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  <xsd:element id="pdm_DisposalGroupIncludingDiscontinuedOperationConsiderationperSquareFoot" name="DisposalGroupIncludingDiscontinuedOperationConsiderationperSquareFoot" nillable="true" substitutionGroup="xbrli:item" type="us-types:perUnitItemType" xbrli:periodType="instant" />
  <xsd:element id="pdm_DisposalGroupIncludingDiscontinuedOperationDeferredLeaseCostsAccumulatedAmortization" name="DisposalGroupIncludingDiscontinuedOperationDeferredLeaseCostsAccumulatedAmortization" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="pdm_DisposalGroupIncludingDiscontinuedOperationDeferredLeaseCostsNet" name="DisposalGroupIncludingDiscontinuedOperationDeferredLeaseCostsNet" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <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_DisposalGroupIncludingDiscontinuedOperationPropertyManagementFeeRevenue" name="DisposalGroupIncludingDiscontinuedOperationPropertyManagementFeeRevenue" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" 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_DisposalGroupIncludingDiscontinuedOperationStraightLineRent" name="DisposalGroupIncludingDiscontinuedOperationStraightLineRent" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="pdm_DisposalGroupIncludingDiscontinuedOperationTenantReimbursement" name="DisposalGroupIncludingDiscontinuedOperationTenantReimbursement" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="pdm_DisposalGroupIncludingDiscontinuedOtherIncomeExpense" name="DisposalGroupIncludingDiscontinuedOtherIncomeExpense" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="pdm_DividendReinvestmentPlanShareholdersDiscount" name="DividendReinvestmentPlanShareholdersDiscount" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="pdm_DividendsMinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHoldersAndStockIssuedDuringPeriodValueDividendReinvestmentPlan" name="DividendsMinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHoldersAndStockIssuedDuringPeriodValueDividendReinvestmentPlan" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_DocumentAndEntityInformationAbstract" name="DocumentAndEntityInformationAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_DupreeMember" name="DupreeMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_EASTPOINTIandIIMember" name="EASTPOINTIandIIMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_ENCLAVEPLACEMember" name="ENCLAVEPLACEMember" 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 id="pdm_EffectiveIncomeTaxRateReconciliationDeductionsRentalIncomeAccrued" name="EffectiveIncomeTaxRateReconciliationDeductionsRentalIncomeAccrued" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="pdm_EffectiveIncomeTaxRateReconciliationExcessTaxableIncomeLosstoDetermineIncomeTaxBasisinNetIncomeLoss" name="EffectiveIncomeTaxRateReconciliationExcessTaxableIncomeLosstoDetermineIncomeTaxBasisinNetIncomeLoss" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" 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_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_EyeStreet1201NWAssociatesLLCandEyeStreet1225NWAssociatesLLCMember" name="EyeStreet1201NWAssociatesLLCandEyeStreet1225NWAssociatesLLCMember" 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_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_FixedRate125MillionLoanMember" name="FixedRate125MillionLoanMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_FixedRate160MillionLoanMember" name="FixedRate160MillionLoanMember" 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_ForwardStartingInterestRateSwapMember" name="ForwardStartingInterestRateSwapMember" 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_GLENRIDGEHIGHLANDSONEMember" name="GLENRIDGEHIGHLANDSONEMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_Galleria200BuildingMember" name="Galleria200BuildingMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_Galleria300Member" name="Galleria300Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" 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_HurricaneSandyMember" name="HurricaneSandyMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_InServiceOfficePropertiesMember" name="InServiceOfficePropertiesMember" 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 abstract="true" id="pdm_IncomeTaxesLineItems" name="IncomeTaxesLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_IncomeTaxesTable" name="IncomeTaxesTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" 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_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_InterestRateSwap1through4Member" name="InterestRateSwap1through4Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_InterestRateSwap5through6Member" name="InterestRateSwap5through6Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_InterestRateSwap7through9Member" name="InterestRateSwap7through9Member" 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 id="pdm_LineOfCreditFacilityMaturityExtensionPeriod" name="LineOfCreditFacilityMaturityExtensionPeriod" 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_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_MediciMember" name="MediciMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_MortgageLoanMaturingSeptember12021Member" name="MortgageLoanMaturingSeptember12021Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="pdm_NetCasualtyLossesLitigationSettlementsLossesGainsPolicyTextBlock" name="NetCasualtyLossesLitigationSettlementsLossesGainsPolicyTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
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  <xsd:element id="pdm_NoncontrollingInterestReallocationofNoncontrollingInterestofSubsidiary" name="NoncontrollingInterestReallocationofNoncontrollingInterestofSubsidiary" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" 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_NumberOfLawsuitsAsDefendant" name="NumberOfLawsuitsAsDefendant" 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_NumberofInterestRateDerivativesSettled" name="NumberofInterestRateDerivativesSettled" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="pdm_NumberofRealEstatePropertiesUnderDevelopment" name="NumberofRealEstatePropertiesUnderDevelopment" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="pdm_NumberofTenantandBuildingImprovementCategories" name="NumberofTenantandBuildingImprovementCategories" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <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_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_OneWaysideRoadMember" name="OneWaysideRoadMember" 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 id="pdm_OwnershipPercentagebyParent" name="OwnershipPercentagebyParent" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="pdm_ParkPlaceonTurtleCreekMember" name="ParkPlaceonTurtleCreekMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" 