfTenantReceivablesTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_SecuredPooledFacilityMember" name="SecuredPooledFacilityMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="pdm_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAmortizationOfNonvestedShares" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAmortizationOfNonvestedShares" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="pdm_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExpectedToVestInThreeYearsPercent" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExpectedToVestInThreeYearsPercent" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="pdm_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExpectedToVestInTwoYearsPercent" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExpectedToVestInTwoYearsPercent" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="pdm_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExpectedToVestWithinOneYearPercent" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExpectedToVestWithinOneYearPercent" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="pdm_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNetSharesGranted" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNetSharesGranted" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="pdm_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="pdm_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedPercentAtReportedDate" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedPercentAtReportedDate" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="pdm_SharesInTrustAuthorized" name="SharesInTrustAuthorized" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="instant" />
  <xsd:element id="pdm_SharesInTrustOutstanding" name="SharesInTrustOutstanding" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="pdm_SignificantAccountingPoliciesLineItems" name="SignificantAccountingPoliciesLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_SignificantAccountingPoliciesTable" name="SignificantAccountingPoliciesTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_SouthPriceRoad8700Member" name="SouthPriceRoad8700Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_SpectrumLoop350Member" name="SpectrumLoop350Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_StockAwards1GrantedMay242010Member" name="StockAwards1GrantedMay242010Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_StockAwards2GrantedApril52011Member" name="StockAwards2GrantedApril52011Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_StockAwards2GrantedMay242010Member" name="StockAwards2GrantedMay242010Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_StockAwardsGrantedApril52011Member" name="StockAwardsGrantedApril52011Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_StockAwardsGrantedMay112010Member" name="StockAwardsGrantedMay112010Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_StockAwardsGrantedMay62009Member" name="StockAwardsGrantedMay62009Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_StockAwardsMember" name="StockAwardsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="pdm_StockAwardsPerformancePeriodUsedInCalculation" name="StockAwardsPerformancePeriodUsedInCalculation" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_StockBasedCompensationAbstract" name="StockBasedCompensationAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="pdm_StockIssuedInNoncashActivitiesDiscountsApplied" name="StockIssuedInNoncashActivitiesDiscountsApplied" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_SunsetHillsRoad11107Member" name="SunsetHillsRoad11107Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_SunsetHillsRoad11109Member" name="SunsetHillsRoad11109Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_SuwaneeGatewayOneLlcMember" name="SuwaneeGatewayOneLlcMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_SuwaneeGatewayOneMember" name="SuwaneeGatewayOneMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_SylvanAvenue111BuildingMember" name="SylvanAvenue111BuildingMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="pdm_TaxBasisOfTotalAssets" name="TaxBasisOfTotalAssets" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="pdm_TenantReceivablesAbstract" name="TenantReceivablesAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="pdm_TenantReceivablesIncludingStraightLineRentalRevenueReceivables" name="TenantReceivablesIncludingStraightLineRentalRevenueReceivables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="pdm_TenantReceivablesNetPolicyTextBlock" name="TenantReceivablesNetPolicyTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="pdm_TenantReceivablesTextBlock" name="TenantReceivablesTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_Townpark400LlcMember" name="Townpark400LlcMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_Townpark400Member" name="Townpark400Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_TwoIndependenceSquareMember" name="TwoIndependenceSquareMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_TwoMeridianCrossingsMember" name="TwoMeridianCrossingsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_TwoParkCenterMember" name="TwoParkCenterMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_TwoPiercePlaceMember" name="TwoPiercePlaceMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_UnconsolidatedJointVentureMember" name="UnconsolidatedJointVentureMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_UndevelopedLandParcelsMember" name="UndevelopedLandParcelsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_Unsecured250MillionTermLoanMember" name="Unsecured250MillionTermLoanMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_Unsecured300MillionTermLoanMember" name="Unsecured300MillionTermLoanMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_Unsecured500MillionFacilityMember" name="Unsecured500MillionFacilityMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_UplandDrive8560Member" name="UplandDrive8560Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_UsBancorpCenterMember" name="UsBancorpCenterMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_VariableInterestEntitiesAbstract" name="VariableInterestEntitiesAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="pdm_VariableInterstEntityCashFlowPercentEntitledToEntity" name="VariableInterstEntityCashFlowPercentEntitledToEntity" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="pdm_VirginiaAve400Member" name="VirginiaAve400Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_WMonroe500Member" name="WMonroe500Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_WWackerBuilding35Member" name="WWackerBuilding35Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_WdcMortgageNotesMember" name="WdcMortgageNotesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_WellsFremontAssociatesMember" name="WellsFremontAssociatesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_WellsReitMultiStateOwnerLlcMember" name="WellsReitMultiStateOwnerLlcMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_WestEndAvenue2120Member" name="WestEndAvenue2120Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_WestEntranceDrive1075Member" name="WestEntranceDrive1075Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_WestJefferson150Member" name="WestJefferson150Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_WestLongLakeRoad1441Member" name="WestLongLakeRoad1441Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_WillametteMember" name="WillametteMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_WindyPointIMember" name="WindyPointIMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_WindyPointIiMember" name="WindyPointIiMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
</xsd:schema>