0000915912 12/31 2021 Q3 FALSE true false 0000915912 2021-01-01 2021-09-30 xbrli:shares 0000915912 2021-10-29 iso4217:USD 0000915912 2021-09-30 0000915912 2020-12-31 iso4217:USD xbrli:shares 0000915912 2021-07-01 2021-09-30 0000915912 2020-07-01 2020-09-30 0000915912 2020-01-01 2020-09-30 0000915912 2019-12-31 0000915912 2020-09-30 0000915912 avb:RestrictedStockandRestrictedStockConvertedFromPerformanceSharesMember 2021-01-01 2021-09-30 0000915912 us-gaap:PerformanceSharesMember 2021-01-01 2021-09-30 0000915912 us-gaap:RestrictedStockMember 2021-01-01 2021-09-30 0000915912 us-gaap:CommonStockMember 2021-09-30 0000915912 us-gaap:RetainedEarningsMember 2021-01-01 2021-09-30 0000915912 us-gaap:InterestExpenseMember 2021-01-01 2021-09-30 0000915912 avb:GainLossOnExtinguishmentOfDebtMember 2021-01-01 2021-09-30 0000915912 avb:RestrictedStockandRestrictedStockConvertedFromPerformanceSharesMember 2020-01-01 2020-09-30 0000915912 avb:RestrictedStockConvertedFromPerformanceSharesMember 2020-01-01 2020-09-30 0000915912 us-gaap:RestrictedStockMember 2020-01-01 2020-09-30 0000915912 us-gaap:CommonStockMember 2020-09-30 0000915912 us-gaap:RetainedEarningsMember 2020-01-01 2020-09-30 0000915912 us-gaap:AccountingStandardsUpdate201602Member 2020-09-30 avb:Lease 0000915912 avb:NewOfficeLeasesMember 2020-09-30 avb:community avb:home avb:state avb:residential_condominium 0000915912 avb:TheParkLoggiaMember 2021-09-30 0000915912 2020-01-01 2021-09-30 utr:sqft xbrli:pure 0000915912 us-gaap:SegmentContinuingOperationsMember us-gaap:OperatingSegmentsMember avb:EstablishedCommunitiesMember avb:ManagementDevelopmentAndOtherMember 2021-07-01 2021-09-30 0000915912 avb:OtherStabilizedCommunitiesMember us-gaap:SegmentContinuingOperationsMember us-gaap:OperatingSegmentsMember avb:ManagementDevelopmentAndOtherMember 2021-07-01 2021-09-30 0000915912 us-gaap:SegmentContinuingOperationsMember us-gaap:OperatingSegmentsMember avb:DevelopmentRedevelopmentCommunitiesMember avb:ManagementDevelopmentAndOtherMember 2021-07-01 2021-09-30 0000915912 us-gaap:SegmentContinuingOperationsMember avb:ManagementDevelopmentAndOtherMember us-gaap:CorporateNonSegmentMember 2021-07-01 2021-09-30 0000915912 us-gaap:SegmentContinuingOperationsMember avb:ManagementDevelopmentAndOtherMember 2021-07-01 2021-09-30 0000915912 avb:RentalAndNonRentalMember us-gaap:SegmentContinuingOperationsMember us-gaap:OperatingSegmentsMember avb:EstablishedCommunitiesMember 2021-07-01 2021-09-30 0000915912 avb:RentalAndNonRentalMember avb:OtherStabilizedCommunitiesMember us-gaap:SegmentContinuingOperationsMember us-gaap:OperatingSegmentsMember 2021-07-01 2021-09-30 0000915912 avb:RentalAndNonRentalMember us-gaap:SegmentContinuingOperationsMember us-gaap:OperatingSegmentsMember avb:DevelopmentRedevelopmentCommunitiesMember 2021-07-01 2021-09-30 0000915912 avb:RentalAndNonRentalMember us-gaap:SegmentContinuingOperationsMember us-gaap:CorporateNonSegmentMember 2021-07-01 2021-09-30 0000915912 avb:RentalAndNonRentalMember us-gaap:SegmentContinuingOperationsMember 2021-07-01 2021-09-30 0000915912 us-gaap:SegmentContinuingOperationsMember us-gaap:OperatingSegmentsMember avb:EstablishedCommunitiesMember 2021-07-01 2021-09-30 0000915912 avb:OtherStabilizedCommunitiesMember us-gaap:SegmentContinuingOperationsMember us-gaap:OperatingSegmentsMember 2021-07-01 2021-09-30 0000915912 us-gaap:SegmentContinuingOperationsMember us-gaap:OperatingSegmentsMember avb:DevelopmentRedevelopmentCommunitiesMember 2021-07-01 2021-09-30 0000915912 us-gaap:SegmentContinuingOperationsMember us-gaap:CorporateNonSegmentMember 2021-07-01 2021-09-30 0000915912 us-gaap:SegmentContinuingOperationsMember 2021-07-01 2021-09-30 0000915912 us-gaap:SegmentContinuingOperationsMember us-gaap:OperatingSegmentsMember avb:EstablishedCommunitiesMember avb:ManagementDevelopmentAndOtherMember 2020-07-01 2020-09-30 0000915912 avb:OtherStabilizedCommunitiesMember us-gaap:SegmentContinuingOperationsMember us-gaap:OperatingSegmentsMember avb:ManagementDevelopmentAndOtherMember 2020-07-01 2020-09-30 0000915912 us-gaap:SegmentContinuingOperationsMember us-gaap:OperatingSegmentsMember avb:DevelopmentRedevelopmentCommunitiesMember avb:ManagementDevelopmentAndOtherMember 2020-07-01 2020-09-30 0000915912 us-gaap:SegmentContinuingOperationsMember avb:ManagementDevelopmentAndOtherMember us-gaap:CorporateNonSegmentMember 2020-07-01 2020-09-30 0000915912 us-gaap:SegmentContinuingOperationsMember avb:ManagementDevelopmentAndOtherMember 2020-07-01 2020-09-30 0000915912 avb:RentalAndNonRentalMember us-gaap:SegmentContinuingOperationsMember us-gaap:OperatingSegmentsMember avb:EstablishedCommunitiesMember 2020-07-01 2020-09-30 0000915912 avb:RentalAndNonRentalMember avb:OtherStabilizedCommunitiesMember us-gaap:SegmentContinuingOperationsMember us-gaap:OperatingSegmentsMember 2020-07-01 2020-09-30 0000915912 avb:RentalAndNonRentalMember us-gaap:SegmentContinuingOperationsMember us-gaap:OperatingSegmentsMember avb:DevelopmentRedevelopmentCommunitiesMember 2020-07-01 2020-09-30 0000915912 avb:RentalAndNonRentalMember us-gaap:SegmentContinuingOperationsMember us-gaap:CorporateNonSegmentMember 2020-07-01 2020-09-30 0000915912 avb:RentalAndNonRentalMember us-gaap:SegmentContinuingOperationsMember 2020-07-01 2020-09-30 0000915912 us-gaap:SegmentContinuingOperationsMember us-gaap:OperatingSegmentsMember avb:EstablishedCommunitiesMember 2020-07-01 2020-09-30 0000915912 avb:OtherStabilizedCommunitiesMember us-gaap:SegmentContinuingOperationsMember us-gaap:OperatingSegmentsMember 2020-07-01 2020-09-30 0000915912 us-gaap:SegmentContinuingOperationsMember us-gaap:OperatingSegmentsMember avb:DevelopmentRedevelopmentCommunitiesMember 2020-07-01 2020-09-30 0000915912 us-gaap:SegmentContinuingOperationsMember us-gaap:CorporateNonSegmentMember 2020-07-01 2020-09-30 0000915912 us-gaap:SegmentContinuingOperationsMember 2020-07-01 2020-09-30 0000915912 us-gaap:SegmentContinuingOperationsMember us-gaap:OperatingSegmentsMember avb:EstablishedCommunitiesMember avb:ManagementDevelopmentAndOtherMember 2021-01-01 2021-09-30 0000915912 avb:OtherStabilizedCommunitiesMember us-gaap:SegmentContinuingOperationsMember us-gaap:OperatingSegmentsMember avb:ManagementDevelopmentAndOtherMember 2021-01-01 2021-09-30 0000915912 us-gaap:SegmentContinuingOperationsMember us-gaap:OperatingSegmentsMember avb:DevelopmentRedevelopmentCommunitiesMember avb:ManagementDevelopmentAndOtherMember 2021-01-01 2021-09-30 0000915912 us-gaap:SegmentContinuingOperationsMember avb:ManagementDevelopmentAndOtherMember us-gaap:CorporateNonSegmentMember 2021-01-01 2021-09-30 0000915912 us-gaap:SegmentContinuingOperationsMember avb:ManagementDevelopmentAndOtherMember 2021-01-01 2021-09-30 0000915912 avb:RentalAndNonRentalMember us-gaap:SegmentContinuingOperationsMember us-gaap:OperatingSegmentsMember avb:EstablishedCommunitiesMember 2021-01-01 2021-09-30 0000915912 avb:RentalAndNonRentalMember avb:OtherStabilizedCommunitiesMember us-gaap:SegmentContinuingOperationsMember us-gaap:OperatingSegmentsMember 2021-01-01 2021-09-30 0000915912 avb:RentalAndNonRentalMember us-gaap:SegmentContinuingOperationsMember us-gaap:OperatingSegmentsMember avb:DevelopmentRedevelopmentCommunitiesMember 2021-01-01 2021-09-30 0000915912 avb:RentalAndNonRentalMember us-gaap:SegmentContinuingOperationsMember us-gaap:CorporateNonSegmentMember 2021-01-01 2021-09-30 0000915912 avb:RentalAndNonRentalMember us-gaap:SegmentContinuingOperationsMember 2021-01-01 2021-09-30 0000915912 us-gaap:SegmentContinuingOperationsMember us-gaap:OperatingSegmentsMember avb:EstablishedCommunitiesMember 2021-01-01 2021-09-30 0000915912 avb:OtherStabilizedCommunitiesMember us-gaap:SegmentContinuingOperationsMember us-gaap:OperatingSegmentsMember 2021-01-01 2021-09-30 0000915912 us-gaap:SegmentContinuingOperationsMember us-gaap:OperatingSegmentsMember avb:DevelopmentRedevelopmentCommunitiesMember 2021-01-01 2021-09-30 0000915912 us-gaap:SegmentContinuingOperationsMember us-gaap:CorporateNonSegmentMember 2021-01-01 2021-09-30 0000915912 us-gaap:SegmentContinuingOperationsMember 2021-01-01 2021-09-30 0000915912 us-gaap:SegmentContinuingOperationsMember us-gaap:OperatingSegmentsMember avb:EstablishedCommunitiesMember avb:ManagementDevelopmentAndOtherMember 2020-01-01 2020-09-30 0000915912 avb:OtherStabilizedCommunitiesMember us-gaap:SegmentContinuingOperationsMember us-gaap:OperatingSegmentsMember avb:ManagementDevelopmentAndOtherMember 2020-01-01 2020-09-30 0000915912 us-gaap:SegmentContinuingOperationsMember us-gaap:OperatingSegmentsMember avb:DevelopmentRedevelopmentCommunitiesMember avb:ManagementDevelopmentAndOtherMember 2020-01-01 2020-09-30 0000915912 us-gaap:SegmentContinuingOperationsMember avb:ManagementDevelopmentAndOtherMember us-gaap:CorporateNonSegmentMember 2020-01-01 2020-09-30 0000915912 us-gaap:SegmentContinuingOperationsMember avb:ManagementDevelopmentAndOtherMember 2020-01-01 2020-09-30 0000915912 avb:RentalAndNonRentalMember us-gaap:SegmentContinuingOperationsMember us-gaap:OperatingSegmentsMember avb:EstablishedCommunitiesMember 2020-01-01 2020-09-30 0000915912 avb:RentalAndNonRentalMember avb:OtherStabilizedCommunitiesMember us-gaap:SegmentContinuingOperationsMember us-gaap:OperatingSegmentsMember 2020-01-01 2020-09-30 0000915912 avb:RentalAndNonRentalMember us-gaap:SegmentContinuingOperationsMember us-gaap:OperatingSegmentsMember avb:DevelopmentRedevelopmentCommunitiesMember 2020-01-01 2020-09-30 0000915912 avb:RentalAndNonRentalMember us-gaap:SegmentContinuingOperationsMember us-gaap:CorporateNonSegmentMember 2020-01-01 2020-09-30 0000915912 avb:RentalAndNonRentalMember us-gaap:SegmentContinuingOperationsMember 2020-01-01 2020-09-30 0000915912 us-gaap:SegmentContinuingOperationsMember us-gaap:OperatingSegmentsMember avb:EstablishedCommunitiesMember 2020-01-01 2020-09-30 0000915912 avb:OtherStabilizedCommunitiesMember us-gaap:SegmentContinuingOperationsMember us-gaap:OperatingSegmentsMember 2020-01-01 2020-09-30 0000915912 us-gaap:SegmentContinuingOperationsMember us-gaap:OperatingSegmentsMember avb:DevelopmentRedevelopmentCommunitiesMember 2020-01-01 2020-09-30 0000915912 us-gaap:SegmentContinuingOperationsMember us-gaap:CorporateNonSegmentMember 2020-01-01 2020-09-30 0000915912 us-gaap:SegmentContinuingOperationsMember 2020-01-01 2020-09-30 0000915912 us-gaap:UnsecuredDebtMember 2021-09-30 0000915912 us-gaap:UnsecuredDebtMember 2020-12-31 0000915912 avb:VariableRateUnsecuredTermLoanMember 2021-09-30 0000915912 avb:VariableRateUnsecuredTermLoanMember 2020-12-31 0000915912 us-gaap:SecuredDebtMember 2021-09-30 0000915912 us-gaap:SecuredDebtMember 2020-12-31 0000915912 avb:AvalonSanBrunoIIMember us-gaap:SecuredDebtMember avb:NotesPayableMaturities2021Member 2021-01-01 2021-01-31 0000915912 avb:NotesPayableMaturities2021Member 2021-01-31 0000915912 avb:NotesPayableMaturities2022Member us-gaap:UnsecuredDebtMember 2021-09-01 2021-09-30 0000915912 avb:NotesPayableMaturities2022Member us-gaap:UnsecuredDebtMember 2021-09-30 0000915912 avb:NotesPayableMaturities2022Member 2021-09-01 2021-09-30 0000915912 avb:UnsecuredNotes205PercentMember 2021-09-30 0000915912 avb:UnsecuredNotes205PercentMember 2021-09-01 2021-09-30 0000915912 avb:UnsecuredNotes205PercentMember us-gaap:UnsecuredDebtMember 2021-09-30 0000915912 us-gaap:LineOfCreditMember 2021-09-30 0000915912 us-gaap:LondonInterbankOfferedRateLIBORMember us-gaap:LineOfCreditMember 2021-01-01 2021-09-30 0000915912 us-gaap:LondonInterbankOfferedRateLIBORMember us-gaap:LineOfCreditMember 2021-09-30 0000915912 us-gaap:LineOfCreditMember 2021-01-01 2021-09-30 0000915912 us-gaap:LineOfCreditMember 2020-12-31 0000915912 avb:OtherLetterofCreditMember 2021-09-30 0000915912 avb:OtherLetterofCreditMember 2020-12-31 0000915912 avb:FixedRateMortgageNotesPayableMember 2020-12-31 0000915912 avb:FixedRateMortgageNotesPayableMember 2021-09-30 0000915912 avb:VariableRateMortgageNotesPayableUnsecuredTermLoanAndCreditFacilityMember 2021-09-30 0000915912 avb:VariableRateMortgageNotesPayableUnsecuredTermLoanAndCreditFacilityMember 2020-12-31 0000915912 us-gaap:SecuredDebtMember avb:NotesPayableMaturities2021Member 2021-09-30 0000915912 us-gaap:SecuredDebtMember avb:NotesPayableMaturities2022Member 2021-09-30 0000915912 avb:VariableRateUnsecuredTermLoan100MillionMember us-gaap:UnsecuredDebtMember 2021-09-30 0000915912 us-gaap:LondonInterbankOfferedRateLIBORMember avb:VariableRateUnsecuredTermLoan100MillionMember us-gaap:UnsecuredDebtMember 2021-01-01 2021-09-30 0000915912 avb:NotesPayableMaturities2023Member us-gaap:SecuredDebtMember 2021-09-30 0000915912 avb:NotesPayable4.200Maturities2023Member us-gaap:UnsecuredDebtMember 2021-09-30 0000915912 avb:NotesPayable2.850Maturities2023Member us-gaap:UnsecuredDebtMember 2021-09-30 0000915912 avb:NotesPayableMaturities2024Member us-gaap:SecuredDebtMember 2021-09-30 0000915912 avb:NotesPayableMaturities2024Member us-gaap:UnsecuredDebtMember 2021-09-30 0000915912 avb:VariableRateUnsecuredTermLoan150MillionMember us-gaap:UnsecuredDebtMember 2021-09-30 0000915912 us-gaap:LondonInterbankOfferedRateLIBORMember avb:VariableRateUnsecuredTermLoan150MillionMember us-gaap:UnsecuredDebtMember 2021-01-01 2021-09-30 0000915912 us-gaap:SecuredDebtMember avb:NotesPayableMaturities2025Member 2021-09-30 0000915912 avb:NotesPayable3.450Maturities2025Member us-gaap:UnsecuredDebtMember 2021-09-30 0000915912 us-gaap:UnsecuredDebtMember avb:NotesPayable3.500Maturities2025Member 2021-09-30 0000915912 us-gaap:SecuredDebtMember avb:NotesPayableMaturities2026Member 2021-09-30 0000915912 avb:NotesPayable2.950Maturities2026Member us-gaap:UnsecuredDebtMember 2021-09-30 0000915912 avb:NotesPayable2.900Maturities2026Member us-gaap:UnsecuredDebtMember 2021-09-30 0000915912 us-gaap:SecuredDebtMember avb:NotesPayableMaturities2027Member 2021-09-30 0000915912 us-gaap:UnsecuredDebtMember avb:NotesPayableMaturities2027Member 2021-09-30 0000915912 us-gaap:SecuredDebtMember avb:NotesPayableMaturities2028Member 2021-09-30 0000915912 avb:NotesPayableMaturities2028Member us-gaap:UnsecuredDebtMember 2021-09-30 0000915912 avb:NotesPayableMaturities2029Member us-gaap:SecuredDebtMember 2021-09-30 0000915912 avb:NotesPayableMaturities2029Member us-gaap:UnsecuredDebtMember 2021-09-30 0000915912 avb:NotesPayableMaturities2030Member us-gaap:SecuredDebtMember 2021-09-30 0000915912 avb:NotesPayableMaturities2030Member us-gaap:UnsecuredDebtMember 2021-09-30 0000915912 us-gaap:SecuredDebtMember avb:NotesPayableMaturitiesThereafterMember 2021-09-30 0000915912 avb:NotesPayableMaturities2031Member us-gaap:UnsecuredDebtMember 2021-09-30 0000915912 avb:NotesPayableMaturities2032Member us-gaap:UnsecuredDebtMember 2021-09-30 0000915912 avb:NotesPayableMaturities2046Member us-gaap:UnsecuredDebtMember 2021-09-30 0000915912 avb:NotesPayableMaturities2047Member us-gaap:UnsecuredDebtMember 2021-09-30 0000915912 avb:NotesPayableMaturities2048Member us-gaap:UnsecuredDebtMember 2021-09-30 0000915912 us-gaap:CommonStockMember 2020-12-31 0000915912 us-gaap:AdditionalPaidInCapitalMember 2020-12-31 0000915912 us-gaap:RetainedEarningsMember 2020-12-31 0000915912 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2020-12-31 0000915912 us-gaap:ParentMember 2020-12-31 0000915912 us-gaap:NoncontrollingInterestMember 2020-12-31 0000915912 us-gaap:RetainedEarningsMember 2021-01-01 2021-03-31 0000915912 us-gaap:ParentMember 2021-01-01 2021-03-31 0000915912 2021-01-01 2021-03-31 0000915912 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2021-01-01 2021-03-31 0000915912 us-gaap:NoncontrollingInterestMember 2021-01-01 2021-03-31 0000915912 us-gaap:CommonStockMember 2021-01-01 2021-03-31 0000915912 us-gaap:AdditionalPaidInCapitalMember 2021-01-01 2021-03-31 0000915912 us-gaap:CommonStockMember 2021-03-31 0000915912 us-gaap:AdditionalPaidInCapitalMember 2021-03-31 0000915912 us-gaap:RetainedEarningsMember 2021-03-31 0000915912 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2021-03-31 0000915912 us-gaap:ParentMember 2021-03-31 0000915912 us-gaap:NoncontrollingInterestMember 2021-03-31 0000915912 2021-03-31 0000915912 us-gaap:RetainedEarningsMember 2021-04-01 2021-06-30 0000915912 us-gaap:ParentMember 2021-04-01 2021-06-30 0000915912 2021-04-01 2021-06-30 0000915912 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2021-04-01 2021-06-30 0000915912 us-gaap:NoncontrollingInterestMember 2021-04-01 2021-06-30 0000915912 us-gaap:AdditionalPaidInCapitalMember 2021-04-01 2021-06-30 0000915912 us-gaap:CommonStockMember 2021-06-30 0000915912 us-gaap:AdditionalPaidInCapitalMember 2021-06-30 0000915912 us-gaap:RetainedEarningsMember 2021-06-30 0000915912 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2021-06-30 0000915912 us-gaap:ParentMember 2021-06-30 0000915912 us-gaap:NoncontrollingInterestMember 2021-06-30 0000915912 2021-06-30 0000915912 us-gaap:RetainedEarningsMember 2021-07-01 2021-09-30 0000915912 us-gaap:ParentMember 2021-07-01 2021-09-30 0000915912 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2021-07-01 2021-09-30 0000915912 us-gaap:NoncontrollingInterestMember 2021-07-01 2021-09-30 0000915912 us-gaap:AdditionalPaidInCapitalMember 2021-07-01 2021-09-30 0000915912 us-gaap:AdditionalPaidInCapitalMember 2021-09-30 0000915912 us-gaap:RetainedEarningsMember 2021-09-30 0000915912 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2021-09-30 0000915912 us-gaap:ParentMember 2021-09-30 0000915912 us-gaap:NoncontrollingInterestMember 2021-09-30 0000915912 us-gaap:CommonStockMember 2019-12-31 0000915912 us-gaap:AdditionalPaidInCapitalMember 2019-12-31 0000915912 us-gaap:RetainedEarningsMember 2019-12-31 0000915912 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2019-12-31 0000915912 us-gaap:ParentMember 2019-12-31 0000915912 us-gaap:NoncontrollingInterestMember 2019-12-31 0000915912 us-gaap:RetainedEarningsMember 2020-01-01 2020-03-31 0000915912 us-gaap:ParentMember 2020-01-01 2020-03-31 0000915912 2020-01-01 2020-03-31 0000915912 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2020-01-01 2020-03-31 0000915912 us-gaap:NoncontrollingInterestMember 2020-01-01 2020-03-31 0000915912 us-gaap:CommonStockMember 2020-01-01 2020-03-31 0000915912 us-gaap:AdditionalPaidInCapitalMember 2020-01-01 2020-03-31 0000915912 us-gaap:CommonStockMember 2020-03-31 0000915912 us-gaap:AdditionalPaidInCapitalMember 2020-03-31 0000915912 us-gaap:RetainedEarningsMember 2020-03-31 0000915912 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2020-03-31 0000915912 us-gaap:ParentMember 2020-03-31 0000915912 us-gaap:NoncontrollingInterestMember 2020-03-31 0000915912 2020-03-31 0000915912 us-gaap:RetainedEarningsMember 2020-04-01 2020-06-30 0000915912 us-gaap:ParentMember 2020-04-01 2020-06-30 0000915912 2020-04-01 2020-06-30 0000915912 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2020-04-01 2020-06-30 0000915912 us-gaap:NoncontrollingInterestMember 2020-04-01 2020-06-30 0000915912 us-gaap:AdditionalPaidInCapitalMember 2020-04-01 2020-06-30 0000915912 us-gaap:CommonStockMember 2020-06-30 0000915912 us-gaap:AdditionalPaidInCapitalMember 2020-06-30 0000915912 us-gaap:RetainedEarningsMember 2020-06-30 0000915912 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2020-06-30 0000915912 us-gaap:ParentMember 2020-06-30 0000915912 us-gaap:NoncontrollingInterestMember 2020-06-30 0000915912 2020-06-30 0000915912 us-gaap:RetainedEarningsMember 2020-07-01 2020-09-30 0000915912 us-gaap:ParentMember 2020-07-01 2020-09-30 0000915912 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2020-07-01 2020-09-30 0000915912 us-gaap:NoncontrollingInterestMember 2020-07-01 2020-09-30 0000915912 us-gaap:AdditionalPaidInCapitalMember 2020-07-01 2020-09-30 0000915912 us-gaap:CommonStockMember 2020-07-01 2020-09-30 0000915912 us-gaap:AdditionalPaidInCapitalMember 2020-09-30 0000915912 us-gaap:RetainedEarningsMember 2020-09-30 0000915912 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2020-09-30 0000915912 us-gaap:ParentMember 2020-09-30 0000915912 us-gaap:NoncontrollingInterestMember 2020-09-30 0000915912 avb:ContinuousEquityProgramCEPVMember 2021-01-01 2021-09-30 0000915912 avb:ContinuousEquityProgramCEPVMember 2021-07-01 2021-09-30 0000915912 avb:Amended2005StockRepurchaseProgramMember 2020-07-31 0000915912 avb:A2020StockRepurchaseProgramMember 2020-07-31 0000915912 avb:ContinuousEquityProgramCEPVMember 2021-09-30 0000915912 avb:ContinuousEquityProgramCEPVMember srt:MaximumMember 2021-01-01 2021-09-30 avb:entity 0000915912 avb:UnconsolidatedRealEstateEntitiesMember 2021-09-30 0000915912 srt:MinimumMember avb:UnconsolidatedRealEstateEntitiesMember 2021-09-30 0000915912 avb:UnconsolidatedRealEstateEntitiesMember srt:MaximumMember 2021-09-30 0000915912 avb:ACJVMember 2021-01-01 2021-09-30 0000915912 avb:ACJVMember avb:AvalonNorthPointAndAvalonNorthPointLoftsMember 2021-01-01 2021-09-30 0000915912 avb:ACJVMember 2021-01-01 2021-09-30 0000915912 avb:AvalonNorthPointAndAvalonNorthPointLoftsMember us-gaap:SecuredDebtMember avb:NotesPayableMaturities2021Member 2021-01-01 2021-09-30 0000915912 us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvesteesMember 2021-09-30 0000915912 us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvesteesMember 2020-12-31 0000915912 avb:AVAArtsDistrictMember 2021-09-30 0000915912 us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvesteesMember 2021-07-01 2021-09-30 0000915912 us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvesteesMember 2020-07-01 2020-09-30 0000915912 us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvesteesMember 2021-01-01 2021-09-30 0000915912 us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvesteesMember 2020-01-01 2020-09-30 0000915912 avb:AvalonArundelCrossingEastMember 2021-01-01 2021-09-30 0000915912 avb:AvalonLakesideMember 2021-01-01 2021-09-30 0000915912 avb:AvalonLakesideMember 2021-09-30 0000915912 avb:HUBSouthEndMember 2021-01-01 2021-09-30 0000915912 avb:HUBSouthEndMember 2021-09-30 0000915912 avb:Three30FiveMember 2021-01-01 2021-09-30 0000915912 us-gaap:HurricaneMember avb:EastCoastMember 2021-01-01 2021-09-30 0000915912 us-gaap:HurricaneMember avb:EastCoastMember 2021-07-01 2021-09-30 0000915912 us-gaap:FireMember 2021-01-01 2021-09-30 0000915912 avb:TheParkLoggiaMember 2020-07-01 2020-09-30 0000915912 avb:TheParkLoggiaMember 2020-01-01 2020-09-30 0000915912 avb:TheParkLoggiaMember 2021-07-01 2021-09-30 0000915912 avb:TheParkLoggiaMember 2021-01-01 2021-09-30 0000915912 avb:LandParcelMember 2021-01-01 2021-09-30 0000915912 avb:LandParcelMember 2020-07-01 2020-09-30 0000915912 avb:LandParcelMember 2021-07-01 2021-09-30 0000915912 avb:LandParcelMember 2020-01-01 2020-09-30 0000915912 avb:EavesStamfordMember 2021-01-01 2021-03-31 0000915912 avb:AvalonNorwalkMember 2021-04-01 2021-06-30 0000915912 avb:AVACortezHillMember 2021-04-01 2021-06-30 0000915912 avb:AvalonRedmondPlaceMember 2021-04-01 2021-06-30 0000915912 avb:AvalonBronxvilleMember 2021-04-01 2021-06-30 0000915912 avb:AvalonGlenCoveAndAvalonGlenCoveNorthMember 2021-04-01 2021-06-30 0000915912 avb:PropertiesOnLandSubjectToLandLeasesMember 2021-09-30 avb:property 0000915912 avb:AssetsHeldunderOperatingLeasesMember 2021-09-30 0000915912 avb:AvalonHackensackAtRiversideMember 2021-07-01 2021-09-30 0000915912 avb:AssetsHeldunderFinanceLeasesMember 2021-09-30 0000915912 us-gaap:OperatingIncomeLossMember us-gaap:ProductConcentrationRiskMember avb:NonApartmentComponentsOfMixedUseCommunitiesAndOtherNonresidentialOperationsMember 2021-07-01 2021-09-30 0000915912 us-gaap:OperatingIncomeLossMember us-gaap:ProductConcentrationRiskMember avb:NonApartmentComponentsOfMixedUseCommunitiesAndOtherNonresidentialOperationsMember 2020-07-01 2020-09-30 0000915912 us-gaap:OperatingIncomeLossMember us-gaap:ProductConcentrationRiskMember avb:NonApartmentComponentsOfMixedUseCommunitiesAndOtherNonresidentialOperationsMember 2021-01-01 2021-09-30 0000915912 us-gaap:OperatingIncomeLossMember us-gaap:ProductConcentrationRiskMember avb:NonApartmentComponentsOfMixedUseCommunitiesAndOtherNonresidentialOperationsMember 2020-01-01 2020-09-30 0000915912 avb:NewEnglandMember us-gaap:OperatingSegmentsMember avb:EstablishedCommunitiesMember 2021-07-01 2021-09-30 0000915912 avb:NewEnglandMember us-gaap:OperatingSegmentsMember avb:EstablishedCommunitiesMember 2021-01-01 2021-09-30 0000915912 avb:NewEnglandMember us-gaap:OperatingSegmentsMember avb:EstablishedCommunitiesMember 2021-09-30 0000915912 us-gaap:OperatingSegmentsMember avb:EstablishedCommunitiesMember avb:MetroNYNJMember 2021-07-01 2021-09-30 0000915912 us-gaap:OperatingSegmentsMember avb:EstablishedCommunitiesMember avb:MetroNYNJMember 2021-01-01 2021-09-30 0000915912 us-gaap:OperatingSegmentsMember avb:EstablishedCommunitiesMember avb:MetroNYNJMember 2021-09-30 0000915912 avb:MidAtlanticMember us-gaap:OperatingSegmentsMember avb:EstablishedCommunitiesMember 2021-07-01 2021-09-30 0000915912 avb:MidAtlanticMember us-gaap:OperatingSegmentsMember avb:EstablishedCommunitiesMember 2021-01-01 2021-09-30 0000915912 avb:MidAtlanticMember us-gaap:OperatingSegmentsMember avb:EstablishedCommunitiesMember 2021-09-30 0000915912 avb:SoutheastFloridaMember us-gaap:OperatingSegmentsMember avb:EstablishedCommunitiesMember 2021-07-01 2021-09-30 0000915912 avb:SoutheastFloridaMember us-gaap:OperatingSegmentsMember avb:EstablishedCommunitiesMember 2021-01-01 2021-09-30 0000915912 avb:SoutheastFloridaMember us-gaap:OperatingSegmentsMember avb:EstablishedCommunitiesMember 2021-09-30 0000915912 us-gaap:OperatingSegmentsMember avb:EstablishedCommunitiesMember avb:DenverColoradoMember 2021-07-01 2021-09-30 0000915912 us-gaap:OperatingSegmentsMember avb:EstablishedCommunitiesMember avb:DenverColoradoMember 2021-01-01 2021-09-30 0000915912 us-gaap:OperatingSegmentsMember avb:EstablishedCommunitiesMember avb:DenverColoradoMember 2021-09-30 0000915912 avb:PacificNorthwestMember us-gaap:OperatingSegmentsMember avb:EstablishedCommunitiesMember 2021-07-01 2021-09-30 0000915912 avb:PacificNorthwestMember us-gaap:OperatingSegmentsMember avb:EstablishedCommunitiesMember 2021-01-01 2021-09-30 0000915912 avb:PacificNorthwestMember us-gaap:OperatingSegmentsMember avb:EstablishedCommunitiesMember 2021-09-30 0000915912 avb:NorthernCaliforniaMember us-gaap:OperatingSegmentsMember avb:EstablishedCommunitiesMember 2021-07-01 2021-09-30 0000915912 avb:NorthernCaliforniaMember us-gaap:OperatingSegmentsMember avb:EstablishedCommunitiesMember 2021-01-01 2021-09-30 0000915912 avb:NorthernCaliforniaMember us-gaap:OperatingSegmentsMember avb:EstablishedCommunitiesMember 2021-09-30 0000915912 us-gaap:OperatingSegmentsMember avb:EstablishedCommunitiesMember avb:SouthernCaliforniaMember 2021-07-01 2021-09-30 0000915912 us-gaap:OperatingSegmentsMember avb:EstablishedCommunitiesMember avb:SouthernCaliforniaMember 2021-01-01 2021-09-30 0000915912 us-gaap:OperatingSegmentsMember avb:EstablishedCommunitiesMember avb:SouthernCaliforniaMember 2021-09-30 0000915912 us-gaap:OperatingSegmentsMember avb:EstablishedCommunitiesMember 2021-07-01 2021-09-30 0000915912 us-gaap:OperatingSegmentsMember avb:EstablishedCommunitiesMember 2021-01-01 2021-09-30 0000915912 us-gaap:OperatingSegmentsMember avb:EstablishedCommunitiesMember 2021-09-30 0000915912 avb:OtherStabilizedCommunitiesMember us-gaap:OperatingSegmentsMember 2021-07-01 2021-09-30 0000915912 avb:OtherStabilizedCommunitiesMember us-gaap:OperatingSegmentsMember 2021-01-01 2021-09-30 0000915912 avb:OtherStabilizedCommunitiesMember us-gaap:OperatingSegmentsMember 2021-09-30 0000915912 us-gaap:OperatingSegmentsMember avb:DevelopmentRedevelopmentMember 2021-07-01 2021-09-30 0000915912 us-gaap:OperatingSegmentsMember avb:DevelopmentRedevelopmentMember 2021-01-01 2021-09-30 0000915912 us-gaap:OperatingSegmentsMember avb:DevelopmentRedevelopmentMember 2021-09-30 0000915912 us-gaap:MaterialReconcilingItemsMember 2021-09-30 0000915912 us-gaap:CorporateNonSegmentMember 2021-07-01 2021-09-30 0000915912 us-gaap:CorporateNonSegmentMember 2021-01-01 2021-09-30 0000915912 us-gaap:CorporateNonSegmentMember 2021-09-30 0000915912 avb:NewEnglandMember us-gaap:OperatingSegmentsMember avb:EstablishedCommunitiesMember 2020-07-01 2020-09-30 0000915912 avb:NewEnglandMember us-gaap:OperatingSegmentsMember avb:EstablishedCommunitiesMember 2020-01-01 2020-09-30 0000915912 avb:NewEnglandMember us-gaap:OperatingSegmentsMember avb:EstablishedCommunitiesMember 2020-09-30 0000915912 us-gaap:OperatingSegmentsMember avb:EstablishedCommunitiesMember avb:MetroNYNJMember 2020-07-01 2020-09-30 0000915912 us-gaap:OperatingSegmentsMember avb:EstablishedCommunitiesMember avb:MetroNYNJMember 2020-01-01 2020-09-30 0000915912 us-gaap:OperatingSegmentsMember avb:EstablishedCommunitiesMember avb:MetroNYNJMember 2020-09-30 0000915912 avb:MidAtlanticMember us-gaap:OperatingSegmentsMember avb:EstablishedCommunitiesMember 2020-07-01 2020-09-30 0000915912 avb:MidAtlanticMember us-gaap:OperatingSegmentsMember avb:EstablishedCommunitiesMember 2020-01-01 2020-09-30 0000915912 avb:MidAtlanticMember us-gaap:OperatingSegmentsMember avb:EstablishedCommunitiesMember 2020-09-30 0000915912 avb:SoutheastFloridaMember us-gaap:OperatingSegmentsMember avb:EstablishedCommunitiesMember 2020-07-01 2020-09-30 0000915912 avb:SoutheastFloridaMember us-gaap:OperatingSegmentsMember avb:EstablishedCommunitiesMember 2020-01-01 2020-09-30 0000915912 avb:SoutheastFloridaMember us-gaap:OperatingSegmentsMember avb:EstablishedCommunitiesMember 2020-09-30 0000915912 us-gaap:OperatingSegmentsMember avb:EstablishedCommunitiesMember avb:DenverColoradoMember 2020-07-01 2020-09-30 0000915912 us-gaap:OperatingSegmentsMember avb:EstablishedCommunitiesMember avb:DenverColoradoMember 2020-01-01 2020-09-30 0000915912 us-gaap:OperatingSegmentsMember avb:EstablishedCommunitiesMember avb:DenverColoradoMember 2020-09-30 0000915912 avb:PacificNorthwestMember us-gaap:OperatingSegmentsMember avb:EstablishedCommunitiesMember 2020-07-01 2020-09-30 0000915912 avb:PacificNorthwestMember us-gaap:OperatingSegmentsMember avb:EstablishedCommunitiesMember 2020-01-01 2020-09-30 0000915912 avb:PacificNorthwestMember us-gaap:OperatingSegmentsMember avb:EstablishedCommunitiesMember 2020-09-30 0000915912 avb:NorthernCaliforniaMember us-gaap:OperatingSegmentsMember avb:EstablishedCommunitiesMember 2020-07-01 2020-09-30 0000915912 avb:NorthernCaliforniaMember us-gaap:OperatingSegmentsMember avb:EstablishedCommunitiesMember 2020-01-01 2020-09-30 0000915912 avb:NorthernCaliforniaMember us-gaap:OperatingSegmentsMember avb:EstablishedCommunitiesMember 2020-09-30 0000915912 us-gaap:OperatingSegmentsMember avb:EstablishedCommunitiesMember avb:SouthernCaliforniaMember 2020-07-01 2020-09-30 0000915912 us-gaap:OperatingSegmentsMember avb:EstablishedCommunitiesMember avb:SouthernCaliforniaMember 2020-01-01 2020-09-30 0000915912 us-gaap:OperatingSegmentsMember avb:EstablishedCommunitiesMember avb:SouthernCaliforniaMember 2020-09-30 0000915912 us-gaap:OperatingSegmentsMember avb:EstablishedCommunitiesMember 2020-07-01 2020-09-30 0000915912 us-gaap:OperatingSegmentsMember avb:EstablishedCommunitiesMember 2020-01-01 2020-09-30 0000915912 us-gaap:OperatingSegmentsMember avb:EstablishedCommunitiesMember 2020-09-30 0000915912 avb:OtherStabilizedCommunitiesMember us-gaap:OperatingSegmentsMember 2020-07-01 2020-09-30 0000915912 avb:OtherStabilizedCommunitiesMember us-gaap:OperatingSegmentsMember 2020-01-01 2020-09-30 0000915912 avb:OtherStabilizedCommunitiesMember us-gaap:OperatingSegmentsMember 2020-09-30 0000915912 us-gaap:OperatingSegmentsMember avb:DevelopmentRedevelopmentMember 2020-07-01 2020-09-30 0000915912 us-gaap:OperatingSegmentsMember avb:DevelopmentRedevelopmentMember 2020-01-01 2020-09-30 0000915912 us-gaap:OperatingSegmentsMember avb:DevelopmentRedevelopmentMember 2020-09-30 0000915912 us-gaap:MaterialReconcilingItemsMember 2020-09-30 0000915912 us-gaap:CorporateNonSegmentMember 2020-07-01 2020-09-30 0000915912 us-gaap:CorporateNonSegmentMember 2020-01-01 2020-09-30 0000915912 us-gaap:CorporateNonSegmentMember 2020-09-30 0000915912 us-gaap:OperatingSegmentsMember avb:DisposalsMember 2020-09-30 0000915912 avb:StockOptionAndIncentivePlan2009Member avb:EmployeeAndDirectorsStockOptionsMember 2020-12-31 0000915912 avb:StockOptionAndIncentivePlan2009Member avb:EmployeeAndDirectorsStockOptionsMember 2021-01-01 2021-09-30 0000915912 avb:StockOptionAndIncentivePlan2009Member avb:EmployeeAndDirectorsStockOptionsMember 2021-09-30 0000915912 avb:PerformanceOptionsMember 2021-01-01 2021-09-30 0000915912 avb:EmployeeAndDirectorsStockOptionsMember 2021-01-01 2021-09-30 0000915912 us-gaap:PerformanceSharesMember 2020-12-31 0000915912 us-gaap:PerformanceSharesMember 2021-09-30 0000915912 us-gaap:RestrictedStockMember 2020-12-31 0000915912 avb:RestrictedStockConvertedFromPerformanceSharesMember 2020-12-31 0000915912 avb:RestrictedStockConvertedFromPerformanceSharesMember 2021-01-01 2021-09-30 0000915912 us-gaap:RestrictedStockMember 2021-09-30 0000915912 avb:RestrictedStockConvertedFromPerformanceSharesMember 2021-09-30 0000915912 avb:RestrictedStockAndRestrictedStockUnitsMember 2021-09-30 0000915912 avb:RestrictedStockAndRestrictedStockUnitsMember 2021-01-01 2021-09-30 0000915912 avb:UnconsolidatedRealEstateEntitiesMember 2021-09-30 0000915912 avb:UnconsolidatedRealEstateEntitiesMember 2020-12-31 0000915912 us-gaap:DeferredCompensationShareBasedPaymentsMember avb:NonEmployeeDirectorMember 2021-07-01 2021-09-30 0000915912 us-gaap:DeferredCompensationShareBasedPaymentsMember avb:NonEmployeeDirectorMember 2020-07-01 2020-09-30 0000915912 us-gaap:DeferredCompensationShareBasedPaymentsMember avb:NonEmployeeDirectorMember 2021-01-01 2021-09-30 0000915912 us-gaap:DeferredCompensationShareBasedPaymentsMember avb:NonEmployeeDirectorMember 2020-01-01 2020-09-30 0000915912 us-gaap:DeferredCompensationShareBasedPaymentsMember avb:NonEmployeeDirectorMember 2021-09-30 0000915912 us-gaap:DeferredCompensationShareBasedPaymentsMember avb:NonEmployeeDirectorMember 2020-12-31 0000915912 us-gaap:InterestRateCapMember us-gaap:NondesignatedMember 2021-09-30 0000915912 us-gaap:InterestRateSwapMember us-gaap:CashFlowHedgingMember 2021-09-30 0000915912 2020-01-01 2020-12-31 0000915912 2021-09-01 2021-09-30 0000915912 us-gaap:InterestRateSwapMember us-gaap:CashFlowHedgingMember 2021-07-01 2021-09-30 avb:derivative 0000915912 us-gaap:NondesignatedMember 2021-09-30 0000915912 us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember 2021-01-01 2021-09-30 0000915912 us-gaap:InterestRateCapMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:NondesignatedMember us-gaap:EstimateOfFairValueFairValueDisclosureMember 2021-09-30 0000915912 us-gaap:InterestRateCapMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:NondesignatedMember us-gaap:FairValueInputsLevel2Member 2021-09-30 0000915912 us-gaap:CashFlowHedgingMember us-gaap:InterestRateSwapMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:EstimateOfFairValueFairValueDisclosureMember 2021-09-30 0000915912 us-gaap:CashFlowHedgingMember us-gaap:InterestRateSwapMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel2Member 2021-09-30 0000915912 us-gaap:FairValueMeasurementsRecurringMember us-gaap:EstimateOfFairValueFairValueDisclosureMember 2021-09-30 0000915912 us-gaap:FairValueInputsLevel1Member us-gaap:FairValueMeasurementsRecurringMember 2021-09-30 0000915912 us-gaap:FairValueMeasurementsRecurringMember us-gaap:UnsecuredDebtMember us-gaap:EstimateOfFairValueFairValueDisclosureMember 2021-09-30 0000915912 us-gaap:FairValueInputsLevel1Member us-gaap:FairValueMeasurementsRecurringMember us-gaap:UnsecuredDebtMember 2021-09-30 0000915912 avb:SecuredDebtandVariableRateUnsecuredIndebtednessMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:EstimateOfFairValueFairValueDisclosureMember 2021-09-30 0000915912 avb:SecuredDebtandVariableRateUnsecuredIndebtednessMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel2Member 2021-09-30 0000915912 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel2Member 2021-09-30 0000915912 us-gaap:FairValueInputsLevel3Member us-gaap:FairValueMeasurementsRecurringMember 2021-09-30 0000915912 us-gaap:InterestRateCapMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:NondesignatedMember us-gaap:EstimateOfFairValueFairValueDisclosureMember 2020-12-31 0000915912 us-gaap:InterestRateCapMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:NondesignatedMember us-gaap:FairValueInputsLevel2Member 2020-12-31 0000915912 us-gaap:CashFlowHedgingMember us-gaap:InterestRateSwapMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:EstimateOfFairValueFairValueDisclosureMember 2020-12-31 0000915912 us-gaap:CashFlowHedgingMember us-gaap:InterestRateSwapMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel2Member 2020-12-31 0000915912 us-gaap:FairValueMeasurementsRecurringMember us-gaap:EstimateOfFairValueFairValueDisclosureMember 2020-12-31 0000915912 us-gaap:FairValueInputsLevel1Member us-gaap:FairValueMeasurementsRecurringMember 2020-12-31 0000915912 us-gaap:FairValueMeasurementsRecurringMember us-gaap:UnsecuredDebtMember us-gaap:EstimateOfFairValueFairValueDisclosureMember 2020-12-31 0000915912 us-gaap:FairValueInputsLevel1Member us-gaap:FairValueMeasurementsRecurringMember us-gaap:UnsecuredDebtMember 2020-12-31 0000915912 avb:SecuredDebtandVariableRateUnsecuredIndebtednessMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:EstimateOfFairValueFairValueDisclosureMember 2020-12-31 0000915912 avb:SecuredDebtandVariableRateUnsecuredIndebtednessMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel2Member 2020-12-31 0000915912 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel2Member 2020-12-31 0000915912 us-gaap:FairValueInputsLevel3Member us-gaap:FairValueMeasurementsRecurringMember 2020-12-31 0000915912 avb:CurvMember us-gaap:SubsequentEventMember 2021-10-01 2021-10-31 0000915912 avb:CurvMember us-gaap:SubsequentEventMember 2021-10-31 0000915912 us-gaap:SubsequentEventMember avb:ContinuousEquityProgramCEPVMember 2021-10-01 2021-10-31 0000915912 us-gaap:SubsequentEventMember avb:NotesPayableMaturities2036FixedRateMember us-gaap:SecuredDebtMember 2021-11-01 2021-11-04 0000915912 us-gaap:SubsequentEventMember avb:NotesPayableMaturities2036FixedRateMember us-gaap:SecuredDebtMember 2021-11-04 0000915912 us-gaap:SubsequentEventMember us-gaap:LineOfCreditMember 2021-11-04
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 10-Q
QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d)
OF THE SECURITIES EXCHANGE ACT OF 1934
For the quarterly period ended September 30, 2021
Commission file number 1-12672
AVALONBAY COMMUNITIES, INC.
(Exact name of registrant as specified in its charter)

