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  <xsd:element id="bdn_AvailableForSaleSecuritiesInterestRateRangeMinimum" name="AvailableForSaleSecuritiesInterestRateRangeMinimum" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="bdn_AverageSalesPricePerShare" name="AverageSalesPricePerShare" nillable="true" substitutionGroup="xbrli:item" type="num:perShareItemType" xbrli:periodType="duration" />
  <xsd:element id="bdn_BalancePortionOfAcquisitionRelatedLiability" name="BalancePortionOfAcquisitionRelatedLiability" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="bdn_BankTermLoanAndCreditFacilityMember" name="BankTermLoanAndCreditFacilityMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bdn_BankTermLoanMember" name="BankTermLoanMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bdn_BeneficiariesEquityOfParentCompanyTextualsAbstract" name="BeneficiariesEquityOfParentCompanyTextualsAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="bdn_BeneficiariesEquityTextBlock" name="BeneficiariesEquityTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="bdn_CapitalizedInternalDirectLeasingCosts" name="CapitalizedInternalDirectLeasingCosts" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="bdn_CashReceivedAsRevenue" name="CashReceivedAsRevenue" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="bdn_CashReceivedForHeldToMaturitySecuritiesSold" name="CashReceivedForHeldToMaturitySecuritiesSold" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="bdn_ChangeInCapitalExpendituresFinancedThroughRetentionPayableAtPeriodEnd" name="ChangeInCapitalExpendituresFinancedThroughRetentionPayableAtPeriodEnd" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="bdn_ChangeInUnfundedTenantAllowance" name="ChangeInUnfundedTenantAllowance" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bdn_CiraSouthGarageMember" name="CiraSouthGarageMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bdn_ClassF2010UnitsMember" name="ClassF2010UnitsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bdn_CommitmentsAndContingenciesTextualsAbstract" name="CommitmentsAndContingenciesTextualsAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="bdn_CommonPartnershipUnitsIssuedToParentCompany" name="CommonPartnershipUnitsIssuedToParentCompany" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration" />
  <xsd:element id="bdn_CommonSharesCapacityRestored" name="CommonSharesCapacityRestored" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="instant" />
  <xsd:element id="bdn_CommonSharesInGrantorTrust" name="CommonSharesInGrantorTrust" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="bdn_CommonStockInGrantorTrustMember" name="CommonStockInGrantorTrustMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="bdn_CompanyAgreedNotToSellAcquiredPropertiesUpToPeriod" name="CompanyAgreedNotToSellAcquiredPropertiesUpToPeriod" nillable="true" substitutionGroup="xbrli:item" type="us-types:durationStringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bdn_CompanysEstimatesOfFairValueDifferFromCarryingAmountsAbstract" name="CompanysEstimatesOfFairValueDifferFromCarryingAmountsAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bdn_ComponentsOfDeferredCostsNetAbstract" name="ComponentsOfDeferredCostsNetAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="bdn_ComponentsOfDeferredCostsNetTableTextBlock" name="ComponentsOfDeferredCostsNetTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bdn_ConsolidatedDebtObligationsAbstract" name="ConsolidatedDebtObligationsAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="bdn_ConsolidatedDebtObligationsTableTextBlock" name="ConsolidatedDebtObligationsTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bdn_ContractualObligationAxis" name="ContractualObligationAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bdn_ContractualObligationDomain" name="ContractualObligationDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="bdn_ContributionAllocatedInNonControllingInterest" name="ContributionAllocatedInNonControllingInterest" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:periodType="instant" />
  <xsd:element id="bdn_ContributionsFromHistoricTaxCreditTransactionNetOfDeferredCosts" name="ContributionsFromHistoricTaxCreditTransactionNetOfDeferredCosts" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bdn_CreditFacilityMember" name="CreditFacilityMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="bdn_DebtInstrumentInterestRatesEffectivePercentage" name="DebtInstrumentInterestRatesEffectivePercentage" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="instant" />
  <xsd:element id="bdn_DebtInstrumentMaturityDates" name="DebtInstrumentMaturityDates" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="instant" />
