XML 129 R106.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Real Estate and Accumulated Depreciation Schedule of Real Estate and Accumulated Depreciation (BPLP) (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2017 | Dec. 31, 2016
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Encumbrances | [1] | $ 2,979,281 |
Original Land |  | 4,762,002 |
Original Building |  | 11,634,050 |
Costs Capitalized Subsequent to Acquisition |  | 4,662,662 |
Land and improvements |  | 5,080,679 |
Buildings and Improvements |  | 14,503,772 |
Land Held for Development | [2] | 204,925 |
Development and Construction in Progress |  | 1,269,338 |
Total |  | 21,058,714 |
Accumulated Depreciation |  | 4,566,570 |
Furniture, fixtures and equipment |  | 37,928 | $ 32,687
Furniture, fixtures and equipment accumulated depreciation |  | 23,064 |
Real Estate Aggregate Cost For Tax Purposes |  | 17,300,000 |
Real Estate Aggregate Accumulated Depreciation For Tax Purposes |  | $ 3,600,000 |
Real Estate and Accumulated Depreciation, Life Used for Depreciation |  | 40 years |
Unamortized deferred finance costs |  | $ (34,680) |
767 Fifth Avenue (the General Motors Building) |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 767 Fifth Avenue (the General Motors Building) |
Type |  | Office |
Location |  | New York, NY |
Encumbrances |  | $ 2,267,041 |
Original Land |  | 1,796,252 |
Original Building |  | 1,532,654 |
Costs Capitalized Subsequent to Acquisition |  | 135,559 |
Land and improvements |  | 1,796,252 |
Buildings and Improvements |  | 1,668,213 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 3,464,465 |
Accumulated Depreciation |  | $ 222,981 |
Year(s) Built / Renovated |  | 1968 |
Year(s) Acquired |  | 2013 |
Depreciable Lives (Years) | [3] | -1 |
Prudential Center |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | Prudential Center |
Type |  | Office |
Location |  | Boston, MA |
Encumbrances |  | $ 0 |
Original Land |  | 92,077 |
Original Building |  | 948,357 |
Costs Capitalized Subsequent to Acquisition |  | 501,709 |
Land and improvements |  | 115,638 |
Buildings and Improvements |  | 1,426,505 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 1,542,143 |
Accumulated Depreciation |  | $ 511,605 |
Year(s) Built / Renovated |  | 1965/1993/2002/2016-2017 |
Year(s) Acquired |  | 1998/1999/2000 |
Depreciable Lives (Years) | [3] | -1 |
Embarcadero Center |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | Embarcadero Center |
Type |  | Office |
Location |  | San Francisco, CA |
Encumbrances |  | $ 0 |
Original Land |  | 179,697 |
Original Building |  | 847,410 |
Costs Capitalized Subsequent to Acquisition |  | 366,780 |
Land and improvements |  | 195,987 |
Buildings and Improvements |  | 1,197,900 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 1,393,887 |
Accumulated Depreciation |  | $ 596,100 |
Year(s) Built / Renovated |  | 1970/1989 |
Year(s) Acquired |  | 1998-1999 |
Depreciable Lives (Years) | [3] | -1 |
399 Park Avenue |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 399 Park Avenue |
Type |  | Office |
Location |  | New York, NY |
Encumbrances |  | $ 0 |
Original Land |  | 339,200 |
Original Building |  | 700,358 |
Costs Capitalized Subsequent to Acquisition |  | 181,418 |
Land and improvements |  | 354,107 |
Buildings and Improvements |  | 866,869 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 1,220,976 |
Accumulated Depreciation |  | $ 310,262 |
Year(s) Built / Renovated |  | 1961 |
Year(s) Acquired |  | 2002 |
Depreciable Lives (Years) | [3] | -1 |
200 Clarendon Street and Garage |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 200 Clarendon Street and Garage |
Type |  | Office |
Location |  | Boston, MA |
Encumbrances |  | $ 0 |
Original Land |  | 219,543 |
Original Building |  | 667,884 |
Costs Capitalized Subsequent to Acquisition |  | 139,189 |
Land and improvements |  | 219,616 |
Buildings and Improvements |  | 799,991 |
Land Held for Development |  | 7,009 |
Development and Construction in Progress |  | 0 |
Total |  | 1,026,616 |
Accumulated Depreciation |  | $ 161,471 |
Year(s) Built / Renovated |  | 1976 |
Year(s) Acquired |  | 2010 |
Depreciable Lives (Years) | [3] | -1 |
601 Lexington Avenue |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 601 Lexington Avenue |
Type |  | Office |
Location |  | New York, NY |
Encumbrances |  | $ 672,142 |
Original Land |  | 241,600 |
Original Building |  | 494,782 |
Costs Capitalized Subsequent to Acquisition |  | 290,590 |
Land and improvements |  | 289,639 |
Buildings and Improvements |  | 634,134 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 103,199 |
Total |  | 1,026,972 |
Accumulated Depreciation |  | $ 254,932 |
Year(s) Built / Renovated |  | 1977/1997 |
Year(s) Acquired |  | 2001 |
Depreciable Lives (Years) | [3] | -1 |
250 West 55th Street |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 250 West 55th Street |
Type |  | Office |
Location |  | New York, NY |
Encumbrances |  | $ 0 |
Original Land |  | 285,263 |
Original Building |  | 603,167 |
Costs Capitalized Subsequent to Acquisition |  | 43,296 |
Land and improvements |  | 285,263 |
Buildings and Improvements |  | 646,463 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 931,726 |
Accumulated Depreciation |  | $ 72,058 |
Year(s) Built / Renovated |  | 2014 |
Year(s) Acquired |  | 2007 |
Depreciable Lives (Years) | [3] | -1 |
100 Federal Street |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 100 Federal Street |
Type |  | Office |
Location |  | Boston, MA |
Encumbrances |  | $ 0 |
Original Land |  | 131,067 |
Original Building |  | 435,954 |
Costs Capitalized Subsequent to Acquisition |  | 79,035 |
Land and improvements |  | 131,067 |
Buildings and Improvements |  | 514,989 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 646,056 |
Accumulated Depreciation |  | $ 97,630 |
Year(s) Built / Renovated |  | 1971-1975/2017 |
Year(s) Acquired |  | 2012 |
Depreciable Lives (Years) | [3] | -1 |
Carnegie Center |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | Carnegie Center |
Type |  | Office |
Location |  | Princeton, NJ |
Encumbrances |  | $ 0 |
Original Land |  | 107,997 |
Original Building |  | 389,359 |
Costs Capitalized Subsequent to Acquisition |  | 157,960 |
Land and improvements |  | 108,948 |
Buildings and Improvements |  | 543,514 |
Land Held for Development |  | 2,854 |
Development and Construction in Progress |  | 0 |
Total |  | 655,316 |
Accumulated Depreciation |  | $ 228,171 |
Year(s) Built / Renovated |  | 1983-2016 |
Year(s) Acquired |  | 1998/1999/2000/2007/2014/2017 |
Depreciable Lives (Years) | [3] | -1 |
Times Square Tower |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | Times Square Tower |
Type |  | Office |
Location |  | New York, NY |
Encumbrances |  | $ 0 |
Original Land |  | 165,413 |
Original Building |  | 380,438 |
Costs Capitalized Subsequent to Acquisition |  | 87,050 |
Land and improvements |  | 169,193 |
Buildings and Improvements |  | 463,708 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 632,901 |
Accumulated Depreciation |  | $ 191,435 |
Year(s) Built / Renovated |  | 2004 |
Year(s) Acquired |  | 2000 |
Depreciable Lives (Years) | [3] | -1 |
Atlantic Wharf |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | Atlantic Wharf |
Type |  | Office |
Location |  | Boston, MA |
Encumbrances |  | $ 0 |
Original Land |  | 63,988 |
Original Building |  | 454,537 |
Costs Capitalized Subsequent to Acquisition |  | 17,473 |
Land and improvements |  | 63,988 |
Buildings and Improvements |  | 472,010 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 535,998 |
Accumulated Depreciation |  | $ 101,525 |
Year(s) Built / Renovated |  | 2011 |
Year(s) Acquired |  | 2007 |
Depreciable Lives (Years) | [3] | -1 |
Fountain Square |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | Fountain Square |
Type |  | Office |
Location |  | Reston, VA |
Encumbrances |  | $ 0 |
Original Land |  | 56,853 |
Original Building |  | 306,298 |
Costs Capitalized Subsequent to Acquisition |  | 17,834 |
Land and improvements |  | 56,853 |
Buildings and Improvements |  | 320,474 |
Land Held for Development |  | 3,658 |
Development and Construction in Progress |  | 0 |
Total |  | 380,985 |
Accumulated Depreciation |  | $ 60,098 |
Year(s) Built / Renovated |  | 1986-1990 |
Year(s) Acquired |  | 2012 |
Depreciable Lives (Years) | [3] | -1 |
510 Madison Avenue |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 510 Madison Avenue |
Type |  | Office |
Location |  | New York, NY |
Encumbrances |  | $ 0 |
Original Land |  | 103,000 |
Original Building |  | 253,665 |
Costs Capitalized Subsequent to Acquisition |  | 23,875 |
Land and improvements |  | 103,000 |
Buildings and Improvements |  | 277,540 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 380,540 |
Accumulated Depreciation |  | $ 54,056 |
Year(s) Built / Renovated |  | 2012 |
Year(s) Acquired |  | 2010 |
Depreciable Lives (Years) | [3] | -1 |
599 Lexington Avenue |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 599 Lexington Avenue |
Type |  | Office |
Location |  | New York, NY |
Encumbrances |  | $ 0 |
Original Land |  | 81,040 |
Original Building |  | 100,507 |
Costs Capitalized Subsequent to Acquisition |  | 165,350 |
Land and improvements |  | 87,852 |
Buildings and Improvements |  | 259,045 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 346,897 |
Accumulated Depreciation |  | $ 165,739 |
Year(s) Built / Renovated |  | 1986 |
Year(s) Acquired |  | 1997 |
Depreciable Lives (Years) | [3] | -1 |
680 Folsom Street |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 680 Folsom Street |
Type |  | Office |
Location |  | San Francisco, CA |
Encumbrances |  | $ 0 |
Original Land |  | 72,545 |
Original Building |  | 219,766 |
Costs Capitalized Subsequent to Acquisition |  | 7,545 |
Land and improvements |  | 72,545 |
Buildings and Improvements |  | 227,311 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 299,856 |
Accumulated Depreciation |  | $ 30,577 |
Year(s) Built / Renovated |  | 2014 |
Year(s) Acquired |  | 2012 |
Depreciable Lives (Years) | [3] | -1 |
South of Market and Democracy Tower |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | South of Market and Democracy Tower |
Type |  | Office |
Location |  | Reston, VA |
Encumbrances |  | $ 0 |
Original Land |  | 13,603 |
Original Building |  | 237,479 |
Costs Capitalized Subsequent to Acquisition |  | 14,991 |
Land and improvements |  | 13,687 |
Buildings and Improvements |  | 252,386 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 266,073 |
Accumulated Depreciation |  | $ 87,711 |
Year(s) Built / Renovated |  | 2008-2009 |
Year(s) Acquired |  | 2003 |
Depreciable Lives (Years) | [3] | -1 |
601 Massachusetts Avenue |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 601 Massachusetts Avenue |
Type |  | Office |
Location |  | Washington, DC |
Encumbrances |  | $ 0 |
Original Land |  | 95,310 |
Original Building |  | 165,173 |
Costs Capitalized Subsequent to Acquisition |  | 2,353 |