|  | Maryland |  |  | 77-0404318 |
| (State or other jurisdiction of |  | (I.R.S. Employer |
| incorporation or organization) |  | Identification No.) |

4040 Wilson Blvd., Suite 1000
Arlington, Virginia 22203
(Address of principal executive offices, including zip code)
(703) 329-6300
(Registrant's telephone number, including area code)
(Former name, if changed since last report)
Securities registered pursuant to Section 12(b) of the Act:

Title of each class | Trading Symbol | Name of each exchange on which registered
Common Stock, par value $0.01 per share |  | AVB |  | New York Stock Exchange

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding twelve (12) months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past ninety (90) days.
Yes ☒ No ☐
Indicate by check mark whether the registrant has submitted electronically, every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (Section 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).
Yes ☒ No ☐
Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, smaller reporting company, or an emerging growth company. See the definitions of "large accelerated filer," "accelerated filer," "smaller reporting company," and "emerging growth company" in Rule 12b-2 of the Exchange Act.

| Large accelerated filer | ☒ |  | Accelerated filer | ☐ |
| Non-accelerated filer | ☐ |  | Smaller reporting company | ☐ |
| Emerging growth company | ☐ |  |  |  |

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐
Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act).
Yes ☐ No ☒
Indicate the number of shares outstanding of each of the issuer's classes of common stock as of the latest practicable date:
139,740,922 shares of common stock, par value $0.01 per share, were outstanding as of October 29, 2021.

Table of Contents
AVALONBAY COMMUNITIES, INC.
FORM 10-Q
INDEX

| PAGE
PART I - FINANCIAL INFORMATION |
ITEM 1. | CONDENSED CONSOLIDATED FINANCIAL STATEMENTS |
| CONDENSED CONSOLIDATED BALANCE SHEETS AS OF SEPTEMBER 30, 2021 (UNAUDITED) AND DECEMBER 31, 2020 | 1
| CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) FOR THE THREE AND NINE MONTHS ENDED SEPTEMBER 30, 2021 AND 2020 | 2
| CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) FOR THE NINE MONTHS ENDED SEPTEMBER 30, 2021 AND 2020 | 3
| NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED) | 5
ITEM 2. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS | 26
ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK | 52
ITEM 4. CONTROLS AND PROCEDURES | 52
PART II - OTHER INFORMATION |
ITEM 1. LEGAL PROCEEDINGS | 52
ITEM 1A. RISK FACTORS | 52
ITEM 2. UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS | 52
ITEM 3. DEFAULTS UPON SENIOR SECURITIES | 53
ITEM 4. MINE SAFETY DISCLOSURES | 53
ITEM 5. OTHER INFORMATION | 53
ITEM 6. EXHIBITS | 54
SIGNATURES | 55

Table of Contents
AVALONBAY COMMUNITIES, INC.
CONDENSED CONSOLIDATED BALANCE SHEETS
(Dollars in thousands, except per share data)

| 9/30/2021 |  | 12/31/2020
| (unaudited) |  |
ASSETS |  |  |
Real estate: |  |  |
Land and improvements | $ | 4,510,361 |  |  | $ | 4,394,298 |
Buildings and improvements | 17,839,750 |  |  | 17,231,275 |
Furniture, fixtures and equipment | 1,000,756 |  |  | 924,583 |
| 23,350,867 |  |  | 22,550,156 |
Less accumulated depreciation | (6,056,727) |  |  | (5,700,179) |
Net operating real estate | 17,294,140 |  |  | 16,849,977 |
Construction in progress, including land | 787,561 |  |  | 989,765 |
Land held for development | 66,769 |  |  | 110,142 |
For-sale condominium inventory | 171,113 |  |  | 267,219 |
Real estate assets held for sale, net | 46,438 |  |  | 16,678 |
Total real estate, net | 18,366,021 |  |  | 18,233,781 |
Cash and cash equivalents | 322,294 |  |  | 216,976 |
Cash in escrow | 113,556 |  |  | 96,556 |
Resident security deposits | 33,440 |  |  | 30,811 |
Investments in unconsolidated real estate entities | 199,541 |  |  | 202,612 |
Deferred development costs | 55,451 |  |  | 55,427 |
Prepaid expenses and other assets | 236,348 |  |  | 207,715 |
Right of use lease assets | 152,316 |  |  | 155,266 |
Total assets | $ | 19,478,967 |  |  | $ | 19,199,144 |
LIABILITIES AND EQUITY |  |  |
Unsecured notes, net | $ | 6,951,637 |  |  | $ | 6,702,005 |
Variable rate unsecured credit facility | — |  |  | — |
Mortgage notes payable, net | 827,667 |  |  | 862,332 |
Dividends payable | 224,760 |  |  | 224,897 |
Payables for construction | 57,970 |  |  | 93,609 |
Accrued expenses and other liabilities | 328,082 |  |  | 274,699 |
Lease liabilities | 174,922 |  |  | 181,479 |
Accrued interest payable | 62,176 |  |  | 49,033 |
Resident security deposits | 59,189 |  |  | 55,928 |
Liabilities related to real estate assets held for sale | 1,198 |  |  | 311 |
Total liabilities | 8,687,601 |  |  | 8,444,293 |
Commitments and contingencies |  |  |
Redeemable noncontrolling interests | 3,136 |  |  | 2,677 |
Equity: |  |  |
Preferred stock, $0.01 par value; $25 liquidation preference; 50,000,000 shares authorized at September 30, 2021 and December 31, 2020; zero shares issued and outstanding at September 30, 2021 and December 31, 2020 | — |  |  | — |
Common stock, $0.01 par value; 280,000,000 shares authorized at September 30, 2021 and December 31, 2020; 139,638,925 and 139,526,671 shares issued and outstanding at September 30, 2021 and December 31, 2020, respectively | 1,396 |  |  | 1,395 |
Additional paid-in capital | 10,684,639 |  |  | 10,664,416 |
Accumulated earnings less dividends | 128,549 |  |  | 126,022 |
Accumulated other comprehensive loss | (26,924) |  |  | (40,250) |
Total stockholders' equity | 10,787,660 |  |  | 10,751,583 |
Noncontrolling interests | 570 |  |  | 591 |
Total equity | 10,788,230 |  |  | 10,752,174 |
Total liabilities and equity | $ | 19,478,967 |  |  | $ | 19,199,144 |

See accompanying notes to Condensed Consolidated Financial Statements.
1

Table of Contents
AVALONBAY COMMUNITIES, INC.
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
(unaudited)
(Dollars in thousands, except per share data)

| For the three months ended |  | For the nine months ended
| 9/30/2021 |  | 9/30/2020 |  | 9/30/2021 |  | 9/30/2020
Revenue: |  |  |  |  |  |  |
Rental and other income | $ | 580,079 |  |  | $ | 566,387 |  |  | $ | 1,691,273 |  |  | $ | 1,742,509 |
Management, development and other fees | 695 |  |  | 1,017 |  |  | 2,380 |  |  | 2,950 |
Total revenue | 580,774 |  |  | 567,404 |  |  | 1,693,653 |  |  | 1,745,459 |
Expenses: |  |  |  |  |  |  |
Operating expenses, excluding property taxes | 148,704 |  |  | 143,909 |  |  | 430,377 |  |  | 406,991 |
Property taxes | 72,332 |  |  | 68,934 |  |  | 212,518 |  |  | 202,973 |
Expensed transaction, development and other pursuit costs, net of recoveries | 417 |  |  | 567 |  |  | 1,900 |  |  | 4,289 |
Interest expense, net | 55,987 |  |  | 53,249 |  |  | 164,704 |  |  | 162,562 |
Loss (gain) on extinguishment of debt, net | 17,890 |  |  | (105) |  |  | 17,768 |  |  | 9,333 |
Depreciation expense | 193,791 |  |  | 175,348 |  |  | 561,560 |  |  | 529,508 |
General and administrative expense | 17,313 |  |  | 13,985 |  |  | 53,130 |  |  | 46,878 |
Casualty and impairment loss | 1,940 |  |  | — |  |  | 3,117 |  |  | — |
Total expenses | 508,374 |  |  | 455,887 |  |  | 1,445,074 |  |  | 1,362,534 |
Income from investments in unconsolidated entities | 6,867 |  |  | 5,083 |  |  | 32,959 |  |  | 6,770 |
Gain on sale of communities | 58 |  |  | 31,607 |  |  | 388,354 |  |  | 91,338 |
Gain on other real estate transactions, net | 1,543 |  |  | 129 |  |  | 2,002 |  |  | 328 |
Net for-sale condominium activity | 158 |  |  | (646) |  |  | (1,402) |  |  | 4,162 |
Income before income taxes | 81,026 |  |  | 147,690 |  |  | 670,492 |  |  | 485,523 |
Income tax (expense) benefit | (2,179) |  |  | 27 |  |  | (1,434) |  |  | 1,069 |
Net income | 78,847 |  |  | 147,717 |  |  | 669,058 |  |  | 486,592 |
Net loss (income) attributable to noncontrolling interests | 67 |  |  | (14) |  |  | 32 |  |  | (90) |
Net income attributable to common stockholders | $ | 78,914 |  |  | $ | 147,703 |  |  | $ | 669,090 |  |  | $ | 486,502 |
Other comprehensive income (loss): |  |  |  |  |  |  |
Gain (loss) on cash flow hedges | 2,010 |  |  | 1,333 |  |  | 1,188 |  |  | (17,731) |
Cash flow hedge losses reclassified to earnings | 7,405 |  |  | 2,367 |  |  | 12,138 |  |  | 6,617 |
Comprehensive income | $ | 88,329 |  |  | $ | 151,403 |  |  | $ | 682,416 |  |  | $ | 475,388 |
Earnings per common share - basic: |  |  |  |  |  |  |
Net income attributable to common stockholders | $ | 0.57 |  |  | $ | 1.05 |  |  | $ | 4.79 |  |  | $ | 3.46 |
Earnings per common share - diluted: |  |  |  |  |  |  |
Net income attributable to common stockholders | $ | 0.56 |  |  | $ | 1.05 |  |  | $ | 4.79 |  |  | $ | 3.46 |

See accompanying notes to Condensed Consolidated Financial Statements.
2

Table of Contents
AVALONBAY COMMUNITIES, INC.
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
(unaudited)
(Dollars in thousands)

| For the nine months ended
| 9/30/2021 |  | 9/30/2020
Cash flows from operating activities: |  |  |
Net income | $ | 669,058 |  |  | $ | 486,592 |
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |
Depreciation expense | 561,560 |  |  | 529,508 |
Amortization of deferred financing costs | 5,519 |  |  | 5,617 |
Amortization of debt discount | 1,998 |  |  | 1,321 |
Loss on extinguishment of debt, net | 17,768 |  |  | 9,333 |
Amortization of stock-based compensation | 20,660 |  |  | 17,753 |
Equity in loss of, and return on, unconsolidated real estate entities and noncontrolling interests, net of eliminations | 4,290 |  |  | 5,204 |
Real estate casualty loss | 2,802 |  |  | — |
Abandonment of development pursuits | 685 |  |  | 2,095 |
Unrealized gain on terminated cash flow hedges | (2,654) |  |  | — |
Cash flow hedge losses reclassified to earnings | 6,874 |  |  | 6,617 |
Gain on sale of real estate assets | (413,661) |  |  | (96,823) |
Gain on for-sale condominiums | (2,051) |  |  | (8,174) |
Increase in resident security deposits, prepaid expenses and other assets | (20,555) |  |  | (36,332) |
Increase in accrued expenses, other liabilities and accrued interest payable | 59,449 |  |  | 39,363 |
Net cash provided by operating activities | 911,742 |  |  | 962,074 |
Cash flows from investing activities: |  |  |
Development/redevelopment of real estate assets including land acquisitions and deferred development costs | (476,307) |  |  | (562,334) |
Acquisition of real estate assets, including partnership interest | (392,746) |  |  | — |
Capital expenditures - existing real estate assets | (105,621) |  |  | (76,860) |
Capital expenditures - non-real estate assets | (4,689) |  |  | (24,720) |
Decrease in payables for construction | (35,639) |  |  | (4,095) |
Proceeds from sale of real estate, net of selling costs | 576,973 |  |  | 186,090 |
Proceeds from the sale of for-sale condominiums, net of selling costs | 98,752 |  |  | 170,604 |
Mortgage note receivable lending | (118) |  |  | (260) |
Mortgage note receivable payments | 1,556 |  |  | 3,419 |
Distributions from unconsolidated real estate entities | 62,157 |  |  | 9,877 |
Investments in unconsolidated real estate entities | (40,071) |  |  | (23,044) |
Net cash used in investing activities | (315,753) |  |  | (321,323) |
Cash flows from financing activities: |  |  |
Issuance of common stock, net | 7,011 |  |  | 1,599 |
Repurchase of common stock, net | — |  |  | (137,458) |
Dividends paid | (666,420) |  |  | (661,000) |
Issuance of mortgage notes payable | — |  |  | 51,000 |
Repayments of mortgage notes payable, including prepayment penalties | (35,688) |  |  | (125,427) |
Issuance of unsecured notes | 699,167 |  |  | 1,296,581 |
Repayment of unsecured notes, including prepayment penalties | (462,147) |  |  | (958,681) |
Payment of deferred financing costs | (5,281) |  |  | (11,278) |
Receipt (payment) for termination of forward interest rate swaps | 4,751 |  |  | (25,135) |
Payment to noncontrolling interest | (45) |  |  | (59) |
Payments related to tax withholding for share-based compensation | (13,409) |  |  | (14,752) |
Distributions to DownREIT partnership unitholders | (36) |  |  | (36) |
Distributions to joint venture and profit-sharing partners | (234) |  |  | (319) |
Preferred interest obligation redemption and dividends | (1,340) |  |  | (1,000) |
Net cash used in financing activities | (473,671) |  |  | (585,965) |
Net increase in cash, cash equivalents and cash in escrow | 122,318 |  |  | 54,786 |
Cash, cash equivalents and cash in escrow, beginning of period | 313,532 |  |  | 127,614 |
Cash, cash equivalents and cash in escrow, end of period | $ | 435,850 |  |  | $ | 182,400 |
Cash paid during the period for interest, net of amount capitalized | $ | 127,575 |  |  | $ | 133,913 |