  <xsd:element id="bdn_DebtInstrumentTerm" name="DebtInstrumentTerm" nillable="true" substitutionGroup="xbrli:item" type="us-types:durationStringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bdn_DebtObligationsTextualsAbstract" name="DebtObligationsTextualsAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="bdn_DecliningPrepaymentPenaltyInYearOne" name="DecliningPrepaymentPenaltyInYearOne" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="bdn_DecliningPrepaymentPenaltyInYearThree" name="DecliningPrepaymentPenaltyInYearThree" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="bdn_DecliningPrepaymentPenaltyInYearTwo" name="DecliningPrepaymentPenaltyInYearTwo" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="bdn_DecreaseInRevenueDueToLeaseIncentives" name="DecreaseInRevenueDueToLeaseIncentives" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="bdn_DeferredCompensationArrangementWithIndividualDecreaseInCompensationExpense" name="DeferredCompensationArrangementWithIndividualDecreaseInCompensationExpense" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="bdn_DeferredCompensationArrangementWithIndividualIncreaseInCompensationExpense" name="DeferredCompensationArrangementWithIndividualIncreaseInCompensationExpense" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="bdn_DeferredCompensationPayableInCommonStock" name="DeferredCompensationPayableInCommonStock" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="bdn_DeferredCompensationPlanMember" name="DeferredCompensationPlanMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="bdn_DeferredCostsAccumulatedAmortization" name="DeferredCostsAccumulatedAmortization" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="bdn_DeferredCostsGross" name="DeferredCostsGross" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="bdn_DeferredCostsRelatedToPropertiesHeldForSale" name="DeferredCostsRelatedToPropertiesHeldForSale" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="bdn_DeferredCostsTextualsAbstract" name="DeferredCostsTextualsAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="bdn_DeferredGainDebt" name="DeferredGainDebt" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="bdn_DeferredIncomeGainsAndRent" name="DeferredIncomeGainsAndRent" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="bdn_DenominatorAbstract" name="DenominatorAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="bdn_DevelopmentCostsForLand" name="DevelopmentCostsForLand" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="bdn_DevelopmentInProcessRelatedToPropertiesHeldForSale" name="DevelopmentInProcessRelatedToPropertiesHeldForSale" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="bdn_DevelopmentPropertyMember" name="DevelopmentPropertyMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="bdn_DistributableIncomeMinimumPercentage" name="DistributableIncomeMinimumPercentage" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="bdn_DistributionDeclaredPerCommonPartnershipUnit" name="DistributionDeclaredPerCommonPartnershipUnit" nillable="true" substitutionGroup="xbrli:item" type="num:perShareItemType" xbrli:periodType="instant" />
  <xsd:element id="bdn_DividendRate" name="DividendRate" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="bdn_DocumentAndEntityInformationAbstract" name="DocumentAndEntityInformationAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bdn_EarningsPerCommonPartnershipUnitAbstract" name="EarningsPerCommonPartnershipUnitAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bdn_EarningsPerCommonPartnershipUnitLineItems" name="EarningsPerCommonPartnershipUnitLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bdn_EarningsPerCommonPartnershipUnitTable" name="EarningsPerCommonPartnershipUnitTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="bdn_EarningsPerCommonPartnershipUnitTableTextBlock" name="EarningsPerCommonPartnershipUnitTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bdn_EmployeeSharePurchasePlanMember" name="EmployeeSharePurchasePlanMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="bdn_EquityMethodInvestmentSummarizedFinancialInformationDebt" name="EquityMethodInvestmentSummarizedFinancialInformationDebt" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="bdn_EquityMethodInvestmentSummarizedFinancialInformationDepreciationAndAmortization" name="EquityMethodInvestmentSummarizedFinancialInformationDepreciationAndAmortization" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="bdn_EquityMethodInvestmentSummarizedFinancialInformationIncomeStatementTableTextBlock" name="EquityMethodInvestmentSummarizedFinancialInformationIncomeStatementTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="bdn_EquityMethodInvestmentSummarizedFinancialInformationInterestExpenseNet" name="EquityMethodInvestmentSummarizedFinancialInformationInterestExpenseNet" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="bdn_EquityMethodInvestmentSummarizedFinancialInformationNetProperty" name="EquityMethodInvestmentSummarizedFinancialInformationNetProperty" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="bdn_EquityMethodInvestmentSummarizedFinancialInformationOperatingExpenses" name="EquityMethodInvestmentSummarizedFinancialInformationOperatingExpenses" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="bdn_EquityMethodInvestmentSummarizedFinancialInformationOtherAssets" name="EquityMethodInvestmentSummarizedFinancialInformationOtherAssets" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="bdn_EquityMethodInvestmentSummarizedFinancialInformationOtherLiabilities" name="EquityMethodInvestmentSummarizedFinancialInformationOtherLiabilities" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="bdn_EquityMethodInvestmentSummarizedFinancialInformationTableTextBlock" name="EquityMethodInvestmentSummarizedFinancialInformationTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="bdn_ExpectedBenefitFromQualifiedProgram" name="ExpectedBenefitFromQualifiedProgram" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bdn_FairValueOfFinancialInstrumentsTextualsAbstract" name="FairValueOfFinancialInstrumentsTextualsAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bdn_FairviewElevenTowerMember" name="FairviewElevenTowerMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bdn_FederalFundsRateMember" name="FederalFundsRateMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bdn_FourYearTermLoanMember" name="FourYearTermLoanMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bdn_FourYearTermLoanSwappedToFixedMember" name="FourYearTermLoanSwappedToFixedMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bdn_FourYearTermLoanVariableMember" name="FourYearTermLoanVariableMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bdn_GibbsboroNewJerseyMember" name="GibbsboroNewJerseyMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bdn_GroundLeaseMember" name="GroundLeaseMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bdn_GroundRentMember" name="GroundRentMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="bdn_HeldToMaturitySecuritiesAnnualInterestIncomeRate" name="HeldToMaturitySecuritiesAnnualInterestIncomeRate" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="bdn_HeldToMaturitySecuritiesPremiumPaid" name="HeldToMaturitySecuritiesPremiumPaid" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="bdn_HistoricTaxCreditTransactionMember" name="HistoricTaxCreditTransactionMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="bdn_IfCompanyTakesFeeTitleToTwoLoganSquareUponForeclosureOfItsMortgageCompanyHasAgreedToPayUnaffiliatedThirdPartyThatHoldsResidualInterestInFeeOwnerOfThisProperty" name="IfCompanyTakesFeeTitleToTwoLoganSquareUponForeclosureOfItsMortgageCompanyHasAgreedToPayUnaffiliatedThirdPartyThatHoldsResidualInterestInFeeOwnerOfThisProperty" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="bdn_IncomeLossFromContinuingOperationsAvailableToCommonShareholdersBasic" name="IncomeLossFromContinuingOperationsAvailableToCommonShareholdersBasic" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="bdn_IncomeLossFromContinuingOperationsAvailableToCommonShareholdersDiluted" name="IncomeLossFromContinuingOperationsAvailableToCommonShareholdersDiluted" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="bdn_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNonControllingInterestDiluted" name="IncomeLossFromContinuingOperationsIncludingPortionAttributableToNonControllingInterestDiluted" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="bdn_IncomeLossFromDiscontinuedOperationsAvailableToCommonShareholdersBasic" name="IncomeLossFromDiscontinuedOperationsAvailableToCommonShareholdersBasic" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="bdn_IncomeLossFromDiscontinuedOperationsAvailableToCommonShareholdersDiluted" name="IncomeLossFromDiscontinuedOperationsAvailableToCommonShareholdersDiluted" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="bdn_IncomeLossFromDiscontinuedOperationsDiluted" name="IncomeLossFromDiscontinuedOperationsDiluted" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="bdn_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToNonControllingInterestDiluted" name="IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToNonControllingInterestDiluted" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="bdn_IncomeLossFromDiscontinuedOperationsNetOfTaxDiluted" name="IncomeLossFromDiscontinuedOperationsNetOfTaxDiluted" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="bdn_IncreaseDecreaseInDeferredIncomeGainsAndRents" name="IncreaseDecreaseInDeferredIncomeGainsAndRents" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="bdn_IncreaseInRevenueDueToAmortizationOfDeferredRent" name="IncreaseInRevenueDueToAmortizationOfDeferredRent" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="bdn_IncreaseInSharesDueToAmendmentsInPlan" name="IncreaseInSharesDueToAmendmentsInPlan" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="instant" />
  <xsd:element id="bdn_IncreaseInSharesDueToAmendmentsInPlanSharesSolelyAvailableForOptionsAndShareAppreciationRights" name="IncreaseInSharesDueToAmendmentsInPlanSharesSolelyAvailableForOptionsAndShareAppreciationRights" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="bdn_IndentureIaPreferredTrustIMember" name="IndentureIaPreferredTrustIMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bdn_IndentureIbPreferredTrustIMember" name="IndentureIbPreferredTrustIMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bdn_IndentureIiPreferredTrustIiMember" name="IndentureIiPreferredTrustIiMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bdn_IndustrialFacilitiesMember" name="IndustrialFacilitiesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bdn_InterestRateTypeAxis" name="InterestRateTypeAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bdn_InterestRateTypeDomain" name="InterestRateTypeDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bdn_InvestmentInUnconsolidatedVenturesTextualsAbstract" name="InvestmentInUnconsolidatedVenturesTextualsAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bdn_IrsPhiladelphiaCampusMember" name="IrsPhiladelphiaCampusMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="bdn_LeasePercentageOfSoldProperty" name="LeasePercentageOfSoldProperty" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="bdn_LeasedAreaOfBuilding" name="LeasedAreaOfBuilding" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element