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v3.25.3

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands | Sep. 30, 2025 | Dec. 31, 2024
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Real estate, at cost (amounts related to variable interest entities (“VIEs”) of $7,958,987 and $7,797,430 at September 30, 2025 and December 31, 2024, respectively) | $ 28,609,784 | $ 27,870,623
Right of use assets - finance leases (amounts related to VIEs of $21,000 and $21,000 at September 30, 2025 and December 31, 2024, respectively) | 372,747 | 372,922
Right of use assets - operating leases (amounts related to VIEs of $0 and $140,558 at September 30, 2025 and December 31, 2024, respectively) | 321,063 | 334,767
Less: accumulated depreciation (amounts related to VIEs of $(1,721,829) and $(1,628,274) at September 30, 2025 and December 31, 2024, respectively) | (8,008,908) | (7,528,057)
Cash and cash equivalents (amounts related to VIEs of $191,606 and $373,737 at September 30, 2025 and December 31, 2024, respectively) | 861,066 | 1,254,882
Cash held in escrows (amounts related to VIEs of $5,003 and $4,979 at September 30, 2025 and December 31, 2024, respectively) | 77,663 | 80,314
Tenant and other receivables, net (amounts related to VIEs of $42,233 and $20,435 at September 30, 2025 and December 31, 2024, respectively) | 136,743 | 107,453
Accrued rental income, net (amounts related to VIEs of $465,408 and $435,110 at September 30, 2025 and December 31, 2024, respectively) | 1,532,403 | 1,466,220
Deferred charges, net (amounts related to VIEs of $206,016 and $211,726 at September 30, 2025 and December 31, 2024, respectively) | 802,785 | 813,345
Prepaid expenses and other assets (amounts related to VIEs of $51,682 and $15,036 at September 30, 2025 and December 31, 2024, respectively) | 137,561 | 70,839
Mortgage notes payable, net (amounts related to VIEs of $3,285,659 and $3,282,027 at September 30, 2025 and December 31, 2024, respectively) | 4,279,482 | 4,276,609
Lease liabilities - finance leases (amounts related to VIEs of $21,042 and $20,931 at September 30, 2025 and December 31, 2024, respectively) | 363,207 | 370,885
Lease liabilities - operating leases (amounts related to VIEs of $0 and $157,691 at September 30, 2025 and December 31, 2024, respectively) | 379,792 | 392,686
Accounts payable and accrued expenses (amounts related to VIEs of $111,058 and $115,808 at September 30, 2025 and December 31, 2024, respectively) | 484,798 | 401,874
Other liabilities (amounts related to VIEs of $91,767 and $126,202 at September 30, 2025 and December 31, 2024, respectively) | $ 406,820 | $ 450,796
Reedemable deferred stock units, units | 107,696 | 128,227
Limited Partners' Capital Account, Units Outstanding (in units) | 156,632,416 |
General Partners' Capital Account, Units Outstanding (in units) | 1,767,998 |
Excess stock, par value | $ 0.01 | $ 0.01
Excess stock, shares authorized | 150,000,000 | 150,000,000
Excess stock, shares outstanding | 0 | 0
Excess stock, shares issued | 0 | 0
Preferred stock, par value | $ 0.01 | $ 0.01
Preferred stock, shares authorized | 50,000,000 | 50,000,000
Preferred stock / units, shares / units issued (in shares / units) | 0 | 0
Preferred stock / units, shares / units outstanding (in shares / units) | 0 | 0
Common Stock, Par or Stated Value Per Share | $ 0.01 | $ 0.01
Common stock, shares authorized | 250,000,000 | 250,000,000
Common stock, shares issued | 158,479,314 | 158,253,895
Common Stock, Shares, Outstanding | 158,400,414 | 158,174,995
Treasury common stock at cost, shares | 78,900 | 78,900
Related Party |  |
Note Receivable, after Allowance for Credit Loss | $ 88,879 | $ 88,779
Nonrelated Party |  |
Note Receivable, after Allowance for Credit Loss | 8,898 | 4,947
Boston Properties Limited Partnership |  |
Real estate, at cost (amounts related to variable interest entities (“VIEs”) of $7,958,987 and $7,797,430 at September 30, 2025 and December 31, 2024, respectively) | 28,248,312 | 27,504,358