3

Table of Contents
See accompanying notes to Condensed Consolidated Financial Statements.
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (continued)
The following table provides a reconciliation of cash, cash equivalents and cash in escrow reported in the Condensed Consolidated Statements of Cash Flows (dollars in thousands):

|  | For the nine months ended
|  | 9/30/2021 |  | 9/30/2020
Cash and cash equivalents |  | $ | 322,294 |  |  | $ | 87,530 |
Cash in escrow |  | 113,556 |  |  | 94,870 |
Cash, cash equivalents and cash in escrow reported in the Condensed Consolidated Statements of Cash Flows |  | $ | 435,850 |  |  | $ | 182,400 |

Supplemental disclosures of non-cash investing and financing activities:
During the nine months ended September 30, 2021:
•As described in Note 4, "Equity," the Company issued 153,379 shares of common stock as part of the Company's stock-based compensation plans, of which 56,545 shares related to the conversion of performance awards to shares of common stock, and the remaining 96,834 shares valued at $17,187,000 were issued in connection with new stock grants; 2,223 shares valued at $423,000 were issued through the Company's dividend reinvestment plan; 75,542 shares valued at $13,409,000 were withheld to satisfy employees' tax withholding and other liabilities; and 3,077 restricted shares with an aggregate value of $595,000 previously issued in connection with employee compensation were canceled upon forfeiture.
•Common stock dividends declared but not paid totaled $223,380,000.
•The Company recorded an increase of $789,000 in redeemable noncontrolling interest with a corresponding decrease to accumulated earnings less dividends to adjust the redemption value associated with the put options held by joint venture partners and DownREIT partnership units.
•The Company recorded an increase to prepaid expenses and other assets of $3,399,000 and a corresponding adjustment to accumulated other comprehensive loss, and reclassified $6,874,000 and $5,264,000 of cash flow hedge losses from other comprehensive income (loss) to interest expense, net, and loss (gain) on extinguishment of debt, net, respectively, to record the impact of the Company's derivative and hedge accounting activity.
During the nine months ended September 30, 2020:
•The Company issued 165,426 shares of common stock as part of the Company's stock-based compensation plans, of which 96,317 shares related to the conversion of performance awards to restricted shares of common stock, and the remaining 69,109 shares valued at $15,285,000 were issued in connection with new stock grants; 1,967 shares valued at $339,000 were issued through the Company's dividend reinvestment plan; 73,103 shares valued at $14,752,000 were withheld to satisfy employees' tax withholding and other liabilities; and 7,421 restricted shares with an aggregate value of $1,187,000 previously issued in connection with employee compensation were canceled upon forfeiture.
•Common stock dividends declared but not paid totaled $223,391,000.
•The Company recorded a decrease of $387,000 in redeemable noncontrolling interest with a corresponding increase to accumulated earnings less dividends to adjust the redemption value associated with the put options held by joint venture partners and DownREIT partnership units.
•The Company recorded an increase in prepaid expenses and other assets of $1,413,000 and a corresponding adjustment to accumulated other comprehensive loss, and reclassified $6,617,000 of cash flow hedge losses from other comprehensive income (loss) to interest expense, net, to record the impact of the Company's derivative and hedge accounting activity.
•The Company recorded $46,875,000 of lease liabilities and offsetting right of use lease assets related to the execution of two new office leases.
4

Table of Contents
AVALONBAY COMMUNITIES, INC.
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
(unaudited)
1. Organization, Basis of Presentation and Significant Accounting Policies
Organization and Basis of Presentation
AvalonBay Communities, Inc. (the "Company," which term, unless the context otherwise requires, refers to AvalonBay Communities, Inc. together with its subsidiaries) is a Maryland corporation that has elected to be treated as a real estate investment trust ("REIT") for federal income tax purposes under the Internal Revenue Code of 1986, as amended (the "Code"). The Company focuses on the development, redevelopment, acquisition, ownership and operation of multifamily communities in New England, the New York/New Jersey metro area, the Mid-Atlantic, the Pacific Northwest, and Northern and Southern California, as well as in the Company's expansion markets of Raleigh-Durham and Charlotte, North Carolina, Southeast Florida, Dallas and Austin, Texas, and Denver, Colorado.
At September 30, 2021, the Company owned or held a direct or indirect ownership interest in 276 operating apartment communities containing 81,968 apartment homes in 13 states and the District of Columbia. In addition, the Company owned or held a direct or indirect ownership interest in 17 communities under development that are expected to contain an aggregate of 5,448 apartment homes when completed, as well as The Park Loggia, which contains 172 for-sale residential condominiums, of which 113 have been sold as of September 30, 2021, and 66,000 square feet of commercial space, of which 87% has been leased as of September 30, 2021. The Company also owned or held a direct or indirect ownership interest in land or rights to land on which the Company expects to develop an additional 22 communities that, if developed as expected, will contain an estimated 7,376 apartment homes.
The interim unaudited financial statements have been prepared in accordance with U.S. generally accepted accounting principles ("GAAP") for interim financial information and in conjunction with the rules and regulations of the Securities and Exchange Commission ("SEC"). Certain information and footnote disclosures normally included in financial statements required by GAAP have been condensed or omitted pursuant to such rules and regulations. These unaudited financial statements should be read in conjunction with the financial statements and notes included in the Company's 2020 Annual Report on Form 10-K. The results of operations for the three and nine months ended September 30, 2021 are not necessarily indicative of the operating results for the full year. Management believes the disclosures are adequate to ensure the information presented is not misleading. In the opinion of management, all adjustments and eliminations, consisting only of normal, recurring adjustments necessary for a fair presentation of the financial statements for the interim periods, have been included.
Capitalized terms used without definition have meanings provided elsewhere in this Form 10-Q.
Earnings per Common Share
Basic earnings per share is computed by dividing net income attributable to common stockholders by the weighted average number of shares outstanding during the period. All outstanding unvested restricted share awards contain rights to non-forfeitable dividends and participate in undistributed earnings with common shareholders and, accordingly, are considered participating securities that are included in the two-class method of computing basic earnings per share ("EPS"). Both the unvested restricted shares and other potentially dilutive common shares, and the related impact to earnings, are considered when calculating earnings per share on a diluted basis. The Company's earnings per common share are determined as follows (dollars in thousands, except per share data):
5

Table of Contents

| For the three months ended |  | For the nine months ended
| 9/30/2021 |  | 9/30/2020 |  | 9/30/2021 |  | 9/30/2020
Basic and diluted shares outstanding |  |  |  |  |  |  |
Weighted average common shares - basic | 139,386,413 |  |  | 140,271,574 |  |  | 139,338,800 |  |  | 140,366,438 |
Weighted average DownREIT units outstanding | 7,500 |  |  | 7,500 |  |  | 7,500 |  |  | 7,500 |
Effect of dilutive securities | 343,812 |  |  | 324,648 |  |  | 298,769 |  |  | 328,865 |
Weighted average common shares - diluted | 139,737,725 |  |  | 140,603,722 |  |  | 139,645,069 |  |  | 140,702,803 |
Calculation of Earnings per Share - basic |  |  |  |  |  |  |
Net income attributable to common stockholders | $ | 78,914 |  |  | $ | 147,703 |  |  | $ | 669,090 |  |  | $ | 486,502 |
Net income allocated to unvested restricted shares | (160) |  |  | (342) |  |  | (1,443) |  |  | (1,158) |
Net income attributable to common stockholders, adjusted | $ | 78,754 |  |  | $ | 147,361 |  |  | $ | 667,647 |  |  | $ | 485,344 |
Weighted average common shares - basic | 139,386,413 |  |  | 140,271,574 |  |  | 139,338,800 |  |  | 140,366,438 |
Earnings per common share - basic | $ | 0.57 |  |  | $ | 1.05 |  |  | $ | 4.79 |  |  | $ | 3.46 |
Calculation of Earnings per Share - diluted |  |  |  |  |  |  |
Net income attributable to common stockholders | $ | 78,914 |  |  | $ | 147,703 |  |  | $ | 669,090 |  |  | $ | 486,502 |
Add: noncontrolling interests of DownREIT unitholders in consolidated partnerships | 12 |  |  | 12 |  |  | 36 |  |  | 36 |
Adjusted net income attributable to common stockholders | $ | 78,926 |  |  | $ | 147,715 |  |  | $ | 669,126 |  |  | $ | 486,538 |
Weighted average common shares - diluted | 139,737,725 |  |  | 140,603,722 |  |  | 139,645,069 |  |  | 140,702,803 |
Earnings per common share - diluted | $ | 0.56 |  |  | $ | 1.05 |  |  | $ | 4.79 |  |  | $ | 3.46 |

All options to purchase shares of common stock outstanding as of September 30, 2021 and 2020 are included in the computation of diluted earnings per share.
Derivative Instruments and Hedging Activities
The Company enters into interest rate swap and interest rate cap agreements (collectively, "Hedging Derivatives") for interest rate risk management purposes and in conjunction with certain variable rate secured debt to satisfy lender requirements. The Company does not enter into Hedging Derivative transactions for trading or other speculative purposes. The Company assesses the effectiveness of qualifying cash flow and fair value hedges, both at inception and on an on-going basis. Hedge ineffectiveness is reported as a component of interest expense, net. The fair values of Hedging Derivatives that are in an asset position are recorded in prepaid expenses and other assets. The fair value of Hedging Derivatives that are in a liability position are included in accrued expenses and other liabilities. The Company does not present or disclose the fair value of Hedging Derivatives on a net basis. Fair value changes for derivatives that are not in qualifying hedge relationships are reported as a component of interest expense, net. For the Hedging Derivative positions that the Company has determined qualify as effective cash flow hedges, the Company has recorded the cumulative changes in the fair value of Hedging Derivatives in accumulated other comprehensive loss. Amounts recorded in accumulated other comprehensive loss will be reclassified into earnings in the periods in which earnings are affected by the hedged cash flow. The effective portion of the change in fair value of the Hedging Derivatives that the Company has determined qualified as effective fair value hedges is reported as an adjustment to the carrying amount of the corresponding debt being hedged. See Note 11, “Fair Value,” for further discussion of derivative financial instruments.
Legal and Other Contingencies
The Company is involved in various claims and/or administrative proceedings that arise in the ordinary course of its business. While no assurances can be given, the Company does not currently believe that any of these outstanding litigation matters, individually or in the aggregate, will have a material adverse effect on its financial condition or results of operations.
6

Table of Contents
Acquisitions of Investments in Real Estate
The Company accounts for acquisitions of investments in real estate in accordance with the authoritative guidance for the initial measurement, which first requires that the Company determine if the real estate investment is the acquisition of an asset or a business combination. Under either model, the Company must identify and determine the fair value of any assets acquired, liabilities assumed and any noncontrolling interest in the acquiree. Typical assets acquired and liabilities assumed include land, building, furniture, fixtures and equipment, debt and identified intangible assets and liabilities, consisting of the value of above or below market leases and in-place leases. In making estimates of fair values for purposes of allocating purchase price, the Company utilizes various sources, including its own analysis of recently acquired and existing comparable properties in its portfolio and other market data. Consideration for acquisitions is typically in the form of cash unless otherwise disclosed. For a business combination, the Company records the assets acquired and liabilities assumed based on the fair value of each respective item. For an asset acquisition, the allocation of the purchase price is based on the relative fair value of the net assets. The Company expenses all applicable acquisition costs for a business combination and capitalizes all applicable acquisition costs for an asset acquisition. The Company expects that acquisitions of individual operating communities will generally be viewed as asset acquisitions.
Use of Estimates
The preparation of financial statements in conformity with GAAP requires management to make certain estimates and assumptions. These estimates and assumptions affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the dates of the financial statements and the reported amounts of revenue and expenses during the reporting periods. Actual results could differ from those estimates.
Reclassifications
Certain reclassifications have been made to amounts in prior years' notes to financial statements to conform to current year presentations as a result of changes in held for sale classification, disposition activity and segment classification.
For-Sale Condominium Inventory
The Company presents for-sale condominium inventory at historical cost and evaluates the condominiums for impairment when potential indicators exist, as further discussed in Note 6, "Real Estate Disposition Activities."
Leases
The Company is party to leases as both a lessor and a lessee, primarily as follows:
•lessor of residential and commercial space within its apartment communities; and
•lessee under (i) ground leases for land underlying current operating or development communities and certain commercial and parking facilities and (ii) office leases for its corporate headquarters and regional offices.
Lessee Considerations
The Company assesses whether a contract is or contains a lease based on whether the contract conveys the right to control the use of an identified asset, including specified portions of larger assets, for a period of time in exchange for consideration. The Company’s leases include both fixed and variable lease payments, which are based on an index or rate such as the consumer price index (CPI) or percentage rents based on total sales. Lease payments included in the lease liability include only fixed lease payments including fixed amounts that depend on an index or rate. For leases that have options to extend the term or terminate the lease early, the Company only factored the impact of such options into the lease term if the option was considered reasonably certain to be exercised. The Company determined the discount rate associated with its ground and office leases on a lease by lease basis using the Company’s actual borrowing rates as well as indicative market pricing for longer term rates and taking into consideration the remaining term of each of the lease agreements.
7

Table of Contents
Lessor Considerations
The Company evaluates leases in which it is the lessor, which are composed of residential and commercial leases at its apartment communities, and determined these leases to be operating leases. For lease agreements that provide for rent concessions and/or scheduled fixed and determinable rent increases, rental income is recognized on a straight-line basis over the noncancellable term of the lease, which, for residential leases, is generally one year. Some of the Company’s commercial leases have fixed-price renewal options, and the lessee may be able to exercise its renewal option at an amount less than the fair value of the rent at such time. The Company only includes renewal options in the lease term if, at the commencement of the lease, it is reasonably certain that the lessee will exercise this option.
Additionally, for the Company’s residential and commercial leases, which are comprised of the lease component and common area maintenance as a non-lease component, the Company determined that (i) the leases are operating leases, (ii) the lease component is the predominant component and (iii) all components of its operating leases share the same timing and pattern of transfer.
Revenue and Gain Recognition
Revenue from contracts with customers is recognized in accordance with the transfer of goods and services to customers at an amount that reflects the consideration that the Company expects to be entitled to for those goods and services. The majority of the Company’s revenue is derived from residential and commercial rental income and other lease income, which are accounted for under ASC 842, Leases, discussed above. The Company's revenue streams that are not accounted for under ASC 842 include (i) management fees, (ii) rental and non-rental related income and (iii) gains or losses on the sale of real estate.
The following table provides details of the Company’s revenue streams disaggregated by the Company’s reportable operating segments, further discussed in Note 8, “Segment Reporting,” for the three and nine months ended September 30, 2021 and 2020. Segment information for total revenue has been adjusted to exclude the real estate assets that were sold from January 1, 2020 through September 30, 2021, or otherwise qualify as held for sale as of September 30, 2021, as described in Note 6, "Real Estate Disposition Activities" (dollars in thousands):

|  | For the three months ended
|  | Same Store |  | Other Stabilized |  | Development/ Redevelopment |  | Non- allocated (1) |  | Total
For the period ended September 30, 2021 |  |  |  |  |  |  |  |  |  |
Management, development and other fees and other ancillary items |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 695 |  |  | $ | 695 |
Rental and non-rental related income (2) |  | 1,883 |  |  | 369 |  |  | 171 |  |  | — |  |  | 2,423 |
Total non-lease revenue (3) |  | 1,883 |  |  | 369 |  |  | 171 |  |  | 695 |  |  | 3,118 |
Lease income (4) |  | 517,914 |  |  | 27,539 |  |  | 28,372 |  |  | — |  |  | 573,825 |
Business interruption insurance proceeds |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
Total revenue |  | $ | 519,797 |  |  | $ | 27,908 |  |  | $ | 28,543 |  |  | $ | 695 |  |  | $ | 576,943 |
For the period ended September 30, 2020 |  |  |  |  |  |  |  |  |  |
Management, development and other fees and other ancillary items |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 419 |  |  | $ | 419 |
Rental and non-rental related income (2) |  | 1,965 |  |  | 598 |  |  | 112 |  |  | — |  |  | 2,675 |
Total non-lease revenue (3) |  | 1,965 |  |  | 598 |  |  | 112 |  |  | 419 |  |  | 3,094 |
Lease income (4) |  | 511,171 |  |  | 21,718 |  |  | 6,831 |  |  | — |  |  | 539,720 |
Business interruption insurance proceeds |  | 282 |  |  | — |  |  | — |  |  | — |  |  | 282 |
Total revenue |  | $ | 513,418 |  |  | $ | 22,316 |  |  | $ | 6,943 |  |  | $ | 419 |  |  | $ | 543,096 |

8

Table of Contents

|  | For the nine months ended
|  | Same Store |  | Other Stabilized |  | Development/ Redevelopment |  | Non- allocated (1) |  | Total
For the period ended September 30, 2021 |  |  |  |  |  |  |  |  |  |
Management, development and other fees and other ancillary items |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 2,380 |  |  | $ | 2,380 |
Rental and non-rental related income (2) |  | 5,469 |  |  | 1,148 |  |  | 483 |  |  | — |  |  | 7,100 |
Total non-lease revenue (3) |  | 5,469 |  |  | 1,148 |  |  | 483 |  |  | 2,380 |  |  | 9,480 |
Lease income (4) |  | 1,514,951 |  |  | 75,886 |  |  | 65,060 |  |  | — |  |  | 1,655,897 |
Business interruption insurance proceeds |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
Total revenue |  | $ | 1,520,420 |  |  | $ | 77,034 |  |  | $ | 65,543 |  |  | $ | 2,380 |  |  | $ | 1,665,377 |
For the period ended September 30, 2020 |  |  |  |  |  |  |  |  |  |
Management, development and other fees and other ancillary items |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 1,109 |  |  | $ | 1,109 |
Rental and non-rental related income (2) |  | 5,447 |  |  | 1,637 |  |  | 230 |  |  | — |  |  | 7,314 |
Total non-lease revenue (3) |  | 5,447 |  |  | 1,637 |  |  | 230 |  |  | 1,109 |  |  | 8,423 |
Lease income (4) |  | 1,580,580 |  |  | 63,325 |  |  | 16,889 |  |  | — |  |  | 1,660,794 |
Business interruption insurance proceeds |  | 378 |  |  | — |  |  | — |  |  | — |  |  | 378 |
Total revenue |  | $ | 1,586,405 |  |  | $ | 64,962 |  |  | $ | 17,119 |  |  | $ | 1,109 |  |  | $ | 1,669,595 |

__________________________________
(1)Revenue represents third-party management, asset management and developer fees and miscellaneous income and other ancillary items which are not allocated to a reportable segment.
(2)Amounts include revenue streams related to leasing activities that are not considered components of a lease, including but not limited to, apartment hold fees and application fees, as well as revenue streams not related to leasing activities, including but not limited to, vendor revenue sharing, building advertising, vending and dry cleaning revenue.
(3)Represents all revenue accounted for under ASC 606, Revenue from Contracts with Customers.
(4)Amounts include all revenue streams derived from residential and commercial rental income and other lease income, which are accounted for under ASC 842.
Due to the nature and timing of the Company’s identified revenue streams, there are no material amounts of outstanding or unsatisfied performance obligations as of September 30, 2021.
Lease Revenue Reserves
The Company assesses the collectability of its lease revenue and receivables on an on-going basis. Under ASC 842, Leases, the Company assesses the probability of receiving all remaining lease amounts due on a lease by lease basis, reserving for revenue and the related receivables for those leases where collection of substantially all of the remaining lease payments is not probable. Subsequently, the Company will only recognize revenue to the extent cash is received. If the Company determines that collection of the remaining lease payments becomes probable at a future date, the Company will recognize the cumulative revenue that would have been recorded under the original lease agreement.
In addition to the specific reserves recognized under ASC 842, the Company also evaluates its lease receivables for collectability at a portfolio level under ASC 450, Contingencies – Loss Contingencies. The Company recognizes a reserve under ASC 450 when the uncollectible revenue is probable and reasonably estimable. The Company applies this reserve to the population of the Company’s revenue and receivables not specifically addressed as part of the specific ASC 842 reserve.
9

Table of Contents
COVID-19 Pandemic
In March 2020, the World Health Organization designated COVID-19 as a pandemic. While the Company has taken various actions in response to the COVID-19 pandemic, the ultimate impact on its consolidated results of operations, cash flows, financial condition and liquidity will depend on, among other factors, (i) the effect on the multifamily industry and the general economy of measures taken by businesses and the government to prevent the spread of the novel coronavirus and relieve economic distress of consumers, such as governmental limitations on the ability of multifamily owners to evict residents who are delinquent in the payment of their rent and (ii) the preferences of consumers and businesses for living and working arrangements both during and after the pandemic.
As of September 30, 2021, the Company assessed the collectibility of the outstanding lease income receivables as a result of the impact of the COVID-19 pandemic on its residential and commercial lease portfolios. The Company recorded an aggregate offset to income for uncollectible lease revenue for its residential and commercial portfolios of $8,586,000 and $18,755,000 for the three months ended September 30, 2021 and 2020, respectively, and $42,295,000 and $43,034,000 for the nine months ended September 30, 2021 and 2020, respectively, under ASC 842 and ASC 450.
2. Interest Capitalized
The Company capitalizes interest during the development and redevelopment of real estate assets. Capitalized interest associated with the Company's development or redevelopment activities totaled $7,862,000 and $11,221,000 for the three months ended September 30, 2021 and 2020, respectively, and $25,023,000 and $33,738,000 for the nine months ended September 30, 2021 and 2020, respectively.
3. Mortgage Notes Payable, Unsecured Notes, Term Loans and Credit Facility
The Company's mortgage notes payable, unsecured notes, variable rate unsecured term loans (the "Term Loans") and Credit Facility, as defined below, as of September 30, 2021 and December 31, 2020 are summarized below. The following amounts and discussion do not include the mortgage notes related to the communities classified as held for sale, if any, as of September 30, 2021 and December 31, 2020, as shown in the accompanying Condensed Consolidated Balance Sheets (dollars in thousands) (see Note 6, "Real Estate Disposition Activities").

| 9/30/2021 |  | 12/31/2020
Fixed rate unsecured notes (1) | $ | 6,750,000 |  |  | $ | 6,500,000 |
Term Loans (1) | 250,000 |  |  | 250,000 |
Fixed rate mortgage notes payable - conventional and tax-exempt (2) | 379,636 |  |  | 408,964 |
Variable rate mortgage notes payable - conventional and tax-exempt (2) | 464,650 |  |  | 470,850 |
Total mortgage notes payable and unsecured notes and Term Loans | 7,844,286 |  |  | 7,629,814 |
Credit Facility | — |  |  | — |
Total mortgage notes payable, unsecured notes, Term Loans and Credit Facility | $ | 7,844,286 |  |  | $ | 7,629,814 |

_____________________________________
(1)Balances at September 30, 2021 and December 31, 2020 exclude $9,915 and $10,380, respectively, of debt discount, and $38,448 and $37,615, respectively, of deferred financing costs, as reflected in unsecured notes, net on the accompanying Condensed Consolidated Balance Sheets.
(2)Balances at September 30, 2021 and December 31, 2020 exclude $13,806 and $14,478, respectively, of debt discount, and $2,813 and $3,004, respectively, of deferred financing costs, as reflected in mortgage notes payable, net on the accompanying Condensed Consolidated Balance Sheets.
The following debt activity occurred during the nine months ended September 30, 2021:
•In January 2021, the Company repaid $27,795,000 principal amount of 5.37% fixed rate debt secured by Avalon San Bruno II at par in advance of its April 2021 maturity date.
•In September 2021, the Company repaid $450,000,000 principal amount of its 2.95% unsecured notes in advance of the September 2022 scheduled maturity, recognizing a loss on debt extinguishment of $17,890,000, composed of a prepayment penalty of $12,147,000, and the non-cash write off of unamortized deferred hedging losses and unamortized deferred financing costs of $5,743,000.
10

Table of Contents
•In September 2021, the Company issued $700,000,000 principal amount of unsecured notes in a public offering under its existing shelf registration statement for proceeds net of underwriting fees of approximately $694,617,000, before considering the impact of other offering costs. The notes mature in January 2032 and were issued at a 2.050% interest rate. The notes were issued under the Company's green bond framework, and the Company has allocated or will allocate the net proceeds, in whole or in part, to one or more new or existing eligible green projects.
At September 30, 2021, the Company had a $1,750,000,000 revolving variable rate unsecured credit facility with a syndicate of banks (the “Credit Facility”) which matures in February 2024. The Credit Facility bears interest at varying levels based on (i) the London Interbank Offered Rate (“LIBOR”) applicable to the period of borrowing for a particular draw of funds from the facility (e.g., one month to maturity, three months to maturity, etc.) and (ii) the rating levels issued for our unsecured notes. The current stated pricing for drawn borrowings is LIBOR plus 0.775% per annum (0.86% at September 30, 2021), assuming a one month borrowing rate. The annual facility fee for the Credit Facility remained 0.125%, resulting in a fee of $2,188,000 annually based on the $1,750,000,000 facility size and based on the Company's current credit rating.
The Company had no borrowings outstanding under the Credit Facility and had $2,599,000 and $2,900,000 outstanding in letters of credit that reduced the borrowing capacity as of September 30, 2021 and December 31, 2020, respectively. In addition, the Company had $37,596,000 and $32,079,000 outstanding in additional letters of credit unrelated to the Credit Facility as of September 30, 2021 and December 31, 2020, respectively.
In the aggregate, secured notes payable mature at various dates from March 2027 through July 2066, and are secured by certain apartment communities (with a net carrying value of $1,365,559,000, excluding communities classified as held for sale, as of September 30, 2021).
The weighted average interest rate of the Company's fixed rate secured notes payable (conventional and tax-exempt) was 3.8% at both September 30, 2021 and December 31, 2020. The weighted average interest rate of the Company's variable rate secured notes payable (conventional and tax-exempt), including the effect of certain financing related fees, was 1.6% and 1.7% at September 30, 2021 and December 31, 2020, respectively.
Scheduled payments and maturities of secured notes payable and unsecured notes outstanding at September 30, 2021 are as follows (dollars in thousands):

Year |  | Secured notes principal payments |  | Secured notes maturities |  | Unsecured notes and Term Loans maturities |  | Stated interest rate of unsecured notes and Term Loans
2021 |  | $ | 1,460 |  |  | $ | — |  |  | $ | — |  |  | N/A
2022 |  | 9,918 |  |  | — |  |  | — |  |  | N/A
|  |  |  |  |  | 100,000 |  |  | LIBOR + 0.90%
2023 |  | 10,739 |  |  | — |  |  | 350,000 |  |  | 4.200 | %
|  |  |  |  |  | 250,000 |  |  | 2.850 | %
2024 |  | 11,677 |  |  | — |  |  | 300,000 |  |  | 3.500 | %
|  |  |  |  |  | 150,000 |  |  | LIBOR + 0.85%
2025 |  | 12,408 |  |  | — |  |  | 525,000 |  |  | 3.450 | %
|  |  |  |  |  | 300,000 |  |  | 3.500 | %
2026 |  | 13,445 |  |  | — |  |  | 475,000 |  |  | 2.950 | %
|  |  |  |  |  | 300,000 |  |  | 2.900 | %
2027 |  | 15,880 |  |  | 236,100 |  |  | 400,000 |  |  | 3.350 | %
2028 |  | 20,707 |  |  | — |  |  | 450,000 |  |  | 3.200 | %
2029 |  | 11,742 |  |  | 66,250 |  |  | 450,000 |  |  | 3.300 | %
2030 |  | 12,384 |  |  | — |  |  | 700,000 |  |  | 2.300 | %
Thereafter |  | 176,078 |  |  | 245,498 |  |  | 600,000 |  |  | 2.450 | %
|  |  |  |  |  | 700,000 |  |  | 2.050 | %
|  |  |  |  |  | 350,000 |  |  | 3.900 | %
|  |  |  |  |  | 300,000 |  |  | 4.150 | %
|  |  |  |  |  | 300,000 |  |  | 4.350 | %
|  | $ | 296,438 |  |  | $ | 547,848 |  |  | $ | 7,000,000 |  |  |

