

<!--XBRL Document Created with WebFilings-->
<!-- -->
<xsd:schema attributeFormDefault="unqualified" elementFormDefault="qualified" targetNamespace="http://www.piedmontreit.com/20131231" 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/20131231" 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/2013-01-31" schemaLocation="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd" />
  <xsd:import namespace="http://fasb.org/us-roles/2013-01-31" schemaLocation="http://xbrl.fasb.org/us-gaap/2013/elts/us-roles-2013-01-31.xsd" />
  <xsd:import namespace="http://fasb.org/us-types/2013-01-31" schemaLocation="http://xbrl.fasb.org/us-gaap/2013/elts/us-types-2013-01-31.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/2013-01-31" schemaLocation="http://xbrl.sec.gov/country/2013/country-2013-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/currency/2012-01-31" schemaLocation="http://xbrl.sec.gov/currency/2012/currency-2012-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/dei/2013-01-31" schemaLocation="http://xbrl.sec.gov/dei/2013/dei-2013-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/exch/2013-01-31" schemaLocation="http://xbrl.sec.gov/exch/2013/exch-2013-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/invest/2013-01-31" schemaLocation="http://xbrl.sec.gov/invest/2013/invest-2013-01-31.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-20131231_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-20131231_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-20131231_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-20131231_pre.xml" xlink:role="http://www.xbrl.org/2003/role/presentationLinkbaseRef" xlink:type="simple" />
      <link:roleType id="Acquisitions" roleURI="http://www.piedmontreit.com/role/Acquisitions">
        <link:definition>2103100 - Disclosure - Acquisitions</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="AcquisitionsDetails" roleURI="http://www.piedmontreit.com/role/AcquisitionsDetails">
        <link:definition>2403401 - Disclosure - Acquisitions (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="CommitmentsAndContingencies" roleURI="http://www.piedmontreit.com/role/CommitmentsAndContingencies">
        <link:definition>2110100 - 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>2410402 - 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>2310301 - 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>1001001 - 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>1005000 - 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="ConsolidatedStatementsOfComprehensiveIncome" roleURI="http://www.piedmontreit.com/role/ConsolidatedStatementsOfComprehensiveIncome">
        <link:definition>1003000 - Statement - Consolidated Statements of Comprehensive 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="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>1004000 - 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>1004001 - 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="Debt" roleURI="http://www.piedmontreit.com/role/Debt">
        <link:definition>2105100 - Disclosure - Debt</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="DebtDetails" roleURI="http://www.piedmontreit.com/role/DebtDetails">
        <link:definition>2405402 - Disclosure - Debt (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="DebtMaturitiesOfLongTermDebtDetails" roleURI="http://www.piedmontreit.com/role/DebtMaturitiesOfLongTermDebtDetails">
        <link:definition>2405403 - Disclosure - Debt (Maturities of Long-term Debt) (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="DebtTables" roleURI="http://www.piedmontreit.com/role/DebtTables">
        <link:definition>2305301 - Disclosure - Debt (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="DerivativeInstruments" roleURI="http://www.piedmontreit.com/role/DerivativeInstruments">
        <link:definition>2107100 - 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>2407402 - 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>2307301 - 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>2114100 - 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>2414402 - 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>2314301 - 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="DocumentAndEntityInformationDocument" roleURI="http://www.piedmontreit.com/role/DocumentAndEntityInformationDocument">
        <link:definition>0001000 - Document - Document and Entity Information Document</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>2112100 - 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>2412402 - 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>2312301 - 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>2108100 - 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>2408402 - 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>2308301 - 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="GuarantorAndNonGuarantorFinancialInformationCondensedConsolidatedBalanceSheetsDetails" roleURI="http://www.piedmontreit.com/role/GuarantorAndNonGuarantorFinancialInformationCondensedConsolidatedBalanceSheetsDetails">
        <link:definition>2418402 - Disclosure - Guarantor and Non-Guarantor Financial Information- Condensed Consolidated Balance Sheets (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="GuarantorFinancials" roleURI="http://www.piedmontreit.com/role/GuarantorFinancials">
        <link:definition>2118100 - Disclosure - Guarantor Financials</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="GuarantorFinancialsGuarantorAndNonGuarantorFinancialInformationCondensedConsolidatedStatementsOfCashFlowsDetails" roleURI="http://www.piedmontreit.com/role/GuarantorFinancialsGuarantorAndNonGuarantorFinancialInformationCondensedConsolidatedStatementsOfCashFlowsDetails">
        <link:definition>2418404 - Disclosure - Guarantor Financials Guarantor and Non-Guarantor Financial Information - Condensed Consolidated Statements of Cash Flows (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="GuarantorFinancialsGuarantorAndNonGuarantorFinancialInformationCondensedConsolidatedStatementsOfIncomeDetails" roleURI="http://www.piedmontreit.com/role/GuarantorFinancialsGuarantorAndNonGuarantorFinancialInformationCondensedConsolidatedStatementsOfIncomeDetails">
