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Consolidated Balance Sheets - USD ($) $ in Thousands | Sep. 30, 2024 | Dec. 31, 2023
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ASSETS |  |  |
Real estate, at cost (amounts related to variable interest entities (“VIEs”) of $7,646,435 and $7,054,075 at September 30, 2024 and December 31, 2023, respectively) |  | $ 27,557,824 | $ 26,749,209
Right of use assets - finance leases (amounts related to VIEs of $21,000 and $21,000 at September 30, 2024 and December 31, 2023, respectively) |  | 372,896 | 401,680
Right of use assets - operating leases (amounts related to VIEs of $145,052 and $158,885 at September 30, 2024 and December 31, 2023, respectively) | [1] | 339,804 | 324,298
Less: accumulated depreciation (amounts related to VIEs of $(1,601,919) and $(1,501,483) at September 30, 2024 and December 31, 2023, respectively) |  | (7,369,545) | (6,881,728)
Total real estate |  | 20,900,979 | 20,593,459
Cash and cash equivalents (amounts related to VIEs of $322,604 and $245,317 at September 30, 2024 and December 31, 2023, respectively) |  | 1,420,475 | 1,531,477
Cash held in escrows (amounts related to VIEs of $5,032 and $22,160 at September 30, 2024 and December 31, 2023, respectively) |  | 51,009 | 81,090
Investments in securities |  | 39,186 | 36,337
Tenant and other receivables, net (amounts related to VIEs of $19,216 and $27,987 at September 30, 2024 and December 31, 2023, respectively) |  | 99,706 | 122,407
Note receivable, net |  | 3,937 | 1,714
Sales-type lease receivable, net |  | 14,429 | 13,704
Accrued rental income, net (amounts related to VIEs of $425,867 and $401,159 at September 30, 2024 and December 31, 2023, respectively) |  | 1,438,492 | 1,355,212
Deferred charges, net (amounts related to VIEs of $201,947 and $175,383 at September 30, 2024 and December 31, 2023, respectively) |  | 794,571 | 760,421
Prepaid expenses and other assets (amounts related to VIEs of $50,275 and $11,824 at September 30, 2024 and December 31, 2023, respectively) |  | 132,078 | 64,230
Investments in unconsolidated joint ventures |  | 1,421,886 | 1,377,319
Total assets |  | 26,405,536 | 26,026,149
Liabilities: |  |  |
Mortgage notes payable, net (amounts related to VIEs of $3,280,817 and $3,277,185 at September 30, 2024 and December 31, 2023, respectively) |  | 4,275,155 | 4,166,379
Unsecured senior notes, net |  | 10,642,033 | 10,491,617
Unsecured line of credit |  | 0 | 0
Unsecured term loans, net |  | 798,058 | 1,198,301
Unsecured commercial paper |  | 500,000 | 0
Lease liabilities - finance leases (amounts related to VIEs of $20,897 and $20,794 at September 30, 2024 and December 31, 2023, respectively) |  | 373,260 | 417,961
Lease liabilities - operating leases (amounts related to VIEs of $154,637 and $145,826 at September 30, 2024 and December 31, 2023, respectively) |  | 389,444 | 350,391
Accounts payable and accrued expenses (amounts related to VIEs of $120,092 and $59,667 at September 30, 2024 and December 31, 2023, respectively) |  | 444,288 | 458,329
Dividends and distributions payable |  | 172,191 | 171,176
Accrued interest payable |  | 121,360 | 133,684
Other liabilities (amounts related to VIEs of $89,876 and $115,275 at September 30, 2024 and December 31, 2023, respectively) |  | 407,441 | 445,947
Total liabilities |  | 18,123,230 | 17,833,785
Redeemable deferred stock units— 132,930 and 119,471 units outstanding at redemption value at September 30, 2024 and December 31, 2023, respectively |  | $ 10,696 | $ 8,383
Excess stock, shares outstanding |  | 0 | 0
Excess stock, shares issued |  | 0 | 0
Preferred stock / units, shares / units issued (in shares / units) |  | 0 | 0