Land and improvements |  | 95,322 |
Buildings and Improvements |  | 167,514 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 262,836 |
Accumulated Depreciation |  | $ 12,177 |
Year(s) Built / Renovated |  | 2016 |
Year(s) Acquired |  | 2008 |
Depreciable Lives (Years) | [3] | -1 |
Bay Colony Corporate Center |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | Bay Colony Corporate Center |
Type |  | Office |
Location |  | Waltham, MA |
Encumbrances |  | $ 0 |
Original Land |  | 18,789 |
Original Building |  | 148,451 |
Costs Capitalized Subsequent to Acquisition |  | 73,418 |
Land and improvements |  | 18,789 |
Buildings and Improvements |  | 221,869 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 240,658 |
Accumulated Depreciation |  | $ 57,320 |
Year(s) Built / Renovated |  | 1985-1989 |
Year(s) Acquired |  | 2011 |
Depreciable Lives (Years) | [3] | -1 |
Gateway Center |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | Gateway Center |
Type |  | Office |
Location |  | San Francisco, CA |
Encumbrances |  | $ 0 |
Original Land |  | 28,255 |
Original Building |  | 139,245 |
Costs Capitalized Subsequent to Acquisition |  | 59,019 |
Land and improvements |  | 30,627 |
Buildings and Improvements |  | 195,892 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 226,519 |
Accumulated Depreciation |  | $ 102,634 |
Year(s) Built / Renovated |  | 1984/1986/2002 |
Year(s) Acquired |  | 1999 |
Depreciable Lives (Years) | [3] | -1 |
535 Mission Street |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 535 Mission Street |
Type |  | Office |
Location |  | San Francisco, CA |
Encumbrances |  | $ 0 |
Original Land |  | 40,933 |
Original Building |  | 148,378 |
Costs Capitalized Subsequent to Acquisition |  | 3,259 |
Land and improvements |  | 40,933 |
Buildings and Improvements |  | 151,637 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 192,570 |
Accumulated Depreciation |  | $ 14,637 |
Year(s) Built / Renovated |  | 2015 |
Year(s) Acquired |  | 2013 |
Depreciable Lives (Years) | [3] | -1 |
2200 Pennsylvania Avenue |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 2200 Pennsylvania Avenue |
Type |  | Office |
Location |  | Washington, DC |
Encumbrances |  | $ 0 |
Original Land |  | 0 |
Original Building |  | 183,541 |
Costs Capitalized Subsequent to Acquisition |  | 4,907 |
Land and improvements |  | 0 |
Buildings and Improvements |  | 188,448 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 188,448 |
Accumulated Depreciation |  | $ 46,780 |
Year(s) Built / Renovated |  | 2011 |
Year(s) Acquired |  | 2008 |
Depreciable Lives (Years) | [3] | -1 |
Mountain View Research Park |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | Mountain View Research Park |
Type |  | Office |
Location |  | Mountain View, CA |
Encumbrances |  | $ 0 |
Original Land |  | 95,066 |
Original Building |  | 68,373 |
Costs Capitalized Subsequent to Acquisition |  | 8,136 |
Land and improvements |  | 95,066 |
Buildings and Improvements |  | 76,509 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 171,575 |
Accumulated Depreciation |  | $ 15,146 |
Year(s) Built / Renovated |  | 1977-1981/2007-2013 |
Year(s) Acquired |  | 2013 |
Depreciable Lives (Years) | [3] | -1 |
Reservoir Place |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | Reservoir Place |
Type |  | Office |
Location |  | Waltham, MA |
Encumbrances |  | $ 0 |
Original Land |  | 18,605 |
Original Building |  | 104,124 |
Costs Capitalized Subsequent to Acquisition |  | 43,255 |
Land and improvements |  | 20,108 |
Buildings and Improvements |  | 145,876 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 165,984 |
Accumulated Depreciation |  | $ 66,230 |
Year(s) Built / Renovated |  | 1955/1987/2017 |
Year(s) Acquired |  | 1997/1998 |
Depreciable Lives (Years) | [3] | -1 |
1330 Connecticut Avenue |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 1330 Connecticut Avenue |
Type |  | Office |
Location |  | Washington, DC |
Encumbrances |  | $ 0 |
Original Land |  | 25,982 |
Original Building |  | 82,311 |
Costs Capitalized Subsequent to Acquisition |  | 32,839 |
Land and improvements |  | 27,135 |
Buildings and Improvements |  | 113,997 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 141,132 |
Accumulated Depreciation |  | $ 22,530 |
Year(s) Built / Renovated |  | 1984 |
Year(s) Acquired |  | 2004 |
Depreciable Lives (Years) | [3] | -1 |
Kingstowne Towne Center |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | Kingstowne Towne Center |
Type |  | Office |
Location |  | Alexandria, VA |
Encumbrances |  | $ 0 |
Original Land |  | 18,021 |
Original Building |  | 109,038 |
Costs Capitalized Subsequent to Acquisition |  | 1,371 |
Land and improvements |  | 18,062 |
Buildings and Improvements |  | 110,368 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 128,430 |
Accumulated Depreciation |  | $ 39,048 |
Year(s) Built / Renovated |  | 2003-2006 |
Year(s) Acquired |  | 2007 |
Depreciable Lives (Years) | [3] | -1 |
1333 New Hampshire Avenue |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 1333 New Hampshire Avenue |
Type |  | Office |
Location |  | Washington, DC |
Encumbrances |  | $ 0 |
Original Land |  | 34,032 |
Original Building |  | 85,660 |
Costs Capitalized Subsequent to Acquisition |  | 11,473 |
Land and improvements |  | 35,382 |
Buildings and Improvements |  | 95,783 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 131,165 |
Accumulated Depreciation |  | $ 40,499 |
Year(s) Built / Renovated |  | 1996 |
Year(s) Acquired |  | 2003 |
Depreciable Lives (Years) | [3] | -1 |
One Freedom Square |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | One Freedom Square |
Type |  | Office |
Location |  | Reston, VA |
Encumbrances |  | $ 0 |
Original Land |  | 9,929 |
Original Building |  | 84,504 |
Costs Capitalized Subsequent to Acquisition |  | 32,618 |
Land and improvements |  | 11,293 |
Buildings and Improvements |  | 115,758 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 127,051 |
Accumulated Depreciation |  | $ 50,313 |
Year(s) Built / Renovated |  | 2000 |
Year(s) Acquired |  | 2003 |
Depreciable Lives (Years) | [3] | -1 |
Weston Corporate Center |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | Weston Corporate Center |
Type |  | Office |
Location |  | Weston, MA |
Encumbrances |  | $ 0 |
Original Land |  | 25,753 |
Original Building |  | 92,312 |
Costs Capitalized Subsequent to Acquisition |  | (123) |
Land and improvements |  | 25,854 |
Buildings and Improvements |  | 92,088 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 117,942 |
Accumulated Depreciation |  | $ 23,125 |
Year(s) Built / Renovated |  | 2010 |
Year(s) Acquired |  | 2001 |
Depreciable Lives (Years) | [3] | -1 |
Capital Gallery |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | Capital Gallery |
Type |  | Office |
Location |  | Washington, DC |
Encumbrances |  | $ 0 |
Original Land |  | 4,725 |
Original Building |  | 29,565 |
Costs Capitalized Subsequent to Acquisition |  | 89,514 |
Land and improvements |  | 8,662 |
Buildings and Improvements |  | 115,142 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 123,804 |
Accumulated Depreciation |  | $ 66,009 |
Year(s) Built / Renovated |  | 1981/2006 |
Year(s) Acquired |  | 2007 |
Depreciable Lives (Years) | [3] | -1 |
Two Freedom Square |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | Two Freedom Square |
Type |  | Office |
Location |  | Reston, VA |
Encumbrances |  | $ 0 |
Original Land |  | 13,930 |
Original Building |  | 77,739 |
Costs Capitalized Subsequent to Acquisition |  | 23,379 |
Land and improvements |  | 15,420 |
Buildings and Improvements |  | 99,628 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 115,048 |
Accumulated Depreciation |  | $ 47,936 |
Year(s) Built / Renovated |  | 2001 |
Year(s) Acquired |  | 2003 |
Depreciable Lives (Years) | [3] | -1 |
One and Two Reston Overlook |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | One and Two Reston Overlook |
Type |  | Office |
Location |  | Reston, VA |
Encumbrances |  | $ 0 |
Original Land |  | 16,456 |
Original Building |  | 66,192 |
Costs Capitalized Subsequent to Acquisition |  | 25,111 |
Land and improvements |  | 16,179 |
Buildings and Improvements |  | 91,580 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 107,759 |
Accumulated Depreciation |  | $ 44,626 |
Year(s) Built / Renovated |  | 1999 |
Year(s) Acquired |  | 2000 |
Depreciable Lives (Years) | [3] | -1 |
Discovery Square |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | Discovery Square |
Type |  | Office |
Location |  | Reston, VA |
Encumbrances |  | $ 0 |
Original Land |  | 11,198 |
Original Building |  | 71,782 |
Costs Capitalized Subsequent to Acquisition |  | 24,414 |
Land and improvements |  | 12,533 |
Buildings and Improvements |  | 94,861 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 107,394 |
Accumulated Depreciation |  | $ 43,184 |
Year(s) Built / Renovated |  | 2001 |
Year(s) Acquired |  | 2003 |
Depreciable Lives (Years) | [3] | -1 |
355 Main Street |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 355 Main Street |
Type |  | Office |
Location |  | Cambridge, MA |
Encumbrances |  | $ 0 |
Original Land |  | 18,863 |
Original Building |  | 53,346 |
Costs Capitalized Subsequent to Acquisition |  | 27,450 |
Land and improvements |  | 21,173 |
Buildings and Improvements |  | 78,486 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 99,659 |
Accumulated Depreciation |  | $ 26,915 |
Year(s) Built / Renovated |  | 1981/1996/2013 |
Year(s) Acquired |  | 2006 |
Depreciable Lives (Years) | [3] | -1 |
140 Kendrick Street |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 140 Kendrick Street |
Type |  | Office |
Location |  | Needham, MA |
Encumbrances |  | $ 0 |
Original Land |  | 18,095 |
Original Building |  | 66,905 |
Costs Capitalized Subsequent to Acquisition |  | 17,492 |
Land and improvements |  | 19,092 |
Buildings and Improvements |  | 83,400 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 102,492 |
Accumulated Depreciation |  | $ 29,013 |
Year(s) Built / Renovated |  | 2000 |
Year(s) Acquired |  | 2004 |
Depreciable Lives (Years) | [3] | -1 |
10 CityPoint |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 10 CityPoint |
Type |  | Office |
Location |  | Waltham, MA |
Encumbrances |  | $ 0 |
Original Land |  | 1,953 |
Original Building |  | 85,752 |
Costs Capitalized Subsequent to Acquisition |  | 2,833 |
Land and improvements |  | 2,116 |
Buildings and Improvements |  | 88,422 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 90,538 |
Accumulated Depreciation |  | $ 4,673 |
Year(s) Built / Renovated |  | 2016 |
Year(s) Acquired |  | 1997 |
Depreciable Lives (Years) | [3] | -1 |
90 Broadway |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 90 Broadway |
Type |  | Office |
Location |  | Cambridge, MA |
Encumbrances |  | $ 0 |
Original Land |  | 19,104 |
Original Building |  | 52,078 |
Costs Capitalized Subsequent to Acquisition |  | 17,180 |