        <link:definition>2418403 - Disclosure - Guarantor Financials Guarantor and Non-Guarantor Financial Information - Condensed Consolidated Statements of Income (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="GuarantorFinancialsTables" roleURI="http://www.piedmontreit.com/role/GuarantorFinancialsTables">
        <link:definition>2318301 - Disclosure - Guarantor Financials (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>2109100 - 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>2409402 - 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>2309301 - 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>2116100 - 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>2416402 - 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>2316301 - 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="OperatingLeases" roleURI="http://www.piedmontreit.com/role/OperatingLeases">
        <link:definition>2113100 - 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>2413402 - 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>2313301 - 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>2401401 - 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="QuarterlyResultsUnaudited" roleURI="http://www.piedmontreit.com/role/QuarterlyResultsUnaudited">
        <link:definition>2117100 - 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>2417402 - 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>2317301 - 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="ScheduleIiiRealEstateAssetsAndAccumulatedDepreciation" roleURI="http://www.piedmontreit.com/role/ScheduleIiiRealEstateAssetsAndAccumulatedDepreciation">
        <link:definition>2120100 - 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>2420401 - 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>2111100 - 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>2411402 - 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>2411403 - 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>2311301 - 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>2119100 - 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>2419401 - 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>2115100 - 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>2415402 - 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>2315301 - 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="UnconsolidatedJointVentures" roleURI="http://www.piedmontreit.com/role/UnconsolidatedJointVentures">
        <link:definition>2104100 - 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>2404402 - 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>2304301 - 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>2106100 - 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>2406402 - 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>2306301 - 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_A300Million2011UnsecuredTermLoanMaturing2016Member" name="A300Million2011UnsecuredTermLoanMaturing2016Member" 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_AdjustmentForAmortizationContinuingOperations" name="AdjustmentForAmortizationContinuingOperations" 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 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_AonCenterChicagoMortgageNoteMember" name="AonCenterChicagoMortgageNoteMember" 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 abstract="true" id="pdm_ArlingtonGatewayMember" name="ArlingtonGatewayMember" 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_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_CapitalExpendituresByTypeAxis" name="CapitalExpendituresByTypeAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_CapitalExpendituresByTypeDomain" name="CapitalExpendituresByTypeDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="pdm_CapitalizedDeferredCostsInternalLeasing" name="CapitalizedDeferredCostsInternalLeasing" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" 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_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:balance="credit" 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 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_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_DebtInstrumentFixedChargeCoverageRatio" name="DebtInstrumentFixedChargeCoverageRatio" nillable="true" substitutionGroup="xbrli:item" type="xbrli:pureItemType" xbrli:periodType="instant" />
  <xsd:element id="pdm_DebtInstrumentInterestRateStatedBasisSpreadonVariableRate" name="DebtInstrumentInterestRateStatedBasisSpreadonVariableRate" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="pdm_DebtInstrumentLeverageRatio" name="DebtInstrumentLeverageRatio" nillable="true" substitutionGroup="xbrli:item" type="xbrli:pureItemType" xbrli:periodType="instant" />
  <xsd:element id="pdm_DebtInstrumentNumberofDebtFacilities" name="DebtInstrumentNumberofDebtFacilities" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element id="pdm_DebtInstrumentSecuredDebtRatio" name="DebtInstrumentSecuredDebtRatio" nillable="true" substitutionGroup="xbrli:item" type="xbrli:pureItemType" xbrli:periodType="instant" />
  <xsd:element id="pdm_DebtInstrumentTermofDebtAgreement" name="DebtInstrumentTermofDebtAgreement" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="pdm_DebtInstrumentUnencumberedInterestCoverageRatio" name="DebtInstrumentUnencumberedInterestCoverageRatio" nillable="true" substitutionGroup="xbrli:item" type="xbrli:pureItemType" xbrli:periodType="instant" />
  <xsd:element id="pdm_DebtInstrumentUnencumberedLeverageRatio" name="DebtInstrumentUnencumberedLeverageRatio" nillable="true" substitutionGroup="xbrli:item" type="xbrli:pureItemType" xbrli:periodType="instant" />