11

Table of Contents
The Company was in compliance at September 30, 2021 with customary financial covenants under the Credit Facility, the Term Loans and the Company's fixed rate unsecured notes.
4. Equity
The following summarizes the changes in equity for the nine months ended September 30, 2021 (dollars in thousands):

| Common stock |  | Additional paid-in capital |  | Accumulated earnings less dividends |  | Accumulated other comprehensive loss |  | Total stockholder's equity |  | Noncontrolling interests |  | Total equity
Balance at December 31, 2020 | $ | 1,395 |  |  | $ | 10,664,416 |  |  | $ | 126,022 |  |  | $ | (40,250) |  |  | $ | 10,751,583 |  |  | $ | 591 |  |  | $ | 10,752,174 |
Net income attributable to common stockholders | — |  |  | — |  |  | 142,223 |  |  | — |  |  | 142,223 |  |  | — |  |  | 142,223 |
Cash flow hedge losses reclassified to earnings | — |  |  | — |  |  | — |  |  | 2,367 |  |  | 2,367 |  |  | — |  |  | 2,367 |
Change in redemption value of redeemable noncontrolling interest | — |  |  | — |  |  | (273) |  |  | — |  |  | (273) |  |  | — |  |  | (273) |
Noncontrolling interest distribution and income allocation | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | (16) |  |  | (16) |
Dividends declared to common stockholders ($1.59 per share) | — |  |  | — |  |  | (221,779) |  |  | — |  |  | (221,779) |  |  | — |  |  | (221,779) |
Issuance of common stock, net of withholdings | 1 |  |  | (14,037) |  |  | 958 |  |  | — |  |  | (13,078) |  |  | — |  |  | (13,078) |
Amortization of deferred compensation | — |  |  | 7,286 |  |  | — |  |  | — |  |  | 7,286 |  |  | — |  |  | 7,286 |
Balance at March 31, 2021 | $ | 1,396 |  |  | $ | 10,657,665 |  |  | $ | 47,151 |  |  | $ | (37,883) |  |  | $ | 10,668,329 |  |  | $ | 575 |  |  | $ | 10,668,904 |
Net income attributable to common stockholders | — |  |  | — |  |  | 447,953 |  |  | — |  |  | 447,953 |  |  | — |  |  | 447,953 |
Loss on cash flow hedges, net | — |  |  | — |  |  | — |  |  | (822) |  |  | (822) |  |  | — |  |  | (822) |
Cash flow hedge losses reclassified to earnings | — |  |  | — |  |  | — |  |  | 2,366 |  |  | 2,366 |  |  | — |  |  | 2,366 |
Change in redemption value of redeemable noncontrolling interest | — |  |  | — |  |  | (255) |  |  | — |  |  | (255) |  |  | — |  |  | (255) |
Noncontrolling interest distribution and income allocation | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | (7) |  |  | (7) |
Dividends declared to common stockholders ($1.59 per share) | — |  |  | — |  |  | (222,451) |  |  | — |  |  | (222,451) |  |  | — |  |  | (222,451) |
Issuance of common stock, net of withholdings | — |  |  | 2,496 |  |  | — |  |  | — |  |  | 2,496 |  |  | — |  |  | 2,496 |
Amortization of deferred compensation | — |  |  | 10,403 |  |  | — |  |  | — |  |  | 10,403 |  |  | — |  |  | 10,403 |
Balance at June 30, 2021 | $ | 1,396 |  |  | $ | 10,670,564 |  |  | $ | 272,398 |  |  | $ | (36,339) |  |  | $ | 10,908,019 |  |  | $ | 568 |  |  | $ | 10,908,587 |
Net income attributable to common stockholders | — |  |  | — |  |  | 78,914 |  |  | — |  |  | 78,914 |  |  | — |  |  | 78,914 |
Gain on cash flow hedges, net | — |  |  | — |  |  | — |  |  | 2,010 |  |  | 2,010 |  |  | — |  |  | 2,010 |
Cash flow hedge losses reclassified to earnings | — |  |  | — |  |  | — |  |  | 7,405 |  |  | 7,405 |  |  | — |  |  | 7,405 |
Change in redemption value of redeemable noncontrolling interest | — |  |  | — |  |  | (261) |  |  | — |  |  | (261) |  |  | — |  |  | (261) |
Noncontrolling interest distribution and income allocation | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 2 |  |  | 2 |
Dividends declared to common stockholders ($1.59 per share) | — |  |  | — |  |  | (222,475) |  |  | — |  |  | (222,475) |  |  | — |  |  | (222,475) |
Issuance of common stock, net of withholdings | — |  |  | 4,633 |  |  | (27) |  |  | — |  |  | 4,606 |  |  | — |  |  | 4,606 |
Amortization of deferred compensation | — |  |  | 9,442 |  |  | — |  |  | — |  |  | 9,442 |  |  | — |  |  | 9,442 |
Balance at September 30, 2021 | $ | 1,396 |  |  | $ | 10,684,639 |  |  | $ | 128,549 |  |  | $ | (26,924) |  |  | $ | 10,787,660 |  |  | $ | 570 |  |  | $ | 10,788,230 |

12

Table of Contents
The following summarizes the changes in equity for the nine months ended September 30, 2020 (dollars in thousands):

| Common stock |  | Additional paid-in capital |  | Accumulated earnings less dividends |  | Accumulated other comprehensive loss |  | Total stockholder's equity |  | Noncontrolling interests |  | Total equity
Balance at December 31, 2019 | $ | 1,406 |  |  | $ | 10,736,733 |  |  | $ | 282,913 |  |  | $ | (31,503) |  |  | $ | 10,989,549 |  |  | $ | 649 |  |  | $ | 10,990,198 |
Net income attributable to common stockholders | — |  |  | — |  |  | 167,971 |  |  | — |  |  | 167,971 |  |  | — |  |  | 167,971 |
Loss on cash flow hedges, net | — |  |  | — |  |  | — |  |  | (17,603) |  |  | (17,603) |  |  | — |  |  | (17,603) |
Cash flow hedge losses reclassified to earnings | — |  |  | — |  |  | — |  |  | 1,949 |  |  | 1,949 |  |  | — |  |  | 1,949 |
Change in redemption value of redeemable noncontrolling interest | — |  |  | — |  |  | 471 |  |  | — |  |  | 471 |  |  | — |  |  | 471 |
Noncontrolling interests income allocation | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | (35) |  |  | (35) |
Dividends declared to common stockholders ($1.59 per share) | — |  |  | — |  |  | (224,083) |  |  | — |  |  | (224,083) |  |  | — |  |  | (224,083) |
Issuance of common stock, net of withholdings | 1 |  |  | (12,492) |  |  | (1,616) |  |  | — |  |  | (14,107) |  |  | — |  |  | (14,107) |
Amortization of deferred compensation | — |  |  | 7,781 |  |  | — |  |  | — |  |  | 7,781 |  |  | — |  |  | 7,781 |
Balance at March 31, 2020 | $ | 1,407 |  |  | $ | 10,732,022 |  |  | $ | 225,656 |  |  | $ | (47,157) |  |  | $ | 10,911,928 |  |  | $ | 614 |  |  | $ | 10,912,542 |
Net income attributable to common stockholders | — |  |  | — |  |  | 170,828 |  |  | — |  |  | 170,828 |  |  | — |  |  | 170,828 |
Loss on cash flow hedges, net | — |  |  | — |  |  | — |  |  | (1,461) |  |  | (1,461) |  |  | — |  |  | (1,461) |
Cash flow hedge losses reclassified to earnings | — |  |  | — |  |  | — |  |  | 2,301 |  |  | 2,301 |  |  | — |  |  | 2,301 |
Change in redemption value of redeemable noncontrolling interest | — |  |  | — |  |  | (146) |  |  | — |  |  | (146) |  |  | — |  |  | (146) |
Noncontrolling interests income allocation | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 1 |  |  | 1 |
Dividends declared to common stockholders ($1.59 per share) | — |  |  | — |  |  | (224,172) |  |  | — |  |  | (224,172) |  |  | — |  |  | (224,172) |
Issuance of common stock, net of withholdings | — |  |  | 1,050 |  |  | 138 |  |  | — |  |  | 1,188 |  |  | — |  |  | 1,188 |
Amortization of deferred compensation | — |  |  | 9,724 |  |  | — |  |  | — |  |  | 9,724 |  |  | — |  |  | 9,724 |
Balance at June 30, 2020 | $ | 1,407 |  |  | $ | 10,742,796 |  |  | $ | 172,304 |  |  | $ | (46,317) |  |  | $ | 10,870,190 |  |  | $ | 615 |  |  | $ | 10,870,805 |
Net income attributable to common stockholders | — |  |  | — |  |  | 147,703 |  |  | — |  |  | 147,703 |  |  | — |  |  | 147,703 |
Gain on cash flow hedges, net | — |  |  | — |  |  | — |  |  | 1,333 |  |  | 1,333 |  |  | — |  |  | 1,333 |
Cash flow hedge losses reclassified to earnings | — |  |  | — |  |  | — |  |  | 2,367 |  |  | 2,367 |  |  | — |  |  | 2,367 |
Change in redemption value of redeemable noncontrolling interest | — |  |  | — |  |  | 62 |  |  | — |  |  | 62 |  |  | — |  |  | 62 |
Noncontrolling interest distribution and income allocation | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | (17) |  |  | (17) |
Dividends declared to common stockholders ($1.59 per share) | — |  |  | — |  |  | (222,694) |  |  | — |  |  | (222,694) |  |  | — |  |  | (222,694) |
Issuance of common stock, net of withholdings | — |  |  | 105 |  |  | — |  |  | — |  |  | 105 |  |  | — |  |  | 105 |
Repurchase of common stock, including repurchase costs | (9) |  |  | (69,779) |  |  | (67,670) |  |  | — |  |  | (137,458) |  |  | — |  |  | (137,458) |
Amortization of deferred compensation | — |  |  | 8,036 |  |  | — |  |  | — |  |  | 8,036 |  |  | — |  |  | 8,036 |
Balance at September 30, 2020 | $ | 1,398 |  |  | $ | 10,681,158 |  |  | $ | 29,705 |  |  | $ | (42,617) |  |  | $ | 10,669,644 |  |  | $ | 598 |  |  | $ | 10,670,242 |

As of September 30, 2021 and December 31, 2020, the Company's charter had authorized for issuance a total of 280,000,000 shares of common stock and 50,000,000 shares of preferred stock.
13

Table of Contents
During the nine months ended September 30, 2021, the Company:
i.issued 2,126 shares of common stock in connection with stock options exercised;
ii.issued 2,223 shares of common stock through the Company's dividend reinvestment plan;
iii.issued 153,379 shares of common stock in connection with restricted stock grants and the conversion of performance awards to shares of common stock;
iv.sold 21,000 shares of common stock under CEP V, as discussed below;
v.withheld 75,542 shares of common stock to satisfy employees' tax withholding and other liabilities;
vi.issued 12,145 shares of common stock through the Employee Stock Purchase Plan; and
vii.canceled 3,077 shares of restricted common stock upon forfeiture.
Any deferred compensation related to the Company's stock option, restricted stock and performance award grants as of September 30, 2021 is not reflected on the accompanying Condensed Consolidated Balance Sheets as of September 30, 2021, and will not be reflected until recognized as compensation cost.
In July 2020, the Company’s Board of Directors voted to terminate the Company’s prior $500,000,000 Stock Repurchase Program (the "Amended 2005 Stock Repurchase Program") and approved a new stock repurchase program under which the Company may acquire shares of its common stock in open market or negotiated transactions up to an aggregate purchase price of $500,000,000 (the "2020 Stock Repurchase Program"). Purchases of common stock under the 2020 Stock Repurchase Program may be exercised from time to time in the Company’s discretion and in such amounts as market conditions warrant. The timing and actual number of shares repurchased will depend on a variety of factors, including price, corporate and regulatory requirements, market conditions and other corporate liquidity requirements and priorities. The 2020 Stock Repurchase Program does not have an expiration date and may be suspended or terminated at any time without prior notice. During the nine months ended September 30, 2021, the Company had no repurchases of shares under this program. As of September 30, 2021, the Company had $316,148,000 remaining authorized for purchase under this program.
In May 2019, the Company commenced a fifth continuous equity program ("CEP V") under which the Company may sell (and/or enter into forward sale agreements for the sale of) up to $1,000,000,000 of its common stock from time to time. Actual sales will depend on a variety of factors to be determined by the Company, including market conditions, the trading price of the Company's common stock and determinations by the Company of the appropriate sources of funding for the Company. In conjunction with CEP V, the Company engaged sales agents who will receive compensation of up to 1.5% of the gross sales price for shares sold. The Company expects that, if entered into, it will physically settle each forward sale agreement on one or more dates specified by the Company on or prior to the maturity date of that particular forward sale agreement, in which case the Company will expect to receive aggregate net cash proceeds at settlement equal to the number of shares underlying the particular forward agreement multiplied by the relevant forward sale price. However, the Company may also elect to cash settle or net share settle a forward sale agreement. In connection with each forward sale agreement, the Company will pay the relevant forward seller, in the form of a reduced initial forward sale price, a commission of up to 1.5% of the sales prices of all borrowed shares of common stock sold. During the three and nine months ended September 30, 2021, the Company sold 21,000 shares of common stock at an average sales price of $227.60 per share, for net proceeds of $4,708,000 under the program. As of September 30, 2021, the Company had $748,099,000 remaining authorized for issuance under CEP V.
14

Table of Contents
5. Investments in Real Estate Entities
Investments in Unconsolidated Real Estate Entities
As of September 30, 2021, the Company had investments in eight unconsolidated real estate entities with ownership interest percentages ranging from 20.0% to 50.0% and other unconsolidated investments. The Company accounts for its investments in unconsolidated real estate entities under the equity method of accounting or under the measurement alternative with the carrying amount of the investment adjusted to fair value when there is an observable transaction for the same or similar investment of the same issuer indicating a change in fair value. The significant accounting policies of the Company's unconsolidated real estate entities are consistent with those of the Company in all material respects.
During the nine months ended September 30, 2021, Archstone Multifamily Partners AC JV LP (the "AC JV") sold its final two communities, Avalon North Point and Avalon North Point Lofts, located in Cambridge, MA, containing an aggregate of 529 apartment homes, for $325,000,000. The Company's share of the gain was $23,305,000. In conjunction with the disposition of Avalon North Point, the AC JV repaid a $111,653,000 loan to the equity investors in the venture at par.
The following is a combined summary of the financial position of the entities accounted for using the equity method or the measurement alternative discussed above as of the dates presented, including development joint ventures started and unconsolidated communities sold during the respective periods (dollars in thousands):

| 9/30/2021 |  | 12/31/2020
| (unaudited) |  |
Assets: |  |  |
Real estate, net | $ | 1,171,955 |  |  | $ | 1,249,730 |
Other assets | 326,339 |  |  | 255,606 |
Total assets | $ | 1,498,294 |  |  | $ | 1,505,336 |
Liabilities and partners' capital: |  |  |
Mortgage notes payable, net (1) | $ | 636,796 |  |  | $ | 751,257 |
Other liabilities | 172,660 |  |  | 163,808 |
Partners' capital | 688,838 |  |  | 590,271 |
Total liabilities and partners' capital | $ | 1,498,294 |  |  | $ | 1,505,336 |

_________________________________
(1) Includes the variable rate construction loan secured by AVA Arts District, of which $1,032,000 has been drawn as of September 30, 2021. The Company has guaranteed the construction loan on behalf of the venture, and any obligations the Company may incur under the guarantee, except for those due to misconduct by the Company, are required capital contributions of the partners based on ownership interest. The Company has not guaranteed any other outstanding debt, nor does the Company have any obligation to fund this debt should the unconsolidated entity be unable to do so.
The following is a combined summary of the operating results of the entities accounted for using the equity method discussed above for the periods presented (dollars in thousands):

| For the three months ended |  | For the nine months ended
| 9/30/2021 |  | 9/30/2020 |  | 9/30/2021 |  | 9/30/2020
| (unaudited) |  | (unaudited)
Rental and other income (1) | $ | 44,819 |  |  | $ | 28,800 |  |  | $ | 111,562 |  |  | $ | 92,299 |
Operating and other expenses | (10,698) |  |  | (12,782) |  |  | (34,992) |  |  | (37,034) |
Gain on sale of communities | — |  |  | 18,408 |  |  | 164,317 |  |  | 18,448 |
Interest expense, net | (6,137) |  |  | (8,024) |  |  | (21,386) |  |  | (24,133) |
Depreciation expense | (6,912) |  |  | (8,704) |  |  | (22,831) |  |  | (26,106) |
Net income | $ | 21,072 |  |  | $ | 17,698 |  |  | $ | 196,670 |  |  | $ | 23,474 |
Company's share of net income from investments in unconsolidated entities | $ | 7,287 |  |  | $ | 5,611 |  |  | $ | 34,435 |  |  | $ | 8,357 |
Amortization of excess investment and other | (420) |  |  | (528) |  |  | (1,476) |  |  | (1,587) |
Income from investments in unconsolidated entities | $ | 6,867 |  |  | $ | 5,083 |  |  | $ | 32,959 |  |  | $ | 6,770 |

_________________________________
15

Table of Contents
(1) Includes unrealized gains on property technology investments during the three and nine months ended September 30, 2021.
Investments in Consolidated Real Estate Entities
During the nine months ended September 30, 2021, the Company acquired four consolidated communities:
•Avalon Arundel Crossing East, located in Linthicum Heights, MD, which contains 384 apartment homes and was acquired for a purchase price of $119,000,000.
•The Nexus Lakeside, located in Flower Mound, TX, which contains 425 apartment homes and 18,000 square feet of commercial space and was acquired for a purchase price of $117,000,000.
•Hub South End, located in Charlotte, NC, which contains 265 apartment homes and 23,000 square feet of commercial space and was acquired for a purchase price of $104,350,000.
•Three30Five, located in Charlotte, NC, which contains 164 apartment homes and was acquired for a purchase price of $52,650,000.
The Company accounted for these purchases as asset acquisitions and recorded the acquired assets and assumed liabilities, including identifiable intangibles, at their relative fair values based on the purchase price and acquisition costs incurred. The Company used third party pricing or internal models for the value of the land, a valuation model for the value of the building, and an internal model to determine the fair value of the remaining real estate assets and in-place leases. Given the heterogeneous nature of multifamily real estate, the fair values for the land, debt, real estate assets and in-place leases incorporated significant unobservable inputs and therefore are considered to be Level 3 prices within the fair value hierarchy.
Expensed Transaction, Development and Other Pursuit Costs
The Company capitalizes pre-development costs incurred in pursuit of new development opportunities for which the Company currently believes future development is probable ("Development Rights"). Future development of these Development Rights is dependent upon various factors, including zoning and regulatory approval, rental market conditions, construction costs and the availability of capital. Initial pre-development costs incurred for pursuits for which future development is not yet considered probable are expensed as incurred. In addition, if the status of a Development Right changes, making future development by the Company no longer probable, any non-recoverable capitalized pre-development costs are expensed. The Company expensed costs related to development pursuits not yet considered probable for development and the abandonment of Development Rights, as well as costs incurred in pursuing the acquisition or disposition of assets for which such acquisition and disposition activity did not occur. The amounts for the three and nine months ended September 30, 2021 and 2020, were $417,000 and $1,900,000 and $567,000 and $4,289,000, respectively. These costs are included in expensed transaction, development and other pursuit costs, net of recoveries on the accompanying Condensed Consolidated Statements of Comprehensive Income. Abandoned pursuit costs can vary greatly, and the costs incurred in any given period may be significantly different in future periods.
Casualty and Impairment of Long-Lived Assets
In the Company's evaluation of its real estate portfolio for impairment, as discussed below, it considered the impact of the COVID-19 pandemic and did not identify any indicators of impairment as a result.
The Company evaluates its real estate and other long-lived assets for impairment when potential indicators of impairment exist. Such assets are stated at cost, less accumulated depreciation and amortization, unless the carrying amount of the asset is not recoverable. If events or circumstances indicate that the carrying amount of a property or long-lived asset may not be recoverable, the Company assesses its recoverability by comparing the carrying amount of the property or long-lived asset to its estimated undiscounted future cash flows. If the carrying amount exceeds the aggregate undiscounted future cash flows, the Company recognizes an impairment loss to the extent the carrying amount exceeds the estimated fair value of the property or long-lived asset. Based on periodic tests of recoverability of long-lived assets, the Company did not recognize any impairment losses for the three and nine months ended September 30, 2021 and 2020, other than those related to casualty losses from property damage. During the three and nine months ended September 30, 2021, the Company recognized a charge of $1,971,000 for the property and casualty damages across several communities in its East Coast markets related to severe storms, reported as casualty and impairment loss on the accompanying Condensed Consolidated Statements of Comprehensive Income. In addition, during the nine months ended September 30, 2021, the Company recognized a charge of $1,146,000 for
16

Table of Contents
the property and casualty damages resulting from a fire at an operating community, reported as casualty and impairment loss on the accompanying Condensed Consolidated Statements of Comprehensive Income.
The Company evaluates its for-sale condominium inventory for potential indicators of impairment, considering whether the fair value of the individual for-sale condominium units exceeds the carrying value of those units. For-sale condominium inventory is stated at cost, unless the carrying amount of the inventory is not recoverable when compared to the fair value of each unit. The Company determines the fair value of its for-sale condominium inventory as the estimated sales price less direct costs to sell. For the three and nine months ended September 30, 2021 and 2020, the Company did not recognize any impairment losses on its for-sale condominium inventory.
The Company assesses its portfolio of land held for both development and investment for impairment if the intent of the Company changes with respect to either the development of, or the expected holding period for, the land. During the three and nine months ended September 30, 2021 and 2020, the Company did not recognize any impairment charges on its investment in land.
The Company evaluates its unconsolidated investments for other than temporary impairment, considering both the extent and amount by which the carrying value of the investment exceeds the fair value, and the Company's intent and ability to hold the investment to recover its carrying value. The Company also evaluates its proportionate share of any impairment of assets held by unconsolidated investments. There were no other than temporary impairment losses recognized for any of the Company's investments in unconsolidated real estate entities during the three and nine months ended September 30, 2021 and 2020.
6. Real Estate Disposition Activities
The following real estate sales occurred during the nine months ended September 30, 2021:

Community name |  | Location |  | Period of sale |  | Apartment homes |  | Gross sales price |  | Gain on disposition (1)
eaves Stamford |  | Stamford, CT |  | Q121 |  | 238 |  | $ | 72,000 |  |  | $ | 53,775 |
Avalon Norwalk |  | Norwalk, CT |  | Q221 |  | 311 |  | $ | 103,000 |  |  | $ | 48,912 |
AVA Cortez Hill |  | San Diego, CA |  | Q221 |  | 299 |  | $ | 96,500 |  |  | $ | 75,716 |
Avalon Redmond Place |  | Redmond, WA |  | Q221 |  | 222 |  | $ | 97,700 |  |  | $ | 72,929 |
Avalon Bronxville |  | Bronxville, NY |  | Q221 |  | 110 |  | $ | 89,000 |  |  | $ | 71,773 |
Avalon Glen Cove & Avalon Glen Cove North |  | Glen Cove, NY |  | Q221 |  | 367 |  | $ | 126,000 |  |  | $ | 65,242 |

_________________________________
(1) Gain on disposition was reported in gain on sale of communities on the accompanying Condensed Consolidated Statements of Comprehensive Income.
At September 30, 2021, the Company had one real estate asset that qualified as held for sale.
The Park Loggia
The Park Loggia, located in New York, NY, contains 172 for-sale residential condominiums and 66,000 square feet of commercial space. During the three and nine months ended September 30, 2021, the Company sold 17 and 43 residential condominiums at The Park Loggia, for gross proceeds of $54,277,000 and $107,278,000, respectively, resulting in a gain in accordance with GAAP of $1,345,000 and $2,051,000, respectively. As of September 30, 2021, the Company had sold 113 residential condominiums and there were 59 residential condominiums remaining to be sold. The Company incurred $1,187,000 and $1,373,000 during the three months ended September 30, 2021 and 2020, respectively, and $3,453,000 and $4,012,000 during the nine months ended September 30, 2021 and 2020, respectively, in marketing, operating and administrative costs. All amounts are included in net for-sale condominium activity, on the accompanying Condensed Consolidated Statements of Comprehensive Income. As of September 30, 2021 and December 31, 2020, the unsold for-sale residential condominiums at The Park Loggia had an aggregate carrying value of $171,113,000 and $267,219,000, respectively, presented as for-sale condominium inventory on the accompanying Condensed Consolidated Balance Sheets.
17

Table of Contents
7. Commitments and Contingencies
Lease Obligations
The Company owns eight apartment communities and two commercial properties, located on land subject to ground leases expiring between July 2046 and March 2142. The Company has purchase options for all ground leases expiring prior to 2060. The ground leases for seven of the eight apartment communities and the rest of the ground leases are operating leases, with rental expense recognized on a straight-line basis over the lease term. In addition, the Company is party to 13 leases for its corporate and regional offices with varying terms through 2031, all of which are operating leases. During the three and nine months ended September 30, 2021, the Company exercised its purchase option under an operating lease, acquiring the land encumbered by the ground lease for Avalon Hackensack at Riverside for $10,336,000.
As of September 30, 2021 and December 31, 2020, the Company had total operating lease assets of $126,699,000 and $133,581,000, respectively, and lease obligations of $154,790,000 and $161,313,000, respectively, reported as components of right of use lease assets and lease liabilities, respectively, on the accompanying Condensed Consolidated Balance Sheets. The Company incurred costs of $3,905,000 and $3,958,000 for the three months ended September 30, 2021 and 2020, respectively, and $11,628,000 and $12,115,000 for the nine months ended September 30, 2021 and 2020, respectively, related to operating leases.
The Company has one apartment community located on land subject to a ground lease and three leases for portions of parking garages, adjacent to apartment communities, that are finance leases. As of September 30, 2021 and December 31, 2020, the Company had total finance lease assets of $25,616,000 and $21,685,000, respectively, and total finance lease obligations of $20,131,000 and $20,166,000, respectively, reported as components of right of use lease assets and lease liabilities, respectively, on the accompanying Condensed Consolidated Balance Sheets.
8. Segment Reporting
The Company's reportable operating segments include Same Store, Other Stabilized, and Development/Redevelopment. Annually as of January 1, the Company determines which of its communities fall into each of these categories and generally maintains that classification throughout the year for the purpose of reporting segment operations, unless disposition or redevelopment plans regarding a community change. In addition, the Company owns land for future development and has other corporate assets that are not allocated to an operating segment.
The Company's segment disclosures present the measure(s) used by the chief operating decision maker ("CODM") for purposes of assessing each segment's performance. The Company's CODM is comprised of several members of its executive management team who use net operating income ("NOI") as the primary financial measure for Same Store communities and Other Stabilized communities. NOI is defined by the Company as total property revenue less direct property operating expenses (including property taxes), and excluding corporate-level income (including management, development and other fees), corporate-level property management and other indirect operating expenses, expensed transaction, development and other pursuit costs, net of recoveries, interest expense, net, loss (gain) on extinguishment of debt, net, general and administrative expense, income from investments in unconsolidated entities, depreciation expense, corporate income tax expense (benefit), casualty and impairment loss, gain on sale of communities, gain on other real estate transactions, net, net for-sale condominium activity and net operating income from real estate assets sold or held for sale. The CODM evaluates the Company's financial performance on a consolidated residential and commercial basis, as the Company's commercial results attributable to the non-apartment components of the Company's mixed-use communities and other nonresidential operations represents 1.8% and 1.2% of total NOI for the three months ended September 30, 2021 and 2020, respectively, and 1.6% and 1.1% for the nine months ended September 30, 2021 and 2020, respectively. Although the Company considers NOI a useful measure of a community's or communities' operating performance, NOI should not be considered an alternative to net income or net cash flow from operating activities, as determined in accordance with GAAP. NOI excludes a number of income and expense categories as detailed in the reconciliation of NOI to net income.
A reconciliation of NOI to net income for the three and nine months ended September 30, 2021 and 2020 is as follows (dollars in thousands):
18

Table of Contents

| For the three months ended |  | For the nine months ended
| 9/30/2021 |  | 9/30/2020 |  | 9/30/2021 |  | 9/30/2020
Net income | $ | 78,847 |  |  | $ | 147,717 |  |  | $ | 669,058 |  |  | $ | 486,592 |
Property management and other indirect operating expenses, net of corporate income | 25,322 |  |  | 23,837 |  |  | 74,110 |  |  | 70,043 |
Expensed transaction, development and other pursuit costs, net of recoveries | 417 |  |  | 567 |  |  | 1,900 |  |  | 4,289 |
Interest expense, net | 55,987 |  |  | 53,249 |  |  | 164,704 |  |  | 162,562 |
Loss (gain) on extinguishment of debt, net | 17,890 |  |  | (105) |  |  | 17,768 |  |  | 9,333 |
General and administrative expense | 17,313 |  |  | 13,985 |  |  | 53,130 |  |  | 46,878 |
Income from investments in unconsolidated entities | (6,867) |  |  | (5,083) |  |  | (32,959) |  |  | (6,770) |
Depreciation expense | 193,791 |  |  | 175,348 |  |  | 561,560 |  |  | 529,508 |
Income tax expense (benefit) | 2,179 |  |  | (27) |  |  | 1,434 |  |  | (1,069) |
Casualty and impairment loss | 1,940 |  |  | — |  |  | 3,117 |  |  | — |
Gain on sale of communities | (58) |  |  | (31,607) |  |  | (388,354) |  |  | (91,338) |
Gain on other real estate transactions, net | (1,543) |  |  | (129) |  |  | (2,002) |  |  | (328) |
Net for-sale condominium activity | (158) |  |  | 646 |  |  | 1,402 |  |  | (4,162) |
Net operating income from real estate assets sold or held for sale | (2,373) |  |  | (14,686) |  |  | (17,393) |  |  | (47,798) |
Net operating income | $ | 382,687 |  |  | $ | 363,712 |  |  | $ | 1,107,475 |  |  | $ | 1,157,740 |