id="bdn_LimitOnTaxCreditClaimsUnderCommunityRenewalTaxRelief" name="LimitOnTaxCreditClaimsUnderCommunityRenewalTaxRelief" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="bdn_LineOfCreditFacilityOptionForAdditionalBorrowingCapacitySubjectToCustomaryConditionsAndLimitations" name="LineOfCreditFacilityOptionForAdditionalBorrowingCapacitySubjectToCustomaryConditionsAndLimitations" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="bdn_LoanProvidedToRealEstateVenturePartner" name="LoanProvidedToRealEstateVenturePartner" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="bdn_LongTermDebtMaturitiesRepaymentsOfPrincipal" name="LongTermDebtMaturitiesRepaymentsOfPrincipal" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="bdn_LossFromContinuingOperationsAvailableToCommonUnitholdersDiluted" name="LossFromContinuingOperationsAvailableToCommonUnitholdersDiluted" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="bdn_LossOnRealEstateVentureFormation" name="LossOnRealEstateVentureFormation" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bdn_ManagementCompanySubsidiariesMember" name="ManagementCompanySubsidiariesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="bdn_MarketPriceOfSharesOnAcquisitionDate" name="MarketPriceOfSharesOnAcquisitionDate" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:periodType="instant" />
  <xsd:element id="bdn_MaximumNumberOfShareToBeDeliveredUponMeasurementPeriodRelativeToShareholderReturn" name="MaximumNumberOfShareToBeDeliveredUponMeasurementPeriodRelativeToShareholderReturn" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="bdn_MaximumPercentageOfGrossSalePricePerShareCompensationToSalesAgents" name="MaximumPercentageOfGrossSalePricePerShareCompensationToSalesAgents" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="bdn_MaximumPercentageOfParticipantsBaseUnits" name="MaximumPercentageOfParticipantsBaseUnits" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="bdn_MaximumPercentageOfUnconsolidatedEquityMethodInvestmentOwnership" name="MaximumPercentageOfUnconsolidatedEquityMethodInvestmentOwnership" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="bdn_MaximumRemainingLeasePeriod" name="MaximumRemainingLeasePeriod" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="bdn_MeasurementPeriodIndexPercentageMinimum" name="MeasurementPeriodIndexPercentageMinimum" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="bdn_MeasurementPeriodIndexPercentageRemainingAmountComparedToTotalShareholderReturnOfRealEstateInvestmentTrustsWithinProxyPeerGroup" name="MeasurementPeriodIndexPercentageRemainingAmountComparedToTotalShareholderReturnOfRealEstateInvestmentTrustsWithinProxyPeerGroup" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="bdn_MetropolitanDcMember" name="MetropolitanDcMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="bdn_MinimumAmountOfAnnualRentalPayment" name="MinimumAmountOfAnnualRentalPayment" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="bdn_MinimumAmountOfAnnualRentalPayments" name="MinimumAmountOfAnnualRentalPayments" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="bdn_MinimumPercentageOfUnconsolidatedEquityMethodInvestmentOwnership" name="MinimumPercentageOfUnconsolidatedEquityMethodInvestmentOwnership" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="bdn_MinimumRemainingLeasePeriod" name="MinimumRemainingLeasePeriod" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="bdn_MixedUsePropertiesMember" name="MixedUsePropertiesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="bdn_NetLossIncomeFromContinuingOperationsAttributableToNonControllingInterestsBasic" name="NetLossIncomeFromContinuingOperationsAttributableToNonControllingInterestsBasic" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="bdn_NetLossIncomeFromContinuingOperationsAttributableToNonControllingInterestsDiluted" name="NetLossIncomeFromContinuingOperationsAttributableToNonControllingInterestsDiluted" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="bdn_NetRentableSpace" name="NetRentableSpace" nillable="true" substitutionGroup="xbrli:item" type="xbrli:decimalItemType" xbrli:periodType="instant" />
  <xsd:element id="bdn_NetRentableSpaceSold" name="NetRentableSpaceSold" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="bdn_NewJerseyDelawareMember" name="NewJerseyDelawareMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bdn_NewMarketsTaxCreditTransactionMember" name="NewMarketsTaxCreditTransactionMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bdn_NewtownSquareberwynParklibertyviewMember" name="NewtownSquareberwynParklibertyviewMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bdn_NoteEightMember" name="NoteEightMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bdn_NoteFiveMember" name="NoteFiveMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bdn_NoteFourMember" name="NoteFourMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bdn_NoteSevenMember" name="NoteSevenMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bdn_NoteSixMember" name="NoteSixMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bdn_NoteThreeMember" name="NoteThreeMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="bdn_NotesReceivableAmortizationPeriodYears" name="NotesReceivableAmortizationPeriodYears" nillable="true" substitutionGroup="xbrli:item" type="us-types:durationStringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bdn_NotesReceivableByMaturityAxis" name="NotesReceivableByMaturityAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bdn_NotesReceivableByMaturityDomain" name="NotesReceivableByMaturityDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="bdn_NotesReceivableCashPayInterestPercentage" name="NotesReceivableCashPayInterestPercentage" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bdn_NotesReceivableDueTwoThousandFifteenMember" name="NotesReceivableDueTwoThousandFifteenMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bdn_NotesReceivableDueTwoThousandSixteenMember" name="NotesReceivableDueTwoThousandSixteenMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="bdn_NotesReceivableInterestAccrualPercentage" name="NotesReceivableInterestAccrualPercentage" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="bdn_NumberOfEmployeesAchievingQualifyingRetirementForRestrictedShares" name="NumberOfEmployeesAchievingQualifyingRetirementForRestrictedShares" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="bdn_NumberOfEmployeesEligibleForQualifyingRetirement" name="NumberOfEmployeesEligibleForQualifyingRetirement" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="bdn_NumberOfOfficeBuildingsInRealEstateVentures" name="NumberOfOfficeBuildingsInRealEstateVentures" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="bdn_NumberOfPropertiesSold" name="NumberOfPropertiesSold" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element id="bdn_NumberOfPropertiesSoldSubsequentToBalanceSheetDate" name="NumberOfPropertiesSoldSubsequentToBalanceSheetDate" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="bdn_NumberOfRealEstatePropertiesSold" name="NumberOfRealEstatePropertiesSold" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="bdn_NumberOfRealEstateVenturesDevelopedHotelProperty" name="NumberOfRealEstateVenturesDevelopedHotelProperty" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="bdn_NumberOfRealEstateVenturesThatOwnsBuildings" name="NumberOfRealEstateVenturesThatOwnsBuildings" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="bdn_NumberOfRealEstateVenturesThatOwnsUndevelopedLand" name="NumberOfRealEstateVenturesThatOwnsUndevelopedLand" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="bdn_NumberOfRoomsContainInOneRealEstateVentureDevelopedAsHotelProperty" name="NumberOfRoomsContainInOneRealEstateVentureDevelopedAsHotelProperty" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="bdn_NumberOfSharesSoldByCompany" name="NumberOfSharesSoldByCompany" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration" />
  <xsd:element id="bdn_NumberOfSharesToBeIssuedUnderDeferredCompensationPlanIncludedInSharesOutstanding" name="NumberOfSharesToBeIssuedUnderDeferredCompensationPlanIncludedInSharesOutstanding" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="instant" />
  <xsd:element id="bdn_NumberOfUnconsolidatedInvestmentsInRealEstateVentures" name="NumberOfUnconsolidatedInvestmentsInRealEstateVentures" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="bdn_NumberOfUnconsolidatedRealEstateVentures" name="NumberOfUnconsolidatedRealEstateVentures" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="bdn_NumeratorAbstract" name="NumeratorAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bdn_OaklandsCorporateCenterMember" name="OaklandsCorporateCenterMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bdn_OfferingProgramMember" name="OfferingProgramMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bdn_OfficePropertiesMember" name="OfficePropertiesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="bdn_OperatingLeasesFutureMinimumPaymentsDueTableTextBlock" name="OperatingLeasesFutureMinimumPaymentsDueTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="bdn_OperatingRealEstateInvestmentPropertiesHeldForSaleNet" name="OperatingRealEstateInvestmentPropertiesHeldForSaleNet" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="bdn_OptionToExtendTermLoan" name="OptionToExtendTermLoan" nillable="true" substitutionGroup="xbrli:item" type="us-types:durationStringItemType" xbrli:periodType="duration" />
  <xsd:element id="bdn_OptionsAwardedTerm" name="OptionsAwardedTerm" nillable="true" substitutionGroup="xbrli:item" type="us-types:durationStringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bdn_OrganizationOfParentCompanyAndOperatingPartnershipLineItems" name="OrganizationOfParentCompanyAndOperatingPartnershipLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bdn_OrganizationOfParentCompanyAndOperatingPartnershipTable" name="OrganizationOfParentCompanyAndOperatingPartnershipTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bdn_OrganizationOfParentCompanyAndOperatingPartnershipTextualsAbstract" name="OrganizationOfParentCompanyAndOperatingPartnershipTextualsAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="bdn_OtherAssetsRelatedToAssetsHeldForSale" name="OtherAssetsRelatedToAssetsHeldForSale" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="bdn_OutperformancePlanAmortization" name="OutperformancePlanAmortization" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="bdn_OutperformancePlanAmortizationShares