Land and improvements |  | 20,785 |
Buildings and Improvements |  | 67,577 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 88,362 |
Accumulated Depreciation |  | $ 19,254 |
Year(s) Built / Renovated |  | 1983/1998/2013 |
Year(s) Acquired |  | 2006 |
Depreciable Lives (Years) | [3] | -1 |
230 CityPoint |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 230 CityPoint |
Type |  | Office |
Location |  | Waltham, MA |
Encumbrances |  | $ 0 |
Original Land |  | 13,189 |
Original Building |  | 49,823 |
Costs Capitalized Subsequent to Acquisition |  | 25,236 |
Land and improvements |  | 13,593 |
Buildings and Improvements |  | 74,655 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 88,248 |
Accumulated Depreciation |  | $ 26,562 |
Year(s) Built / Renovated |  | 1992 |
Year(s) Acquired |  | 2005 |
Depreciable Lives (Years) | [3] | -1 |
77 CityPoint |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 77 CityPoint |
Type |  | Office |
Location |  | Waltham, MA |
Encumbrances |  | $ 0 |
Original Land |  | 13,847 |
Original Building |  | 60,383 |
Costs Capitalized Subsequent to Acquisition |  | 5,703 |
Land and improvements |  | 13,873 |
Buildings and Improvements |  | 66,060 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 79,933 |
Accumulated Depreciation |  | $ 23,044 |
Year(s) Built / Renovated |  | 2008 |
Year(s) Acquired |  | 2001 |
Depreciable Lives (Years) | [3] | -1 |
Waltham Weston Corporate Center |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | Waltham Weston Corporate Center |
Type |  | Office |
Location |  | Waltham, MA |
Encumbrances |  | $ 0 |
Original Land |  | 10,385 |
Original Building |  | 60,694 |
Costs Capitalized Subsequent to Acquisition |  | 11,030 |
Land and improvements |  | 11,097 |
Buildings and Improvements |  | 71,012 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 82,109 |
Accumulated Depreciation |  | $ 30,036 |
Year(s) Built / Renovated |  | 2003 |
Year(s) Acquired |  | 1999 |
Depreciable Lives (Years) | [3] | -1 |
3625-3635 Peterson Way |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 3625-3635 Peterson Way |
Type |  | Office |
Location |  | Santa Clara, CA |
Encumbrances |  | $ 0 |
Original Land |  | 63,206 |
Original Building |  | 14,879 |
Costs Capitalized Subsequent to Acquisition |  | 138 |
Land and improvements |  | 63,206 |
Buildings and Improvements |  | 14,879 |
Land Held for Development |  | 138 |
Development and Construction in Progress |  | 0 |
Total |  | 78,223 |
Accumulated Depreciation |  | $ 5,120 |
Year(s) Built / Renovated |  | 1979 |
Year(s) Acquired |  | 2016 |
Depreciable Lives (Years) | [3] | -1 |
North First Business Park |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | North First Business Park |
Type |  | Office |
Location |  | San Jose, CA |
Encumbrances |  | $ 0 |
Original Land |  | 58,402 |
Original Building |  | 13,069 |
Costs Capitalized Subsequent to Acquisition |  | 4,416 |
Land and improvements |  | 23,377 |
Buildings and Improvements |  | 16,600 |
Land Held for Development |  | 35,910 |
Development and Construction in Progress |  | 0 |
Total |  | 75,887 |
Accumulated Depreciation |  | $ 15,839 |
Year(s) Built / Renovated |  | 1981 |
Year(s) Acquired |  | 2007 |
Depreciable Lives (Years) | [3] | -1 |
300 Binney Street |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 300 Binney Street |
Type |  | Office |
Location |  | Cambridge, MA |
Encumbrances |  | $ 0 |
Original Land |  | 18,080 |
Original Building |  | 51,262 |
Costs Capitalized Subsequent to Acquisition |  | 140 |
Land and improvements |  | 18,080 |
Buildings and Improvements |  | 51,402 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 69,482 |
Accumulated Depreciation |  | $ 7,755 |
Year(s) Built / Renovated |  | 2013 |
Year(s) Acquired |  | 2009 |
Depreciable Lives (Years) | [3] | (1) |
2440 West El Camino Real |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 2440 West El Camino Real |
Type |  | Office |
Location |  | Mountain View, CA |
Encumbrances |  | $ 0 |
Original Land |  | 16,741 |
Original Building |  | 51,285 |
Costs Capitalized Subsequent to Acquisition |  | 1,287 |
Land and improvements |  | 16,741 |
Buildings and Improvements |  | 52,572 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 69,313 |
Accumulated Depreciation |  | $ 10,790 |
Year(s) Built / Renovated |  | 1987/2003 |
Year(s) Acquired |  | 2011 |
Depreciable Lives (Years) | [3] | -1 |
Wisconsin Place |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | Wisconsin Place |
Type |  | Office |
Location |  | Chevy Chase, MD |
Encumbrances |  | $ 0 |
Original Land |  | 0 |
Original Building |  | 53,349 |
Costs Capitalized Subsequent to Acquisition |  | 14,907 |
Land and improvements |  | 0 |
Buildings and Improvements |  | 68,256 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 68,256 |
Accumulated Depreciation |  | $ 19,775 |
Year(s) Built / Renovated |  | 2009 |
Year(s) Acquired |  | 2004 |
Depreciable Lives (Years) | [3] | -1 |
Reston Corporate Center |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | Reston Corporate Center |
Type |  | Office |
Location |  | Reston, VA |
Encumbrances |  | $ 0 |
Original Land |  | 9,135 |
Original Building |  | 50,857 |
Costs Capitalized Subsequent to Acquisition |  | 6,236 |
Land and improvements |  | 10,148 |
Buildings and Improvements |  | 56,080 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 66,228 |
Accumulated Depreciation |  | $ 26,769 |
Year(s) Built / Renovated |  | 1984 |
Year(s) Acquired |  | 1998 |
Depreciable Lives (Years) | [3] | -1 |
New Dominion Technology Park, Bldg. Two |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | New Dominion Technology Park, Bldg. Two |
Type |  | Office |
Location |  | Herndon, VA |
Encumbrances |  | $ 0 |
Original Land |  | 5,584 |
Original Building |  | 51,868 |
Costs Capitalized Subsequent to Acquisition |  | 4,157 |
Land and improvements |  | 6,510 |
Buildings and Improvements |  | 55,099 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 61,609 |
Accumulated Depreciation |  | $ 23,652 |
Year(s) Built / Renovated |  | 2004 |
Year(s) Acquired |  | 1998 |
Depreciable Lives (Years) | [3] | -1 |
200 West Street |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 200 West Street |
Type |  | Office |
Location |  | Waltham, MA |
Encumbrances |  | $ 0 |
Original Land |  | 16,148 |
Original Building |  | 24,983 |
Costs Capitalized Subsequent to Acquisition |  | 10,673 |
Land and improvements |  | 16,813 |
Buildings and Improvements |  | 34,991 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 51,804 |
Accumulated Depreciation |  | $ 21,140 |
Year(s) Built / Renovated |  | 1999 |
Year(s) Acquired |  | 1997 |
Depreciable Lives (Years) | [3] | -1 |
New Dominion Technology Park, Bldg. One |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | New Dominion Technology Park, Bldg. One |
Type |  | Office |
Location |  | Herndon, VA |
Encumbrances |  | $ 32,691 |
Original Land |  | 3,880 |
Original Building |  | 43,227 |
Costs Capitalized Subsequent to Acquisition |  | 3,882 |
Land and improvements |  | 4,583 |
Buildings and Improvements |  | 46,406 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 50,989 |
Accumulated Depreciation |  | $ 25,940 |
Year(s) Built / Renovated |  | 2001 |
Year(s) Acquired |  | 1998 |
Depreciable Lives (Years) | [3] | -1 |
Sumner Square |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | Sumner Square |
Type |  | Office |
Location |  | Washington, DC |
Encumbrances |  | $ 0 |
Original Land |  | 624 |
Original Building |  | 28,745 |
Costs Capitalized Subsequent to Acquisition |  | 19,000 |
Land and improvements |  | 1,478 |
Buildings and Improvements |  | 46,891 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 48,369 |
Accumulated Depreciation |  | $ 23,570 |
Year(s) Built / Renovated |  | 1985 |
Year(s) Acquired |  | 1999 |
Depreciable Lives (Years) | [3] | -1 |
255 Main Street |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 255 Main Street |
Type |  | Office |
Location |  | Cambridge, MA |
Encumbrances |  | $ 0 |
Original Land |  | 134 |
Original Building |  | 25,110 |
Costs Capitalized Subsequent to Acquisition |  | 21,583 |
Land and improvements |  | 548 |
Buildings and Improvements |  | 46,279 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 46,827 |
Accumulated Depreciation |  | $ 28,250 |
Year(s) Built / Renovated |  | 1987 |
Year(s) Acquired |  | 1997 |
Depreciable Lives (Years) | [3] | -1 |
University Place |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | University Place |
Type |  | Office |
Location |  | Cambridge, MA |
Encumbrances |  | $ 7,407 |
Original Land |  | 0 |
Original Building |  | 37,091 |
Costs Capitalized Subsequent to Acquisition |  | 9,007 |
Land and improvements |  | 390 |
Buildings and Improvements |  | 45,708 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 46,098 |
Accumulated Depreciation |  | $ 26,295 |
Year(s) Built / Renovated |  | 1985 |
Year(s) Acquired |  | 1998 |
Depreciable Lives (Years) | [3] | -1 |
2600 Tower Oaks Boulevard |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 2600 Tower Oaks Boulevard |
Type |  | Office |
Location |  | Rockville, MD |
Encumbrances |  | $ 0 |
Original Land |  | 4,243 |
Original Building |  | 31,125 |
Costs Capitalized Subsequent to Acquisition |  | 9,867 |
Land and improvements |  | 4,785 |
Buildings and Improvements |  | 40,450 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 45,235 |
Accumulated Depreciation |  | $ 21,020 |
Year(s) Built / Renovated |  | 2001 |
Year(s) Acquired |  | 1998 |
Depreciable Lives (Years) | [3] | -1 |
Quorum Office Park |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | Quorum Office Park |
Type |  | Office |
Location |  | Chelmsford, MA |
Encumbrances |  | $ 0 |
Original Land |  | 3,750 |
Original Building |  | 32,454 |
Costs Capitalized Subsequent to Acquisition |  | 5,813 |
Land and improvements |  | 5,187 |
Buildings and Improvements |  | 36,830 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 42,017 |
Accumulated Depreciation |  | $ 16,594 |
Year(s) Built / Renovated |  | 2001 |
Year(s) Acquired |  | 2000 |
Depreciable Lives (Years) | [3] | -1 |
500 E Street |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 500 E Street |
Type |  | Office |
Location |  | Washington, DC |
Encumbrances |  | $ 0 |
Original Land |  | 109 |
Original Building |  | 22,420 |
Costs Capitalized Subsequent to Acquisition |  | 14,743 |
Land and improvements |  | 2,379 |
Buildings and Improvements |  | 34,893 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 37,272 |
Accumulated Depreciation |  | $ 23,781 |
Year(s) Built / Renovated |  | 1987 |
Year(s) Acquired |  | 1997 |
Depreciable Lives (Years) | [3] | -1 |
150 Broadway |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 150 Broadway |
Type |  | Office |
Location |  | Cambridge, MA |
Encumbrances |  | $ 0 |
Original Land |  | 850 |
Original Building |  | 25,042 |
Costs Capitalized Subsequent to Acquisition |  | 8,540 |
Land and improvements |  | 1,323 |