The following is a summary of NOI from real estate assets sold or held for sale for the periods presented (dollars in thousands):

| For the three months ended |  | For the nine months ended
| 9/30/2021 |  | 9/30/2020 |  | 9/30/2021 |  | 9/30/2020
Rental income from real estate assets sold or held for sale | $ | 3,831 |  |  | $ | 24,308 |  |  | $ | 28,276 |  |  | $ | 75,864 |
Operating expenses from real estate assets sold or held for sale | (1,458) |  |  | (9,622) |  |  | (10,883) |  |  | (28,066) |
Net operating income from real estate assets sold or held for sale | $ | 2,373 |  |  | $ | 14,686 |  |  | $ | 17,393 |  |  | $ | 47,798 |

The primary performance measure for communities under development or redevelopment depends on the stage of completion. While under development, management monitors actual construction costs against budgeted costs as well as lease-up pace and rent levels compared to budget.
The following table provides details of the Company's segment information as of the dates specified (dollars in thousands). The segments are classified based on the individual community's status at January 1, 2021. Segment information for the three and nine months ended September 30, 2021 and 2020 has been adjusted to exclude the real estate assets that were sold from January 1, 2020 through September 30, 2021, or otherwise qualify as held for sale as of September 30, 2021, as described in Note 6, "Real Estate Disposition Activities."
19

Table of Contents

| For the three months ended |  | For the nine months ended |  |
| Total revenue |  | NOI |  | Total revenue |  | NOI |  | Gross real estate (1)
For the period ended September 30, 2021 |  |  |  |  |  |
Same Store |  |  |  |  |  |  |  |  |
New England | $ | 77,037 |  |  | $ | 48,115 |  |  | $ | 224,614 |  |  | $ | 142,278 |  |  | $ | 2,781,806 |
Metro NY/NJ | 108,776 |  |  | 72,564 |  |  | 319,079 |  |  | 215,147 |  |  | 4,129,121 |
Mid-Atlantic | 85,328 |  |  | 56,103 |  |  | 252,271 |  |  | 168,359 |  |  | 3,575,978 |
Southeast Florida | 8,152 |  |  | 5,026 |  |  | 23,099 |  |  | 13,772 |  |  | 395,594 |
Denver, CO | 6,070 |  |  | 4,011 |  |  | 17,576 |  |  | 11,965 |  |  | 320,214 |
Pacific Northwest | 28,092 |  |  | 19,197 |  |  | 81,640 |  |  | 55,389 |  |  | 1,057,166 |
Northern California | 90,127 |  |  | 63,088 |  |  | 270,124 |  |  | 190,658 |  |  | 3,458,280 |
Southern California | 116,215 |  |  | 79,590 |  |  | 332,017 |  |  | 225,489 |  |  | 4,382,656 |
Total Same Store | 519,797 |  |  | 347,694 |  |  | 1,520,420 |  |  | 1,023,057 |  |  | 20,100,815 |
Other Stabilized | 27,908 |  |  | 18,217 |  |  | 77,034 |  |  | 49,796 |  |  | 1,528,196 |
Development / Redevelopment | 28,543 |  |  | 16,776 |  |  | 65,543 |  |  | 34,622 |  |  | 2,401,751 |
Land Held for Development | N/A |  | N/A |  | N/A |  | N/A |  | 66,769 |
Non-allocated (2) | 695 |  |  | N/A |  | 2,380 |  |  | N/A |  | 278,779 |
Total | $ | 576,943 |  |  | $ | 382,687 |  |  | $ | 1,665,377 |  |  | $ | 1,107,475 |  |  | $ | 24,376,310 |
For the period ended September 30, 2020 |  |  |  |  |  |
Same Store |  |  |  |  |  |  |  |  |
New England | $ | 75,394 |  |  | $ | 48,290 |  |  | $ | 231,478 |  |  | $ | 152,589 |  |  | $ | 2,756,835 |
Metro NY/NJ | 106,542 |  |  | 72,283 |  |  | 325,807 |  |  | 225,793 |  |  | 4,102,402 |
Mid-Atlantic | 84,974 |  |  | 56,721 |  |  | 261,932 |  |  | 182,503 |  |  | 3,550,373 |
Southeast Florida | 6,950 |  |  | 3,331 |  |  | 21,818 |  |  | 11,755 |  |  | 393,594 |
Denver, CO | 5,422 |  |  | 3,418 |  |  | 15,758 |  |  | 10,084 |  |  | 319,038 |
Pacific Northwest | 27,545 |  |  | 18,913 |  |  | 84,808 |  |  | 59,977 |  |  | 1,051,451 |
Northern California | 97,777 |  |  | 71,207 |  |  | 308,522 |  |  | 232,470 |  |  | 3,430,831 |
Southern California | 108,814 |  |  | 72,995 |  |  | 336,282 |  |  | 233,666 |  |  | 4,349,770 |
Total Same Store | 513,418 |  |  | 347,158 |  |  | 1,586,405 |  |  | 1,108,837 |  |  | 19,954,294 |
Other Stabilized | 22,316 |  |  | 14,238 |  |  | 64,962 |  |  | 42,251 |  |  | 1,125,829 |
Development / Redevelopment | 6,943 |  |  | 2,316 |  |  | 17,119 |  |  | 6,652 |  |  | 1,698,823 |
Land Held for Development | N/A |  | N/A |  | N/A |  | N/A |  | 43,494 |
Non-allocated (2) | 419 |  |  | N/A |  | 1,109 |  |  | N/A |  | 399,048 |
Total | $ | 543,096 |  |  | $ | 363,712 |  |  | $ | 1,669,595 |  |  | $ | 1,157,740 |  |  | $ | 23,221,488 |

__________________________________
(1)Does not include gross real estate assets held for sale of $89,529 as of September 30, 2021 and gross real estate assets either sold or classified as held for sale subsequent to September 30, 2020 of $720,432.
(2)Revenue represents third-party management, accounting, and developer fees and miscellaneous income and other ancillary items which are not allocated to a reportable segment. Gross real estate includes the for-sale residential condominiums at The Park Loggia, as discussed in Note 6, "Real Estate Disposition Activities."
9. Stock-Based Compensation Plans
As part of its long-term compensation plans, the Company has granted stock options, performance awards and restricted stock. Details of the outstanding awards and activity are presented below.
Information with respect to stock options granted under the Company's Second Amended and Restated 2009 Equity Incentive Plan (the "2009 Plan") for the three and nine months ended September 30, 2021, is as follows:
20

Table of Contents

|  | 2009 Plan shares |  | Weighted average exercise price per share
Options Outstanding, December 31, 2020 |  | 12,506 |  |  | $ | 129.35 |
Exercised |  | (2,126) |  |  | 121.78 |
Granted (1) |  | 294,115 |  |  | 180.32 |
Forfeited |  | (4,713) |  |  | 180.32 |
Options Outstanding, September 30, 2021 |  | 299,782 |  |  | $ | 178.61 |
Options Exercisable, September 30, 2021 |  | 10,380 |  |  | $ | 130.90 |

__________________________________
(1)Includes 4,847 options resulting from recipient elections to receive a portion of earned restricted stock awards in the form of stock options.
The Company granted stock options in 2021 with the exercise price equal to the closing stock price on the date of grant. The stock options awarded in 2021 will cliff vest in two years on March 1, 2023 and they have a ten-year term. The Company used the Black-Scholes Option Pricing model to determine the grant date fair value of options. The assumptions used are as follows:

|  | 2021
Dividend yield |  | 3.5%
Estimated volatility |  | 27.1%
Risk free rate |  | 0.81%
Expected life of options |  | 5 years
Estimated fair value |  | $28.64

Information with respect to performance awards granted is as follows:

|  | Performance awards |  | Weighted average grant date fair value per award
Outstanding at December 31, 2020 |  | 241,921 |  |  | $ | 195.13 |
Granted (1) |  | 138,033 |  |  | 191.12 |
Change in awards based on performance (2) |  | (37,469) |  |  | 156.00 |
Converted to shares of common stock |  | (56,545) |  |  | 156.00 |
Forfeited |  | (1,418) |  |  | 207.65 |
Outstanding at September 30, 2021 |  | 284,522 |  |  | $ | 206.05 |

__________________________________
(1)The amount of shares of common stock that ultimately may be earned is based on the total shareholder return metrics related to the Company's common stock for 69,064 performance awards and financial metrics related to operating performance, net asset value and leverage metrics of the Company for 68,969 performance awards.
(2)Represents the change in the number of performance awards earned based on performance achievement for the performance period.
The Company used a Monte Carlo model to assess the compensation cost associated with the portion of the performance awards granted in 2021 for which achievement will be determined by using total shareholder return measures. The assumptions used are as follows:

|  | 2021
Dividend yield |  | 3.5%
Estimated volatility over the life of the plan (1) |  | 22.0% - 49.0%
Risk free rate |  | 0.06% - 0.38%
Estimated performance award value based on total shareholder return measure |  | $213.16

__________________________________
(1)Estimated volatility over the life of the plan is using 50% historical volatility and 50% implied volatility.
For the portion of the performance awards granted in 2021 for which achievement will be determined by using financial metrics, the compensation cost was based on a weighted average grant date value of $178.38, and the Company's estimate of corporate achievement for the financial metrics.
21

Table of Contents
Information with respect to restricted stock granted is as follows:

|  | Restricted stock shares |  | Restricted stock shares weighted average grant date fair value per share |  | Restricted stock shares converted from performance awards
Outstanding at December 31, 2020 |  | 131,724 |  |  | $ | 203.28 |  |  | 146,319 |
Granted - restricted stock shares |  | 96,834 |  |  | 177.49 |  |  | — |
Vested - restricted stock shares |  | (68,702) |  |  | 192.07 |  |  | (71,692) |
Forfeited |  | (3,077) |  |  | 193.47 |  |  | — |
Outstanding at September 30, 2021 |  | 156,779 |  |  | $ | 192.45 |  |  | 74,627 |

Total employee stock-based compensation cost recognized in income was $19,965,000 and $17,385,000 for the nine months ended September 30, 2021 and 2020, respectively, and total capitalized stock-based compensation cost was $6,899,000 and $8,291,000 for the nine months ended September 30, 2021 and 2020, respectively. At September 30, 2021, there was a total unrecognized compensation cost of $46,683,000 for unvested restricted stock, stock options and performance awards, which does not include forfeitures, and is expected to be recognized over a weighted average period of 1.9 years. Forfeitures are included in compensation cost as they occur.
10. Related Party Arrangements
Unconsolidated Entities
The Company manages unconsolidated real estate entities for which it receives asset management, property management, development and redevelopment fee revenue. From these entities, the Company earned fees of $695,000 and $1,017,000 for the three months ended September 30, 2021 and 2020, respectively, and $2,380,000 and $2,950,000 for the nine months ended September 30, 2021 and 2020, respectively. In addition, the Company had outstanding receivables associated with its property and construction management roles of $3,374,000 and $5,408,000 as of September 30, 2021 and December 31, 2020, respectively.
Director Compensation
The Company recorded non-employee director compensation expense relating to restricted stock grants and deferred stock units in the amount of $516,000 and $459,000 in the three months ended September 30, 2021 and 2020, respectively, and $1,457,000 and $1,360,000 in the nine months ended September 30, 2021 and 2020, respectively, as a component of general and administrative expense. Deferred compensation relating to these restricted stock grants and deferred stock units to non-employee directors was $1,119,000 and $614,000 on September 30, 2021 and December 31, 2020, respectively, reported as a component of prepaid expenses and other assets on the accompanying Condensed Consolidated Balance Sheets.
22

Table of Contents
11. Fair Value
Financial Instruments Carried at Fair Value
Derivative Financial Instruments
The Company uses interest rate swap and interest rate cap agreements to manage its interest rate risk. These instruments are carried at fair value in the Company's financial statements. In adjusting the fair value of its derivative contracts for the effect of counterparty nonperformance risk, the Company has considered the impact of its net position with a given counterparty, as well as any applicable credit enhancements, such as collateral postings, thresholds, mutual puts and guarantees. The Company minimizes its credit risk on these transactions by dealing with major, creditworthy financial institutions which have an A or better credit rating by the Standard & Poor's Ratings Group. As part of its on-going control procedures, the Company monitors the credit ratings of counterparties and the exposure of the Company to any single entity, thus reducing credit risk concentration. The Company believes the likelihood of realizing losses from counterparty nonperformance is remote. Although the Company has determined that the majority of the inputs used to value its derivatives fall within Level 2 of the fair value hierarchy, such as interest rate, term to maturity and volatility, the credit valuation adjustments associated with its derivatives use Level 3 inputs, such as estimates of current credit spreads, to evaluate the likelihood of default by itself and its counterparties. As of September 30, 2021, the Company assessed the significance of the impact of the credit valuation adjustments on the overall valuation of its derivative positions and has determined it is not significant. As a result, the Company has determined that its derivative valuations are classified in Level 2 of the fair value hierarchy.
The following table summarizes the consolidated derivative positions at September 30, 2021 (dollars in thousands):

| Non-designated Hedges | Cash Flow Hedges
| Interest Rate Caps | Interest Rate Swaps
Notional balance | $ | 410,950 | $ | 150,000
Weighted average interest rate (1) | 1.6 | % | N/A
Weighted average swapped/capped interest rate | 6.1 | % | 1.4 | %
Earliest maturity date | November 2021 | March 2022
Latest maturity date | July 2026 | March 2022

____________________________________
(1)For debt hedged by interest rate caps, represents the weighted average interest rate on the hedged debt prior to any impact of the associated interest rate caps.
The following derivative activity occurred during the nine months ended September 30, 2021:
•The Company terminated $150,000,000 of forward interest rate swap agreements for which hedge accounting was ceased in 2020, receiving a payment of $6,962,000. The Company recognized $2,894,000 of these proceeds as a gain in 2020, and $2,654,000 of these proceeds as a gain during the nine months ended September 30, 2021 included in interest expense, net on the accompanying Condensed Consolidated Statements of Comprehensive Income.
•In conjunction with the issuance of the Company's $700,000,000 2.050% unsecured notes due 2032 in September 2021, the Company settled $200,000,000 of forward interest rate swap agreements, entered into in 2021, designated as cash flow hedges of the interest rate variability on the issuance of the unsecured notes, making a net payment of $2,211,000. The Company has deferred these amounts in accumulated other comprehensive loss on the accompanying Condensed Consolidated Balance Sheets, and is recognizing the impact as a component of interest expense, net, over the term of the respective hedged debt.
•The Company entered into an additional $150,000,000 of new forward interest rate swap agreements executed to reduce the impact of variability in interest rates on a portion of the Company's expected debt issuance activity in 2022.
At the maturity of the remaining outstanding swap agreements, the Company expects to cash settle the contracts and either pay or receive cash for the then current fair value. Assuming that the Company issues the debt as expected, the hedging impact from these positions will then be recognized over the life of the issued debt as a yield adjustment.
The Company is party to five derivatives not designated as hedges at September 30, 2021 for which the fair value changes for the three and nine months ended September 30, 2021 and 2020 were not material.
23

Table of Contents
The following table summarizes the deferred losses reclassified from accumulated other comprehensive loss into earnings (dollars in thousands):

| For the three months ended |  | For the nine months ended
| 9/30/2021 |  | 9/30/2020 |  | 9/30/2021 |  | 9/30/2020
Cash flow hedge losses reclassified to earnings | $ | 7,405 |  |  | $ | 2,367 |  |  | $ | 12,138 |  |  | $ | 6,617 |

The Company anticipates reclassifying approximately $4,051,000 of net hedging losses from accumulated other comprehensive loss into earnings within the next 12 months as an offset to the hedged item during this period.
Redeemable Noncontrolling Interests
The Company issued units of limited partnership interest in a DownREIT which provides the DownREIT limited partners the ability to present all or some of their units for redemption for cash as determined by the partnership agreement. Under the DownREIT agreement, for each limited partnership unit, the limited partner is entitled to receive cash in the amount equal to the fair value of the Company's common stock on or about the date of redemption. In lieu of cash redemption, the Company may elect to exchange such units for an equal number of shares of the Company's common stock. The limited partnership units in the DownREIT are valued using the market price of the Company's common stock, a Level 1 price under the fair value hierarchy.
Financial Instruments Not Carried at Fair Value
Cash and Cash Equivalents
Cash and cash equivalent balances are held with various financial institutions within accounts designed to preserve principal. The Company monitors credit ratings of these financial institutions and the concentration of cash and cash equivalent balances with any one financial institution and believes the likelihood of realizing material losses related to cash and cash equivalent balances is remote. Cash and cash equivalents are carried at their face amounts, which reasonably approximate their fair values and are Level 1 within the fair value hierarchy.
Other Financial Instruments
Rents and other receivables and prepaid expenses, accounts and construction payable and accrued expenses and other liabilities are carried at their face amounts, which reasonably approximate their fair values.
Indebtedness
The Company values its fixed rate unsecured notes using quoted market prices, a Level 1 price within the fair value hierarchy. The Company values its mortgage notes payable, variable rate unsecured notes, Term Loans and outstanding amounts under the Credit Facility using a discounted cash flow analysis on the expected cash flows of each instrument. This analysis reflects the contractual terms of the instrument, including the period to maturity, and uses observable market-based inputs, including interest rate curves. The process also considers credit valuation adjustments to appropriately reflect the Company's nonperformance risk. The Company has concluded that the value of its mortgage notes payable, variable rate unsecured notes, Term Loans and outstanding amounts under the Credit Facility are Level 2 prices as the majority of the inputs used to value its positions fall within Level 2 of the fair value hierarchy.
24

Table of Contents
Financial Instruments Measured/Disclosed at Fair Value on a Recurring Basis
The following tables summarize the classification between the three levels of the fair value hierarchy of the Company's financial instruments measured/disclosed at fair value on a recurring basis (dollars in thousands):

|  | 9/30/2021
Description |  | Total Fair Value |  | Quoted Prices in Active Markets for Identical Asset (Level 1) |  | Significant Other Observable Inputs (Level 2) |  | Significant Unobservable Inputs (Level 3)
Non Designated Hedges |  |  |  |  |  |  |  |
Interest Rate Caps |  | $ | 121 |  |  | $ | — |  |  | $ | 121 |  |  | $ | — |
Interest Rate Swaps - Assets |  | 3,399 |  |  | — |  |  | 3,399 |  |  | — |
DownREIT units |  | (1,662) |  |  | (1,662) |  |  | — |  |  | — |
Indebtedness |  |  |  |  |  |  |  |
Fixed rate unsecured notes |  | (7,280,382) |  |  | (7,280,382) |  |  | — |  |  | — |
Mortgage notes payable, variable rate unsecured notes and Term Loans |  | (1,018,373) |  |  | — |  |  | (1,018,373) |  |  | — |
Total |  | $ | (8,296,897) |  |  | $ | (7,282,044) |  |  | $ | (1,014,853) |  |  | $ | — |

|  | 12/31/2020
Description |  | Total Fair Value |  | Quoted Prices in Active Markets for Identical Asset (Level 1) |  | Significant Other Observable Inputs (Level 2) |  | Significant Unobservable Inputs (Level 3)
Non Designated Hedges |  |  |  |  |  |  |  |
Interest Rate Caps |  | $ | 6 |  |  | $ | — |  |  | $ | 6 |  |  | $ | — |
Interest Rate Swaps - Assets |  | 4,308 |  |  | — |  |  | 4,308 |  |  | — |
DownREIT units |  | (1,203) |  |  | (1,203) |  |  | — |  |  | — |
Indebtedness |  |  |  |  |  |  |  |
Fixed rate unsecured notes |  | (7,271,799) |  |  | (7,271,799) |  |  | — |  |  | — |
Mortgage notes payable, variable rate unsecured notes and Term Loans |  | (1,043,976) |  |  | — |  |  | (1,043,976) |  |  | — |
Total |  | $ | (8,312,664) |  |  | $ | (7,273,002) |  |  | $ | (1,039,662) |  |  | $ | — |

12. Subsequent Events
The Company has evaluated subsequent events through the date on which this Form 10-Q was filed, the date on which these financial statements were issued, and identified the items below for discussion.
In October 2021, the Company acquired Curv located in Fort Lauderdale, FL, containing 243 apartment homes and 49,000 square feet of commercial space that is 100% leased to Whole Foods Market, for a purchase price of $150,000,000.
In October 2021, the Company sold 101,343 shares of common stock under CEP V at an average sales price of $225.85 per share, for net proceeds of $22,545,000.
In November 2021, the Company repaid an aggregate of $73,060,000 principal amount of fixed rate debt with a weighted average interest rate of 3.79% secured by Avalon Westbury at par in advance of the November 2036 maturity date.
As of November 4, 2021, the Company had $39,000,000 outstanding under the Credit Facility.
25

Table of Contents
ITEM 2. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS
Management's Discussion and Analysis of Financial Condition and Results of Operations ("MD&A") is intended to help provide an understanding of our business, financial condition and results of operations. This MD&A should be read in conjunction with our Condensed Consolidated Financial Statements and the accompanying Notes to Condensed Consolidated Financial Statements included elsewhere in this report. This report, including the following MD&A, contains forward-looking statements regarding future events or trends that should be read in conjunction with the factors described under "Forward-Looking Statements" included in this report. Actual results or developments could differ materially from those projected in such statements as a result of the factors described under "Forward-Looking Statements" as well as the risk factors described in Part I, Item 1A. "Risk Factors" of our Annual Report on Form 10-K for the year ended December 31, 2020 (the "Form 10-K") and in Part II, Item 1A. "Risk Factors" in this report.
Capitalized terms used without definition have the meanings provided elsewhere in this Form 10-Q.
Executive Overview
Business Description
We develop, redevelop, acquire, own and operate multifamily apartment communities in New England, the New York/New Jersey metro area, the Mid-Atlantic, the Pacific Northwest, and Northern and Southern California, as well as in our expansion markets of Raleigh-Durham and Charlotte, North Carolina, Southeast Florida, Dallas and Austin, Texas, and Denver, Colorado. We focus on leading metropolitan areas that we believe historically have been characterized by growing employment in high wage sectors of the economy, higher cost of home ownership and a diverse and vibrant quality of life. We believe these market characteristics have offered and will continue in the future to offer the opportunity for superior risk-adjusted returns over the long-term on apartment community investments relative to other markets that do not have these characteristics. We seek to create long-term shareholder value by accessing capital on cost effective terms; deploying that capital to develop, redevelop and acquire apartment communities in our selected markets; leveraging our scale and competencies in technology and data science to operate apartment communities; and selling communities when they no longer meet our long-term investment strategy or when pricing is attractive.
Our strategic vision is to be the leading apartment company in select U.S. markets, providing a range of distinctive living experiences that customers value. We pursue this vision by targeting what we believe are among the best markets and submarkets, leveraging our strategic capabilities in market research and consumer insight and being disciplined in our capital allocation and balance sheet management. Our communities are predominately upscale and generally command among the highest rents in their markets. However, we also pursue the ownership and operation of apartment communities that target a variety of customer segments and price points, consistent with our goal of offering a broad range of products and services. We regularly evaluate the market allocation of our investments by current market value and share of total revenue and NOI, as well as relative asset value and submarket positioning.
Third Quarter 2021 Operating Highlights
•Net income attributable to common stockholders for the three months ended September 30, 2021 was $78,914,000, a decrease of $68,789,000, or 46.6%, as compared to the prior year period. The decrease is primarily due to a decrease in gains on consolidated real estate dispositions, an increase in depreciation expense and loss on extinguishment of debt in the current year period, partially offset by an increase in NOI from our Development communities.
•Same Store NOI attributable to our apartment rental operations, including parking and other ancillary residential revenue ("Residential"), for the three months ended September 30, 2021 was $342,896,000, a decrease of $923,000, or 0.3%, from the prior year period. The decrease was due to an increase in Residential property operating expenses of $5,772,000, or 3.5%, over the prior year period, partially offset by an increase in Residential rental revenues of $5,067,000, or 1.0%, over the prior year period.
26

Table of Contents
COVID-19 Pandemic
We have taken various actions in response to the COVID-19 pandemic to adjust our business operations and to address the health and safety of our residents and associates. We adopted varying measures to help mitigate the financial impact on our residents, including providing flexible lease renewal options, creating payment plans for residents who are unable to pay their rent because they are impacted by COVID-19 and, in certain jurisdictions, waiving late fees and certain other customary fees associated with apartment rentals. To the extent still implemented, we may discontinue these measures at any time except where required by law.
The impact on our consolidated results of operations from COVID-19 for 2021 and periods beyond will depend, among other factors, on (i) the effect on the multifamily industry and the general economy of measures taken by businesses and the government to prevent the spread of the novel coronavirus and relieve economic distress of consumers, such as governmental limitations on the ability of multifamily owners to evict residents who are delinquent in the payment of their rent and (ii) the preferences of consumers and businesses for living and working arrangements both during and after the pandemic.
The COVID-19 pandemic continues to affect our rental operations, including revenues and expenses, as well as our collections and associated outstanding receivables. For further discussion see "Results of Operations." The following table presents the percentage of (i) apartment base rent charged to residents and (ii) other rentable items, such as parking and storage rent, along with pet and other fees in accordance with residential leases, that has been collected, including $14,128,000 of aggregate rent relief payments received under Emergency Rental Assistance Programs, of which $11,235,000 was received during the three months ended September 30, 2021, ("Collected Residential Revenue") for our 2021 Same Store communities for the three months ended June 30, 2020, September 30, 2020, December 31, 2020, March 31, 2021, June 30, 2021 and September 30, 2021 (unaudited). Collected Residential Revenue excludes transactional and other fees.

| At quarter end (1)(2) |  | At October 31, 2021 (3)(4)
Q2 2020 | 95.4% |  | 98.4%
Q3 2020 | 95.1% |  | 98.0%
Q4 2020 | 94.7% |  | 97.8%
Q1 2021 | 94.7% |  | 97.7%
Q2 2021 | 95.0% |  | 98.0%
Q3 2021 | 95.8% |  | 97.3%

_________________________
(1)Collections presented reflect our 2021 Same Store communities and exclude commercial revenue, which was 0.5% and 1.0% of our 2020 and 2019 Same Store total revenue, respectively.
(2)The Collected Residential Revenue percentage as of the last day in the respective quarter.
(3)The percentage of Collected Residential Revenue as of October 31, 2021.
(4)Collected Residential Revenue for October 2021 at October 31, 2021 was 94.0%.
The collection rates are based on resident activity as reflected in our property management systems and are presented to provide information about collections trends during the COVID-19 pandemic. Prior to the COVID-19 pandemic, the collections information provided was not routinely produced for internal use by senior management or publicly disclosed by the Company and is a result of analysis that is not subject to internal controls over financial reporting. This information is not prepared in accordance with GAAP, does not reflect GAAP revenue or cash flow metrics and may be subject to adjustment in preparing GAAP revenue and cash flow metrics. Additionally, this information should not be interpreted as predicting the Company’s financial performance, results of operations or liquidity for any period. At September 30, 2021, our outstanding rent receivable balance for residential and commercial tenants, net of reserves, remained consistent with December 31, 2020 at approximately $18,200,000.
Third Quarter 2021 Development Highlights
At September 30, 2021, we owned or held a direct or indirect interest in:
•15 wholly-owned communities under construction, which are expected to contain 4,645 apartment homes with a projected total capitalized cost of $1,863,000,000, and two unconsolidated communities under construction, which are expected to contain 803 apartment homes with a projected total capitalized cost of $386,000,000.
•Land or rights to land on which we expect to develop an additional 22 apartment communities that, if developed as expected, will contain 7,376 apartment homes and will be developed for an aggregate total capitalized cost of $3,019,000,000.
27

Table of Contents
Third Quarter 2021 Real Estate Transaction Highlights
During the three months ended September 30, 2021, we sold 17 residential condominiums at The Park Loggia for gross proceeds of $54,277,000, resulting in a gain in accordance with GAAP of $1,345,000.
During the three months ended September 30, 2021, we acquired three consolidated communities, marking our entry into the Dallas, TX and Charlotte, NC metropolitan regions:
•The Nexus Lakeside, located in Flower Mound, TX, which contains 425 apartment homes and 18,000 square feet of commercial space and was acquired for a purchase price of $117,000,000.
•Hub South End, located in Charlotte, NC, which contains 265 apartment homes and 23,000 square feet of commercial space and was acquired for a purchase price of $104,350,000.
•Three30Five, located in Charlotte, NC, which contains 164 apartment homes and was acquired for a purchase price of $52,650,000.
In October 2021, we acquired Curv located in Fort Lauderdale, FL, containing 243 apartment homes and 49,000 square feet of commercial space that is 100% leased to Whole Foods Market, for a purchase price of $150,000,000.
Communities Overview
Our real estate investments consist primarily of current operating apartment communities ("Current Communities"), consolidated and unconsolidated communities in various stages of development ("Development" communities and "Unconsolidated Development" communities) and Development Rights (as defined below). Our Current Communities are further classified as Same Store communities, Other Stabilized communities, Lease-Up communities, Redevelopment communities and Unconsolidated communities. While we generally establish the classification of communities on an annual basis, we update the classification of communities during the calendar year to the extent that our plans with regard to the disposition or redevelopment of a community change. The following is a description of each category:
Current Communities are categorized as Same Store, Other Stabilized, Lease-Up, Redevelopment, or Unconsolidated according to the following attributes:
•Same Store is composed of consolidated communities in the markets where we have a significant presence (New England, New York/New Jersey, Mid-Atlantic, Southeast Florida, Denver, Colorado, Pacific Northwest, and Northern and Southern California), and where a comparison of operating results from the prior year to the current year is meaningful, as these communities were owned and had stabilized occupancy as of the beginning of the respective prior year period. For the nine month periods ended September 30, 2021 and 2020, Same Store communities are consolidated for financial reporting purposes, had stabilized occupancy as of January 1, 2020, are not conducting or are not probable to conduct substantial redevelopment activities and are not held for sale as of September 30, 2021 or probable for disposition to unrelated third parties within the current year. A community is considered to have stabilized occupancy at the earlier of (i) attainment of 90% physical occupancy or (ii) the one-year anniversary of completion of development or redevelopment.
•Other Stabilized is composed of completed consolidated communities that we own, which have stabilized occupancy, as defined above, as of January 1, 2021, or which were acquired subsequent to January 1, 2020. Other Stabilized excludes communities that are conducting or are probable to conduct substantial redevelopment activities within the current year, as defined below.
•Lease-Up is composed of consolidated communities where construction has been complete for less than one year and that do not have stabilized occupancy.
•Redevelopment is composed of consolidated communities where substantial redevelopment is in progress or is probable to begin during the current year. Redevelopment is considered substantial when (i) capital invested during the reconstruction effort is expected to exceed the lesser of $5,000,000 or 10% of the community's pre-redevelopment basis and (ii) physical occupancy is below or is expected to be below 90% during, or as a result of, the redevelopment activity.
28