" name="OutperformancePlanAmortizationShares" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bdn_PacificRidgeCorporateCenterMember" name="PacificRidgeCorporateCenterMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="bdn_PartnersEquityOfOperatingPartnershipTextBlock" name="PartnersEquityOfOperatingPartnershipTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bdn_PartnersEquityOfOperatingPartnershipTextualsAbstract" name="PartnersEquityOfOperatingPartnershipTextualsAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="bdn_PartnershipUnitsIssuedForAcquisition" name="PartnershipUnitsIssuedForAcquisition" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="bdn_PennsylvaniaMember" name="PennsylvaniaMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="bdn_PercentageOfBuildingLeasedToIrs" name="PercentageOfBuildingLeasedToIrs" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="bdn_PercentageOfPlanContribution" name="PercentageOfPlanContribution" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="bdn_PercentageOfQualifiedInvestments" name="PercentageOfQualifiedInvestments" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="bdn_PercentageOfTaxCreditRecapture" name="PercentageOfTaxCreditRecapture" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="bdn_PermanentBasisAdjustmentBetweenCarryingValueAndFairValue" name="PermanentBasisAdjustmentBetweenCarryingValueAndFairValue" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="bdn_PhiladelphiaCbdMember" name="PhiladelphiaCbdMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bdn_PlymouthMeetingPennsylvaniaMember" name="PlymouthMeetingPennsylvaniaMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="bdn_PreferredStockDividendsDiluted" name="PreferredStockDividendsDiluted" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="bdn_PreferredStockPerSharePerAnnum" name="PreferredStockPerSharePerAnnum" nillable="true" substitutionGroup="xbrli:item" type="num:perShareItemType" xbrli:periodType="instant" />
  <xsd:element id="bdn_PrincipalAmountOfHeldToMaturitySecuritiesSold" name="PrincipalAmountOfHeldToMaturitySecuritiesSold" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="bdn_PropertiesHeldForSale" name="PropertiesHeldForSale" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="bdn_PropertyLocationAxis" name="PropertyLocationAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bdn_PropertyLocationDomain" name="PropertyLocationDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="bdn_PurchaseMoneyMortgageLoanRepaymentsTerms" name="PurchaseMoneyMortgageLoanRepaymentsTerms" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bdn_PurchaseMoneyMortgageMember" name="PurchaseMoneyMortgageMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="bdn_RateOfReturnOnNoncontrollingInterest" name="RateOfReturnOnNoncontrollingInterest" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="bdn_RealEstateAccumulatedDepreciationRelatedToPropertiesHeldForSal" name="RealEstateAccumulatedDepreciationRelatedToPropertiesHeldForSal" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="bdn_RealEstateInvestmentPropertiesHeldForSaleNet" name="RealEstateInvestmentPropertiesHeldForSaleNet" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="bdn_RealEstateInvestmentsAtCostAbstract" name="RealEstateInvestmentsAtCostAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="bdn_RealEstateInvestmentsNet" name="RealEstateInvestmentsNet" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="bdn_RecentAccountingPronouncementPolicyTextBlock" name="RecentAccountingPronouncementPolicyTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="bdn_RecognitionOfCashReceivedAsRevenueNetOfAllocatedExpenses" name="RecognitionOfCashReceivedAsRevenueNetOfAllocatedExpenses" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="bdn_RecognitionOfCashReceivedAsRevenueNetOfAllocatedExpensesPeriodCreditRecaptureInYears" name="RecognitionOfCashReceivedAsRevenueNetOfAllocatedExpensesPeriodCreditRecaptureInYears" nillable="true" substitutionGroup="xbrli:item" type="us-types:durationStringItemType" xbrli:periodType="duration" />
  <xsd:element id="bdn_ReconciliationOfConsolidatedNetOperatingIncomeTableTextBlock" name="ReconciliationOfConsolidatedNetOperatingIncomeTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="bdn_RedeemableLimitedPartnershipUnitsIssued" name="RedeemableLimitedPartnershipUnitsIssued" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="bdn_RedeemableLimitedPartnershipUnitsOutstanding" name="RedeemableLimitedPartnershipUnitsOutstanding" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="bdn_RedemptionPremiumDiluted" name="RedemptionPremiumDiluted" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="bdn_RemainingSharesAvailableForSales" name="RemainingSharesAvailableForSales" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bdn_RestrictedPerformanceShareUnitsPlanMember" name="RestrictedPerformanceShareUnitsPlanMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="bdn_RestrictedPerformanceUnitsAmortization" name="RestrictedPerformanceUnitsAmortization" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="bdn_RestrictedStockAmortization" name="RestrictedStockAmortization" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="bdn_RevenueAndExpenseInformationForPropertyClassifiedAsDiscontinuedOperationsTableTextBlock" name="RevenueAndExpenseInformationForPropertyClassifiedAsDiscontinuedOperationsTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="bdn_RevenueIncreasedByStraightLineRentAdjustment" name="RevenueIncreasedByStraightLineRentAdjustment" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bdn_RichmondVirginiaMember" name="RichmondVirginiaMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="bdn_SaleConsiderationOfSoldProperty" name="SaleConsiderationOfSoldProperty" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:periodType="instant" />
