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Real Estate (Tables)
 12 Months Ended
Dec. 31, 2023
Real Estate Properties [Line Items]  
Schedule of Real Estate Properties
BXP
Real estate consisted of the following at December 31, 2023 and December 31, 2022 (in thousands):
December 31, 2023December 31, 2022
Land$5,251,224 $5,189,811 
Right of use assets - finance leases (1)401,680 237,510 
Right of use assets - operating leases (1)324,298 167,351 
Land held for future development (2)697,061 721,501 
Buildings and improvements16,607,756 15,820,724 
Tenant improvements3,592,172 3,200,743 
Furniture, fixtures and equipment53,716 50,310 
Construction in progress547,280 406,574 
Total27,475,187 25,794,524 
Less: Accumulated depreciation(6,881,728)(6,298,082)
$20,593,459 $19,496,442 
_______________
(1)See Note 4.
(2)Includes pre-development costs.
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense The following table summarizes the scheduled amortization of the Company’s acquired “above-” and “below-market” lease intangibles for each of the five succeeding years (in thousands).
Acquired Above-Market Lease IntangiblesAcquired Below-Market Lease Intangibles
2024$3,985 $9,961 
20251,880 9,756 
2026982 8,602 
2027743 5,432 
2028605 2,125 
Santa Monica Business Park [Member]  
Real Estate Properties [Line Items]  
Asset Acquisition
The following table summarizes the allocation of the relative fair value of the net assets the Company received at the date of acquisition for Santa Monica Business Park (in thousands):
Land and site improvements$46,360 
Building and improvements390,305 
Tenant improvements20,116 
In-place lease intangibles74,022 
Above-market lease intangibles6,715 
Below-market lease intangibles(4,630)
Ground lease intangible(46,659)
Mortgage note payable adjustment4,491 
Net assets acquired$490,720 
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense
The following table summarizes the estimated annual amortization of the acquired in-place lease intangibles, acquired ground lease intangible and the acquired above- and below-market lease intangibles for Santa Monica Business Park for each of the five succeeding fiscal years (in thousands):
Acquired In-Place Lease Intangibles Acquired Ground Lease IntangibleAcquired Above-Market Lease Intangibles Acquired Below-Market Lease Intangible
2024$32,362 $10,979 $3,584 $1,109 
202520,782 10,979 1,491 944 
20267,986 10,979 593 910 
20274,078 10,979 354 910 
20282,726 2,193 216 553 
Schedule of Acquired Finite-Lived Intangible Assets by Major Class
The following table summarizes the weighted-average useful life of the acquired in-place lease intangibles, acquired ground lease intangible and the acquired above- and below-market lease intangibles for Santa Monica Business Park as of the acquisition (in years):
Acquired In-Place Lease Intangibles Acquired Ground Lease IntangibleAcquired Above-Market Lease Intangibles Acquired Below-Market Lease Intangible
Weighted-average useful life2.94.22.35.1
Boston Properties Limited Partnership  
Real Estate Properties [Line Items]  
Schedule of Real Estate Properties
BPLP
Real estate consisted of the following at December 31, 2023 and December 31, 2022 (in thousands):
December 31, 2023December 31, 2022
Land$5,156,515 $5,095,102 
Right of use assets - finance leases (1)401,680 237,510 
Right of use assets - operating leases (1)324,298 167,351 
Land held for future development (2)697,061 721,501 
Buildings and improvements16,336,200 15,547,919 
Tenant improvements3,592,172 3,200,743 
Furniture, fixtures and equipment53,716 50,310 
Construction in progress547,280 406,574 
Total27,108,922 25,427,010 
Less: Accumulated depreciation(6,758,361)(6,180,474)
$20,350,561 $19,246,536 
_______________
(1)See Note 4.
(2)Includes pre-development costs.