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Real Estate (Tables)
3 Months Ended
Mar. 31, 2021
Real Estate Properties [Line Items]  
Schedule of Real Estate Properties
Boston Properties, Inc.
Real estate consisted of the following at March 31, 2021 and December 31, 2020 (in thousands):
March 31, 2021December 31, 2020
Land$5,068,843 $5,069,206 
Right of use assets - finance leases237,017 237,393 
Right of use assets - operating leases144,143 146,406 
Land held for future development (1)421,349 450,954 
Buildings and improvements14,004,418 13,777,691 
Tenant improvements2,816,726 2,752,880 
Furniture, fixtures and equipment51,549 49,606 
Construction in progress794,039 868,773 
Total23,538,084 23,352,909 
Less: Accumulated depreciation(5,665,061)(5,534,102)
$17,873,023 $17,818,807 
_______________
(1)Includes pre-development costs.
Boston Properties Limited Partnership  
Real Estate Properties [Line Items]  
Schedule of Real Estate Properties
Boston Properties Limited Partnership
Real estate consisted of the following at March 31, 2021 and December 31, 2020 (in thousands):
March 31, 2021December 31, 2020
Land$4,971,990 $4,971,990 
Right of use assets - finance leases237,017 237,393 
Right of use assets - operating leases144,143 146,406 
Land held for future development (1)421,349 450,954 
Buildings and improvements13,725,776 13,498,098 
Tenant improvements2,816,726 2,752,880 
Furniture, fixtures and equipment51,549 49,606 
Construction in progress794,039 868,773 
Total23,162,589 22,976,100 
Less: Accumulated depreciation(5,557,784)(5,428,576)
$17,604,805 $17,547,524 
_______________
(1)Includes pre-development costs.