  <xsd:element id="bdn_ScheduleOfFinancialInstrumentsWithFairValuesDifferentFromTheirCarryingAmountTableTextBlock" name="ScheduleOfFinancialInstrumentsWithFairValuesDifferentFromTheirCarryingAmountTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="bdn_ScheduleOfRentalPropertiesTableTextBlock" name="ScheduleOfRentalPropertiesTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="bdn_SecuredDebtPrincipalBalanceOutstanding" name="SecuredDebtPrincipalBalanceOutstanding" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="bdn_SecuredDebtPrincipalBalanceOutstandingFairValueDisclosure" name="SecuredDebtPrincipalBalanceOutstandingFairValueDisclosure" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="bdn_SegmentsInformationAbstract" name="SegmentsInformationAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bdn_SeniorNotes5400PercentDue2014Member" name="SeniorNotes5400PercentDue2014Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bdn_SeniorNotesDue2012Member" name="SeniorNotesDue2012Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bdn_SeniorNotesDue2015Member" name="SeniorNotesDue2015Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bdn_SeriesDPreferredStocksMember" name="SeriesDPreferredStocksMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bdn_SeriesELinkedPreferredStockMember" name="SeriesELinkedPreferredStockMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="bdn_SettlementValueOfNonControllingInterestInOperatingPartnership" name="SettlementValueOfNonControllingInterestInOperatingPartnership" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="bdn_SevenYearTermLoanMember" name="SevenYearTermLoanMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bdn_ShareBasedAndDeferredCompensationTextualsAbstract" name="ShareBasedAndDeferredCompensationTextualsAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="bdn_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingTermMaximum" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingTermMaximum" nillable="true" substitutionGroup="xbrli:item" type="us-types:durationStringItemType" xbrli:periodType="duration" />
  <xsd:element id="bdn_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingTermMinimum" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingTermMinimum" nillable="true" substitutionGroup="xbrli:item" type="us-types:durationStringItemType" xbrli:periodType="duration" />
  <xsd:element id="bdn_ShareBasedCompensationArrangementByShareBasedPaymentAwardCliffVestingAfterGrantDateMinimum" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardCliffVestingAfterGrantDateMinimum" nillable="true" substitutionGroup="xbrli:item" type="us-types:durationStringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bdn_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionActivityAbstract" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionActivityAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="bdn_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerms" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerms" nillable="true" substitutionGroup="xbrli:item" type="xbrli:decimalItemType" xbrli:periodType="instant" />
  <xsd:element id="bdn_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExercisableIntrinsicValue" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExercisableIntrinsicValue" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="bdn_ShareBasedCompensationArrangementByShareBasedPaymentAwardRecognizedCompensationExpenseAwardsNominalAmountsCapitalized" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardRecognizedCompensationExpenseAwardsNominalAmountsCapitalized" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="bdn_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesAreDelivered" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesAreDelivered" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="instant" />
  <xsd:element id="bdn_ShareBasedCompensationArrangementByShareBasedPaymentAwardTermsOfPurchaseCommonSharesUnderEmployeeStockPurchasePlanPercentage" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardTermsOfPurchaseCommonSharesUnderEmployeeStockPurchasePlanPercentage" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="bdn_ShareBasedCompensationArrangementByShareBasedPaymentAwardTermsOfPurchaseCommonSharesUnderEspp" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardTermsOfPurchaseCommonSharesUnderEspp" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="bdn_ShareBasedCompensationArrangementByShareBasedPaymentAwardVestingperiod1" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardVestingperiod1" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="bdn_ShareBasedCompensationArrangementByShareBasedPaymentAwardWeightedAveragePriceOfSharesPurchased" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardWeightedAveragePriceOfSharesPurchased" nillable="true" substitutionGroup="xbrli:item" type="num:perShareItemType" xbrli:periodType="duration" />