Buildings and Improvements |  | 33,109 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 34,432 |
Accumulated Depreciation |  | $ 16,933 |
Year(s) Built / Renovated |  | 1999 |
Year(s) Acquired |  | 1997 |
Depreciable Lives (Years) | [3] | -1 |
325 Main Street |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 325 Main Street |
Type |  | Office |
Location |  | Cambridge, MA |
Encumbrances |  | $ 0 |
Original Land |  | 174 |
Original Building |  | 12,200 |
Costs Capitalized Subsequent to Acquisition |  | 11,963 |
Land and improvements |  | 965 |
Buildings and Improvements |  | 23,372 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 24,337 |
Accumulated Depreciation |  | $ 12,852 |
Year(s) Built / Renovated |  | 1987/2013 |
Year(s) Acquired |  | 1997 |
Depreciable Lives (Years) | [3] | -1 |
105 Broadway |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 105 Broadway |
Type |  | Office |
Location |  | Cambridge, MA |
Encumbrances |  | $ 0 |
Original Land |  | 1,299 |
Original Building |  | 12,943 |
Costs Capitalized Subsequent to Acquisition |  | 8,214 |
Land and improvements |  | 2,395 |
Buildings and Improvements |  | 20,061 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 22,456 |
Accumulated Depreciation |  | $ 13,493 |
Year(s) Built / Renovated |  | 1990 |
Year(s) Acquired |  | 1997 |
Depreciable Lives (Years) | [3] | -1 |
Lexington Office Park |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | Lexington Office Park |
Type |  | Office |
Location |  | Lexington, MA |
Encumbrances |  | $ 0 |
Original Land |  | 998 |
Original Building |  | 1,426 |
Costs Capitalized Subsequent to Acquisition |  | 18,219 |
Land and improvements |  | 1,264 |
Buildings and Improvements |  | 19,379 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 20,643 |
Accumulated Depreciation |  | $ 13,404 |
Year(s) Built / Renovated |  | 1982 |
Year(s) Acquired |  | 1997 |
Depreciable Lives (Years) | [3] | -1 |
201 Spring Street |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 201 Spring Street |
Type |  | Office |
Location |  | Lexington, MA |
Encumbrances |  | $ 0 |
Original Land |  | 2,849 |
Original Building |  | 15,303 |
Costs Capitalized Subsequent to Acquisition |  | 694 |
Land and improvements |  | 3,124 |
Buildings and Improvements |  | 15,722 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 18,846 |
Accumulated Depreciation |  | $ 7,931 |
Year(s) Built / Renovated |  | 1997 |
Year(s) Acquired |  | 1997 |
Depreciable Lives (Years) | [3] | -1 |
The Point |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | The Point |
Type |  | Office |
Location |  | Waltham, MA |
Encumbrances |  | $ 0 |
Original Land |  | 6,395 |
Original Building |  | 10,040 |
Costs Capitalized Subsequent to Acquisition |  | 409 |
Land and improvements |  | 6,480 |
Buildings and Improvements |  | 10,364 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 16,844 |
Accumulated Depreciation |  | $ 714 |
Year(s) Built / Renovated |  | 2015 |
Year(s) Acquired |  | 2007 |
Depreciable Lives (Years) | [3] | -1 |
690 Folsom Street |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 690 Folsom Street |
Type |  | Office |
Location |  | San Francisco, CA |
Encumbrances |  | $ 0 |
Original Land |  | 3,219 |
Original Building |  | 11,038 |
Costs Capitalized Subsequent to Acquisition |  | 1,157 |
Land and improvements |  | 3,219 |
Buildings and Improvements |  | 12,195 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 15,414 |
Accumulated Depreciation |  | $ 1,295 |
Year(s) Built / Renovated |  | 2015 |
Year(s) Acquired |  | 2012 |
Depreciable Lives (Years) | [3] | -1 |
91 Hartwell Avenue |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 91 Hartwell Avenue |
Type |  | Office |
Location |  | Lexington, MA |
Encumbrances |  | $ 0 |
Original Land |  | 784 |
Original Building |  | 6,464 |
Costs Capitalized Subsequent to Acquisition |  | 8,269 |
Land and improvements |  | 941 |
Buildings and Improvements |  | 14,576 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 15,517 |
Accumulated Depreciation |  | $ 9,849 |
Year(s) Built / Renovated |  | 1985 |
Year(s) Acquired |  | 1997 |
Depreciable Lives (Years) | [3] | -1 |
92-100 Hayden Avenue |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 92-100 Hayden Avenue |
Type |  | Office |
Location |  | Lexington, MA |
Encumbrances |  | $ 0 |
Original Land |  | 594 |
Original Building |  | 6,748 |
Costs Capitalized Subsequent to Acquisition |  | 8,181 |
Land and improvements |  | 802 |
Buildings and Improvements |  | 14,721 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 15,523 |
Accumulated Depreciation |  | $ 12,495 |
Year(s) Built / Renovated |  | 1985 |
Year(s) Acquired |  | 1997 |
Depreciable Lives (Years) | [3] | -1 |
181 Spring Street |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 181 Spring Street |
Type |  | Office |
Location |  | Lexington, MA |
Encumbrances |  | $ 0 |
Original Land |  | 1,066 |
Original Building |  | 9,520 |
Costs Capitalized Subsequent to Acquisition |  | 2,318 |
Land and improvements |  | 1,160 |
Buildings and Improvements |  | 11,744 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 12,904 |
Accumulated Depreciation |  | $ 5,194 |
Year(s) Built / Renovated |  | 1999 |
Year(s) Acquired |  | 1997 |
Depreciable Lives (Years) | [3] | -1 |
195 West Street |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 195 West Street |
Type |  | Office |
Location |  | Waltham, MA |
Encumbrances |  | $ 0 |
Original Land |  | 1,611 |
Original Building |  | 6,652 |
Costs Capitalized Subsequent to Acquisition |  | 4,340 |
Land and improvements |  | 1,858 |
Buildings and Improvements |  | 10,745 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 12,603 |
Accumulated Depreciation |  | $ 7,963 |
Year(s) Built / Renovated |  | 1990 |
Year(s) Acquired |  | 1997 |
Depreciable Lives (Years) | [3] | -1 |
33 Hayden Avenue |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 33 Hayden Avenue |
Type |  | Office |
Location |  | Lexington, MA |
Encumbrances |  | $ 0 |
Original Land |  | 266 |
Original Building |  | 3,234 |
Costs Capitalized Subsequent to Acquisition |  | 8,381 |
Land and improvements |  | 425 |
Buildings and Improvements |  | 11,456 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 11,881 |
Accumulated Depreciation |  | $ 8,211 |
Year(s) Built / Renovated |  | 1979 |
Year(s) Acquired |  | 1997 |
Depreciable Lives (Years) | [3] | -1 |
7501 Boston Boulevard, Building Seven |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 7501 Boston Boulevard, Building Seven |
Type |  | Office |
Location |  | Springfield, VA |
Encumbrances |  | $ 0 |
Original Land |  | 665 |
Original Building |  | 9,273 |
Costs Capitalized Subsequent to Acquisition |  | 819 |
Land and improvements |  | 791 |
Buildings and Improvements |  | 9,966 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 10,757 |
Accumulated Depreciation |  | $ 4,848 |
Year(s) Built / Renovated |  | 1997 |
Year(s) Acquired |  | 1997 |
Depreciable Lives (Years) | [3] | -1 |
250 Binney Street |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 250 Binney Street |
Type |  | Office |
Location |  | Cambridge, MA |
Encumbrances |  | $ 0 |
Original Land |  | 110 |
Original Building |  | 4,483 |
Costs Capitalized Subsequent to Acquisition |  | 3,593 |
Land and improvements |  | 273 |
Buildings and Improvements |  | 7,913 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 8,186 |
Accumulated Depreciation |  | $ 5,066 |
Year(s) Built / Renovated |  | 1983 |
Year(s) Acquired |  | 1997 |
Depreciable Lives (Years) | [3] | -1 |
7435 Boston Boulevard, Building One |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 7435 Boston Boulevard, Building One |
Type |  | Office |
Location |  | Springfield, VA |
Encumbrances |  | $ 0 |
Original Land |  | 392 |
Original Building |  | 3,822 |
Costs Capitalized Subsequent to Acquisition |  | 3,997 |
Land and improvements |  | 659 |
Buildings and Improvements |  | 7,552 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 8,211 |
Accumulated Depreciation |  | $ 5,510 |
Year(s) Built / Renovated |  | 1982 |
Year(s) Acquired |  | 1997 |
Depreciable Lives (Years) | [3] | -1 |
8000 Grainger Court, Building Five |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 8000 Grainger Court, Building Five |
Type |  | Office |
Location |  | Springfield, VA |
Encumbrances |  | $ 0 |
Original Land |  | 366 |
Original Building |  | 4,282 |
Costs Capitalized Subsequent to Acquisition |  | 3,375 |
Land and improvements |  | 601 |
Buildings and Improvements |  | 7,422 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 8,023 |
Accumulated Depreciation |  | $ 5,644 |
Year(s) Built / Renovated |  | 1984 |
Year(s) Acquired |  | 1997 |
Depreciable Lives (Years) | [3] | -1 |
7450 Boston Boulevard, Building Three |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 7450 Boston Boulevard, Building Three |
Type |  | Office |
Location |  | Springfield, VA |
Encumbrances |  | $ 0 |
Original Land |  | 1,165 |
Original Building |  | 4,681 |
Costs Capitalized Subsequent to Acquisition |  | 1,773 |
Land and improvements |  | 1,430 |
Buildings and Improvements |  | 6,189 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 7,619 |
Accumulated Depreciation |  | $ 3,451 |
Year(s) Built / Renovated |  | 1987 |
Year(s) Acquired |  | 1998 |
Depreciable Lives (Years) | [3] | -1 |
453 Ravendale Drive |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 453 Ravendale Drive |
Type |  | Office |
Location |  | Mountain View, CA |
Encumbrances |  | $ 0 |
Original Land |  | 5,477 |
Original Building |  | 1,090 |
Costs Capitalized Subsequent to Acquisition |  | 408 |
Land and improvements |  | 5,477 |
Buildings and Improvements |  | 1,498 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 6,975 |
Accumulated Depreciation |  | $ 472 |
Year(s) Built / Renovated |  | 1977 |
Year(s) Acquired |  | 2012 |
Depreciable Lives (Years) | [3] | -1 |
17 Hartwell Avenue |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 17 Hartwell Avenue |
Type |  | Office |
Location |  | Lexington, MA |
Encumbrances |  | $ 0 |
Original Land |  | 26 |
Original Building |  | 150 |
Costs Capitalized Subsequent to Acquisition |  | 6,252 |
Land and improvements |  | 65 |
Buildings and Improvements |  | 6,363 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 6,428 |
Accumulated Depreciation |  | $ 1,098 |
Year(s) Built / Renovated |  | 1968 |
Year(s) Acquired |  | 1997 |
Depreciable Lives (Years) | [3] | -1 |
7300 Boston Boulevard, Building Thirteen |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 7300 Boston Boulevard, Building Thirteen |
Type |  | Office |
Location |  | Springfield, VA |
Encumbrances |  | $ 0 |
Original Land |  | 608 |
Original Building |  | 4,773 |
Costs Capitalized Subsequent to Acquisition |  | 709 |
Land and improvements |  | 661 |
Buildings and Improvements |  | 5,429 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 6,090 |
Accumulated Depreciation |  | $ 2,785 |