Table of Contents
•Unconsolidated is composed of communities that we have an indirect ownership interest in through our investment interest in an unconsolidated joint venture.
Development is composed of consolidated communities that are either currently under construction, or were under construction and were completed during the current year. These communities may be partially or fully complete and operating.
Unconsolidated Development is composed of communities that are either currently under construction, or were under construction and were completed during the current year, in which we have an indirect ownership interest through our investment interest in an unconsolidated joint venture. These communities may be partially or fully complete and operating.
Development Rights are development opportunities in the early phase of the development process where we either have an option to acquire land or enter into a leasehold interest, where we are the buyer under a long-term conditional contract to purchase land, where we control the land through a ground lease or own land to develop a new community, or where we are the designated developer in a public-private partnership. We capitalize related pre-development costs incurred in pursuit of new developments for which we currently believe future development is probable.
We currently lease our corporate headquarters located in Arlington, Virginia, as well as our other regional and administrative offices, under operating leases.
29

Table of Contents
As of September 30, 2021, communities that we owned or held a direct or indirect interest in were classified as follows:

|  | Number of communities |  | Number of apartment homes
Current Communities |  |  |  |
Same Store: |  |  |  |
New England |  | 37 |  |  | 9,536 |
Metro NY/NJ |  | 42 |  |  | 12,008 |
Mid-Atlantic |  | 39 |  |  | 13,645 |
Southeast Florida |  | 4 |  |  | 1,214 |
Denver, CO |  | 4 |  |  | 1,086 |
Pacific Northwest |  | 16 |  |  | 4,217 |
Northern California |  | 39 |  |  | 11,831 |
Southern California |  | 57 |  |  | 16,761 |
Total Same Store |  | 238 |  |  | 70,298 |
Other Stabilized: |  |  |  |
New England |  | 3 |  |  | 703 |
Metro NY/NJ |  | 4 |  |  | 1,742 |
Mid-Atlantic |  | 1 |  |  | 384 |
North Carolina |  | 2 |  |  | 429 |
Southeast Florida |  | — |  |  | — |
Texas |  | 1 |  |  | 425 |
Denver, CO |  | — |  |  | — |
Pacific Northwest |  | 3 |  |  | 1,012 |
Northern California |  | 1 |  |  | 289 |
Southern California |  | — |  |  | — |
Total Other Stabilized |  | 15 |  |  | 4,984 |
Lease-Up |  | 12 |  |  | 3,752 |
Redevelopment |  | 1 |  |  | 344 |
Unconsolidated |  | 10 |  |  | 2,590 |
Total Current |  | 276 |  |  | 81,968 |
Development |  | 15 |  |  | 4,645 |
Unconsolidated Development |  | 2 |  |  | 803 |
Total Communities |  | 293 |  |  | 87,416 |
Development Rights |  | 22 |  |  | 7,376 |

30

Table of Contents
Results of Operations
As discussed above under “Executive Overview - COVID-19 Pandemic” and elsewhere in this report, the COVID-19 pandemic continues to affect our business, and may continue to do so. See also Part II, Item 1A, “Risk Factors.” Our year-over-year operating performance is primarily affected by both overall and individual geographic market conditions and apartment fundamentals and is reflected in changes in Same Store NOI; NOI derived from acquisitions, development completions and development under construction and in lease-up; loss of NOI related to disposed communities; and capital market and financing activity. A comparison of our operating results for the three and nine months ended September 30, 2021 and 2020 follows (unaudited, dollars in thousands).

| For the three months ended |  | For the nine months ended
| 9/30/2021 |  | 9/30/2020 |  | $ Change |  | % Change |  | 9/30/2021 |  | 9/30/2020 |  | $ Change |  | % Change
Revenue: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Rental and other income | $ | 580,079 |  |  | $ | 566,387 |  |  | $ | 13,692 |  |  | 2.4 | % |  | $ | 1,691,273 |  |  | $ | 1,742,509 |  |  | $ | (51,236) |  |  | (2.9) | %
Management, development and other fees | 695 |  |  | 1,017 |  |  | (322) |  |  | (31.7) | % |  | 2,380 |  |  | 2,950 |  |  | (570) |  |  | (19.3) | %
Total revenue | 580,774 |  |  | 567,404 |  |  | 13,370 |  |  | 2.4 | % |  | 1,693,653 |  |  | 1,745,459 |  |  | (51,806) |  |  | (3.0) | %
Expenses: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Direct property operating expenses, excluding property taxes | 122,691 |  |  | 119,064 |  |  | 3,627 |  |  | 3.0 | % |  | 353,905 |  |  | 333,998 |  |  | 19,907 |  |  | 6.0 | %
Property taxes | 72,332 |  |  | 68,934 |  |  | 3,398 |  |  | 4.9 | % |  | 212,518 |  |  | 202,973 |  |  | 9,545 |  |  | 4.7 | %
Total community operating expenses | 195,023 |  |  | 187,998 |  |  | 7,025 |  |  | 3.7 | % |  | 566,423 |  |  | 536,971 |  |  | 29,452 |  |  | 5.5 | %
Corporate-level property management and other indirect operating expenses | (26,013) |  |  | (24,845) |  |  | (1,168) |  |  | 4.7 | % |  | (76,472) |  |  | (72,993) |  |  | (3,479) |  |  | 4.8 | %
Expensed transaction, development and other pursuit costs, net of recoveries | (417) |  |  | (567) |  |  | 150 |  |  | (26.5) | % |  | (1,900) |  |  | (4,289) |  |  | 2,389 |  |  | (55.7) | %
Interest expense, net | (55,987) |  |  | (53,249) |  |  | (2,738) |  |  | 5.1 | % |  | (164,704) |  |  | (162,562) |  |  | (2,142) |  |  | 1.3 | %
(Loss) gain on extinguishment of debt, net | (17,890) |  |  | 105 |  |  | (17,995) |  |  | N/A (1) |  | (17,768) |  |  | (9,333) |  |  | (8,435) |  |  | 90.4 | %
Depreciation expense | (193,791) |  |  | (175,348) |  |  | (18,443) |  |  | 10.5 | % |  | (561,560) |  |  | (529,508) |  |  | (32,052) |  |  | 6.1 | %
General and administrative expense | (17,313) |  |  | (13,985) |  |  | (3,328) |  |  | 23.8 | % |  | (53,130) |  |  | (46,878) |  |  | (6,252) |  |  | 13.3 | %
Casualty and impairment loss | (1,940) |  |  | — |  |  | (1,940) |  |  | 100.0 | % |  | (3,117) |  |  | — |  |  | (3,117) |  |  | 100.0 | %
Income from investments in unconsolidated entities | 6,867 |  |  | 5,083 |  |  | 1,784 |  |  | 35.1 | % |  | 32,959 |  |  | 6,770 |  |  | 26,189 |  |  | 386.8 | %
Gain on sale of communities | 58 |  |  | 31,607 |  |  | (31,549) |  |  | (99.8) | % |  | 388,354 |  |  | 91,338 |  |  | 297,016 |  |  | 325.2 | %
Gain on other real estate transactions, net | 1,543 |  |  | 129 |  |  | 1,414 |  |  | 1,096.1 | % |  | 2,002 |  |  | 328 |  |  | 1,674 |  |  | 510.4 | %
Net for-sale condominium activity | 158 |  |  | (646) |  |  | 804 |  |  | N/A (1) |  | (1,402) |  |  | 4,162 |  |  | (5,564) |  |  | N/A (1)
Income before income taxes | 81,026 |  |  | 147,690 |  |  | (66,664) |  |  | (45.1) | % |  | 670,492 |  |  | 485,523 |  |  | 184,969 |  |  | 38.1 | %
Income tax (expense) benefit | (2,179) |  |  | 27 |  |  | (2,206) |  |  | N/A (1) |  | (1,434) |  |  | 1,069 |  |  | (2,503) |  |  | N/A (1)
Net income | 78,847 |  |  | 147,717 |  |  | (68,870) |  |  | (46.6) | % |  | 669,058 |  |  | 486,592 |  |  | 182,466 |  |  | 37.5 | %
Net loss (income) attributable to noncontrolling interests | 67 |  |  | (14) |  |  | 81 |  |  | N/A (1) |  | 32 |  |  | (90) |  |  | 122 |  |  | N/A (1)
Net income attributable to common stockholders | $ | 78,914 |  |  | $ | 147,703 |  |  | $ | (68,789) |  |  | (46.6) | % |  | $ | 669,090 |  |  | $ | 486,502 |  |  | $ | 182,588 |  |  | 37.5 | %

_________________________
(1)Percent change is not meaningful.
Net income attributable to common stockholders decreased $68,789,000, or 46.6%, to $78,914,000 and increased $182,588,000, or 37.5%, to $669,090,000 for the three and nine months ended September 30, 2021 as compared to the prior year periods. The decrease for the three months ended September 30, 2021 is primarily due to a decrease in gains on consolidated real estate dispositions, an increase in depreciation expense and loss on extinguishment of debt in the current year period, partially offset by an increase in NOI from our Development communities. The increase for the nine months ended September 30, 2021 is primarily due to an increase in gains on consolidated and unconsolidated real estate dispositions in the current year period, partially offset by a decrease in Same Store NOI and an increase in depreciation expense in the current year period.
31

Table of Contents
NOI is considered by management to be an important and appropriate supplemental performance measure to net income because it helps both investors and management to understand the core operations of a community or communities prior to the allocation of any corporate-level or financing-related costs. NOI reflects the operating performance of a community and allows for an easier comparison of the operating performance of individual assets or groups of assets. In addition, because prospective buyers of real estate have different financing and overhead structures, with varying marginal impact to overhead as a result of acquiring real estate, NOI is considered by many in the real estate industry to be a useful measure for determining the value of a real estate asset or group of assets. We define NOI as total property revenue less direct property operating expenses (including property taxes), and excluding corporate-level income (including management, development and other fees), corporate-level property management and other indirect operating expenses, expensed transaction, development and other pursuit costs, net of recoveries, interest expense, net, loss (gain) on extinguishment of debt, net, general and administrative expense, income from investments in unconsolidated entities, depreciation expense, corporate income tax expense (benefit), casualty and impairment loss, gain on sale of communities, gain on other real estate transactions, net, net for-sale condominium activity and net operating income from real estate assets sold or held for sale.
NOI does not represent cash generated from operating activities in accordance with GAAP, and NOI should not be considered an alternative to net income as an indication of our performance. NOI should also not be considered an alternative to net cash flow from operating activities, as determined by GAAP, as a measure of liquidity, nor is NOI indicative of cash available to fund cash needs. Residential NOI represents results attributable to the Company's apartment rental operations, including parking and other ancillary residential revenue. Reconciliations of NOI and Residential NOI for the three and nine months ended September 30, 2021 and 2020 to net income for each period are as follows (unaudited, dollars in thousands):

| For the three months ended |  | For the nine months ended
| 9/30/2021 |  | 9/30/2020 |  | 9/30/2021 |  | 9/30/2020
Net income | $ | 78,847 |  |  | $ | 147,717 |  |  | $ | 669,058 |  |  | $ | 486,592 |
Property management and other indirect operating expenses, net of corporate income | 25,322 |  |  | 23,837 |  |  | 74,110 |  |  | 70,043 |
Expensed transaction, development and other pursuit costs, net of recoveries | 417 |  |  | 567 |  |  | 1,900 |  |  | 4,289 |
Interest expense, net | 55,987 |  |  | 53,249 |  |  | 164,704 |  |  | 162,562 |
Loss (gain) on extinguishment of debt, net | 17,890 |  |  | (105) |  |  | 17,768 |  |  | 9,333 |
General and administrative expense | 17,313 |  |  | 13,985 |  |  | 53,130 |  |  | 46,878 |
Income from investments in unconsolidated entities | (6,867) |  |  | (5,083) |  |  | (32,959) |  |  | (6,770) |
Depreciation expense | 193,791 |  |  | 175,348 |  |  | 561,560 |  |  | 529,508 |
Income tax expense (benefit) | 2,179 |  |  | (27) |  |  | 1,434 |  |  | (1,069) |
Casualty and impairment loss | 1,940 |  |  | — |  |  | 3,117 |  |  | — |
Gain on sale of communities | (58) |  |  | (31,607) |  |  | (388,354) |  |  | (91,338) |
Gain on other real estate transactions, net | (1,543) |  |  | (129) |  |  | (2,002) |  |  | (328) |
Net for-sale condominium activity | (158) |  |  | 646 |  |  | 1,402 |  |  | (4,162) |
Net operating income from real estate assets sold or held for sale | (2,373) |  |  | (14,686) |  |  | (17,393) |  |  | (47,798) |
NOI | 382,687 |  |  | 363,712 |  |  | 1,107,475 |  |  | 1,157,740 |
Commercial NOI (1) | (6,823) |  |  | (4,362) |  |  | (17,868) |  |  | (13,131) |
Residential NOI | $ | 375,864 |  |  | $ | 359,350 |  |  | $ | 1,089,607 |  |  | $ | 1,144,609 |

_________________________
(1)Represents results attributable to the non-apartment components of our mixed-use communities and other non-residential operations ("Commercial").
The Residential NOI changes for the three and nine months ended September 30, 2021, compared to the prior year periods, consist of changes in the following categories (unaudited, dollars in thousands):

| For the three months ended |  | For the nine months ended
| 9/30/2021 |  | 9/30/2021
Same Store | $ | (923) |  |  | $ | (89,197) |
Other Stabilized | 2,968 |  |  | 6,137 |
Development / Redevelopment | 14,469 |  |  | 28,058 |
Total | $ | 16,514 |  |  | $ | (55,002) |

32

Table of Contents
Rental and other income increased $13,692,000, or 2.4%, and decreased $51,236,000, or 2.9%, for the three and nine months ended September 30, 2021 compared to the prior year periods. The increase for the three months ended September 30, 2021 is primarily due to additional rental income generated from development completions and development under construction and in lease-up, as well as increased occupancy at our Same Store communities, partially offset by decreased rental rates. The decrease for the nine months ended September 30, 2021 is primarily due to decreased rental rates, amortization of concessions at our Same Store communities and decreased rental income from dispositions, partially offset by additional rental income generated from development completions and development under construction and in lease-up, as well as increased occupancy at our Same Store communities.
Results for the three and nine months ended September 30, 2021 were also impacted by uncollectible lease revenue.
•For the three months ended September 30, 2021, uncollectible lease revenue improved by $10,170,000, composed of $7,283,000 for Residential revenue and $2,887,000 for Commercial revenue, compared to the prior year period.
•For the nine months ended September 30, 2021, uncollectible lease revenue improved by $739,000, composed of a decrease of $6,599,000 for Commercial revenue, partially offset by an increase of $5,860,000 for Residential revenue, compared to the prior year period.
As a result of the pandemic, we increased our use of residential concessions during 2020 and the three and nine months ended September 30, 2021 relative to concessions granted prior to 2020. The increased concessions, which are amortized on a straight-line basis over the life of the respective leases (generally one year), contributed to the overall decline in our rental revenue during the three and nine months ended September 30, 2021 and will continue to impact rental revenue throughout 2021. The amortization of residential concessions for our consolidated communities increased by $10,474,000 and $41,268,000 in the three and nine months ended September 30, 2021, respectively, as compared to the prior year periods, and the remaining net unamortized balance of residential concessions as of September 30, 2021 was $26,802,000.
As discussed elsewhere in this report, the COVID-19 impact and related economic, regulatory and operating impacts are likely to continue to adversely affect our rental revenue. If job losses in our markets and nationally reoccur, this would likely decrease our ability to maintain and/or increase rents and/or maintain occupancy at our historical levels. Deteriorating financial conditions among our residents and commercial tenants, as well as regulations that limit our ability to evict residents and tenants, may continue to result in higher than normal uncollectible lease revenue. The pandemic may also continue to depress demand among consumers for our apartments for a variety of other reasons, including the following: consumers whose income has declined, who are working from home remotely or who cannot freely access neighborhood amenities like restaurants, gyms and entertainment venues, may decide during the pandemic to live in markets or submarkets that are less costly than ours; low interest rates that are caused by government response to the pandemic may encourage consumers who would otherwise rent to seek out home ownership; and various sources of demand for our apartments (e.g., students, corporate apartment homes, seasonal job-related demand as in the entertainment industry) may remain below pre-pandemic levels.
Consolidated Communities — The weighted average number of occupied apartment homes for consolidated communities decreased to 75,354 apartment homes for the nine months ended September 30, 2021, compared to 78,727 homes for the prior year period. The weighted average monthly rental revenue per occupied apartment home increased to $2,491 for the nine months ended September 30, 2021 compared to $2,456 in the prior year period.
Same Store rental revenue increased $6,599,000, or 1.3%, and decreased $65,514,000, or 4.1%, for the three and nine months ended September 30, 2021, compared to the prior year periods.
•Residential rental revenue increased $5,067,000, or 1.0%, and decreased $68,917,000, or 4.4%, for the three and nine months ended September 30, 2021, compared to the prior year periods. The increase for the three month ended September 30, 2021 was partially due to a reduction in uncollectible lease revenue of $7,369,000 and the decrease for the nine months ended September 30, 2021 was partially due to an increase in uncollectible lease revenue for $4,245,000. See below for a table detailing the change in Same Store Residential rental revenue by market for the nine months ended September 30, 2021, including the attribution of the change between rental rates and Economic Occupancy (as defined below).
•Commercial rental revenue increased $1,532,000, or 37.5%, and $3,403,000, or 29.2%, for the three and nine months ended September 30, 2021, compared to the prior year periods. The increase in Commercial revenue was due in part to a reduction in uncollectible lease revenue of $1,777,000 and $4,799,000, for the three and nine months ended September 30, 2021, respectively.
33

Table of Contents
The following table presents the change in Same Store Residential rental revenue for the three and nine months ended September 30, 2021, compared to the prior year periods (unaudited):

| For the three months ended |  | For the nine months ended
| 9/30/2021 |  | 9/30/2021
Residential rental revenue |  |  |
Lease rates | (1.8) | % |  | (3.2) | %
Concessions and other discounts | (1.8) | % |  | (2.3) | %
Economic Occupancy | 3.2 | % |  | 1.3 | %
Other rental revenue | — | % |  | 0.1 | %
Uncollectible lease revenue | 1.4 | % |  | (0.3) | %
Total Residential rental revenue | 1.0 | % |  | (4.4) | %

The following table presents the change in Same Store Residential rental revenue, including the attribution of the change between rental rates and Economic Occupancy for the nine months ended September 30, 2021 (unaudited).

| For the nine months ended September 30, 2021
| Residential rental revenue (000s) |  | Average rental rates |  | Economic Occupancy (1)
|  |  |  | $ Change | % Change |  |  |  |  | % Change |  |  | % Change
| 2021 |  | 2020 |  | 2021 to 2020 |  | 2021 to 2020 |  | 2021 |  | 2020 |  | 2021 to 2020 |  | 2021 |  | 2020 |  | 2021 to 2020
New England | $ | 224,173 |  |  | $ | 231,308 |  |  | $ | (7,135) |  |  | (3.1) | % |  | $ | 2,722 |  |  | $ | 2,861 |  |  | (4.9) | % |  | 96.0 | % |  | 94.2 | % |  | 1.8 | %
Metro NY/NJ | 315,285 |  |  | 323,011 |  |  | (7,726) |  |  | (2.4) | % |  | 3,031 |  |  | 3,158 |  |  | (4.0) | % |  | 96.2 | % |  | 94.6 | % |  | 1.6 | %
Mid-Atlantic | 249,693 |  |  | 259,575 |  |  | (9,882) |  |  | (3.8) | % |  | 2,138 |  |  | 2,242 |  |  | (4.6) | % |  | 95.1 | % |  | 94.3 | % |  | 0.8 | %
Southeast Florida | 23,055 |  |  | 21,771 |  |  | 1,284 |  |  | 5.9 | % |  | 2,191 |  |  | 2,151 |  |  | 1.9 | % |  | 96.3 | % |  | 92.3 | % |  | 4.0 | %
Denver, CO | 17,573 |  |  | 15,757 |  |  | 1,816 |  |  | 11.5 | % |  | 1,863 |  |  | 1,724 |  |  | 8.1 | % |  | 96.5 | % |  | 93.1 | % |  | 3.4 | %
Pacific Northwest | 78,513 |  |  | 82,525 |  |  | (4,012) |  |  | (4.9) | % |  | 2,167 |  |  | 2,278 |  |  | (4.9) | % |  | 95.5 | % |  | 95.5 | % |  | — | %
Northern California | 267,709 |  |  | 305,751 |  |  | (38,042) |  |  | (12.4) | % |  | 2,620 |  |  | 3,042 |  |  | (13.9) | % |  | 96.0 | % |  | 94.5 | % |  | 1.5 | %
Southern California | 328,242 |  |  | 333,462 |  |  | (5,220) |  |  | (1.6) | % |  | 2,252 |  |  | 2,314 |  |  | (2.7) | % |  | 96.6 | % |  | 95.5 | % |  | 1.1 | %
Total Same Store | $ | 1,504,243 |  |  | $ | 1,573,160 |  |  | $ | (68,917) |  |  | (4.4) | % |  | $ | 2,476 |  |  | $ | 2,627 |  |  | (5.7) | % |  | 96.0 | % |  | 94.7 | % |  | 1.3 | %

_________________________________
(1) Economic occupancy takes into account the fact that apartment homes of different sizes and locations within a community have different economic impacts on a community's gross revenue. Economic occupancy is defined as gross potential revenue less vacancy loss, as a percentage of gross potential revenue. Gross potential revenue is determined by valuing occupied homes at leased rates and vacant homes at market rents. Vacancy loss is determined by valuing vacant units at current market rents.
Direct property operating expenses, excluding property taxes, increased $3,627,000, or 3.0%, and $19,907,000, or 6.0%, for the three and nine months ended September 30, 2021, compared to the prior year periods. The increases for the three and nine months ended September 30, 2021 are primarily due to the addition of newly developed apartment communities, as well as the timing of repairs and maintenance projects previously delayed due to the COVID-19 pandemic.
Same Store Residential direct property operating expenses, excluding property taxes, represents 99.9% of total Same Store operating expenses for the three and nine months ended September 30, 2021. Residential direct property operating expenses, excluding property taxes, increased $3,175,000, or 3.0%, and $14,328,000, or 4.8%, for the three and nine months ended September 30, 2021 compared to the prior year periods. The increases for the three and nine months ended September 30, 2021 are primarily due to the timing of repairs and maintenance projects previously delayed due to the COVID-19 pandemic.
34

Table of Contents
Property taxes increased $3,398,000, or 4.9%, and $9,545,000, or 4.7%, for the three and nine months ended September 30, 2021, compared to the prior year periods. The increases for the three and nine months ended September 30, 2021 are primarily due to the addition of newly developed apartment communities and increased assessments for the Company's stabilized portfolio, partially offset by decreased property taxes from dispositions.
Same Store Residential property taxes represents 98.8% of total Same Store property taxes for the three and nine months ended September 30, 2021. Residential property taxes increased $2,597,000, or 4.3%, and $5,480,000, or 3.1%, for the three and nine months ended September 30, 2021, compared to the prior year periods. The increases for the three and nine months ended September 30, 2021 are primarily due to increased assessments across the portfolio and the expiration of certain property tax incentive programs in New York City in the current year periods.
Corporate-level property management and other indirect operating expenses increased $1,168,000, or 4.7%, and $3,479,000, or 4.8%, for the three and nine months ended September 30, 2021, compared to the prior year periods, primarily due to increased compensation related costs and costs related to an increased investment in technology initiatives to improve efficiency in services for resident and prospects in the current year periods.
Expensed transaction, development and other pursuit costs, net of recoveries primarily reflect costs incurred for development pursuits not yet considered probable for development, as well as the abandonment of Development Rights and costs related to abandoned acquisition and disposition pursuits and any recoveries of costs incurred. These costs can be volatile, particularly in periods of increased acquisition pursuit activity, periods of economic downturn or when there is limited access to capital, and therefore may vary significantly from year to year. In addition, the timing for recoveries will not always align with the timing for expensing an abandoned pursuit. Expensed transaction, development and other pursuit costs, net of recoveries, decreased $150,000, or 26.5%, and $2,389,000, or 55.7%, for the three and nine months ended September 30, 2021 as compared to the prior year periods.
Interest expense, net increased $2,738,000, or 5.1%, and $2,142,000, or 1.3%, for the three and nine months ended September 30, 2021, compared to the prior year periods. This category includes interest costs offset by capitalized interest pertaining to development and redevelopment activity, amortization of premium/discount on debt, interest income and any mark to market impact from derivatives not in qualifying hedge relationships. The increases for the three and nine months ended September 30, 2021 were primarily due to a decrease in capitalized interest and an increase in the amount of unsecured indebtedness, partially offset by lower overall effective rates on unsecured indebtedness and a combination of a decrease in variable rates on, and amounts of, secured indebtedness.
Loss (gain) on extinguishment of debt, net reflects prepayment penalties, the write-off of unamortized deferred financing costs, premiums/discounts and deferred hedging losses, from our debt repurchase and retirement activity, or payments to acquire our outstanding debt at amounts above or below the carrying basis of the debt acquired. The losses of $17,890,000 and $17,768,000 for the three and nine months ended September 30, 2021, respectively, and $9,333,000 for the nine months ended September 30, 2020, were due to the repayments of unsecured debt during the periods.
Depreciation expense increased $18,443,000, or 10.5%, and $32,052,000, or 6.1%, for the three and nine months ended September 30, 2021, as compared to the prior year periods, primarily due to depreciation at a portion of a current operating community that will be taken out of service in conjunction with the development of an adjacent apartment community and the addition of newly developed and acquired apartment communities, partially offset by dispositions.
General and administrative expense (“G&A”) increased $3,328,000, or 23.8%, and $6,252,000, or 13.3%, for the three and nine months ended September 30, 2021, as compared to the prior year periods, primarily due to increases in compensation related expenses, including executive transition costs, in the current year periods.
Casualty and impairment loss for the three and nine months ended September 30, 2021 of $1,940,000 and $3,117,000, consists of a $1,971,000 charge recognized for the damages across several communities in our East Coast markets related to severe storms. The loss for the nine months ended September 30, 2021, also consists of a $1,146,000 charge recognized for the property and casualty damages resulting from a fire at an operating community.
Income from investments in unconsolidated entities increased $1,784,000 and $26,189,000 for the three and nine months ended September 30, 2021, as compared to the prior year periods, due to unrealized gains on property technology investments recognized in the current year periods, partially offset by the gain on the sale of a community in Archstone Multifamily Partners AC LP (the "U.S. Fund") in the prior year periods. The increase for the nine months ended September 30, 2021 was also due to the gain on the sale of the final two communities in Archstone Multifamily Partners AC JV LP (the "AC JV").
35

Table of Contents
Gain on sale of communities decreased by $31,549,000 and increased by $297,016,000 for the three and nine months ended September 30, 2021, compared to the prior year periods. The amount of gain realized in a given period depends on many factors, including the number of communities sold, the size and carrying value of the communities sold and the market conditions in the local area.
Net for-sale condominium activity is a net gain of $158,000 and net expense of $1,402,000 for the three and nine months ended September 30, 2021 and a net expense of $646,000 and net gain of $4,162,000 for the three and nine months ended September 30, 2020, and is comprised of the net gain before taxes on the sale of condominiums at The Park Loggia and associated marketing, operating and administrative costs. During the three and nine months ended September 30, 2021, we sold 17 and 43 residential condominiums at The Park Loggia, for gross proceeds of $54,277,000 and $107,278,000, resulting in gains in accordance with GAAP of $1,345,000 and $2,051,000, respectively. During the three and nine months ended September 30, 2020, we sold seven and 59 residential condominiums at The Park Loggia for gross proceeds of $15,699,000 and $182,512,000, resulting in gains in accordance with GAAP of $727,000 and $8,174,000, respectively. In addition, we incurred $1,187,000 and $1,373,000 for the three months ended September 30, 2021 and 2020, respectively, and $3,453,000 and $4,012,000 for the nine months ended September 30, 2021 and 2020, respectively, in marketing, operating and administrative costs.
Reconciliation of Non-GAAP Financial Measures
Consistent with the definition adopted by the Board of Governors of the National Association of Real Estate Investment Trusts® ("Nareit"), we calculate Funds from Operations Attributable to Common Stockholders ("FFO") as net income or loss attributable to common stockholders computed in accordance with GAAP, adjusted for:
•gains or losses on sales of previously depreciated operating communities;
•cumulative effect of change in accounting principle;
•impairment write-downs of depreciable real estate assets;
•write-downs of investments in affiliates due to a decrease in the value of depreciable real estate assets held by those affiliates;
•depreciation of real estate assets; and
•similar adjustments for unconsolidated partnerships and joint ventures, including those from a change in control.
FFO and FFO adjusted for non-core items, or "Core FFO," as defined below, are generally considered by management to be appropriate supplemental measures of our operating and financial performance. In calculating FFO, we exclude gains or losses related to dispositions of previously depreciated property and exclude real estate depreciation, which can vary among owners of identical assets in similar condition based on historical cost accounting and useful life estimates. FFO can help one compare the operating performance of a real estate company between periods or as compared to different companies. By further adjusting for items that are not considered by us to be part of our core business operations, Core FFO allows one to compare the core operating performance of the Company between periods. We believe that in order to understand our operating results, FFO and Core FFO should be examined with net income as presented in our Condensed Consolidated Financial Statements included elsewhere in this report.
We calculate Core FFO as FFO, adjusted for:
•joint venture gains (if not adjusted through FFO), non-core costs and promoted interests from partnerships;
•casualty and impairment losses or gains, net on non-depreciable real estate;
•gains or losses from early extinguishment of consolidated borrowings;
•development pursuit write-offs and expensed transaction costs, net of recoveries;
•third-party business interruption insurance proceeds and the related lost NOI that is covered by the expected third party business interruption insurance proceeds;
•property and casualty insurance proceeds and legal settlement activity;
•gains or losses on sales of assets not subject to depreciation and other investment gains or losses;
•advocacy contributions, representing payments to promote our business interests;
•hedge ineffectiveness or gains or losses from derivatives not designated as hedges for accounting purposes;
•severance related costs;
•executive transition compensation costs;
•net for-sale condominium activity, including gains, marketing, operating and administrative costs and imputed carry cost;
•income taxes; and
•other non-core items.
36