  <xsd:element id="pdm_DeferredGainLossonSettlementofInterestRateDerivative" name="DeferredGainLossonSettlementofInterestRateDerivative" 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_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_DisposalGroupIncludingDiscontinuedOperationInterestAndOtherIncomeExpense" name="DisposalGroupIncludingDiscontinuedOperationInterestAndOtherIncomeExpense" 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_DisposalGroupIncludingDiscontinuedOperationNetLossGainFromCasualtyEvent" name="DisposalGroupIncludingDiscontinuedOperationNetLossGainFromCasualtyEvent" 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_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_DivestitureofBusinessContractualGrossSalesPrice" name="DivestitureofBusinessContractualGrossSalesPrice" 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_Durham111AvenueMember" name="Durham111AvenueMember" 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 id="pdm_EffectiveIncomeTaxRateReconciliationDeductionsRentalIncomeAccrued" name="EffectiveIncomeTaxRateReconciliationDeductionsRentalIncomeAccrued" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_Enclave1200ParkwayMember" name="Enclave1200ParkwayMember" 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 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_FiniteLivedIntangibleLiabilitiesWeightedAverageUsefulLife" name="FiniteLivedIntangibleLiabilitiesWeightedAverageUsefulLife" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_FiveThreeZeroOneMarylandWayMember" name="FiveThreeZeroOneMarylandWayMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" 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_ForwardStartingInterestRateSwap3Member" name="ForwardStartingInterestRateSwap3Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_ForwardStartingInterestRateSwap4Member" name="ForwardStartingInterestRateSwap4Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_ForwardStartingInterestRateSwap5Member" name="ForwardStartingInterestRateSwap5Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_ForwardStartingInterestRateSwap6Member" name="ForwardStartingInterestRateSwap6Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_ForwardStartingInterestRateSwapMember" name="ForwardStartingInterestRateSwapMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_FourSixEightFiveInvestmentDriveMember" name="FourSixEightFiveInvestmentDriveMember" 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_GainLossOnConsolidation" name="GainLossOnConsolidation" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" 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_GuarantorMember" name="GuarantorMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_GuarantorandNonGuarantorFinancialInformationAbstract" name="GuarantorandNonGuarantorFinancialInformationAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" 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_HiddenLakeCircleBuildingsMember" name="HiddenLakeCircleBuildingsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" 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_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:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="pdm_IncreaseDecreaseInDeferredOfferingCosts" name="IncreaseDecreaseInDeferredOfferingCosts" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="pdm_IncreaseDecreaseinAccruedShareRepurchases" name="IncreaseDecreaseinAccruedShareRepurchases" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_IncrementalCapitalExpendituresMember" name="IncrementalCapitalExpendituresMember" 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="debit" xbrli:periodType="instant" />
  <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 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_InvestmentInSubsidiary" name="InvestmentInSubsidiary" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <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_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_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_LetterOfCreditOneJuly2013Member" name="LetterOfCreditOneJuly2013Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="pdm_LetterOfCreditRenewalPeriod" name="LetterOfCreditRenewalPeriod" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_LetterOfCreditThreeJuly2013Member" name="LetterOfCreditThreeJuly2013Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_LetterOfCreditTwoJuly2013Member" name="LetterOfCreditTwoJuly2013Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="pdm_LiabilitiesAssumedUponConsolidationOfVariableInterestEntity" name="LiabilitiesAssumedUponConsolidationOfVariableInterestEntity" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="pdm_LiborInterestRateInEffect" name="LiborInterestRateInEffect" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="pdm_LineOfCreditFacilityMaturityExtensionPeriod" name="LineOfCreditFacilityMaturityExtensionPeriod" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="pdm_LineOfCreditFacilityMaturityPeriod" name="LineOfCreditFacilityMaturityPeriod" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="pdm_LineOfCreditFacilityMaximumMaturityExtensionPeriod" name="LineOfCreditFacilityMaximumMaturityExtensionPeriod" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="pdm_LineOfCreditFacilityNumberofMaturityExtensionPeriods" name="LineOfCreditFacilityNumberofMaturityExtensionPeriods" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" 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 id="pdm_NetAssetsAssumedUponConsolidationOfVariableInterestEntityNetOfNotesReceivablePreviouslyRecorded" name="NetAssetsAssumedUponConsolidationOfVariableInterestEntityNetOfNotesReceivablePreviouslyRecorded" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="pdm_NetCasualtyLossesGainsPolicyTextBlock" name="NetCasualtyLossesGainsPolicyTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="pdm_NetLossGainFromCasualtyEvent" name="NetLossGainFromCasualtyEvent" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" 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_NonincrementalCapitalExpendituresMember" name="NonincrementalCapitalExpendituresMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" 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 id="pdm_NotesReceivableIntercompanyTransactions" name="NotesReceivableIntercompanyTransactions" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" 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_NumberOfPropertiesInCollateralizedPool" name="NumberOfPropertiesInCollateralizedPool" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="pdm_NumberOfRealEstatePropertiesSold" name="NumberOfRealEstatePropertiesSold" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <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 id="pdm_NumberofInterestRateDerivativesEnteredDuringPeriod" name="NumberofInterestRateDerivativesEnteredDuringPeriod" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element id="pdm_NumberofInterestRateDerivativesSettledDuringthePeriod" name="NumberofInterestRateDerivativesSettledDuringthePeriod" 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_OneLincolnParkMember" name="OneLincolnParkMember" 