Year(s) Built / Renovated |  | 2002 |
Year(s) Acquired |  | 1997 |
Depreciable Lives (Years) | [3] | -1 |
7601 Boston Boulevard, Building Eight |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 7601 Boston Boulevard, Building Eight |
Type |  | Office |
Location |  | Springfield, VA |
Encumbrances |  | $ 0 |
Original Land |  | 200 |
Original Building |  | 878 |
Costs Capitalized Subsequent to Acquisition |  | 5,052 |
Land and improvements |  | 551 |
Buildings and Improvements |  | 5,579 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 6,130 |
Accumulated Depreciation |  | $ 4,263 |
Year(s) Built / Renovated |  | 1986 |
Year(s) Acquired |  | 1997 |
Depreciable Lives (Years) | [3] | -1 |
7500 Boston Boulevard, Building Six |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 7500 Boston Boulevard, Building Six |
Type |  | Office |
Location |  | Springfield, VA |
Encumbrances |  | $ 0 |
Original Land |  | 138 |
Original Building |  | 3,749 |
Costs Capitalized Subsequent to Acquisition |  | 1,655 |
Land and improvements |  | 406 |
Buildings and Improvements |  | 5,136 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 5,542 |
Accumulated Depreciation |  | $ 3,965 |
Year(s) Built / Renovated |  | 1985 |
Year(s) Acquired |  | 1997 |
Depreciable Lives (Years) | [3] | -1 |
8000 Corporate Court, Building Eleven |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 8000 Corporate Court, Building Eleven |
Type |  | Office |
Location |  | Springfield, VA |
Encumbrances |  | $ 0 |
Original Land |  | 136 |
Original Building |  | 3,071 |
Costs Capitalized Subsequent to Acquisition |  | 1,596 |
Land and improvements |  | 774 |
Buildings and Improvements |  | 4,029 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 4,803 |
Accumulated Depreciation |  | $ 2,909 |
Year(s) Built / Renovated |  | 1989 |
Year(s) Acquired |  | 1997 |
Depreciable Lives (Years) | [3] | -1 |
7375 Boston Boulevard, Building Ten |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 7375 Boston Boulevard, Building Ten |
Type |  | Office |
Location |  | Springfield, VA |
Encumbrances |  | $ 0 |
Original Land |  | 23 |
Original Building |  | 2,685 |
Costs Capitalized Subsequent to Acquisition |  | 938 |
Land and improvements |  | 93 |
Buildings and Improvements |  | 3,553 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 3,646 |
Accumulated Depreciation |  | $ 2,570 |
Year(s) Built / Renovated |  | 1988 |
Year(s) Acquired |  | 1997 |
Depreciable Lives (Years) | [3] | -1 |
7374 Boston Boulevard, Building Four |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 7374 Boston Boulevard, Building Four |
Type |  | Office |
Location |  | Springfield, VA |
Encumbrances |  | $ 0 |
Original Land |  | 241 |
Original Building |  | 1,605 |
Costs Capitalized Subsequent to Acquisition |  | 1,913 |
Land and improvements |  | 398 |
Buildings and Improvements |  | 3,361 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 3,759 |
Accumulated Depreciation |  | $ 2,578 |
Year(s) Built / Renovated |  | 1984 |
Year(s) Acquired |  | 1997 |
Depreciable Lives (Years) | [3] | -1 |
7451 Boston Boulevard, Building Two |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 7451 Boston Boulevard, Building Two |
Type |  | Office |
Location |  | Springfield, VA |
Encumbrances |  | $ 0 |
Original Land |  | 249 |
Original Building |  | 1,542 |
Costs Capitalized Subsequent to Acquisition |  | 1,659 |
Land and improvements |  | 613 |
Buildings and Improvements |  | 2,837 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 3,450 |
Accumulated Depreciation |  | $ 2,429 |
Year(s) Built / Renovated |  | 1982 |
Year(s) Acquired |  | 1997 |
Depreciable Lives (Years) | [3] | -1 |
32 Hartwell Avenue |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 32 Hartwell Avenue |
Type |  | Office |
Location |  | Lexington, MA |
Encumbrances |  | $ 0 |
Original Land |  | 168 |
Original Building |  | 1,943 |
Costs Capitalized Subsequent to Acquisition |  | 1,012 |
Land and improvements |  | 314 |
Buildings and Improvements |  | 2,809 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 3,123 |
Accumulated Depreciation |  | $ 1,974 |
Year(s) Built / Renovated |  | 1968/1979/1987 |
Year(s) Acquired |  | 1997 |
Depreciable Lives (Years) | [3] | -1 |
164 Lexington Road |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 164 Lexington Road |
Type |  | Office |
Location |  | Billerica, MA |
Encumbrances |  | $ 0 |
Original Land |  | 592 |
Original Building |  | 1,370 |
Costs Capitalized Subsequent to Acquisition |  | 319 |
Land and improvements |  | 643 |
Buildings and Improvements |  | 1,638 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 2,281 |
Accumulated Depreciation |  | $ 868 |
Year(s) Built / Renovated |  | 1982 |
Year(s) Acquired |  | 1997 |
Depreciable Lives (Years) | [3] | -1 |
The Avant at Reston Town Center |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | The Avant at Reston Town Center |
Type |  | Residential |
Location |  | Reston, VA |
Encumbrances |  | $ 0 |
Original Land |  | 20,350 |
Original Building |  | 91,995 |
Costs Capitalized Subsequent to Acquisition |  | 830 |
Land and improvements |  | 20,350 |
Buildings and Improvements |  | 92,825 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 113,175 |
Accumulated Depreciation |  | $ 9,780 |
Year(s) Built / Renovated |  | 2014 |
Year(s) Acquired |  | 2010 |
Depreciable Lives (Years) | [3] | -1 |
The Lofts at Atlantic Wharf |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | The Lofts at Atlantic Wharf |
Type |  | Residential |
Location |  | Boston, MA |
Encumbrances |  | $ 0 |
Original Land |  | 3,529 |
Original Building |  | 54,891 |
Costs Capitalized Subsequent to Acquisition |  | 1,768 |
Land and improvements |  | 3,529 |
Buildings and Improvements |  | 56,659 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 60,188 |
Accumulated Depreciation |  | $ 9,622 |
Year(s) Built / Renovated |  | 2011 |
Year(s) Acquired |  | 2007 |
Depreciable Lives (Years) | [3] | -1 |
Boston Marriott Cambridge |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | Boston Marriott Cambridge |
Type |  | Hotel |
Location |  | Cambridge, MA |
Encumbrances |  | $ 0 |
Original Land |  | 478 |
Original Building |  | 37,918 |
Costs Capitalized Subsequent to Acquisition |  | 38,799 |
Land and improvements |  | 1,201 |
Buildings and Improvements |  | 75,994 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 77,195 |
Accumulated Depreciation |  | $ 47,753 |
Year(s) Built / Renovated |  | 1986 |
Year(s) Acquired |  | 1997 |
Depreciable Lives (Years) | [3] | -1 |
Kendall Center Green Garage |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | Kendall Center Green Garage |
Type |  | Garage |
Location |  | Cambridge, MA |
Encumbrances |  | $ 0 |
Original Land |  | 0 |
Original Building |  | 35,035 |
Costs Capitalized Subsequent to Acquisition |  | 7,448 |
Land and improvements |  | 103 |
Buildings and Improvements |  | 42,380 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 42,483 |
Accumulated Depreciation |  | $ 10,779 |
Year(s) Built / Renovated |  | 1984 |
Year(s) Acquired |  | 2006 |
Depreciable Lives (Years) | [3] | -1 |
Kendall Center Yellow Garage |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | Kendall Center Yellow Garage |
Type |  | Garage |
Location |  | Cambridge, MA |
Encumbrances |  | $ 0 |
Original Land |  | 1,256 |
Original Building |  | 15,697 |
Costs Capitalized Subsequent to Acquisition |  | 1,621 |
Land and improvements |  | 1,434 |
Buildings and Improvements |  | 17,140 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 18,574 |
Accumulated Depreciation |  | $ 5,181 |
Year(s) Built / Renovated |  | 2006 |
Year(s) Acquired |  | 2004 |
Depreciable Lives (Years) | [3] | -1 |
Kendall Center Blue Garage |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | Kendall Center Blue Garage |
Type |  | Garage |
Location |  | Cambridge, MA |
Encumbrances |  | $ 0 |
Original Land |  | 1,163 |
Original Building |  | 11,633 |
Costs Capitalized Subsequent to Acquisition |  | 2,283 |
Land and improvements |  | 1,579 |
Buildings and Improvements |  | 13,500 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 15,079 |
Accumulated Depreciation |  | $ 9,209 |
Year(s) Built / Renovated |  | 1990 |
Year(s) Acquired |  | 1997 |
Depreciable Lives (Years) | [3] | -1 |
Salesforce Tower |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | Salesforce Tower |
Type |  | Development |
Location |  | San Francisco, CA |
Encumbrances |  | $ 0 |
Original Land |  | 0 |
Original Building |  | 0 |
Costs Capitalized Subsequent to Acquisition |  | 947,106 |
Land and improvements |  | 200,349 |
Buildings and Improvements |  | 55,318 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 691,439 |
Total |  | 947,106 |
Accumulated Depreciation |  | $ 116 |
Year(s) Built / Renovated |  | N/A |
Year(s) Acquired |  | 2013 |
Depreciable Lives (Years) |  | N/A |
Signature at Reston |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | Signature at Reston |
Type |  | Development |
Location |  | Reston, VA |
Encumbrances |  | $ 0 |
Original Land |  | 0 |
Original Building |  | 0 |
Costs Capitalized Subsequent to Acquisition |  | 203,650 |
Land and improvements |  | 0 |
Buildings and Improvements |  | 0 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 203,650 |
Total |  | 203,650 |
Accumulated Depreciation |  | $ 0 |
Year(s) Built / Renovated |  | N/A |
Year(s) Acquired |  | 2013 |
Depreciable Lives (Years) |  | N/A |
Proto Kendall Square |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | Proto Kendall Square |
Type |  | Development |
Location |  | Cambridge, MA |
Encumbrances |  | $ 0 |
Original Land |  | 0 |
Original Building |  | 0 |
Costs Capitalized Subsequent to Acquisition |  | 82,905 |
Land and improvements |  | 0 |
Buildings and Improvements |  | 0 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 82,905 |
Total |  | 82,905 |
Accumulated Depreciation |  | $ 0 |
Year(s) Built / Renovated |  | N/A |
Year(s) Acquired |  | 2015 |
Depreciable Lives (Years) |  | N/A |
145 Broadway |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 145 Broadway |
Type |  | Development |
Location |  | Cambridge, MA |
Encumbrances |  | $ 0 |
Original Land |  | 121 |
Original Building |  | 0 |
Costs Capitalized Subsequent to Acquisition |  | 79,979 |
Land and improvements |  | 324 |
Buildings and Improvements |  | 0 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 79,776 |
Total |  | 80,100 |
Accumulated Depreciation |  | $ 0 |
Year(s) Built / Renovated |  | NA |
Year(s) Acquired |  | 1997 |
Depreciable Lives (Years) |  | N/A |
191 Spring Street |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 191 Spring Street |
Type |  | Development |
Location |  | Lexington, MA |
Encumbrances |  | $ 0 |
Original Land |  | 2,850 |
Original Building |  | 27,166 |
Costs Capitalized Subsequent to Acquisition |  | 35,174 |
Land and improvements |  | 3,151 |
Buildings and Improvements |  | 46,288 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 15,751 |