Table of Contents
FFO and Core FFO do not represent net income in accordance with GAAP, and therefore should not be considered an alternative to net income, which remains the primary measure, as an indication of our performance. In addition, FFO and Core FFO as calculated by other REITs may not be comparable to our calculations of FFO and Core FFO.
The following is a reconciliation of net income attributable to common stockholders to FFO attributable to common stockholders and to Core FFO attributable to common stockholders (unaudited, dollars in thousands, except per share amounts):

| For the three months ended |  | For the nine months ended
| 9/30/2021 |  | 9/30/2020 |  | 9/30/2021 |  | 9/30/2020
Net income attributable to common stockholders | $ | 78,914 |  |  | $ | 147,703 |  |  | $ | 669,090 |  |  | $ | 486,502 |
Depreciation - real estate assets, including joint venture adjustments | 192,435 |  |  | 174,505 |  |  | 558,006 |  |  | 527,491 |
Distributions to noncontrolling interests | 12 |  |  | 12 |  |  | 36 |  |  | 36 |
Gain on sale of unconsolidated entities holding previously depreciated real estate | — |  |  | (5,157) |  |  | (23,305) |  |  | (5,157) |
Gain on sale of previously depreciated real estate | (58) |  |  | (31,607) |  |  | (388,354) |  |  | (91,338) |
Casualty and impairment loss on real estate | 1,940 |  |  | — |  |  | 3,117 |  |  | — |
FFO attributable to common stockholders | 273,243 |  |  | 285,456 |  |  | 818,590 |  |  | 917,534 |
Adjusting items: |  |  |  |  |  |  |
Unconsolidated entity (gains) losses, net (1) | (6,924) |  |  | 86 |  |  | (9,056) |  |  | 86 |
Business interruption insurance proceeds | — |  |  | (282) |  |  | — |  |  | (385) |
Lost NOI from casualty losses covered by business interruption insurance | — |  |  | — |  |  | — |  |  | 48 |
Loss (gain) on extinguishment of consolidated debt | 17,890 |  |  | (105) |  |  | 17,768 |  |  | 9,333 |
Gain on interest rate contract | — |  |  | — |  |  | (2,654) |  |  | — |
Advocacy contributions | — |  |  | 1,308 |  |  | — |  |  | 3,074 |
Executive transition compensation costs | 411 |  |  | — |  |  | 2,599 |  |  | — |
Severance related costs | 284 |  |  | 75 |  |  | 386 |  |  | 2,115 |
Development pursuit write-offs and expensed transaction costs, net of recoveries | 273 |  |  | 147 |  |  | 575 |  |  | 3,536 |
Gain on for-sale condominiums (2) | (1,345) |  |  | (727) |  |  | (2,051) |  |  | (8,174) |
For-sale condominium marketing, operating and administrative costs (2) | 1,187 |  |  | 1,373 |  |  | 3,453 |  |  | 4,012 |
For-sale condominium imputed carry cost (3) | 1,648 |  |  | 2,580 |  |  | 5,779 |  |  | 9,013 |
Gain on other real estate transactions, net | (1,543) |  |  | (129) |  |  | (2,002) |  |  | (328) |
Legal settlements | 22 |  |  | 59 |  |  | 1,100 |  |  | 35 |
Income tax expense (benefit) | 2,179 |  |  | (27) |  |  | 1,434 |  |  | (1,069) |
Core FFO attributable to common stockholders | $ | 287,325 |  |  | $ | 289,814 |  |  | $ | 835,921 |  |  | $ | 938,830 |
Weighted average common shares outstanding - diluted | 139,737,725 |  |  | 140,603,722 |  |  | 139,645,069 |  |  | 140,702,803 |
EPS per common share - diluted | $ | 0.56 |  |  | $ | 1.05 |  |  | $ | 4.79 |  |  | $ | 3.46 |
FFO per common share - diluted | $ | 1.96 |  |  | $ | 2.03 |  |  | $ | 5.86 |  |  | $ | 6.52 |
Core FFO per common share - diluted | $ | 2.06 |  |  | $ | 2.06 |  |  | $ | 5.99 |  |  | $ | 6.67 |

_________________________
(1)Amounts for the three and nine months ended September 30, 2021 include unrealized gains on property technology investments of $6,924 and $10,094, respectively. The amount for the nine months ended September 30, 2021 is partially offset by the write-off of asset management fee intangibles associated with the disposition of the final two AC JV communities.
(2)The aggregate impact of (i) gain on for-sale condominiums and (ii) for-sale condominium marketing, operating and administrative costs is a net expense of $158 and $1,402 for the three and nine months ended September 30, 2021 and a net expense of $646 and net gain of $4,162 for the three and nine months ended September 30, 2020.
(3)Represents the imputed carry cost of for-sale residential condominiums at The Park Loggia. We computed this adjustment by multiplying the total capitalized cost of completed and unsold for-sale residential condominiums by our weighted average unsecured debt rate.
37

Table of Contents
FFO and Core FFO also do not represent cash generated from operating activities in accordance with GAAP, and therefore should not be considered an alternative to net cash flows from operating activities, as determined by GAAP, as a measure of liquidity. Additionally, it is not necessarily indicative of cash available to fund cash needs.
A presentation of GAAP based cash flow metrics is as follows (unaudited, dollars in thousands) and a discussion of "Liquidity and Capital Resources" can be found later in this report:

| For the three months ended |  | For the nine months ended
| 9/30/2021 |  | 9/30/2020 |  | 9/30/2021 |  | 9/30/2020
Net cash provided by operating activities | $ | 343,113 |  |  | $ | 333,157 |  |  | $ | 911,742 |  |  | $ | 962,074 |
Net cash used in investing activities | $ | (404,958) |  |  | $ | (136,195) |  |  | $ | (315,753) |  |  | $ | (321,323) |
Net cash provided by (used in) financing activities | $ | 10,590 |  |  | $ | (430,256) |  |  | $ | (473,671) |  |  | $ | (585,965) |

Liquidity and Capital Resources
We employ a disciplined approach to our liquidity and capital management. When we source capital, we take into account both our view of the most cost effective alternative available and our desire to maintain a balance sheet that provides us with flexibility. Our principal focus on near-term and intermediate-term liquidity is to ensure we have adequate capital to fund:
•development and redevelopment activity in which we are currently engaged or in which we plan to engage;
•the minimum dividend payments on our common stock required to maintain our REIT qualification under the Code;
•debt service and principal payments either at maturity or opportunistically before maturity;
•normal recurring operating expenses and corporate overhead expenses; and
•investment in our operating platform, including strategic investments.
Factors affecting our liquidity and capital resources are our cash flows from operations, financing activities and investing activities (including dispositions) as well as general economic and market conditions. Cash flows from operations are determined by operating activities and factors including but not limited to (i) the number of apartment homes currently owned, (ii) rental rates, (iii) occupancy levels, (iv) uncollectible lease revenue levels or interruptions in collections caused by market conditions and (v) operating expenses with respect to apartment homes. The timing and type of capital markets activity in which we engage is affected by changes in the capital markets environment, such as changes in interest rates or the availability of cost-effective capital. Our plans for development, redevelopment, non-routine capital expenditure, acquisition and disposition activity are affected by market conditions and capital availability. We frequently review our liquidity needs, especially in periods with volatile market conditions, as well as the adequacy of cash flows from operations and other expected liquidity sources to meet these needs.
We had cash, cash equivalents and cash in escrow of $435,850,000 at September 30, 2021, an increase of $122,318,000 from $313,532,000 at December 31, 2020. The following discussion relates to changes in cash, cash equivalents and cash in escrow due to operating, investing and financing activities, which are presented in our Condensed Consolidated Statements of Cash Flows included elsewhere in this report.
Operating Activities — Net cash provided by operating activities decreased to $911,742,000 for the nine months ended September 30, 2021 from $962,074,000 for the nine months ended September 30, 2020, primarily due to decreases in rental income, including the impact of uncollectible lease revenue.
Investing Activities — Net cash used in investing activities totaled $315,753,000 for the nine months ended September 30, 2021. The net cash used was primarily due to:
•investment of $476,307,000 in the development and redevelopment of communities;
•acquisition of four operating communities for $392,746,000; and
•capital expenditures of $110,310,000 for our operating communities and non-real estate assets.
These amounts were partially offset by:
•net proceeds from the disposition of six operating communities and ancillary real estate of $576,973,000; and
•net proceeds from the sale of for-sale residential condominiums of $98,752,000.
38

Table of Contents
Financing Activities — Net cash used in financing activities totaled $473,671,000 for the nine months ended September 30, 2021. The net cash used was primarily due to:
•payment of cash dividends in the amount of $666,420,000;
•repayment of unsecured notes in the amount of $462,147,000; and
•mortgage note repayments and principal amortization payments in the amount of $35,688,000.
The amounts were partially offset by:
•proceeds from the issuance of unsecured notes in the amount of $699,167,000; and
•the issuance of common stock in the amount of $7,011,000, primarily through CEP V.
Variable Rate Unsecured Credit Facility
We have a $1,750,000,000 revolving variable rate unsecured credit facility with a syndicate of banks (the “Credit Facility”) which matures in February 2024. The Credit Facility bears interest at varying levels based on (i) the London Interbank Offered Rate (“LIBOR”) applicable to the period of borrowing for a particular draw of funds from the facility (e.g., one month to maturity, three months to maturity, etc.) and (ii) the rating levels issued for our unsecured notes. The current stated pricing for drawn borrowings is LIBOR plus 0.775% per annum (0.86% at October 29, 2021), assuming a one month borrowing rate. The annual facility fee for the Credit Facility remained at 0.125%, resulting in a fee of $2,188,000 annually based on the $1,750,000,000 facility size and based on our current credit rating.
We had $44,000,000 outstanding under the Credit Facility and had $12,599,000 outstanding in letters of credit that reduced our borrowing capacity as of October 29, 2021. In addition, we had $37,596,000 outstanding in additional letters of credit unrelated to the Credit Facility as of October 29, 2021.
Financial Covenants
We are subject to financial covenants contained in the Credit Facility, Term Loans and the indentures under which our unsecured notes were issued. The principal financial covenants include the following:
•limitations on the amount of total and secured debt in relation to our overall capital structure;
•limitations on the amount of our unsecured debt relative to the undepreciated basis of real estate assets that are not encumbered by property-specific financing; and
•minimum levels of debt service coverage.
We were in compliance with these covenants at September 30, 2021.
In addition, some of our secured borrowings include yield maintenance, defeasance, or prepayment penalty provisions, which would result in us incurring an additional charge in the event of a full or partial prepayment of outstanding principal before the scheduled maturity. These provisions in our secured borrowings are generally consistent with other similar types of debt instruments issued during the same time period in which our borrowings were secured.
39

Table of Contents
Continuous Equity Offering Program
In May 2019, we commenced our fifth continuous equity program ("CEP V") under which we may sell (and/or enter into forward sale agreements for the sale of) up to $1,000,000,000 of our common stock from time to time. Actual sales will depend on a variety of factors to be determined, including market conditions, the trading price of our common stock and determinations of the appropriate sources of funding. In conjunction with CEP V, we engaged sales agents who will receive compensation of up to 1.5% of the gross sales price for shares sold. We expect that, if entered into, we will physically settle each forward sale agreement on one or more dates prior to the maturity date of that particular forward sale agreement, in which case we will expect to receive aggregate net cash proceeds at settlement equal to the number of shares underlying the particular forward agreement multiplied by the relevant forward sale price. However, we may also elect to cash settle or net share settle a forward sale agreement. In connection with each forward sale agreement, we will pay the relevant forward seller, in the form of a reduced initial forward sale price, a commission of up to 1.5% of the sales prices of all borrowed shares of common stock sold. During the three and nine months ended September 30, 2021, we sold 21,000 shares of common stock at an average sales price of $227.60 per share, for net proceeds of $4,708,000 under this program. During October 2021, we sold 101,343 shares of common stock at an average sales price of $225.85, for net proceeds of $22,545,000 under this program. As of October 29, 2021, we had $725,210,000 remaining authorized for issuance under this program.
Forward Interest Rate Swap Agreements
The following derivative activity occurred during the nine months ended September 30, 2021:
•We terminated $150,000,000 of forward interest rate swap agreements for which hedge accounting was ceased in 2020, receiving a payment of $6,962,000. We recognized $2,894,000 of these proceeds as a gain in 2020, and $2,654,000 of these proceeds as a gain during the nine months ended September 30, 2021, included in interest expense, net on the accompanying Condensed Consolidated Statements of Comprehensive Income.
•In conjunction with the issuance of our $700,000,000 2.050% unsecured notes due 2032 in September 2021, we settled $200,000,000 of forward interest rate swap agreements, entered into in 2021, designated as cash flow hedges of the interest rate variability on the issuance of the unsecured notes, making a net payment of $2,211,000. We have deferred these amounts in accumulated other comprehensive loss on the accompanying Condensed Consolidated Balance Sheets, and are recognizing the impact as a component of interest expense, net, over the term of the respective hedged debt.
•We entered into an additional $150,000,000 of new forward interest rate swap agreements executed to reduce the impact of variability in interest rates on a portion of our expected debt issuance activity in 2022.
At the maturity of the remaining outstanding swap agreements, we expect to cash settle the contracts and either pay or receive cash for the then current fair value. Assuming that we issue the debt as expected, the hedging impact from these positions will then be recognized over the life of the issued debt as a yield adjustment.
Stock Repurchase Program
In July 2020, our Board of Directors voted to terminate our prior $500,000,000 Stock Repurchase Program (the "Amended 2005 Stock Repurchase Program") and approved a new stock repurchase program under which we may acquire shares of our common stock in open market or negotiated transactions up to an aggregate purchase price of $500,000,000 (the "2020 Stock Repurchase Program"). Purchases of common stock under the 2020 Stock Repurchase Program may be exercised from time to time in our discretion and in such amounts as market conditions warrant. The timing and actual number of shares repurchased will depend on a variety of factors including price, corporate and regulatory requirements, market conditions and other corporate liquidity requirements and priorities. The 2020 Stock Repurchase Program does not have an expiration date and may be suspended or terminated at any time without prior notice. During the nine months ended September 30, 2021 and through October 29, 2021, we had no repurchases of shares under this program. As of October 29, 2021, we had $316,148,000 remaining authorized for purchase under this program.
40

Table of Contents
Future Financing and Capital Needs — Debt Maturities
One of our principal long-term liquidity needs is the repayment of long-term debt at maturity. For both our unsecured and secured notes, a portion of the principal of these notes may be repaid prior to maturity. Early retirement of our unsecured or secured notes could result in gains or losses on extinguishment. If we do not have funds on hand sufficient to repay our indebtedness as it becomes due, it will be necessary for us to refinance or otherwise provide liquidity to satisfy the debt at maturity. This refinancing may be accomplished by uncollateralized private or public debt offerings, equity issuances, additional debt financing that is secured by mortgages on individual communities or groups of communities or borrowings under our Credit Facility. Although we believe we will have the capacity to meet our currently anticipated liquidity needs, we cannot assure you that capital from additional debt financing or debt or equity offerings will be available or, if available, that they will be on terms we consider satisfactory, especially in light of the uncertain impacts of the COVID-19 pandemic on capital markets.
The following debt activity occurred during the nine months ended September 30, 2021:
•In January 2021, we repaid $27,795,000 principal amount of 5.37% fixed rate debt secured by Avalon San Bruno II at par in advance of the April 2021 maturity date.
•In September 2021, we repaid $450,000,000 principal amount of our 2.95% unsecured notes in advance of the September 2022 scheduled maturity, recognizing a loss on debt extinguishment of $17,890,000, composed of a prepayment penalty of $12,147,000, and the non-cash write off of unamortized deferred hedging losses and unamortized deferred financing costs of $5,743,000.
•In September 2021, we issued $700,000,000 principal amount of unsecured notes in a public offering under our existing shelf registration statement for proceeds net of underwriting fees of approximately $694,617,000, before considering the impact of other offering costs. The notes mature in January 2032 and were issued at a 2.050% interest rate. The notes were issued under our green bond framework, and we have allocated or will allocate the net proceeds, in whole or in part, to one or more new or existing eligible green projects.
In November 2021, we repaid an aggregate of $73,060,000 principal amount of fixed rate debt with a weighted average interest rate of 3.79% secured by Avalon Westbury at par in advance of the November 2036 maturity date.
The following table details our consolidated debt maturities for the next five years, excluding our Credit Facility and amounts outstanding related to communities classified as held for sale, for debt outstanding at September 30, 2021 and December 31, 2020 (dollars in thousands). We are not directly or indirectly (as borrower or guarantor) obligated in any material respect to pay principal or interest on the indebtedness of any unconsolidated entities in which we have an equity or other interest.
41

Table of Contents

|  | All-In interest rate (1) |  | Principal maturity date |  | Balance Outstanding (2) |  | Scheduled Maturities
Community |  |  |  | 12/31/2020 |  | 9/30/2021 |  | 2021 |  | 2022 |  | 2023 |  | 2024 |  | 2025 |  | Thereafter
Tax-exempt bonds |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fixed rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Avalon at Chestnut Hill |  | 6.16 | % |  | Oct-2047 |  | $ | 36,399 |  |  | $ | 35,930 |  |  | $ | 160 |  |  | $ | 663 |  |  | $ | 699 |  |  | $ | 737 |  |  | $ | 778 |  |  | $ | 32,893 |
Avalon Westbury |  | 3.86 | % |  | Nov-2036 | (3) | 62,200 |  |  | 62,200 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 62,200 |
|  |  |  |  |  | 98,599 |  |  | 98,130 |  |  | 160 |  |  | 663 |  |  | 699 |  |  | 737 |  |  | 778 |  |  | 95,093 |
Variable rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Avalon Acton |  | 1.09 | % |  | Jul-2040 | (4) | 45,000 |  |  | 45,000 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 45,000 |
Avalon Clinton North |  | 1.74 | % |  | Nov-2038 | (4) | 147,000 |  |  | 147,000 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 147,000 |
Avalon Clinton South |  | 1.74 | % |  | Nov-2038 | (4) | 121,500 |  |  | 121,500 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 121,500 |
Avalon Midtown West |  | 1.67 | % |  | May-2029 | (4) | 93,500 |  |  | 88,300 |  |  | — |  |  | 5,600 |  |  | 6,100 |  |  | 6,800 |  |  | 7,300 |  |  | 62,500 |
Avalon San Bruno I |  | 1.63 | % |  | Dec-2037 | (4) | 63,850 |  |  | 62,850 |  |  | 900 |  |  | 2,000 |  |  | 2,200 |  |  | 2,300 |  |  | 2,400 |  |  | 53,050 |
|  |  |  |  |  | 470,850 |  |  | 464,650 |  |  | 900 |  |  | 7,600 |  |  | 8,300 |  |  | 9,100 |  |  | 9,700 |  |  | 429,050 |
Conventional loans |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fixed rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
$450 million unsecured notes |  | 4.30 | % |  | Sep-2022 | (5) | 450,000 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
$250 million unsecured notes |  | 3.00 | % |  | Mar-2023 |  | 250,000 |  |  | 250,000 |  |  | — |  |  | — |  |  | 250,000 |  |  | — |  |  | — |  |  | — |
$350 million unsecured notes |  | 4.30 | % |  | Dec-2023 |  | 350,000 |  |  | 350,000 |  |  | — |  |  | — |  |  | 350,000 |  |  | — |  |  | — |  |  | — |
$300 million unsecured notes |  | 3.66 | % |  | Nov-2024 |  | 300,000 |  |  | 300,000 |  |  | — |  |  | — |  |  | — |  |  | 300,000 |  |  | — |  |  | — |
$525 million unsecured notes |  | 3.55 | % |  | Jun-2025 |  | 525,000 |  |  | 525,000 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 525,000 |  |  | — |
$300 million unsecured notes |  | 3.62 | % |  | Nov-2025 |  | 300,000 |  |  | 300,000 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 300,000 |  |  | — |
$475 million unsecured notes |  | 3.35 | % |  | May-2026 |  | 475,000 |  |  | 475,000 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 475,000 |
$300 million unsecured notes |  | 3.01 | % |  | Oct-2026 |  | 300,000 |  |  | 300,000 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 300,000 |
$350 million unsecured notes |  | 3.95 | % |  | Oct-2046 |  | 350,000 |  |  | 350,000 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 350,000 |
$400 million unsecured notes |  | 3.50 | % |  | May-2027 |  | 400,000 |  |  | 400,000 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 400,000 |
$300 million unsecured notes |  | 4.09 | % |  | Jul-2047 |  | 300,000 |  |  | 300,000 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 300,000 |
$450 million unsecured notes |  | 3.32 | % |  | Jan-2028 |  | 450,000 |  |  | 450,000 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 450,000 |
$300 million unsecured notes |  | 3.97 | % |  | Apr-2048 |  | 300,000 |  |  | 300,000 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 300,000 |
$450 million unsecured notes |  | 3.66 | % |  | Jun-2029 |  | 450,000 |  |  | 450,000 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 450,000 |
$700 million unsecured notes |  | 2.69 | % |  | Mar-2030 |  | 700,000 |  |  | 700,000 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 700,000 |
$600 million unsecured notes |  | 2.65 | % |  | Jan-2031 |  | 600,000 |  |  | 600,000 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 600,000 |
$700 million unsecured notes |  | 2.15 | % |  | Jan-2032 | (6) | — |  |  | 700,000 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 700,000 |
Avalon Walnut Creek |  | 4.00 | % |  | Jul-2066 |  | 4,001 |  |  | 4,161 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 4,161 |
eaves Los Feliz |  | 3.68 | % |  | Jun-2027 |  | 41,400 |  |  | 41,400 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 41,400 |
eaves Woodland Hills |  | 3.67 | % |  | Jun-2027 |  | 111,500 |  |  | 111,500 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 111,500 |
Avalon Russett |  | 3.77 | % |  | Jun-2027 |  | 32,200 |  |  | 32,200 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 32,200 |
Avalon San Bruno II |  | 3.85 | % |  | Apr-2021 | (5) | 27,844 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
Avalon Westbury |  | 4.88 | % |  | Nov-2036 | (3) | 12,170 |  |  | 10,995 |  |  | 400 |  |  | 1,655 |  |  | 1,740 |  |  | 1,840 |  |  | 1,930 |  |  | 3,430 |
Avalon San Bruno III |  | 2.38 | % |  | Mar-2027 |  | 51,000 |  |  | 51,000 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 51,000 |
Avalon Cerritos |  | 3.35 | % |  | Aug-2029 |  | 30,250 |  |  | 30,250 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 30,250 |
|  |  |  |  |  | 6,810,365 |  |  | 7,031,506 |  |  | 400 |  |  | 1,655 |  |  | 601,740 |  |  | 301,840 |  |  | 826,930 |  |  | 5,298,941 |
Variable rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Term Loan - $100 million |  | 1.17 | % |  | Feb-2022 |  | 100,000 |  |  | 100,000 |  |  | — |  |  | 100,000 |  |  | — |  |  | — |  |  | — |  |  | — |
Term Loan - $150 million |  | 1.10 | % |  | Feb-2024 |  | 150,000 |  |  | 150,000 |  |  | — |  |  | — |  |  | — |  |  | 150,000 |  |  | — |  |  | — |
|  |  |  |  |  | 250,000 |  |  | 250,000 |  |  | — |  |  | 100,000 |  |  | — |  |  | 150,000 |  |  | — |  |  | — |
Total indebtedness - excluding Credit Facility |  |  |  |  |  | $ | 7,629,814 |  |  | $ | 7,844,286 |  |  | $ | 1,460 |  |  | $ | 109,918 |  |  | $ | 610,739 |  |  | $ | 461,677 |  |  | $ | 837,408 |  |  | $ | 5,823,084 |

_________________________
(1)Rates are given as of September 30, 2021 and include credit enhancement fees, facility fees, trustees' fees, the impact of interest rate hedges, offering costs, mark to market amortization and other fees.
(2)Balances outstanding represent total amounts due at maturity, and exclude deferred financing costs and debt discount for the unsecured notes of $48,363 and $47,995 as of September 30, 2021 and December 31, 2020, respectively, and deferred financing costs and debt discount associated with secured notes of $16,619 and $17,482 as of September 30, 2021 and December 31, 2020, respectively, as reflected on our Condensed Consolidated Balance Sheets included elsewhere in this report.
(3)In November 2021, we repaid this borrowing at par in advance of its scheduled maturity date.
(4)Financed by variable rate debt, but interest rate is capped through an interest rate protection agreement.
42

Table of Contents
(5)During the nine months ended September 30, 2021, we repaid this borrowing at par in advance of its scheduled maturity date.
(6)The net proceeds of these unsecured notes have been or will be allocated, in whole or in part, to one or more new or existing eligible green projects.
Future Financing and Capital Needs — Portfolio and Capital Markets Activity
In light of the COVID-19 pandemic, we continue to monitor the availability of our various capital raising alternatives. For the remainder of 2021, we expect to meet our liquidity needs from one or more a variety of internal and external sources, which may include (i) real estate dispositions, (ii) cash balances on hand as well as cash generated from our operating activities, (iii) borrowing capacity under our Credit Facility and (iv) secured and unsecured debt financings. Additional sources of liquidity in 2021 may include the issuance of common and preferred equity. Our ability to obtain additional financing will depend on a variety of factors, such as market conditions, the general availability of credit, the overall availability of credit to the real estate industry, our credit ratings and credit capacity, as well as the perception of lenders regarding our long or short-term financial prospects. In addition, the impacts of the COVID-19 pandemic on capital markets, including the availability and costs of debt and equity capital, remain uncertain and may have material adverse effects on our access to capital on attractive terms.
Before beginning new construction or reconstruction activity in 2021, including activity related to communities owned by unconsolidated joint ventures, we plan to source sufficient capital to complete these undertakings, although we cannot assure you that we will be able to obtain such financing. In the event that financing cannot be obtained, we may have to abandon Development Rights, write-off associated pre-development costs that were capitalized and/or forego reconstruction activity. In such instances, we will not realize the increased revenues and earnings that we expected from such Development Rights or reconstruction activity and significant losses could be incurred.
From time to time we use joint ventures to hold or develop individual real estate assets. We generally employ joint ventures primarily to mitigate asset concentration or market risk and secondarily as a source of liquidity. We may also use joint ventures related to mixed-use land development opportunities and new markets where our partners bring development and operational expertise and/or experience to the venture. Each joint venture or partnership agreement has been individually negotiated, and our ability to operate and/or dispose of a community in our sole discretion may be limited to varying degrees depending on the terms of the joint venture or partnership agreement. We cannot assure you that we will achieve our objectives through joint ventures.
In addition, we may pursue opportunities to invest in real estate development through mezzanine loans or other investments structured as debt.
In evaluating our allocation of capital within our markets, we sell assets that do not meet our long-term investment criteria or when capital and real estate markets allow us to realize a portion of the value created over our ownership periods and redeploy the proceeds from those sales to develop and redevelop communities. Because the proceeds from the sale of communities may not be immediately redeployed into revenue generating assets that we develop, redevelop or acquire, the immediate effect of a sale of a community for a gain is to increase net income, but reduce future total revenues, total expenses and NOI until such time as the proceeds have been redeployed into revenue generating assets. We believe that the temporary absence of future cash flows from communities sold will not have a material impact on our ability to fund future liquidity and capital resource needs.
43

Table of Contents
Unconsolidated Real Estate Investments and Off-Balance Sheet Arrangements
Unconsolidated Investments - Operating Communities
As of September 30, 2021, we had investments in the following unconsolidated real estate entities accounted for under the equity method of accounting, excluding development joint ventures. Refer to Note 5, "Investments in Real Estate Entities," of the Condensed Consolidated Financial Statements included elsewhere in this report, which includes information on the aggregate assets, liabilities and equity, as well as operating results, and our proportionate share of their operating results. For ventures holding operating apartment communities as of September 30, 2021, detail of the real estate and associated indebtedness underlying our unconsolidated investments is presented in the following table (dollars in thousands).

|  | Company ownership percentage |  | # of apartment homes |  | Total capitalized cost |  | Debt (1)
|  |  |  |  |  |  |  |  | Interest rate |  | Maturity date
Unconsolidated Real Estate Investments |  |  |  |  | Amount |  | Type |  |
NYTA MF Investors LLC |  |  |  |  |  |  |  |  |  |  |  |  |  |
1. Avalon Bowery Place I - New York, NY |  |  |  | 206 |  | $ | 209,621 |  |  | $ | 93,800 |  |  | Fixed |  | 4.01 | % |  | Jan 2029
2. Avalon Bowery Place II - New York, NY |  |  |  | 90 |  | 91,040 |  |  | 39,639 |  |  | Fixed |  | 4.01 | % |  | Jan 2029
3. Avalon Morningside - New York, NY (2) |  |  |  | 295 |  | 211,197 |  |  | 112,330 |  |  | Fixed |  | 3.55 | % |  | Jan 2029/May 2046
4. Avalon West Chelsea - New York, NY (3) |  |  |  | 305 |  | 128,520 |  |  | 66,000 |  |  | Fixed |  | 4.01 | % |  | Jan 2029
5. AVA High Line - New York, NY (3) |  |  |  | 405 |  | 121,438 |  |  | 84,000 |  |  | Fixed |  | 4.01 | % |  | Jan 2029
Total NYTA MF Investors LLC |  | 20.0 | % |  | 1,301 |  |  | 761,816 |  |  | 395,769 |  |  |  |  | 3.88 | % |  |
Archstone Multifamily Partners AC LP |  |  |  |  |  |  |  |  |  |  |  |
1. Avalon Studio 4121 - Studio City, CA |  |  |  | 149 |  |  | 57,218 |  |  | 26,475 |  |  | Fixed |  | 3.34 | % |  | Nov 2022
2. Avalon Station 250 - Dedham, MA |  |  |  | 285 |  |  | 99,305 |  |  | 51,555 |  |  | Fixed |  | 3.73 | % |  | Sep 2022
3. Avalon Grosvenor Tower - Bethesda, MD |  |  |  | 237 |  |  | 80,981 |  |  | 39,965 |  |  | Fixed |  | 3.74 | % |  | Sep 2022
Total Archstone Multifamily Partners AC LP |  | 28.6 | % |  | 671 |  |  | 237,504 |  |  | 117,995 |  |  |  |  | 3.65 | % |  |
Other Operating Joint Ventures |  |  |  |  |  |  |  |  |  |  |  |  |  |
1. MVP I, LLC |  | 25.0 | % |  | 313 |  |  | 129,126 |  |  | 103,000 |  |  | Fixed |  | 3.24 | % |  | Jul 2025
2. Brandywine Apartments of Maryland, LLC |  | 28.7 | % |  | 305 |  |  | 19,383 |  |  | 20,538 |  |  | Fixed |  | 3.40 | % |  | Jun 2028
Total Other Joint Ventures |  |  |  | 618 |  |  | 148,509 |  |  | 123,538 |  |  |  |  | 3.27 | % |  |
Total Unconsolidated Investments |  |  |  | 2,590 |  |  | $ | 1,147,829 |  |  | $ | 637,302 |  |  |  |  | 3.72 | % |  |

_____________________________
(1)We have not guaranteed the debt of these unconsolidated investees and bear no responsibility for the repayment unless otherwise disclosed.
(2)Borrowing on this community is comprised of two mortgage loans. The interest rate is the weighted average interest rate as of September 30, 2021.
(3)Borrowing on this dual-branded community is comprised of a single mortgage loan.
During the nine months ended September 30, 2021, the AC JV sold Avalon North Point and Avalon North Point Lofts, its final two communities containing an aggregate of 529 apartment homes, for an aggregate sales price of $325,000,000. Our share of the gain was $23,305,000. In conjunction with the disposition of Avalon North Point, the AC JV repaid a $111,653,000 loan to the equity investors in the venture at par.
44

Table of Contents
Unconsolidated Investments - Development Communities
The following table presents a summary of the Unconsolidated Development Communities.