Right of use assets - finance leases (amounts related to VIEs of $21,000 and $21,000 at September 30, 2025 and December 31, 2024, respectively) | 372,747 | 372,922
Right of use assets - operating leases (amounts related to VIEs of $0 and $140,558 at September 30, 2025 and December 31, 2024, respectively) | 321,063 | 334,767
Less: accumulated depreciation (amounts related to VIEs of $(1,721,829) and $(1,628,274) at September 30, 2025 and December 31, 2024, respectively) | (7,875,405) | (7,397,882)
Cash and cash equivalents (amounts related to VIEs of $191,606 and $373,737 at September 30, 2025 and December 31, 2024, respectively) | 861,066 | 1,254,882
Cash held in escrows (amounts related to VIEs of $5,003 and $4,979 at September 30, 2025 and December 31, 2024, respectively) | 77,663 | 80,314
Tenant and other receivables, net (amounts related to VIEs of $42,233 and $20,435 at September 30, 2025 and December 31, 2024, respectively) | 136,743 | 107,453
Accrued rental income, net (amounts related to VIEs of $465,408 and $435,110 at September 30, 2025 and December 31, 2024, respectively) | 1,532,403 | 1,466,220
Deferred charges, net (amounts related to VIEs of $206,016 and $211,726 at September 30, 2025 and December 31, 2024, respectively) | 802,785 | 813,345
Prepaid expenses and other assets (amounts related to VIEs of $51,682 and $15,036 at September 30, 2025 and December 31, 2024, respectively) | 137,561 | 70,839
Mortgage notes payable, net (amounts related to VIEs of $3,285,659 and $3,282,027 at September 30, 2025 and December 31, 2024, respectively) | 4,279,482 | 4,276,609
Lease liabilities - finance leases (amounts related to VIEs of $21,042 and $20,931 at September 30, 2025 and December 31, 2024, respectively) | 363,207 | 370,885
Lease liabilities - operating leases (amounts related to VIEs of $0 and $157,691 at September 30, 2025 and December 31, 2024, respectively) | 379,792 | 392,686
Accounts payable and accrued expenses (amounts related to VIEs of $111,058 and $115,808 at September 30, 2025 and December 31, 2024, respectively) | 484,798 | 401,874
Other liabilities (amounts related to VIEs of $91,767 and $126,202 at September 30, 2025 and December 31, 2024, respectively) | $ 406,820 | $ 450,796
Reedemable deferred stock units, units | 107,696 | 128,227
Limited Partners' Capital Account, Units Outstanding (in units) | 156,632,416 | 156,412,584
General Partners' Capital Account, Units Outstanding (in units) | 1,767,998 | 1,762,411
NonControlling Interest Redeemable Partnership Units Common Units Shares Outstanding | 15,696,776 | 15,730,882
NonControlling Interest Redeemable Partnership Units Common Units Long Term Incentive Units At Redemption Value Shares Outstanding | 2,702,590 | 2,335,229
Boston Properties Limited Partnership | Related Party |  |
Note Receivable, after Allowance for Credit Loss | $ 88,879 | $ 88,779
Boston Properties Limited Partnership | Nonrelated Party |  |
Note Receivable, after Allowance for Credit Loss | 8,898 | 4,947
Variable Interest Entity, Primary Beneficiary [Member] |  |
Real estate, at cost (amounts related to variable interest entities (“VIEs”) of $7,958,987 and $7,797,430 at September 30, 2025 and December 31, 2024, respectively) | 7,958,987 | 7,797,430
Right of use assets - finance leases (amounts related to VIEs of $21,000 and $21,000 at September 30, 2025 and December 31, 2024, respectively) | 21,000 | 21,000
Right of use assets - operating leases (amounts related to VIEs of $0 and $140,558 at September 30, 2025 and December 31, 2024, respectively) | 0 | 140,558
Less: accumulated depreciation (amounts related to VIEs of $(1,721,829) and $(1,628,274) at September 30, 2025 and December 31, 2024, respectively) | (1,721,829) | (1,628,274)
Cash and cash equivalents (amounts related to VIEs of $191,606 and $373,737 at September 30, 2025 and December 31, 2024, respectively) | 191,606 | 373,737
Cash held in escrows (amounts related to VIEs of $5,003 and $4,979 at September 30, 2025 and December 31, 2024, respectively) | 5,003 | 4,979
