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  <xs:element id="bdn_MAPVentureMember" abstract="true" name="MAPVentureMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="bdn_DebtInstrumentExtensionTerm" abstract="false" name="DebtInstrumentExtensionTerm" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="bdn_LeaseCommissionIncomeMember" abstract="true" name="LeaseCommissionIncomeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="bdn_StockIssuedDuringPeriodValueRedemptionOfLimitedPartnersUnits" abstract="false" name="StockIssuedDuringPeriodValueRedemptionOfLimitedPartnersUnits" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bdn_LandParcelOneMember" abstract="true" name="LandParcelOneMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="bdn_NetGainLossOnSaleOfUndepreciatedRealEstate" abstract="false" name="NetGainLossOnSaleOfUndepreciatedRealEstate" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bdn_ShareIssuanceFromToDeferredCompensationPlanShares" abstract="false" name="ShareIssuanceFromToDeferredCompensationPlanShares" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="bdn_FiniteLivedIntangibleAssetsNetContinuingOperations" abstract="false" name="FiniteLivedIntangibleAssetsNetContinuingOperations" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bdn_UnconsolidatedRealEstateVenturesMember" abstract="true" name="UnconsolidatedRealEstateVenturesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="bdn_RentsMember" abstract="true" name="RentsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="bdn_DailySOFRAdjustmentMember" abstract="true" name="DailySOFRAdjustmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="bdn_MinorityInterestInOperatingPartnershipsSettlementValue" abstract="false" name="MinorityInterestInOperatingPartnershipsSettlementValue" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bdn_TermLoanMember" abstract="true" name="TermLoanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="bdn_NetIncomeLossAvailableToCommonUnitholdersBasic" abstract="false" name="NetIncomeLossAvailableToCommonUnitholdersBasic" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bdn_ShareIssuanceFromToDeferredCompensationPlan" abstract="false" name="ShareIssuanceFromToDeferredCompensationPlan" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bdn_IntangibleAssetsAndLiabilitiesDisclosureTextBlock" abstract="false" name="IntangibleAssetsAndLiabilitiesDisclosureTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="bdn_LondonInterbankOfferedRateMember" abstract="true" name="LondonInterbankOfferedRateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="bdn_OtherNoncashInvestingAndFinancingActivitiesIncreaseDecreaseInOtherAssetsResultOfInvestingActivities" abstract="false" name="OtherNoncashInvestingAndFinancingActivitiesIncreaseDecreaseInOtherAssetsResultOfInvestingActivities" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bdn_EarningsPerCommonPartnershipUnitTable" abstract="true" name="EarningsPerCommonPartnershipUnitTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="bdn_ConsolidatedDebtObligationsAbstract" abstract="true" name="ConsolidatedDebtObligationsAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="bdn_LandUnderActiveDevelopmentMember" abstract="true" name="LandUnderActiveDevelopmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="bdn_A3151MarketStreetMember" abstract="true" name="A3151MarketStreetMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="bdn_Note2028Member" abstract="true" name="Note2028Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="bdn_Note2024Member" abstract="true" name="Note2024Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="bdn_ScheduleOfFiniteLivedIntangibleAssetsAndLiabilitiesTableTableTextBlock" abstract="false" name="ScheduleOfFiniteLivedIntangibleAssetsAndLiabilitiesTableTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="bdn_FiniteLivedIntangibleAssetsAndLiabilitiesAmortizationExpenseTableTableTextBlock" abstract="false" name="FiniteLivedIntangibleAssetsAndLiabilitiesAmortizationExpenseTableTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="bdn_BelowMarketLeaseNetOperatingActivities" abstract="false" name="BelowMarketLeaseNetOperatingActivities" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bdn_RepurchaseProgramNumberOfMirrorUnitOfOperatingPartnershipRetiredForEachCommonShareRepurchased" abstract="false" name="RepurchaseProgramNumberOfMirrorUnitOfOperatingPartnershipRetiredForEachCommonShareRepurchased" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="bdn_PaymentsToRedevelopRealEstate" abstract="false" name="PaymentsToRedevelopRealEstate" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bdn_RedevelopmentProjectsMember" abstract="true" name="RedevelopmentProjectsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="bdn_LeasholdInterestLandMember" abstract="true" name="LeasholdInterestLandMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="bdn_CommonStockHeldInTrustMember" abstract="true" name="CommonStockHeldInTrustMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="bdn_Note2027Member" abstract="true" name="Note2027Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="bdn_EstimatedPotentialAdditionalContributionObligation" abstract="false" name="EstimatedPotentialAdditionalContributionObligation" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bdn_AdvancesToTenantForPurchaseOfTenantAssetsNetOfRepayments" abstract="false" name="AdvancesToTenantForPurchaseOfTenantAssetsNetOfRepayments" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bdn_RepurchaseOfRedeemableUnits" abstract="false" name="RepurchaseOfRedeemableUnits" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bdn_IndentureIAPreferredTrustIMember" abstract="true" name="IndentureIAPreferredTrustIMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="bdn_LongTermDebtMaturityAfterYearFour" abstract="false" name="LongTermDebtMaturityAfterYearFour" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bdn_GainLossOnSaleOfPropertiesAbstract" abstract="true" name="GainLossOnSaleOfPropertiesAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="bdn_NumberOfUnconsolidatedInvestmentsInRealEstateVentures" abstract="false" name="NumberOfUnconsolidatedInvestmentsInRealEstateVentures" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="bdn_PaymentOfOrdinaryDividendsCommonStockAndPreferredStock" abstract="false" name="PaymentOfOrdinaryDividendsCommonStockAndPreferredStock" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bdn_FiniteLivedIntangibleAssetExpectedAmortizationAfterYearFour" abstract="false" name="FiniteLivedIntangibleAssetExpectedAmortizationAfterYearFour" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bdn_DebtInstrumentExtensionPeriod" abstract="false" name="DebtInstrumentExtensionPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="bdn_CommonOwnershipInterestSecuritiesMember" abstract="true" name="CommonOwnershipInterestSecuritiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bdn_ReconciliationOfCashCashEquivalentsAndRestrictedCashAbstract" abstract="true" name="ReconciliationOfCashCashEquivalentsAndRestrictedCashAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="bdn_MidAtlanticOfficeJointVentureMember" abstract="true" name="MidAtlanticOfficeJointVentureMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="bdn_OperatingLeaseCostsCapitalized" abstract="false" name="OperatingLeaseCostsCapitalized" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bdn_NetIncomeLossAvailableToCommonUnitHoldersDiluted" abstract="false" name="NetIncomeLossAvailableToCommonUnitHoldersDiluted" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bdn_Note2023Member" abstract="true" name="Note2023Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="bdn_PennsylvaniaSuburbsMember" abstract="true" name="PennsylvaniaSuburbsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="bdn_MixedUseTowerMember" abstract="true" name="MixedUseTowerMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="bdn_SecuredTermLoanDue2028Member" abstract="true" name="SecuredTermLoanDue2028Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="bdn_IndentureIIPreferredTrustIiMember" abstract="true" name="IndentureIIPreferredTrustIiMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="bdn_RealEstateVentureMember" abstract="true" name="RealEstateVentureMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="bdn_LimitedPaymentGuaranteePercentOfPrincipleBalance" abstract="false" name="LimitedPaymentGuaranteePercentOfPrincipleBalance" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="bdn_DrexelSquareMember" abstract="true" name="DrexelSquareMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="bdn_CapitalCommitmentTargetsConstructionLoanAmount" abstract="false" name="CapitalCommitmentTargetsConstructionLoanAmount" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bdn_DevelopmentProjectsMember" abstract="true" name="DevelopmentProjectsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="bdn_A2868InterestRateSwapMaturingOctober82022Member" abstract="true" name="A2868InterestRateSwapMaturingOctober82022Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="bdn_A600MillionUnsecuredCreditFacilityMember" abstract="true" name="A600MillionUnsecuredCreditFacilityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="bdn_RealEstateExcludingConstructionInProgressMember" abstract="true" name="RealEstateExcludingConstructionInProgressMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bdn_InvestmentsSecondaryCategorizationAxis" abstract="true" name="InvestmentsSecondaryCategorizationAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="bdn_NoncashOrPartNoncashDispositionOfInvestingRealEstate" abstract="false" name="NoncashOrPartNoncashDispositionOfInvestingRealEstate" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bdn_ChangeInCapitalExpendituresFinancedThroughRetentionPayableAtPeriodEnd" abstract="false" name="ChangeInCapitalExpendituresFinancedThroughRetentionPayableAtPeriodEnd" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bdn_BelowMarketLeaseAmortizationIncomeAfterYearFour" abstract="false" name="BelowMarketLeaseAmortizationIncomeAfterYearFour" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bdn_EquityMethodInvestmentAdditionalSummarizedFinancialInformationDebt" abstract="false" name="EquityMethodInvestmentAdditionalSummarizedFinancialInformationDebt" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bdn_NumberOfParcelsOfLand" abstract="false" name="NumberOfParcelsOfLand" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="bdn_EquityMethodInvestmentsInAssetPosition" abstract="false" name="EquityMethodInvestmentsInAssetPosition" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bdn_CommonSharesInGrantorTrustIssuedAndOutstanding" abstract="false" name="CommonSharesInGrantorTrustIssuedAndOutstanding" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="bdn_PhiladelphiaCBDMember" abstract="true" name="PhiladelphiaCBDMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="bdn_PaymentsOnAccountOfEmployeeTaxWithholdingsOnShareBasedAwards" abstract="false" name="PaymentsOnAccountOfEmployeeTaxWithholdingsOnShareBasedAwards" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bdn_CarryGuaranteeMember" abstract="true" name="CarryGuaranteeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="bdn_DeferredCompensationPayableInCommonStock" abstract="false" name="DeferredCompensationPayableInCommonStock" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bdn_ManagementFeesMember" abstract="true" name="ManagementFeesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="bdn_NetGainLossOnRealEstateVentureTransactionsIncludingRealEstateVentureFormation" abstract="false" name="NetGainLossOnRealEstateVentureTransactionsIncludingRealEstateVentureFormation" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bdn_BeneficiariesEquityTextBlock" abstract="false" name="BeneficiariesEquityTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="bdn_AreaOfAdditionalUndevelopedParcelsOfLandWithOptionToPurchase" abstract="false" name="AreaOfAdditionalUndevelopedParcelsOfLandWithOptionToPurchase" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:areaItemType"/>
  <xs:element id="bdn_NumberOfOfficePropertiesOwned" abstract="false" name="NumberOfOfficePropertiesOwned" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="bdn_OrganizationOfParentCompanyAndOperatingPartnershipTable" abstract="true" name="OrganizationOfParentCompanyAndOperatingPartnershipTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="bdn_SecuredFacilityMember" abstract="true" name="SecuredFacilityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="bdn_OneUptownVentureMember" abstract="true" name="OneUptownVentureMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="bdn_PartnersCapitalAccountRepurchasedAndRetired" abstract="false" name="PartnersCapitalAccountRepurchasedAndRetired" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bdn_ThirdPartyManagementRevenueMember" abstract="true" name="ThirdPartyManagementRevenueMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="bdn_NetIncomeLossAttributableToNoncontrollingInterestDiluted" abstract="false" name="NetIncomeLossAttributableToNoncontrollingInterestDiluted" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bdn_ManagementCompanySubsidiariesMember" abstract="true" name="ManagementCompanySubsidiariesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="bdn_ScheduleOfCorePortfolioOfOperatingPropertiesAndExcludesDevelopmentAndRedevelopmentPropertiesUnderConstructionTableTableTextBlock" abstract="false" name="ScheduleOfCorePortfolioOfOperatingPropertiesAndExcludesDevelopmentAndRedevelopmentPropertiesUnderConstructionTableTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="bdn_LandHeldForDevelopmentMember" abstract="true" name="LandHeldForDevelopmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="bdn_StraightLineGroundRentExpense" abstract="false" name="StraightLineGroundRentExpense" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bdn_LeaseAgreementTerm" abstract="false" name="LeaseAgreementTerm" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="bdn_MixedUsePropertiesMember" abstract="true" name="MixedUsePropertiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
</xs:schema>