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_OneSixOneCorporateCenterMember" name="OneSixOneCorporateCenterMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="pdm_OperatingLeasesIncomeStatementPercentageofAnnualizedLeaseRevenue" name="OperatingLeasesIncomeStatementPercentageofAnnualizedLeaseRevenue" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" 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_PaymentsForProceedsFromIntercompanyDistributions" name="PaymentsForProceedsFromIntercompanyDistributions" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="pdm_PaymentsForProceedsFromIntercompanyNotesReceivableInvestingActivities" name="PaymentsForProceedsFromIntercompanyNotesReceivableInvestingActivities" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="pdm_PaymentsForTenantImprovementsandCapitalImprovements" name="PaymentsForTenantImprovementsandCapitalImprovements" 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_PaymentsforProceedsfromIntercompanyNotesPayable" name="PaymentsforProceedsfromIntercompanyNotesPayable" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="pdm_PaymentstoAcquireInterestinUnconsolidatedJointVentureNetofCashAssumed" name="PaymentstoAcquireInterestinUnconsolidatedJointVentureNetofCashAssumed" 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 id="pdm_PercentageOfLeasedRealEstateProperties" name="PercentageOfLeasedRealEstateProperties" 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_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 abstract="true" id="pdm_PiedmontsInvestmentinFund13andREITJointVentureMember" name="PiedmontsInvestmentinFund13andREITJointVentureMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_PortlandPortfolioMember" name="PortlandPortfolioMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="pdm_PrepaidExpenseAndRestrictedCashAndCashEquivalentsAndOtherAssets" name="PrepaidExpenseAndRestrictedCashAndCashEquivalentsAndOtherAssets" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <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 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_RealEstateInvestmentTrustStatusRequiredTaxableIncomeDistributionRate" name="RealEstateInvestmentTrustStatusRequiredTaxableIncomeDistributionRate" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="pdm_RealEstatePropertiesLeasedPercent" name="RealEstatePropertiesLeasedPercent" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="pdm_RealEstateWriteDownOfDepreciatedAndAmortizedAssets" name="RealEstateWriteDownOfDepreciatedAndAmortizedAssets" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="pdm_RealEstateWriteDownOfIntangibleAssets" name="RealEstateWriteDownOfIntangibleAssets" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="pdm_ReductionOfLongLivedAssetsDueToCasualtyEvent" name="ReductionOfLongLivedAssetsDueToCasualtyEvent" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="pdm_RestrictedCashAndEscrowsFairValueDisclosure" name="RestrictedCashAndEscrowsFairValueDisclosure" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <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_RoyalLaneMember" name="RoyalLaneMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" 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 abstract="true" id="pdm_SecuredPooledFacilityMember" name="SecuredPooledFacilityMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_Senior350MillionNotesMember" name="Senior350MillionNotesMember" 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 id="pdm_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedPercentAtReportedDate" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedPercentAtReportedDate" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="pdm_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsSharebasedLiabilitiesPaidDuringPeriod" name="SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsSharebasedLiabilitiesPaidDuringPeriod" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <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_SixFiveSixFiveMacArthurBlvdMember" name="SixFiveSixFiveMacArthurBlvdMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" 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_StockAwards1GrantedApril42012Member" name="StockAwards1GrantedApril42012Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_StockAwards2GrantedApril22013Member" name="StockAwards2GrantedApril22013Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_StockAwards2GrantedApril42012Member" name="StockAwards2GrantedApril42012Member" 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_StockAwardsGrantedApril22013Member" name="StockAwardsGrantedApril22013Member" 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_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 abstract="true" id="pdm_SunsetHillsRoad11107Member" name="SunsetHillsRoad11107Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_SunsetHillsRoad11107and11109Member" name="SunsetHillsRoad11107and11109Member" 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 id="pdm_TaxBasisOfTotalAssets" name="TaxBasisOfTotalAssets" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <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 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_TwentyTwentyMember" name="TwentyTwentyMember" 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 id="pdm_UnconsolidatedEquityMethodInvestmentsandDuefromJointVentures" name="UnconsolidatedEquityMethodInvestmentsandDuefromJointVentures" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <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_Unsecured300million2013TermLoanMaturing2019Member" name="Unsecured300million2013TermLoanMaturing2019Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_Unsecured500MillionLineOfCreditMember" name="Unsecured500MillionLineOfCreditMember" 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_VariableInterestEntitiesTextBlock" name="VariableInterestEntitiesTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="pdm_VariableInterestEntityCashFlowPercentEntitledToEntity" name="VariableInterestEntityCashFlowPercentEntitledToEntity" 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_WaysideRoad5And15Member" name="WaysideRoad5And15Member" 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_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_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>