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_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_PaymentsforTenantImprovementsCapitalImprovementsandtoDevelopRealEstateAssets" name="PaymentsforTenantImprovementsCapitalImprovementsandtoDevelopRealEstateAssets" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="pdm_PaymentsofDebtDiscountDuetoLoanModification" name="PaymentsofDebtDiscountDuetoLoanModification" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_PerformanceShareProgramAwardGrantedMay12015Member" name="PerformanceShareProgramAwardGrantedMay12015Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_PerformanceShareProgramAwardGrantedMay242016Member" name="PerformanceShareProgramAwardGrantedMay242016Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_PerformanceShareProgramAwardGrantedMay92014Member" name="PerformanceShareProgramAwardGrantedMay92014Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_PerimeterCenterWest1155Member" name="PerimeterCenterWest1155Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <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_PiedmontOfficeHoldingsIncMember" name="PiedmontOfficeHoldingsIncMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_PiedmontPointeIMember" name="PiedmontPointeIMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_PiedmontPointeIiMember" name="PiedmontPointeIiMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_PiedmontPowerLlcMember" name="PiedmontPowerLlcMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_PiedmontWashingtonPropertiesIncMember" name="PiedmontWashingtonPropertiesIncMember" 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_RealEstateHeldForSaleNet" name="RealEstateHeldForSaleNet" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="pdm_RealEstateInvestmentsNumberofOfficeMarkets" name="RealEstateInvestmentsNumberofOfficeMarkets" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="pdm_RealEstatePropertiesLeasedPercent" name="RealEstatePropertiesLeasedPercent" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="pdm_RealEstatePropertyNumberofStoriesofBuilding" name="RealEstatePropertyNumberofStoriesofBuilding" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="pdm_RealEstatePropertyPercentofPropertyUnderLease" name="RealEstatePropertyPercentofPropertyUnderLease" 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_RedemptionofNoncontrollingInterestinConsolidatedVariableInterestEntity" name="RedemptionofNoncontrollingInterestinConsolidatedVariableInterestEntity" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_RedevelopmentAssetMember" name="RedevelopmentAssetMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" 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 id="pdm_RetirementofSharesReturnedFromEscrowShares" name="RetirementofSharesReturnedFromEscrowShares" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration" />
  <xsd:element id="pdm_RetirementofSharesReturnedfromEscrow" name="RetirementofSharesReturnedfromEscrow" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="pdm_RetirementofSharesReturnedfromEscrowOperatingActivity" name="RetirementofSharesReturnedfromEscrowOperatingActivity" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_RiverCorporateCenterMember" name="RiverCorporateCenterMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_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_ScheduleOfTaxBasisIncomeTableTextBlock" name="ScheduleOfTaxBasisIncomeTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_SecuredPromissoryNoteMember" name="SecuredPromissoryNoteMember" 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_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsChangeinEstimatedPotentialFutureAwardsWeightedAverageGrantDateFairValue" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsChangeinEstimatedPotentialFutureAwardsWeightedAverageGrantDateFairValue" nillable="true" substitutionGroup="xbrli:item" type="num:perShareItemType" xbrli:periodType="duration" />
  <xsd:element id="pdm_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNetSharesGranted" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNetSharesGranted" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="instant" />
  <xsd:element id="pdm_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsIncreaseDecreaseinEstimatedPotentialFutureAwardsNetofForfeitures" name="SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsIncreaseDecreaseinEstimatedPotentialFutureAwardsNetofForfeitures" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_SharebasedCompensationAwardTrancheFiveMember" name="SharebasedCompensationAwardTrancheFiveMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_SharebasedCompensationAwardTrancheFourMember" name="SharebasedCompensationAwardTrancheFourMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" 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_SignificantAccountingPoliciesAbstract" name="SignificantAccountingPoliciesAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <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_StockAwardsMember" name="StockAwardsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_SunTrustCenterMember" name="SunTrustCenterMember" 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_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_The5WallStreetBuildingMember" name="The5WallStreetBuildingMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_TotalRevenuesDerivedfromLongTermLeasestoTenantsorReimbursementofPropertyTaxandInsuranceExpensesMember" name="TotalRevenuesDerivedfromLongTermLeasestoTenantsorReimbursementofPropertyTaxandInsuranceExpensesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_Townpark400Member" name="Townpark400Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_TwoIndependenceSquareMember" name="TwoIndependenceSquareMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_TwoMeridianCrossingsMember" name="TwoMeridianCrossingsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_TwoParkCenterMember" name="TwoParkCenterMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_TwoPiercePlaceMember" name="TwoPiercePlaceMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element 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_Unsecured170Million2015TermLoanMember" name="Unsecured170Million2015TermLoanMember" 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_Unsecured500Million2015LineofCreditMember" name="Unsecured500Million2015LineofCreditMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_UnsecuredSenior350MillionNotesMember" name="UnsecuredSenior350MillionNotesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pdm_UnsecuredSenior400MillionNotesMember" name="UnsecuredSenior400MillionNotesMember" 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 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_WESTMONROESTREET500Member" name="WESTMONROESTREET500Member" 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>