Unconsolidated Development Community |  | Company ownership percentage | # of apartment homes |  | Projected total capitalized cost (1) ($ millions) |  | Construction start |  | Initial projected occupancy |  | Estimated completion
1. |  | Avalon Alderwood Mall Lynnwood, WA |  | 50.0 | % | 328 |  | $ | 110 |  |  | Q4 2019 |  | Q4 2021 |  | Q3 2022
2. |  | AVA Arts District (2)(3) Los Angeles, CA |  | 25.0 | % | 475 |  | 276 |  | Q3 2020 |  | Q1 2023 |  | Q4 2023
|  | Total |  |  | 803 |  |  | $ | 386 |  |  |  |  |  |  |

_____________________________
(1)Projected total capitalized cost includes all capitalized costs projected to be incurred to develop the respective Unconsolidated Development Community, determined in accordance with GAAP, including land acquisition costs, construction costs, real estate taxes, capitalized interest and loan fees, permits, professional fees and other regulatory fees, as well as costs incurred for first generation commercial tenants such as tenant improvements and leasing commissions. Projected total capitalized cost is the total projected joint venture amount.
(2)AVA Arts District is expected to contain 56,000 square feet of commercial space.
(3)As of September 30, 2021, we have contributed our total equity investment in AVA Arts District of $28,088,000. The venture has secured a variable rate construction loan with a maximum borrowing of $167,147,000 to fund approximately 60% of the development of AVA Arts District, of which $1,032,000 has been drawn as of September 30, 2021. The venture commenced draws under the loan subsequent to required equity contributions by the venture partners. We guarantee the construction loan on behalf of the venture, and any obligations we may incur under the guarantee, except for those due to our misconduct, are required capital contributions of the partners based on ownership interest.
Off-Balance Sheet Arrangements
In addition to our investment interests in consolidated and unconsolidated real estate entities, we have certain off-balance sheet arrangements with the entities in which we invest. Additional discussion of these entities can be found in Note 5, "Investments in Real Estate Entities," of our Condensed Consolidated Financial Statements included elsewhere in this report.
Unless otherwise noted, we have not guaranteed the debt of our unconsolidated real estate entities, as referenced in the tables above, nor do we have any obligation to fund this debt should the unconsolidated real estate entities be unable to do so. In the future, in the event the unconsolidated real estate entities were unable to meet their obligations under a loan, we cannot predict at this time whether we would provide any voluntary support, or take any other action, as any such action would depend on a variety of factors, including the amount of support required and the possibility that such support could enhance the return of the unconsolidated real estate entities and/or our returns by providing time for performance to improve.
There are no other material lines of credit, side agreements, financial guarantees or any other derivative financial instruments related to or between our unconsolidated real estate entities and us. In evaluating our capital structure and overall leverage, management takes into consideration our proportionate share of the indebtedness of unconsolidated entities in which we have an interest.
Contractual Obligations
We currently have contractual obligations consisting primarily of long-term debt obligations and lease obligations for certain land parcels and regional and administrative office space. As of September 30, 2021, other than as discussed in this Form 10-Q, there have been no other material changes in our scheduled contractual obligations as disclosed in our Form 10-K.
45

Table of Contents
Development Communities
As of September 30, 2021, we owned or held a direct interest in 15 Development Communities under construction. We expect these Development Communities, when completed, to add a total of 4,645 apartment homes and 40,000 square feet of commercial space to our portfolio for a total capitalized cost, including land acquisition costs, of approximately $1,863,000,000. We cannot assure you that we will meet our schedule for construction completion or that we will meet our budgeted costs, either individually or in the aggregate. You should carefully review Part I, Item 1A. "Risk Factors" of our Form 10-K, as well as the discussion under Part II, Item 1A. "Risk Factors" in this report, for a discussion of the risks associated with development activity.
The following table presents a summary of the Development Communities.

| Number of apartment homes |  | Projected total capitalized cost (1) ($ millions) |  | Construction start |  | Initial projected or actual occupancy (2) |  | Estimated completion |  | Estimated stabilized operations (3)
1. |  | Avalon Harrison (4) Harrison, NY | 143 |  |  | $ | 88 |  |  | Q4 2018 |  | Q3 2021 |  | Q3 2022 |  | Q1 2023
2. |  | Avalon Brea Place Brea, CA | 653 |  |  | 290 |  |  | Q2 2019 |  | Q1 2021 |  | Q3 2022 |  | Q1 2023
3. |  | Avalon Foundry Row Owings Mill, MD | 437 |  |  | 100 |  |  | Q2 2019 |  | Q1 2021 |  | Q1 2022 |  | Q2 2022
4. |  | Avalon Woburn Woburn, MA | 350 |  |  | 121 |  |  | Q4 2019 |  | Q3 2021 |  | Q2 2022 |  | Q4 2022
5. |  | AVA RiNo Denver, CO | 246 |  |  | 87 |  |  | Q4 2019 |  | Q4 2021 |  | Q1 2022 |  | Q3 2022
6. |  | Avalon Harbor Isle Island Park, NY | 172 |  |  | 90 |  |  | Q4 2020 |  | Q1 2022 |  | Q3 2022 |  | Q1 2023
7. |  | Avalon Easton II Easton, MA | 44 |  |  | 15 |  |  | Q4 2020 |  | Q3 2021 |  | Q4 2021 |  | Q1 2022
8. |  | Avalon Somerville Station Somerville, NJ | 375 |  |  | 117 |  |  | Q4 2020 |  | Q2 2022 |  | Q3 2023 |  | Q1 2024
9. |  | Avalon North Andover North Andover, MA | 170 |  |  | 56 |  |  | Q2 2021 |  | Q4 2022 |  | Q1 2023 |  | Q3 2023
10. |  | Avalon Brighton Boston, MA | 180 |  |  | 89 |  |  | Q2 2021 |  | Q1 2023 |  | Q2 2023 |  | Q4 2023
11. |  | Avalon Merrick Park Miami, FL | 254 |  |  | 101 |  |  | Q2 2021 |  | Q1 2023 |  | Q2 2023 |  | Q4 2023
12. |  | Avalon Amityville I Amityville, NY | 338 |  |  | 129 |  |  | Q2 2021 |  | Q1 2023 |  | Q1 2024 |  | Q3 2024
13. |  | Avalon Bothell Commons I Bothell, WA | 472 |  |  | 203 |  |  | Q2 2021 |  | Q2 2023 |  | Q1 2024 |  | Q3 2024
14. |  | Avalon Westminster Promenade Denver, CO | 312 |  |  | 107 |  |  | Q3 2021 |  | Q3 2023 |  | Q4 2023 |  | Q2 2024
15. |  | Avalon West Dublin Dublin, CA | 499 |  |  | 270 |  |  | Q3 2021 |  | Q3 2023 |  | Q4 2024 |  | Q1 2025
|  | Total | 4,645 |  |  | $ | 1,863 |  |  |  |  |  |  |  |  |

_________________________________
(1)Projected total capitalized cost includes all capitalized costs projected to be or actually incurred to develop the respective Development Community, determined in accordance with GAAP, including land acquisition costs, construction costs, real estate taxes, capitalized interest and loan fees, permits, professional fees, allocated development overhead and other regulatory fees, as well as costs incurred for first generation commercial tenants such as tenant improvements and leasing commissions.
(2)Initial projected occupancy dates are estimates.
(3)Stabilized operations is defined as the earlier of (i) attainment of 90% or greater physical occupancy or (ii) the one-year anniversary of completion of development.
(4)Avalon Harrison contains 27,000 square feet of commercial space.
During the three months ended September 30, 2021, we completed the development of Avalon Monrovia, located in Monrovia, CA, containing 154 apartment homes and 157,342 square feet of rentable space, for a total capitalized cost of $69,000,000, or $439 per square foot as of September 30, 2021. We generally anticipate incurring additional costs associated with this community that are customary for new developments.
46

Table of Contents
Development Rights
At September 30, 2021, we had $66,769,000 in acquisition and related capitalized costs for direct interests in three land parcels we own. In addition, we had $55,451,000 in capitalized costs (including legal fees, design fees and related overhead costs) related to (i) 15 Development Rights for which we control the land parcel, typically through a conditional agreement or option to purchase or lease the land, as well as (ii) costs incurred for four Development Rights that are additional development phases of existing stabilized operating communities we own and which will be constructed on land currently adjacent to or directly associated with those operating communities for which we own the land. Collectively, the land held for development and associated costs for deferred development rights relate to 22 Development Rights for which we expect to develop new apartment communities in the future. The Development Rights range from those beginning design and architectural planning to those that have completed site plans and drawings and can begin construction almost immediately. We estimate that the successful completion of all of these communities would ultimately add approximately 7,376 apartment homes to our portfolio. Substantially all of these apartment homes will offer features like those offered by the communities we currently own.
The properties comprising the Development Rights are in different stages of the due diligence and regulatory approval process. The decisions as to which of the Development Rights to invest in, if any, or to continue to pursue once an investment in a Development Right is made, are business judgments that we make after we perform financial, demographic and other analyses. In the event that we do not proceed with a Development Right, we generally would not recover any of the capitalized costs incurred in the pursuit of those communities, unless we were to recover amounts in connection with the sale of land; however, we cannot guarantee a recovery. Pre-development costs incurred in the pursuit of Development Rights for which future development is not yet considered probable are expensed as incurred. In addition, if the status of a Development Right changes, making future development no longer probable, any unrecoverable capitalized pre-development costs are charged to expense. During the nine months ended September 30, 2021, we incurred a charge of $1,900,000 for expensed transaction, development and other pursuit costs, net of recoveries, which include development pursuits that were not yet probable of future development at the time incurred, or for pursuits that we determined were no longer probable of being developed.
You should carefully review Part I, Item 1A. "Risk Factors" of our Form 10-K, as well as the discussion under Part II, Item 1A. "Risk Factors" in this report, for a discussion of the risks associated with Development Rights.
Insurance and Risk of Uninsured Losses
We maintain commercial general liability insurance and property insurance with respect to all of our communities, with insurance policies issued by a combination of third party insurers as well as a wholly-owned captive insurance company. These policies, along with other insurance policies we maintain, have policy specifications, insured and self-insured limits, exclusions and deductibles that we consider commercially reasonable. We utilize a wholly-owned captive insurance company to insure certain types and amounts of risks, which include property damage and resulting business interruption losses, general liability insurance and other construction related liability risks. The captive is utilized to insure other limited levels of risk, which may be in part reinsured by third party insurance. There are, however, certain types of losses (including, but not limited to, losses arising from nuclear liability, pandemic or acts of war) that are not insured, in full or in part, because they are either uninsurable or the cost of insurance makes it, in management’s view, economically impractical. You should carefully review the discussion under Part I, Item 1A. “Risk Factors” of our Form 10-K for a discussion of risks associated with an uninsured property or casualty loss.
Our communities are insured for certain property damage and business interruption losses through a combination of community specific insurance policies and/or a master property insurance program which covers the majority of our communities. This master property program provides a $400,000,000 limit for any single occurrence and annually in the aggregate, subject to certain sub-limits and exclusions. Under the master property program, we are subject to various deductibles per occurrence, as well as additional self-insured retentions. In addition to our potential liability for the various policy self-insured retentions and deductibles, our captive insurance company is directly responsible for 100% of the first $25,000,000 of losses (per occurrence) and 10% of the second $25,000,000 of losses (per occurrence) incurred by the master property insurance policy. Our master property insurance program includes coverage for losses resulting from customary perils, including but not limited to wildfires and windstorms. Limits, deductibles, self-insured retentions and coverages are consistent with customary market programs and may increase or decrease annually during the insurance renewal process which occurs on different dates throughout the calendar year.
47

Table of Contents
Many of our West Coast communities are located within the general vicinity of active earthquake faults. Many of our communities are near, and thus susceptible to, the major fault lines in California, including the San Andreas Fault, the Hayward Fault or other geological faults that are known or unknown. We cannot assure you that an earthquake would not cause damage or losses greater than our current insured levels. We procure property damage and resulting business interruption insurance coverage with a loss limit of $175,000,000 for any single occurrence and in the annual aggregate for losses resulting from earthquakes. However, for any losses resulting from earthquakes at communities located in California or Washington, the loss limit is $200,000,000 for any single occurrence and in the annual aggregate.
Our Southeast Florida communities are in wind exposed locations that could be impacted by significant storm events like hurricanes. We include coverage for losses arising from these types of weather events within our master property insurance program.
Our communities are insured for third-party liability losses through a combination of community specific insurance policies and/or coverage provided under a master commercial general liability and umbrella/excess insurance program. The master commercial general liability and umbrella/excess insurance policies cover the majority of our communities and are subject to certain coverage limitations and exclusions. Our captive insurance company is directly responsible for covered liability claims arising out of our primary commercial general liability policy, subject to a $2,000,000 per occurrence loss limit and annually in the aggregate, excess of applicable self-insured retentions and deductibles.
We also maintain certain casualty policies (general liability, umbrella/excess and workers compensation) for construction related risks that have various exclusions and deductibles that, in management’s view, are commercially reasonable.
Just as with office buildings, transportation systems and government buildings, there have been reports that apartment communities could become targets of terrorism. Our communities are insured for terrorism related losses through the Terrorism Risk Insurance Program Reauthorization Act (“TRIPRA”) program. This coverage extends to most of our casualty exposures (subject to deductibles and insured limits) and certain property insurance policies. We have also purchased private-market insurance for property damage due to terrorism with limits of $600,000,000 per occurrence and in the annual aggregate that includes certain coverages (not covered under TRIPRA) such as domestic-based terrorism. This insurance, often referred to as “non-certified” terrorism insurance, is subject to deductibles, limits and exclusions.
An additional consideration for insurance coverage and potential uninsured losses is mold growth or other environmental contamination. Mold growth may occur when excessive moisture accumulates in buildings or on building materials, particularly if the moisture problem remains undiscovered or is not addressed over a period of time. If a significant mold problem arises at one of our communities, we could be required to undertake a costly remediation program to contain or remove the mold from the affected community and could be exposed to other liabilities. For further discussion of the risks and our related prevention and remediation activities, please refer to the discussion under Part I, Item 1A. “Risk Factors - We may incur costs due to environmental contamination or non-compliance” of our Form 10-K. We cannot provide assurance that we will have coverage under our existing policies for property damage or liability to third parties arising as a result of exposure to mold or a claim of exposure to mold at one of our communities.
We also maintain other insurance programs that include program limits and coverages customary for our operations. These types of insurance provide coverage for events including but not limited to employee dishonesty, loss of data, and liability associated with management of certain employee benefit plans. These policies are subject to maximum loss limits and include coverage limitations or exclusion that may preclude us from fully recovering.
The amount or types of insurance we maintain may not be sufficient to cover all losses and we may change our policy limits, coverages and self-insured retentions at any time.
Inflation and Deflation
Substantially all of our apartment leases are for a term of one year or less. In an inflationary environment, this may allow us to realize increased rents upon renewal of existing leases or the beginning of new leases. Short-term leases generally minimize our risk from the adverse effect of inflation, although these leases generally permit residents to leave at the end of the lease term and therefore expose us to the effect of a decline in market rents.
48

Table of Contents
Supplemental U.S. Federal Income Tax Considerations
The following discussion supplements and updates the disclosures under “Certain U.S. Federal Income Tax Considerations and Consequences of Your Investment" in the prospectus dated February 25, 2021 contained in our Registration Statement on Form S-3 filed with the SEC on February 25, 2021.
The second paragraph under the heading “-U.S. Taxation of Non-U.S. Stockholders-Distributions Attributable to Sale or Exchange of Real Property” is hereby deleted and replaced with the following:
Subject to the following paragraph, we will be required to withhold and remit to the IRS 21% (or the then applicable highest corporate rate of U.S. federal income tax) of any distributions to non-U.S. stockholders attributable to gain from our sale or exchange of U.S. real property interests. Under long-standing regulations, we also may be required to withhold on any distributions to non-U.S. stockholders that we designate as capital gain dividends, including any distributions that could have been designated as capital gain dividends. Amounts so withheld are creditable against the non-U.S. stockholder’s U.S. federal income tax liability. A non-U.S. stockholder who receives distributions attributable to gain from a sale or exchange by us of U.S. real property interests will be required to file a U.S. federal income tax return for the taxable year.
Forward-Looking Statements
This Form 10-Q contains "forward-looking statements" as that term is defined under the Private Securities Litigation Reform Act of 1995. You can identify forward-looking statements by our use of the words "believe," "expect," "anticipate," "intend," "estimate," "assume," "project," "plan," "may," "shall," "will," "pursue" and other similar expressions in this Form 10-Q, that predict or indicate future events and trends and that do not report historical matters. These statements include, among other things, statements regarding our intent, belief or expectations with respect to:
•the impact of the COVID-19 pandemic on our business, results of operations and financial condition;
•our potential development, redevelopment, acquisition or disposition of communities;
•the timing and cost of completion of apartment communities under construction, reconstruction, development or redevelopment;
•the timing of lease-up, occupancy and stabilization of apartment communities;
•the timing and net sales proceeds of condominium sales;
•the pursuit of land on which we are considering future development;
•the anticipated operating performance of our communities;
•cost, yield, revenue, NOI and earnings estimates;
•the impact of landlord-tenant laws and rent regulations;
•our expansion into new markets;
•our declaration or payment of dividends;
•our joint venture and discretionary fund activities;
•our policies regarding investments, indebtedness, acquisitions, dispositions, financings and other matters;
•our qualification as a REIT under the Code;
•the real estate markets in Metro New York/New Jersey, Northern and Southern California, Denver, Colorado, Southeast Florida, Dallas and Austin, Texas and Charlotte and Raleigh-Durham, North Carolina, and markets in selected states in the Mid-Atlantic, New England and Pacific Northwest regions of the United States and in general;
49

Table of Contents
•the availability of debt and equity financing;
•interest rates;
•general economic conditions including the potential impacts from current economic conditions and the COVID-19 pandemic;
•trends affecting our financial condition or results of operations; and
•the impact of outstanding legal proceedings.
We cannot assure the future results or outcome of the matters described in these statements; rather, these statements merely reflect our current expectations of the approximate outcomes of the matters discussed. We do not undertake a duty to update these forward-looking statements, and therefore they may not represent our estimates and assumptions after the date of this report. You should not rely on forward-looking statements because they involve known and unknown risks, uncertainties and other factors, some of which are beyond our control. These risks, uncertainties and other factors may cause our actual results, performance or achievements to differ materially from the anticipated future results, performance or achievements expressed or implied by these forward-looking statements. You should carefully review the discussion under Part I, Item 1A. "Risk Factors" of our Form 10-K and Part II, Item 1A. "Risk Factors" in this report, for further discussion of risks associated with forward-looking statements.
Risks and uncertainties that might cause such differences include those related to the COVID-19 pandemic, including, among other factors, (i) the effect on the multifamily industry and the general economy of measures taken by businesses and the government to prevent the spread of the novel coronavirus and relieve economic distress of consumers, such as governmental limitations on the ability of multifamily owners to evict residents who are delinquent in the payment of their rent and (ii) the preferences of consumers and businesses for living and working arrangements both during and after the pandemic. In addition, the effects of the pandemic are likely to heighten the following risks, which we routinely face in our business.
Some of the factors that could cause our actual results, performance or achievements to differ materially from those expressed or implied by these forward-looking statements include, but are not limited to, the following:
•we may fail to secure development opportunities due to an inability to reach agreements with third-parties to obtain land at attractive prices or to obtain desired zoning and other local approvals;
•we may abandon or defer development opportunities for a number of reasons, including changes in local market conditions which make development less desirable, increases in costs of development, increases in the cost of capital or lack of capital availability, resulting in losses;
•construction costs of a community may exceed our original estimates;
•we may not complete construction and lease-up of communities under development or redevelopment on schedule, resulting in increased interest costs and construction costs and a decrease in our expected rental revenues;
•the timing and net proceeds of condominium sales may not equal our current expectations;
•occupancy rates and market rents may be adversely affected by competition and local economic and market conditions which are beyond our control;
•financing may not be available on favorable terms or at all, and our cash flows from operations and access to cost effective capital may be insufficient for the development of our pipeline which could limit our pursuit of opportunities;
•the impact of new landlord-tenant laws and rent regulations may be greater than we expect;
•our cash flows may be insufficient to meet required payments of principal and interest, and we may be unable to refinance existing indebtedness or the terms of such refinancing may not be as favorable as the terms of existing indebtedness;
50

Table of Contents
•we may be unsuccessful in our management of joint ventures and the REIT vehicles that are used with certain joint ventures;
•laws and regulations implementing rent control or rent stabilization, or otherwise limiting our ability to increase rents, charge fees or evict tenants, may impact our revenue or increase our costs;
•our expectations, estimates and assumptions as of the date of this filing regarding outstanding legal proceedings are subject to change; and
•the possibility that we may choose to pay dividends in our stock instead of cash, which may result in stockholders having to pay taxes with respect to such dividends in excess of the cash received, if any.
Critical Accounting Policies
The preparation of financial statements in conformity with GAAP requires management to use judgment in the application of accounting policies, including making estimates and assumptions. If our judgment or interpretation of the facts and circumstances relating to various transactions had been different, or different assumptions were made, it is possible that different accounting policies would have been applied, resulting in different financial results or a different presentation of our financial statements. Our critical accounting policies consist of the following: (i) cost capitalization and (ii) abandoned pursuit costs and asset impairment. Our critical accounting policies and estimates have not changed materially from the discussion of our significant accounting policies found in Management's Discussion and Analysis and Results of Operations in our Form 10-K.
51

Table of Contents
ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK
There have been no material changes to our exposures to market risk since December 31, 2020.
ITEM 4. CONTROL AND PROCEDURES
(a)Evaluation of disclosure controls and procedures.
The Company carried out an evaluation under the supervision and with the participation of the Company's management, including the Company's Chief Executive Officer and Chief Financial Officer, of the effectiveness of the design and operation of the Company's disclosure controls and procedures as of September 30, 2021. Based upon that evaluation, the Chief Executive Officer and Chief Financial Officer concluded that the Company's disclosure controls and procedures are effective to ensure that information required to be disclosed by the Company in the reports it files or submits under the Securities Exchange Act of 1934 is recorded, processed, summarized and reported, within the time periods specified in the Securities and Exchange Commission's rules and forms.
We continue to review and document our disclosure controls and procedures, including our internal controls and procedures for financial reporting, and may from time to time make changes aimed at enhancing their effectiveness and to ensure that our systems evolve with our business.
(b)Changes in internal controls over financial reporting.
None.
PART II. OTHER INFORMATION
ITEM 1. LEGAL PROCEEDINGS
The Company is involved in various claims and/or administrative proceedings that arise in the ordinary course of its business. While no assurances can be given, the Company does not currently believe that any of these outstanding litigation matters, individually or in the aggregate, will have a material adverse effect on its financial condition or results of operations.
ITEM 1A. RISK FACTORS
In addition to the other information set forth in this report, you should carefully consider the risk factors that could materially affect our business, financial condition or future results discussed in our Annual Report on Form 10-K for the fiscal year ended December 31, 2020 in Part I, Item 1A. "Risk Factors." The risks described in our Form 10-K are not the only risks that could affect the Company. Additional risks and uncertainties not currently known to us or that we currently deem to be immaterial may also materially adversely affect our business, financial condition and/or operating results in the future. There have been no material changes to our risk factors since December 31, 2020.
ITEM 2. UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS
(a) None.
(b) Not applicable.
(c) Issuer Purchases of Equity Securities

Period |  | (a) Total Number of Shares Purchased (1) |  | (b) Average Price Paid Per Share |  | (c) Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs |  | (d) Maximum Dollar Amount that May Yet be Purchased Under the Plans or Programs (in thousands) (2)
July 1 - July 31, 2021 |  | 494 |  |  | $ | 217.77 |  |  | — |  |  | $ | 316,148 |
August 1 - August 31, 2021 |  | 308 |  |  | $ | 228.39 |  |  | — |  |  | $ | 316,148 |
September 1 - September 30, 2021 |  | 14 |  |  | $ | 232.85 |  |  | — |  |  | $ | 316,148 |

52

Table of Contents
___________________________________
(1)Consists of shares surrendered to the Company in connection with exercise of stock options as payment of exercise price, as well as for taxes associated with the vesting of restricted share grants.
(2)The Company announced on July 29, 2020 that the Board of Directors approved the 2020 Stock Repurchase Program, under which the Company may acquire shares of its common stock in open market or negotiated transactions up to an aggregate purchase price of $500,000,000. Purchases of common stock under the 2020 Stock Repurchase Program may be exercised from time to time in the Company’s discretion and in such amounts as market conditions warrant. The timing and actual number of shares repurchased will depend on a variety of factors including price, corporate and regulatory requirements, market conditions and other corporate liquidity requirements and priorities. The 2020 Stock Repurchase Program does not have an expiration date and may be suspended or terminated at any time without prior notice.
ITEM 3. DEFAULTS UPON SENIOR SECURITIES
None.
ITEM 4. MINE SAFETY DISCLOSURES
Not applicable.
ITEM 5. OTHER INFORMATION
None.
53

Table of Contents
ITEM 6. EXHIBITS

Exhibit No. |  |  |  | Description
3(i).1 |  | — |  | Articles of Amendment and Restatement of Articles of Incorporation of the Company, dated as of June 4, 1998. (Incorporated by reference to Exhibit 3(i).1 to Form 10-K of the Company filed March 1, 2007.)
3(i).2 |  | — |  | Articles of Amendment, dated as of October 2, 1998. (Incorporated by reference to Exhibit 3(i).2 to Form 10-K of the Company filed March 1, 2007.)
3(i).3 |  | — |  | Articles of Amendment, dated as of May 22, 2013. (Incorporated by reference to Exhibit 3(i).3 to Form 8-K of the Company filed May 22, 2013.)
3(i).4 |  | — |  | Articles of Amendment, dated as of May 14, 2020. (Incorporated by reference to Exhibit 3(i).4 to Form 8-K of the Company filed May 15, 2020.)
3(ii).1 |  | — |  | Amended and Restated Bylaws of the Company, as adopted by the Board of Directors on November 12, 2015, and as further amended on February 16, 2017, November 9, 2017, and May 6, 2019. (Incorporated by reference to Exhibit 3(ii).1 to Form 10-Q of the Company filed August 6, 2019.)
4.1 |  | — |  | Indenture for Debt Securities, dated as of February 23, 2018, between the Company and The Bank of New York, as Trustee (Incorporated by reference to Exhibit 4.1 to Form 8-K of the Company filed September 15, 2021.)
4.2 |  | — |  | Form of 2.050% Senior Notes due 2032 (Incorporated by reference to Exhibit 4.4 to Form 8-K of the Company filed September 15, 2021.)
31.1 |  | — |  | Certification pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 (Chief Executive Officer). (Filed herewith.)
31.2 |  | — |  | Certification pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 (Chief Financial Officer). (Filed herewith.)
32 |  | — |  | Certification pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (Chief Executive Officer and Chief Financial Officer). (Furnished herewith.)
101 |  | — |  | The following financial materials from AvalonBay Communities, Inc.'s Quarterly Report on Form 10-Q for the period ended September 30, 2021 formatted in Inline XBRL (Extensible Business Reporting Language) includes: (i) the Condensed Consolidated Balance Sheets, (ii) the Condensed Consolidated Statements of Comprehensive Income, (iii) the Condensed Consolidated Statements of Cash Flows and (iv) Notes to the Consolidated Financial Statements. (Filed herewith.)
104 |  | — |  | Cover Page Interactive Data File (embedded within the Inline XBRL document). (Filed herewith.)

54

Table of Contents
SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

| AVALONBAY COMMUNITIES, INC.
Date: | November 4, 2021 | /s/ Timothy J. Naughton
|  | Timothy J. Naughton
|  | Chairman and Chief Executive Officer
|  | (Principal Executive Officer)
Date: | November 4, 2021 | /s/ Kevin P. O'Shea
|  | Kevin P. O'Shea
|  | Chief Financial Officer
|  | (Principal Financial Officer)

55