Preferred stock / units, shares / units outstanding (in shares / units) |  | 0 | 0
Equity / Capital: |  |  |
Excess stock, $0.01 par value, 150,000,000 shares authorized, none issued or outstanding |  | $ 0 | $ 0
Preferred stock, $0.01 par value, 50,000,000 shares authorized, none issued or outstanding |  | 0 | 0
Common stock, $0.01 par value, 250,000,000 shares authorized, 158,058,798 and 157,019,766 issued and 157,979,898 and 156,940,866 outstanding at September 30, 2024 and December 31, 2023, respectively |  | 1,580 | 1,569
Additional paid-in capital |  | 6,822,489 | 6,715,149
Dividends in excess of earnings |  | $ (1,035,710) | $ (816,152)
Treasury common stock at cost, shares |  | 78,900 | 78,900
Treasury common stock at cost, 78,900 shares at September 30, 2024 and December 31, 2023 |  | $ (2,722) | $ (2,722)
Accumulated other comprehensive loss |  | (26,428) | (21,147)
Total stockholders' equity attributable to Boston Properties, Inc. |  | 5,759,209 | 5,876,697
Noncontrolling interests: |  |  |
Common units of the Operating Partnership |  | 638,129 | 666,580
Property partnerships |  | 1,874,272 | 1,640,704
Total equity / capital |  | 8,271,610 | 8,183,981
Total liabilities and equity / capital |  | 26,405,536 | 26,026,149
Related Party |  |  |
ASSETS |  |  |
Related party notes receivable, net |  | 88,788 | 88,779
Variable Interest Entity, Primary Beneficiary [Member] |  |  |
ASSETS |  |  |
Real estate, at cost (amounts related to variable interest entities (“VIEs”) of $7,646,435 and $7,054,075 at September 30, 2024 and December 31, 2023, respectively) |  | 7,646,435 | 7,054,075
Right of use assets - finance leases (amounts related to VIEs of $21,000 and $21,000 at September 30, 2024 and December 31, 2023, respectively) |  | 21,000 | 21,000
Right of use assets - operating leases (amounts related to VIEs of $145,052 and $158,885 at September 30, 2024 and December 31, 2023, respectively) |  | 145,052 | 158,885
Less: accumulated depreciation (amounts related to VIEs of $(1,601,919) and $(1,501,483) at September 30, 2024 and December 31, 2023, respectively) |  | (1,601,919) | (1,501,483)
Cash and cash equivalents (amounts related to VIEs of $322,604 and $245,317 at September 30, 2024 and December 31, 2023, respectively) |  | 322,604 | 245,317
Cash held in escrows (amounts related to VIEs of $5,032 and $22,160 at September 30, 2024 and December 31, 2023, respectively) |  | 5,032 | 22,160
Tenant and other receivables, net (amounts related to VIEs of $19,216 and $27,987 at September 30, 2024 and December 31, 2023, respectively) |  | 19,216 | 27,987
Accrued rental income, net (amounts related to VIEs of $425,867 and $401,159 at September 30, 2024 and December 31, 2023, respectively) |  | 425,867 | 401,159
Deferred charges, net (amounts related to VIEs of $201,947 and $175,383 at September 30, 2024 and December 31, 2023, respectively) |  | 201,947 | 175,383
Prepaid expenses and other assets (amounts related to VIEs of $50,275 and $11,824 at September 30, 2024 and December 31, 2023, respectively) |  | 50,275 | 11,824
Liabilities: |  |  |
Mortgage notes payable, net (amounts related to VIEs of $3,280,817 and $3,277,185 at September 30, 2024 and December 31, 2023, respectively) |  | 3,280,817 | 3,277,185
Lease liabilities - finance leases (amounts related to VIEs of $20,897 and $20,794 at September 30, 2024 and December 31, 2023, respectively) |  | 20,897 | 20,794
Lease liabilities - operating leases (amounts related to VIEs of $154,637 and $145,826 at September 30, 2024 and December 31, 2023, respectively) |  | 154,637 | 145,826