Total |  | 65,190 |
Accumulated Depreciation |  | $ 19,034 |
Year(s) Built / Renovated |  | 1971/1995 |
Year(s) Acquired |  | 1997 |
Depreciable Lives (Years) | [3] | (1) |
6595 Springfield Center Drive (TSA Headquarters) |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 6595 Springfield Center Drive (TSA Headquarters) |
Type |  | Development |
Location |  | Springfield, VA |
Encumbrances |  | $ 0 |
Original Land |  | 0 |
Original Building |  | 0 |
Costs Capitalized Subsequent to Acquisition |  | 41,918 |
Land and improvements |  | 0 |
Buildings and Improvements |  | 0 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 41,918 |
Total |  | 41,918 |
Accumulated Depreciation |  | $ 0 |
Year(s) Built / Renovated |  | N/A |
Year(s) Acquired |  | 2007 |
Depreciable Lives (Years) |  | N/A |
MacArthur Station Residences |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | MacArthur Station Residences |
Type |  | Development |
Location |  | Oakland, CA |
Encumbrances |  | $ 0 |
Original Land |  | 0 |
Original Building |  | 0 |
Costs Capitalized Subsequent to Acquisition |  | 37,644 |
Land and improvements |  | 0 |
Buildings and Improvements |  | 0 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 37,644 |
Total |  | 37,644 |
Accumulated Depreciation |  | $ 0 |
Year(s) Built / Renovated |  | N/A |
Year(s) Acquired |  | N/A |
Depreciable Lives (Years) |  | N/A |
20 CityPoint |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 20 CityPoint |
Type |  | Development |
Location |  | Waltham, MA |
Encumbrances |  | $ 0 |
Original Land |  | 0 |
Original Building |  | 0 |
Costs Capitalized Subsequent to Acquisition |  | 13,056 |
Land and improvements |  | 0 |
Buildings and Improvements |  | 0 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 13,056 |
Total |  | 13,056 |
Accumulated Depreciation |  | $ 0 |
Year(s) Built / Renovated |  | N/A |
Year(s) Acquired |  | 2007 |
Depreciable Lives (Years) |  | N/A |
Tower Oaks Master Plan |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | Tower Oaks Master Plan |
Type |  | Land |
Location |  | Rockville, MD |
Encumbrances |  | $ 0 |
Original Land |  | 0 |
Original Building |  | 0 |
Costs Capitalized Subsequent to Acquisition |  | 29,419 |
Land and improvements |  | 0 |
Buildings and Improvements |  | 0 |
Land Held for Development |  | 29,419 |
Development and Construction in Progress |  | 0 |
Total |  | 29,419 |
Accumulated Depreciation |  | $ 0 |
Year(s) Built / Renovated |  | N/A |
Year(s) Acquired |  | 1998 |
Depreciable Lives (Years) |  | N/A |
Plaza at Almaden |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | Plaza at Almaden |
Type |  | Land |
Location |  | San Jose, CA |
Encumbrances |  | $ 0 |
Original Land |  | 0 |
Original Building |  | 0 |
Costs Capitalized Subsequent to Acquisition |  | 29,085 |
Land and improvements |  | 0 |
Buildings and Improvements |  | 0 |
Land Held for Development |  | 29,085 |
Development and Construction in Progress |  | 0 |
Total |  | 29,085 |
Accumulated Depreciation |  | $ 0 |
Year(s) Built / Renovated |  | N/A |
Year(s) Acquired |  | 2006 |
Depreciable Lives (Years) |  | N/A |
Springfield Metro Center |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | Springfield Metro Center |
Type |  | Land |
Location |  | Springfield, VA |
Encumbrances |  | $ 0 |
Original Land |  | 0 |
Original Building |  | 0 |
Costs Capitalized Subsequent to Acquisition |  | 19,684 |
Land and improvements |  | 0 |
Buildings and Improvements |  | 0 |
Land Held for Development |  | 19,684 |
Development and Construction in Progress |  | 0 |
Total |  | 19,684 |
Accumulated Depreciation |  | $ 0 |
Year(s) Built / Renovated |  | N/A |
Year(s) Acquired |  | 2007 |
Depreciable Lives (Years) |  | N/A |
214 Third Avenue |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 214 Third Avenue |
Type |  | Land |
Location |  | Waltham, MA |
Encumbrances |  | $ 0 |
Original Land |  | 0 |
Original Building |  | 0 |
Costs Capitalized Subsequent to Acquisition |  | 13,815 |
Land and improvements |  | 0 |
Buildings and Improvements |  | 0 |
Land Held for Development |  | 13,815 |
Development and Construction in Progress |  | 0 |
Total |  | 13,815 |
Accumulated Depreciation |  | $ 0 |
Year(s) Built / Renovated |  | N/A |
Year(s) Acquired |  | 2006 |
Depreciable Lives (Years) |  | N/A |
Reston Gateway |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | Reston Gateway |
Type |  | Land |
Location |  | Reston, VA |
Encumbrances |  | $ 0 |
Original Land |  | 0 |
Original Building |  | 0 |
Costs Capitalized Subsequent to Acquisition |  | 13,730 |
Land and improvements |  | 0 |
Buildings and Improvements |  | 0 |
Land Held for Development |  | 13,730 |
Development and Construction in Progress |  | 0 |
Total |  | 13,730 |
Accumulated Depreciation |  | $ 0 |
Year(s) Built / Renovated |  | N/A |
Year(s) Acquired |  | 1998 |
Depreciable Lives (Years) |  | N/A |
103 Fourth Avenue |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 103 Fourth Avenue |
Type |  | Land |
Location |  | Waltham, MA |
Encumbrances |  | $ 0 |
Original Land |  | 0 |
Original Building |  | 0 |
Costs Capitalized Subsequent to Acquisition |  | 12,115 |
Land and improvements |  | 0 |
Buildings and Improvements |  | 0 |
Land Held for Development |  | 12,115 |
Development and Construction in Progress |  | 0 |
Total |  | 12,115 |
Accumulated Depreciation |  | $ 0 |
Year(s) Built / Renovated |  | N/A |
Year(s) Acquired |  | 2007 |
Depreciable Lives (Years) |  | N/A |
Crane Meadow |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | Crane Meadow |
Type |  | Land |
Location |  | Marlborough, MA |
Encumbrances |  | $ 0 |
Original Land |  | 0 |
Original Building |  | 0 |
Costs Capitalized Subsequent to Acquisition |  | 8,836 |
Land and improvements |  | 0 |
Buildings and Improvements |  | 0 |
Land Held for Development |  | 8,836 |
Development and Construction in Progress |  | 0 |
Total |  | 8,836 |
Accumulated Depreciation |  | $ 0 |
Year(s) Built / Renovated |  | N/A |
Year(s) Acquired |  | 2000 |
Depreciable Lives (Years) |  | N/A |
Washingtonian North |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | Washingtonian North |
Type |  | Land |
Location |  | Gaithersburg, MD |
Encumbrances |  | $ 0 |
Original Land |  | 0 |
Original Building |  | 0 |
Costs Capitalized Subsequent to Acquisition |  | 7,645 |
Land and improvements |  | 0 |
Buildings and Improvements |  | 0 |
Land Held for Development |  | 7,645 |
Development and Construction in Progress |  | 0 |
Total |  | 7,645 |
Accumulated Depreciation |  | $ 0 |
Year(s) Built / Renovated |  | N/A |
Year(s) Acquired |  | 1998 |
Depreciable Lives (Years) |  | N/A |
2100 Pennsylvania Avenue |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 2100 Pennsylvania Avenue |
Type |  | Land |
Location |  | Washington, DC |
Encumbrances |  | $ 0 |
Original Land |  | 0 |
Original Building |  | 0 |
Costs Capitalized Subsequent to Acquisition |  | 6,543 |
Land and improvements |  | 0 |
Buildings and Improvements |  | 0 |
Land Held for Development |  | 6,543 |
Development and Construction in Progress |  | 0 |
Total |  | 6,543 |
Accumulated Depreciation |  | $ 0 |
Year(s) Built / Renovated |  | N/A |
Year(s) Acquired |  | N/A |
Depreciable Lives (Years) |  | N/A |
Fourth and Harrison |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | Fourth and Harrison |
Type |  | Land |
Location |  | San Francisco, CA |
Encumbrances |  | $ 0 |
Original Land |  | 0 |
Original Building |  | 0 |
Costs Capitalized Subsequent to Acquisition |  | 5,659 |
Land and improvements |  | 0 |
Buildings and Improvements |  | 0 |
Land Held for Development |  | 5,659 |
Development and Construction in Progress |  | 0 |
Total |  | 5,659 |
Accumulated Depreciation |  | $ 0 |
Year(s) Built / Renovated |  | N/A |
Year(s) Acquired |  | N/A |
Depreciable Lives (Years) |  | N/A |
North First Master Plan |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | North First Master Plan |
Type |  | Land |
Location |  | San Jose, CA |
Encumbrances |  | $ 0 |
Original Land |  | 0 |
Original Building |  | 0 |
Costs Capitalized Subsequent to Acquisition |  | 3,018 |
Land and improvements |  | 0 |
Buildings and Improvements |  | 0 |
Land Held for Development |  | 3,018 |
Development and Construction in Progress |  | 0 |
Total |  | 3,018 |
Accumulated Depreciation |  | $ 0 |
Year(s) Built / Renovated |  | N/A |
Year(s) Acquired |  | 2007 |
Depreciable Lives (Years) |  | N/A |
Broad Run Business Park |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | Broad Run Business Park |
Type |  | Land |
Location |  | Loudoun County, VA |
Encumbrances |  | $ 0 |
Original Land |  | 0 |
Original Building |  | 0 |
Costs Capitalized Subsequent to Acquisition |  | 2,367 |
Land and improvements |  | 0 |
Buildings and Improvements |  | 0 |
Land Held for Development |  | 2,367 |
Development and Construction in Progress |  | 0 |
Total |  | 2,367 |
Accumulated Depreciation |  | $ 0 |
Year(s) Built / Renovated |  | N/A |
Year(s) Acquired |  | 1998 |
Depreciable Lives (Years) |  | N/A |
Kendall Center Master Plan |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | Kendall Center Master Plan |
Type |  | Land |
Location |  | Cambridge, MA |
Encumbrances |  | $ 0 |
Original Land |  | 0 |
Original Building |  | 0 |
Costs Capitalized Subsequent to Acquisition |  | 2,207 |
Land and improvements |  | 0 |
Buildings and Improvements |  | 0 |
Land Held for Development |  | 2,207 |
Development and Construction in Progress |  | 0 |
Total |  | 2,207 |
Accumulated Depreciation |  | $ 0 |
Year(s) Built / Renovated |  | N/A |
Year(s) Acquired |  | N/A |
Depreciable Lives (Years) |  | N/A |
Weston Quarry |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | Weston Quarry |
Type |  | Land |
Location |  | Weston, MA |
Encumbrances |  | $ 0 |
Original Land |  | 0 |
Original Building |  | 0 |
Costs Capitalized Subsequent to Acquisition |  | 1,194 |
Land and improvements |  | 0 |
Buildings and Improvements |  | 0 |
Land Held for Development |  | 1,194 |
Development and Construction in Progress |  | 0 |
Total |  | 1,194 |
Accumulated Depreciation |  | $ 0 |
Year(s) Built / Renovated |  | N/A |
Year(s) Acquired |  | 2001 |
Depreciable Lives (Years) |  | N/A |
Reston Overlook Master Plan |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | Reston Overlook Master Plan |
Type |  | Land |
Location |  | Reston, VA |
Encumbrances |  | $ 0 |
Original Land |  | 0 |
Original Building |  | 0 |
Costs Capitalized Subsequent to Acquisition |  | 39 |
Land and improvements |  | 0 |
Buildings and Improvements |  | 0 |
Land Held for Development |  | 39 |
Development and Construction in Progress |  | 0 |
Total |  | 39 |
Accumulated Depreciation |  | $ 0 |
Year(s) Built / Renovated |  | N/A |
Year(s) Acquired |  | 2000 |
Depreciable Lives (Years) |  | N/A |
Boston Properties Limited Partnership |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Encumbrances | [4] | $ 2,979,281 |
Original Land |  | 4,762,002 |