  <xsd:element id="bdn_ShareBasedCompensationArrangementByShareBasedPaymentStockOptionsNonvestedNumber" name="ShareBasedCompensationArrangementByShareBasedPaymentStockOptionsNonvestedNumber" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="bdn_ShareBasedCompensationArrangementsRestrictedShareActivityAbstract" name="ShareBasedCompensationArrangementsRestrictedShareActivityAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="bdn_ShareChoicePlanIssuanceShares" name="ShareChoicePlanIssuanceShares" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration" />
  <xsd:element id="bdn_ShareChoicePlanIssuanceValue" name="ShareChoicePlanIssuanceValue" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="bdn_ShareIssuanceFromDeferredCompensationPlan" name="ShareIssuanceFromDeferredCompensationPlan" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="bdn_ShareIssuanceFromDeferredCompensationPlanShares" name="ShareIssuanceFromDeferredCompensationPlanShares" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration" />
  <xsd:element id="bdn_SharesAuthorizedForEquityOfferingProgram" name="SharesAuthorizedForEquityOfferingProgram" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bdn_SouthLakeAtDullusCornerMember" name="SouthLakeAtDullusCornerMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bdn_SouthpointIiiMember" name="SouthpointIiiMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="bdn_StockIssuedDuringPeriodSharesVestingOfRestrictedPerformanceUnits" name="StockIssuedDuringPeriodSharesVestingOfRestrictedPerformanceUnits" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration" />
  <xsd:element id="bdn_StockIssuedDuringPeriodValueVestingOfRestrictedPerformanceUnits" name="StockIssuedDuringPeriodValueVestingOfRestrictedPerformanceUnits" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="bdn_StraightLineGroundRentExpense" name="StraightLineGroundRentExpense" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="bdn_SummaryOfDebtRepurchasesTableTextBlock" name="SummaryOfDebtRepurchasesTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bdn_SummaryOfSignificantAccountingPoliciesAbstract" name="SummaryOfSignificantAccountingPoliciesAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bdn_SummaryOfSignificantAccountingPoliciesTextualsAbstract" name="SummaryOfSignificantAccountingPoliciesTextualsAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bdn_TaxCreditTransactionsAxis" name="TaxCreditTransactionsAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bdn_TaxCreditTransactionsDomain" name="TaxCreditTransactionsDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bdn_TaxCreditTransactionsTextualsAbstract" name="TaxCreditTransactionsTextualsAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bdn_TbBdnPlymouthApartmentsMember" name="TbBdnPlymouthApartmentsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bdn_ThirdPartiesAndRealEstateVenturesMember" name="ThirdPartiesAndRealEstateVenturesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bdn_ThreeAndFourYearTermLoanMember" name="ThreeAndFourYearTermLoanMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bdn_ThreeLoganSquareMember" name="ThreeLoganSquareMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bdn_ThreeYearTermLoanMember" name="ThreeYearTermLoanMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bdn_TotalPartnersEquityMember" name="TotalPartnersEquityMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bdn_TotalPropertiesMember" name="TotalPropertiesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bdn_TrentonPropertiesMember" name="TrentonPropertiesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bdn_TwentyYearAmortizationPeriodMember" name="TwentyYearAmortizationPeriodMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bdn_TwoLoganSquareMember" name="TwoLoganSquareMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bdn_TysonsCornerMember" name="TysonsCornerMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bdn_USBMember" name="USBMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="bdn_UnsecuredIndebtedness" name="UnsecuredIndebtedness" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="bdn_UnsecuredNotesPayableNetOfDiscountsCarryingAmount" name="UnsecuredNotesPayableNetOfDiscountsCarryingAmount" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="bdn_UnsecuredNotesPayableNetOfDiscountsFairValue" name="UnsecuredNotesPayableNetOfDiscountsFairValue" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="bdn_VariableRateDebtInstrumentsCarryingAmount" name="VariableRateDebtInstrumentsCarryingAmount" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="bdn_VariableRateDebtInstrumentsFairValue" name="VariableRateDebtInstrumentsFairValue" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="bdn_VoluntaryTerminationOfEmploymentTerms" name="VoluntaryTerminationOfEmploymentTerms" nillable="true" substitutionGroup="xbrli:item" type="us-types:durationStringItemType" xbrli:periodType="duration" />
  <xsd:element id="bdn_WeightedAverageFairValueInterestRateOnDebt" name="WeightedAverageFairValueInterestRateOnDebt" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
</xsd:schema>