Tenant and other receivables, net (amounts related to VIEs of $42,233 and $20,435 at September 30, 2025 and December 31, 2024, respectively) | 42,233 | 20,435
Accrued rental income, net (amounts related to VIEs of $465,408 and $435,110 at September 30, 2025 and December 31, 2024, respectively) | 465,408 | 435,110
Deferred charges, net (amounts related to VIEs of $206,016 and $211,726 at September 30, 2025 and December 31, 2024, respectively) | 206,016 | 211,726
Prepaid expenses and other assets (amounts related to VIEs of $51,682 and $15,036 at September 30, 2025 and December 31, 2024, respectively) | 51,682 | 15,036
Mortgage notes payable, net (amounts related to VIEs of $3,285,659 and $3,282,027 at September 30, 2025 and December 31, 2024, respectively) | 3,285,659 | 3,282,027
Lease liabilities - finance leases (amounts related to VIEs of $21,042 and $20,931 at September 30, 2025 and December 31, 2024, respectively) | 21,042 | 20,931
Lease liabilities - operating leases (amounts related to VIEs of $0 and $157,691 at September 30, 2025 and December 31, 2024, respectively) | 0 | 157,691
Accounts payable and accrued expenses (amounts related to VIEs of $111,058 and $115,808 at September 30, 2025 and December 31, 2024, respectively) | 111,058 | 115,808
Other liabilities (amounts related to VIEs of $91,767 and $126,202 at September 30, 2025 and December 31, 2024, respectively) | 91,767 | 126,202
Variable Interest Entity, Primary Beneficiary [Member] | Boston Properties Limited Partnership |  |
Real estate, at cost (amounts related to variable interest entities (“VIEs”) of $7,958,987 and $7,797,430 at September 30, 2025 and December 31, 2024, respectively) | 7,958,987 | 7,797,430
Right of use assets - finance leases (amounts related to VIEs of $21,000 and $21,000 at September 30, 2025 and December 31, 2024, respectively) | 21,000 | 21,000
Right of use assets - operating leases (amounts related to VIEs of $0 and $140,558 at September 30, 2025 and December 31, 2024, respectively) | 0 | 140,558
Less: accumulated depreciation (amounts related to VIEs of $(1,721,829) and $(1,628,274) at September 30, 2025 and December 31, 2024, respectively) | (1,721,829) | (1,628,274)
Cash and cash equivalents (amounts related to VIEs of $191,606 and $373,737 at September 30, 2025 and December 31, 2024, respectively) | 191,606 | 373,737
Cash held in escrows (amounts related to VIEs of $5,003 and $4,979 at September 30, 2025 and December 31, 2024, respectively) | 5,003 | 4,979
Tenant and other receivables, net (amounts related to VIEs of $42,233 and $20,435 at September 30, 2025 and December 31, 2024, respectively) | 42,233 | 20,435
Accrued rental income, net (amounts related to VIEs of $465,408 and $435,110 at September 30, 2025 and December 31, 2024, respectively) | 465,408 | 435,110
Deferred charges, net (amounts related to VIEs of $206,016 and $211,726 at September 30, 2025 and December 31, 2024, respectively) | 206,016 | 211,726
Prepaid expenses and other assets (amounts related to VIEs of $51,682 and $15,036 at September 30, 2025 and December 31, 2024, respectively) | 51,682 | 15,036
Mortgage notes payable, net (amounts related to VIEs of $3,285,659 and $3,282,027 at September 30, 2025 and December 31, 2024, respectively) | 3,285,659 | 3,282,027
Lease liabilities - finance leases (amounts related to VIEs of $21,042 and $20,931 at September 30, 2025 and December 31, 2024, respectively) | 21,042 | 20,931
Lease liabilities - operating leases (amounts related to VIEs of $0 and $157,691 at September 30, 2025 and December 31, 2024, respectively) | 0 | 157,691
Accounts payable and accrued expenses (amounts related to VIEs of $111,058 and $115,808 at September 30, 2025 and December 31, 2024, respectively) | 111,058 | 115,808
Other liabilities (amounts related to VIEs of $91,767 and $126,202 at September 30, 2025 and December 31, 2024, respectively) | $ 91,767 | $ 126,202

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