Original Building |  | 11,634,050 |
Costs Capitalized Subsequent to Acquisition |  | 4,251,184 |
Land and improvements |  | 4,976,303 |
Buildings and Improvements |  | 14,196,670 |
Land Held for Development | [5] | 204,925 |
Development and Construction in Progress |  | 1,269,338 |
Total |  | 20,647,236 |
Accumulated Depreciation |  | 4,473,895 |
Furniture, fixtures and equipment |  | 37,928 | $ 32,687
Furniture, fixtures and equipment accumulated depreciation |  | 23,064 |
Real Estate Aggregate Cost For Tax Purposes |  | 19,300,000 |
Real Estate Aggregate Accumulated Depreciation For Tax Purposes |  | $ 4,100,000 |
Real Estate and Accumulated Depreciation, Life Used for Depreciation |  | 40 years |
Unamortized deferred finance costs |  | $ (34,700) |
Boston Properties Limited Partnership | 767 Fifth Avenue (the General Motors Building) |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 767 Fifth Avenue (the General Motors Building) |
Type |  | Office |
Location |  | New York, NY |
Encumbrances |  | $ 2,267,041 |
Original Land |  | 1,796,252 |
Original Building |  | 1,532,654 |
Costs Capitalized Subsequent to Acquisition |  | 135,559 |
Land and improvements |  | 1,796,252 |
Buildings and Improvements |  | 1,668,213 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 3,464,465 |
Accumulated Depreciation |  | $ 222,981 |
Year(s) Built / Renovated |  | 1968 |
Year(s) Acquired |  | 2013 |
Depreciable Lives (Years) | [6] | -1 |
Boston Properties Limited Partnership | Prudential Center |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | Prudential Center |
Type |  | Office |
Location |  | Boston, MA |
Encumbrances |  | $ 0 |
Original Land |  | 92,077 |
Original Building |  | 948,357 |
Costs Capitalized Subsequent to Acquisition |  | 441,339 |
Land and improvements |  | 100,540 |
Buildings and Improvements |  | 1,381,233 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 1,481,773 |
Accumulated Depreciation |  | $ 497,960 |
Year(s) Built / Renovated |  | 1965/1993/2002/2016-2017 |
Year(s) Acquired |  | 1998/1999/2000 |
Depreciable Lives (Years) | [6] | -1 |
Boston Properties Limited Partnership | Embarcadero Center |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | Embarcadero Center |
Type |  | Office |
Location |  | San Francisco, CA |
Encumbrances |  | $ 0 |
Original Land |  | 179,697 |
Original Building |  | 847,410 |
Costs Capitalized Subsequent to Acquisition |  | 304,399 |
Land and improvements |  | 180,420 |
Buildings and Improvements |  | 1,151,086 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 1,331,506 |
Accumulated Depreciation |  | $ 581,932 |
Year(s) Built / Renovated |  | 1970/1989 |
Year(s) Acquired |  | 1998-1999 |
Depreciable Lives (Years) | [6] | -1 |
Boston Properties Limited Partnership | 399 Park Avenue |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 399 Park Avenue |
Type |  | Office |
Location |  | New York, NY |
Encumbrances |  | $ 0 |
Original Land |  | 339,200 |
Original Building |  | 700,358 |
Costs Capitalized Subsequent to Acquisition |  | 121,810 |
Land and improvements |  | 339,200 |
Buildings and Improvements |  | 822,168 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 1,161,368 |
Accumulated Depreciation |  | $ 296,763 |
Year(s) Built / Renovated |  | 1961 |
Year(s) Acquired |  | 2002 |
Depreciable Lives (Years) | [6] | -1 |
Boston Properties Limited Partnership | 200 Clarendon Street and Garage |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 200 Clarendon Street and Garage |
Type |  | Office |
Location |  | Boston, MA |
Encumbrances |  | $ 0 |
Original Land |  | 219,543 |
Original Building |  | 667,884 |
Costs Capitalized Subsequent to Acquisition |  | 139,189 |
Land and improvements |  | 219,616 |
Buildings and Improvements |  | 799,991 |
Land Held for Development |  | 7,009 |
Development and Construction in Progress |  | 0 |
Total |  | 1,026,616 |
Accumulated Depreciation |  | $ 161,471 |
Year(s) Built / Renovated |  | 1976 |
Year(s) Acquired |  | 2010 |
Depreciable Lives (Years) | [6] | -1 |
Boston Properties Limited Partnership | 601 Lexington Avenue |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 601 Lexington Avenue |
Type |  | Office |
Location |  | New York, NY |
Encumbrances |  | $ 672,142 |
Original Land |  | 241,600 |
Original Building |  | 494,782 |
Costs Capitalized Subsequent to Acquisition |  | 253,504 |
Land and improvements |  | 279,281 |
Buildings and Improvements |  | 607,406 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 103,199 |
Total |  | 989,886 |
Accumulated Depreciation |  | $ 246,814 |
Year(s) Built / Renovated |  | 1977/1997 |
Year(s) Acquired |  | 2001 |
Depreciable Lives (Years) | [6] | -1 |
Boston Properties Limited Partnership | 250 West 55th Street |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 250 West 55th Street |
Type |  | Office |
Location |  | New York, NY |
Encumbrances |  | $ 0 |
Original Land |  | 285,263 |
Original Building |  | 603,167 |
Costs Capitalized Subsequent to Acquisition |  | 43,296 |
Land and improvements |  | 285,263 |
Buildings and Improvements |  | 646,463 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 931,726 |
Accumulated Depreciation |  | $ 72,058 |
Year(s) Built / Renovated |  | 2014 |
Year(s) Acquired |  | 2007 |
Depreciable Lives (Years) | [6] | -1 |
Boston Properties Limited Partnership | 100 Federal Street |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 100 Federal Street |
Type |  | Office |
Location |  | Boston, MA |
Encumbrances |  | $ 0 |
Original Land |  | 131,067 |
Original Building |  | 435,954 |
Costs Capitalized Subsequent to Acquisition |  | 79,035 |
Land and improvements |  | 131,067 |
Buildings and Improvements |  | 514,989 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 646,056 |
Accumulated Depreciation |  | $ 97,630 |
Year(s) Built / Renovated |  | 1971-1975/2017 |
Year(s) Acquired |  | 2012 |
Depreciable Lives (Years) | [6] | -1 |
Boston Properties Limited Partnership | Carnegie Center |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | Carnegie Center |
Type |  | Office |
Location |  | Princeton, NJ |
Encumbrances |  | $ 0 |
Original Land |  | 107,997 |
Original Building |  | 389,359 |
Costs Capitalized Subsequent to Acquisition |  | 140,642 |
Land and improvements |  | 104,617 |
Buildings and Improvements |  | 530,527 |
Land Held for Development |  | 2,854 |
Development and Construction in Progress |  | 0 |
Total |  | 637,998 |
Accumulated Depreciation |  | $ 224,256 |
Year(s) Built / Renovated |  | 1983-2016 |
Year(s) Acquired |  | 1998/1999/2000/2007/2014/2017 |
Depreciable Lives (Years) | [6] | -1 |
Boston Properties Limited Partnership | Times Square Tower |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | Times Square Tower |
Type |  | Office |
Location |  | New York, NY |
Encumbrances |  | $ 0 |
Original Land |  | 165,413 |
Original Building |  | 380,438 |
Costs Capitalized Subsequent to Acquisition |  | 49,071 |
Land and improvements |  | 159,694 |
Buildings and Improvements |  | 435,228 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 594,922 |
Accumulated Depreciation |  | $ 182,850 |
Year(s) Built / Renovated |  | 2004 |
Year(s) Acquired |  | 2000 |
Depreciable Lives (Years) | [6] | -1 |
Boston Properties Limited Partnership | Atlantic Wharf |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | Atlantic Wharf |
Type |  | Office |
Location |  | Boston, MA |
Encumbrances |  | $ 0 |
Original Land |  | 63,988 |
Original Building |  | 454,537 |
Costs Capitalized Subsequent to Acquisition |  | 17,473 |
Land and improvements |  | 63,988 |
Buildings and Improvements |  | 472,010 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 535,998 |
Accumulated Depreciation |  | $ 101,525 |
Year(s) Built / Renovated |  | 2011 |
Year(s) Acquired |  | 2007 |
Depreciable Lives (Years) | [6] | -1 |
Boston Properties Limited Partnership | Fountain Square |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | Fountain Square |
Type |  | Office |
Location |  | Reston, VA |
Encumbrances |  | $ 0 |
Original Land |  | 56,853 |
Original Building |  | 306,298 |
Costs Capitalized Subsequent to Acquisition |  | 17,834 |
Land and improvements |  | 56,853 |
Buildings and Improvements |  | 320,474 |
Land Held for Development |  | 3,658 |
Development and Construction in Progress |  | 0 |
Total |  | 380,985 |
Accumulated Depreciation |  | $ 60,098 |
Year(s) Built / Renovated |  | 1986-1990 |
Year(s) Acquired |  | 2012 |
Depreciable Lives (Years) | [6] | -1 |
Boston Properties Limited Partnership | 510 Madison Avenue |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 510 Madison Avenue |
Type |  | Office |
Location |  | New York, NY |
Encumbrances |  | $ 0 |
Original Land |  | 103,000 |
Original Building |  | 253,665 |
Costs Capitalized Subsequent to Acquisition |  | 23,875 |
Land and improvements |  | 103,000 |
Buildings and Improvements |  | 277,540 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 380,540 |
Accumulated Depreciation |  | $ 54,056 |
Year(s) Built / Renovated |  | 2012 |
Year(s) Acquired |  | 2010 |
Depreciable Lives (Years) | [6] | -1 |
Boston Properties Limited Partnership | 599 Lexington Avenue |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 599 Lexington Avenue |
Type |  | Office |
Location |  | New York, NY |
Encumbrances |  | $ 0 |
Original Land |  | 81,040 |
Original Building |  | 100,507 |
Costs Capitalized Subsequent to Acquisition |  | 138,108 |
Land and improvements |  | 81,040 |
Buildings and Improvements |  | 238,615 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 319,655 |
Accumulated Depreciation |  | $ 159,586 |
Year(s) Built / Renovated |  | 1986 |
Year(s) Acquired |  | 1997 |
Depreciable Lives (Years) | [6] | -1 |
Boston Properties Limited Partnership | 680 Folsom Street |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 680 Folsom Street |
Type |  | Office |
Location |  | San Francisco, CA |
Encumbrances |  | $ 0 |
Original Land |  | 72,545 |
Original Building |  | 219,766 |
Costs Capitalized Subsequent to Acquisition |  | 7,545 |
Land and improvements |  | 72,545 |
Buildings and Improvements |  | 227,311 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 299,856 |
Accumulated Depreciation |  | $ 30,577 |
Year(s) Built / Renovated |  | 2014 |
Year(s) Acquired |  | 2012 |
Depreciable Lives (Years) | [6] | -1 |
Boston Properties Limited Partnership | South of Market and Democracy Tower |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | South of Market and Democracy Tower |
Type |  | Office |
Location |  | Reston, VA |
Encumbrances |  | $ 0 |
Original Land |  | 13,603 |
Original Building |  | 237,479 |
Costs Capitalized Subsequent to Acquisition |  | 14,655 |
Land and improvements |  | 13,603 |
Buildings and Improvements |  | 252,134 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 265,737 |
Accumulated Depreciation |  | $ 87,651 |
Year(s) Built / Renovated |  | 2008-2009 |
Year(s) Acquired |  | 2003 |
Depreciable Lives (Years) | [6] | -1 |