Accounts payable and accrued expenses (amounts related to VIEs of $120,092 and $59,667 at September 30, 2024 and December 31, 2023, respectively) |  | 120,092 | 59,667
Other liabilities (amounts related to VIEs of $89,876 and $115,275 at September 30, 2024 and December 31, 2023, respectively) |  | 89,876 | 115,275
Boston Properties Limited Partnership |  |  |
ASSETS |  |  |
Real estate, at cost (amounts related to variable interest entities (“VIEs”) of $7,646,435 and $7,054,075 at September 30, 2024 and December 31, 2023, respectively) |  | 27,191,559 | 26,382,944
Right of use assets - finance leases (amounts related to VIEs of $21,000 and $21,000 at September 30, 2024 and December 31, 2023, respectively) |  | 372,896 | 401,680
Right of use assets - operating leases (amounts related to VIEs of $145,052 and $158,885 at September 30, 2024 and December 31, 2023, respectively) | [1] | 339,804 | 324,298
Less: accumulated depreciation (amounts related to VIEs of $(1,601,919) and $(1,501,483) at September 30, 2024 and December 31, 2023, respectively) |  | (7,241,074) | (6,758,361)
Total real estate |  | 20,663,185 | 20,350,561
Cash and cash equivalents (amounts related to VIEs of $322,604 and $245,317 at September 30, 2024 and December 31, 2023, respectively) |  | 1,420,475 | 1,531,477
Cash held in escrows (amounts related to VIEs of $5,032 and $22,160 at September 30, 2024 and December 31, 2023, respectively) |  | 51,009 | 81,090
Investments in securities |  | 39,186 | 36,337
Tenant and other receivables, net (amounts related to VIEs of $19,216 and $27,987 at September 30, 2024 and December 31, 2023, respectively) |  | 99,706 | 122,407
Note receivable, net |  | 3,937 | 1,714
Sales-type lease receivable, net |  | 14,429 | 13,704
Accrued rental income, net (amounts related to VIEs of $425,867 and $401,159 at September 30, 2024 and December 31, 2023, respectively) |  | 1,438,492 | 1,355,212
Deferred charges, net (amounts related to VIEs of $201,947 and $175,383 at September 30, 2024 and December 31, 2023, respectively) |  | 794,571 | 760,421
Prepaid expenses and other assets (amounts related to VIEs of $50,275 and $11,824 at September 30, 2024 and December 31, 2023, respectively) |  | 132,078 | 64,230
Investments in unconsolidated joint ventures |  | 1,421,886 | 1,377,319
Total assets |  | 26,167,742 | 25,783,251
Liabilities: |  |  |
Mortgage notes payable, net (amounts related to VIEs of $3,280,817 and $3,277,185 at September 30, 2024 and December 31, 2023, respectively) |  | 4,275,155 | 4,166,379
Unsecured senior notes, net |  | 10,642,033 | 10,491,617
Unsecured line of credit |  | 0 | 0
Unsecured term loans, net |  | 798,058 | 1,198,301
Unsecured commercial paper |  | 500,000 | 0
Lease liabilities - finance leases (amounts related to VIEs of $20,897 and $20,794 at September 30, 2024 and December 31, 2023, respectively) |  | 373,260 | 417,961
Lease liabilities - operating leases (amounts related to VIEs of $154,637 and $145,826 at September 30, 2024 and December 31, 2023, respectively) |  | 389,444 | 350,391
Accounts payable and accrued expenses (amounts related to VIEs of $120,092 and $59,667 at September 30, 2024 and December 31, 2023, respectively) |  | 444,288 | 458,329
Dividends and distributions payable |  | 172,191 | 171,176
Accrued interest payable |  | 121,360 | 133,684
Other liabilities (amounts related to VIEs of $89,876 and $115,275 at September 30, 2024 and December 31, 2023, respectively) |  | 407,441 | 445,947
Total liabilities |  | 18,123,230 | 17,833,785
Redeemable deferred stock units— 132,930 and 119,471 units outstanding at redemption value at September 30, 2024 and December 31, 2023, respectively |  | 10,696 | 8,383
Noncontrolling interest: |  |  |
Redeemable partnership units— 15,926,014 and 16,508,277 common units and 2,336,797 and 2,065,861 long term incentive units outstanding at redemption value at September 30, 2024 and December 31, 2023, respectively |  | 1,500,501 | 1,347,575
Equity / Capital: |  |  |
Boston Properties Limited Partnership partners’ capital— 1,762,427 and 1,755,150 general partner units and 156,217,471 and 155,185,716 limited partner units outstanding at September 30, 2024 and December 31, 2023, respectively |  | 4,685,471 | 4,973,951
Accumulated other comprehensive loss |  | (26,428) | (21,147)
Total partners’ capital |  | 4,659,043 | 4,952,804
Noncontrolling interests in property partnerships |  | 1,874,272 | 1,640,704
Noncontrolling interests: |  |  |
Total equity / capital |  | 6,533,315 | 6,593,508
Total liabilities and equity / capital |  | 26,167,742 | 25,783,251
Boston Properties Limited Partnership | Related Party |  |  |
ASSETS |  |  |
Related party notes receivable, net |  | 88,788 | 88,779
Boston Properties Limited Partnership | Variable Interest Entity, Primary Beneficiary [Member] |  |  |
ASSETS |  |  |
Real estate, at cost (amounts related to variable interest entities (“VIEs”) of $7,646,435 and $7,054,075 at September 30, 2024 and December 31, 2023, respectively) |  | 7,646,435 | 7,054,075
Right of use assets - finance leases (amounts related to VIEs of $21,000 and $21,000 at September 30, 2024 and December 31, 2023, respectively) |  | 21,000 | 21,000
Right of use assets - operating leases (amounts related to VIEs of $145,052 and $158,885 at September 30, 2024 and December 31, 2023, respectively) |  | 145,052 | 158,885
Less: accumulated depreciation (amounts related to VIEs of $(1,601,919) and $(1,501,483) at September 30, 2024 and December 31, 2023, respectively) |  | (1,601,919) | (1,501,483)
Cash and cash equivalents (amounts related to VIEs of $322,604 and $245,317 at September 30, 2024 and December 31, 2023, respectively) |  | 322,604 | 245,317
Cash held in escrows (amounts related to VIEs of $5,032 and $22,160 at September 30, 2024 and December 31, 2023, respectively) |  | 5,032 | 22,160
Tenant and other receivables, net (amounts related to VIEs of $19,216 and $27,987 at September 30, 2024 and December 31, 2023, respectively) |  | 19,216 | 27,987
Accrued rental income, net (amounts related to VIEs of $425,867 and $401,159 at September 30, 2024 and December 31, 2023, respectively) |  | 425,867 | 401,159
Deferred charges, net (amounts related to VIEs of $201,947 and $175,383 at September 30, 2024 and December 31, 2023, respectively) |  | 201,947 | 175,383
Prepaid expenses and other assets (amounts related to VIEs of $50,275 and $11,824 at September 30, 2024 and December 31, 2023, respectively) |  | 50,275 | 11,824
Liabilities: |  |  |
Mortgage notes payable, net (amounts related to VIEs of $3,280,817 and $3,277,185 at September 30, 2024 and December 31, 2023, respectively) |  | 3,280,817 | 3,277,185
Lease liabilities - finance leases (amounts related to VIEs of $20,897 and $20,794 at September 30, 2024 and December 31, 2023, respectively) |  | 20,897 | 20,794
Lease liabilities - operating leases (amounts related to VIEs of $154,637 and $145,826 at September 30, 2024 and December 31, 2023, respectively) |  | 154,637 | 145,826
Accounts payable and accrued expenses (amounts related to VIEs of $120,092 and $59,667 at September 30, 2024 and December 31, 2023, respectively) |  | 120,092 | 59,667
Other liabilities (amounts related to VIEs of $89,876 and $115,275 at September 30, 2024 and December 31, 2023, respectively) |  | $ 89,876 | $ 115,275
[1] | See Note 4.

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