Boston Properties Limited Partnership | 601 Massachusetts Avenue |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 601 Massachusetts Avenue |
Type |  | Office |
Location |  | Washington, DC |
Encumbrances |  | $ 0 |
Original Land |  | 95,310 |
Original Building |  | 165,173 |
Costs Capitalized Subsequent to Acquisition |  | 2,341 |
Land and improvements |  | 95,310 |
Buildings and Improvements |  | 167,514 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 262,824 |
Accumulated Depreciation |  | $ 12,177 |
Year(s) Built / Renovated |  | 2016 |
Year(s) Acquired |  | 2008 |
Depreciable Lives (Years) |  | -1 |
Boston Properties Limited Partnership | Bay Colony Corporate Center |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | Bay Colony Corporate Center |
Type |  | Office |
Location |  | Waltham, MA |
Encumbrances |  | $ 0 |
Original Land |  | 18,789 |
Original Building |  | 148,451 |
Costs Capitalized Subsequent to Acquisition |  | 73,418 |
Land and improvements |  | 18,789 |
Buildings and Improvements |  | 221,869 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 240,658 |
Accumulated Depreciation |  | $ 57,320 |
Year(s) Built / Renovated |  | 1985-1989 |
Year(s) Acquired |  | 2011 |
Depreciable Lives (Years) | [6] | -1 |
Boston Properties Limited Partnership | Gateway Center |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | Gateway Center |
Type |  | Office |
Location |  | San Francisco, CA |
Encumbrances |  | $ 0 |
Original Land |  | 28,255 |
Original Building |  | 139,245 |
Costs Capitalized Subsequent to Acquisition |  | 52,630 |
Land and improvements |  | 29,029 |
Buildings and Improvements |  | 191,101 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 220,130 |
Accumulated Depreciation |  | $ 101,191 |
Year(s) Built / Renovated |  | 1984/1986/2002 |
Year(s) Acquired |  | 1999 |
Depreciable Lives (Years) | [6] | -1 |
Boston Properties Limited Partnership | 535 Mission Street |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 535 Mission Street |
Type |  | Office |
Location |  | San Francisco, CA |
Encumbrances |  | $ 0 |
Original Land |  | 40,933 |
Original Building |  | 148,378 |
Costs Capitalized Subsequent to Acquisition |  | 3,259 |
Land and improvements |  | 40,933 |
Buildings and Improvements |  | 151,637 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 192,570 |
Accumulated Depreciation |  | $ 14,637 |
Year(s) Built / Renovated |  | 2015 |
Year(s) Acquired |  | 2013 |
Depreciable Lives (Years) | [6] | -1 |
Boston Properties Limited Partnership | 2200 Pennsylvania Avenue |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 2200 Pennsylvania Avenue |
Type |  | Office |
Location |  | Washington, DC |
Encumbrances |  | $ 0 |
Original Land |  | 0 |
Original Building |  | 183,541 |
Costs Capitalized Subsequent to Acquisition |  | 4,907 |
Land and improvements |  | 0 |
Buildings and Improvements |  | 188,448 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 188,448 |
Accumulated Depreciation |  | $ 46,780 |
Year(s) Built / Renovated |  | 2011 |
Year(s) Acquired |  | 2008 |
Depreciable Lives (Years) | [6] | -1 |
Boston Properties Limited Partnership | Mountain View Research Park |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | Mountain View Research Park |
Type |  | Office |
Location |  | Mountain View, CA |
Encumbrances |  | $ 0 |
Original Land |  | 95,066 |
Original Building |  | 68,373 |
Costs Capitalized Subsequent to Acquisition |  | 8,136 |
Land and improvements |  | 95,066 |
Buildings and Improvements |  | 76,509 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 171,575 |
Accumulated Depreciation |  | $ 15,146 |
Year(s) Built / Renovated |  | 1977-1981/2007-2013 |
Year(s) Acquired |  | 2013 |
Depreciable Lives (Years) | [6] | -1 |
Boston Properties Limited Partnership | Reservoir Place |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | Reservoir Place |
Type |  | Office |
Location |  | Waltham, MA |
Encumbrances |  | $ 0 |
Original Land |  | 18,605 |
Original Building |  | 104,124 |
Costs Capitalized Subsequent to Acquisition |  | 39,180 |
Land and improvements |  | 19,089 |
Buildings and Improvements |  | 142,820 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 161,909 |
Accumulated Depreciation |  | $ 65,309 |
Year(s) Built / Renovated |  | 1955/1987/2017 |
Year(s) Acquired |  | 1997/1998 |
Depreciable Lives (Years) | [6] | -1 |
Boston Properties Limited Partnership | 1330 Connecticut Avenue |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 1330 Connecticut Avenue |
Type |  | Office |
Location |  | Washington, DC |
Encumbrances |  | $ 0 |
Original Land |  | 25,982 |
Original Building |  | 82,311 |
Costs Capitalized Subsequent to Acquisition |  | 28,226 |
Land and improvements |  | 25,982 |
Buildings and Improvements |  | 110,537 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 136,519 |
Accumulated Depreciation |  | $ 21,484 |
Year(s) Built / Renovated |  | 1984 |
Year(s) Acquired |  | 2004 |
Depreciable Lives (Years) | [6] | -1 |
Boston Properties Limited Partnership | Kingstowne Towne Center |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | Kingstowne Towne Center |
Type |  | Office |
Location |  | Alexandria, VA |
Encumbrances |  | $ 0 |
Original Land |  | 18,021 |
Original Building |  | 109,038 |
Costs Capitalized Subsequent to Acquisition |  | 1,207 |
Land and improvements |  | 18,021 |
Buildings and Improvements |  | 110,245 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 128,266 |
Accumulated Depreciation |  | $ 39,018 |
Year(s) Built / Renovated |  | 2003-2006 |
Year(s) Acquired |  | 2007 |
Depreciable Lives (Years) | [6] | -1 |
Boston Properties Limited Partnership | 1333 New Hampshire Avenue |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 1333 New Hampshire Avenue |
Type |  | Office |
Location |  | Washington, DC |
Encumbrances |  | $ 0 |
Original Land |  | 34,032 |
Original Building |  | 85,660 |
Costs Capitalized Subsequent to Acquisition |  | 6,079 |
Land and improvements |  | 34,032 |
Buildings and Improvements |  | 91,739 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 125,771 |
Accumulated Depreciation |  | $ 39,279 |
Year(s) Built / Renovated |  | 1996 |
Year(s) Acquired |  | 2003 |
Depreciable Lives (Years) | [6] | -1 |
Boston Properties Limited Partnership | One Freedom Square |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | One Freedom Square |
Type |  | Office |
Location |  | Reston, VA |
Encumbrances |  | $ 0 |
Original Land |  | 9,929 |
Original Building |  | 84,504 |
Costs Capitalized Subsequent to Acquisition |  | 26,981 |
Land and improvements |  | 9,883 |
Buildings and Improvements |  | 111,531 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 121,414 |
Accumulated Depreciation |  | $ 49,037 |
Year(s) Built / Renovated |  | 2000 |
Year(s) Acquired |  | 2003 |
Depreciable Lives (Years) | [6] | -1 |
Boston Properties Limited Partnership | Weston Corporate Center |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | Weston Corporate Center |
Type |  | Office |
Location |  | Weston, MA |
Encumbrances |  | $ 0 |
Original Land |  | 25,753 |
Original Building |  | 92,312 |
Costs Capitalized Subsequent to Acquisition |  | (123) |
Land and improvements |  | 25,854 |
Buildings and Improvements |  | 92,088 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 117,942 |
Accumulated Depreciation |  | $ 23,125 |
Year(s) Built / Renovated |  | 2010 |
Year(s) Acquired |  | 2001 |
Depreciable Lives (Years) | [6] | -1 |
Boston Properties Limited Partnership | Capital Gallery |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | Capital Gallery |
Type |  | Office |
Location |  | Washington, DC |
Encumbrances |  | $ 0 |
Original Land |  | 4,725 |
Original Building |  | 29,565 |
Costs Capitalized Subsequent to Acquisition |  | 79,383 |
Land and improvements |  | 6,128 |
Buildings and Improvements |  | 107,545 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 113,673 |
Accumulated Depreciation |  | $ 63,717 |
Year(s) Built / Renovated |  | 1981/2006 |
Year(s) Acquired |  | 2007 |
Depreciable Lives (Years) | [6] | -1 |
Boston Properties Limited Partnership | Two Freedom Square |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | Two Freedom Square |
Type |  | Office |
Location |  | Reston, VA |
Encumbrances |  | $ 0 |
Original Land |  | 13,930 |
Original Building |  | 77,739 |
Costs Capitalized Subsequent to Acquisition |  | 17,167 |
Land and improvements |  | 13,866 |
Buildings and Improvements |  | 94,970 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 108,836 |
Accumulated Depreciation |  | $ 46,532 |
Year(s) Built / Renovated |  | 2001 |
Year(s) Acquired |  | 2003 |
Depreciable Lives (Years) | [6] | -1 |
Boston Properties Limited Partnership | One and Two Reston Overlook |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | One and Two Reston Overlook |
Type |  | Office |
Location |  | Reston, VA |
Encumbrances |  | $ 0 |
Original Land |  | 16,456 |
Original Building |  | 66,192 |
Costs Capitalized Subsequent to Acquisition |  | 20,693 |
Land and improvements |  | 15,074 |
Buildings and Improvements |  | 88,267 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 103,341 |
Accumulated Depreciation |  | $ 43,627 |
Year(s) Built / Renovated |  | 1999 |
Year(s) Acquired |  | 2000 |
Depreciable Lives (Years) | [6] | -1 |
Boston Properties Limited Partnership | Discovery Square |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | Discovery Square |
Type |  | Office |
Location |  | Reston, VA |
Encumbrances |  | $ 0 |
Original Land |  | 11,198 |
Original Building |  | 71,782 |
Costs Capitalized Subsequent to Acquisition |  | 18,869 |
Land and improvements |  | 11,146 |
Buildings and Improvements |  | 90,703 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 101,849 |
Accumulated Depreciation |  | $ 41,928 |
Year(s) Built / Renovated |  | 2001 |
Year(s) Acquired |  | 2003 |
Depreciable Lives (Years) | [6] | -1 |
Boston Properties Limited Partnership | 355 Main Street |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 355 Main Street |
Type |  | Office |
Location |  | Cambridge, MA |
Encumbrances |  | $ 0 |
Original Land |  | 18,863 |
Original Building |  | 53,346 |
Costs Capitalized Subsequent to Acquisition |  | 27,152 |
Land and improvements |  | 21,098 |
Buildings and Improvements |  | 78,263 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 99,361 |
Accumulated Depreciation |  | $ 26,850 |
Year(s) Built / Renovated |  | 1981/1996/2013 |
Year(s) Acquired |  | 2006 |
Depreciable Lives (Years) | [6] | -1 |
Boston Properties Limited Partnership | 140 Kendrick Street |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 140 Kendrick Street |
Type |  | Office |
Location |  | Needham, MA |
Encumbrances |  | $ 0 |
Original Land |  | 18,095 |
Original Building |  | 66,905 |
Costs Capitalized Subsequent to Acquisition |  | 13,502 |
Land and improvements |  | 18,095 |
Buildings and Improvements |  | 80,407 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 98,502 |
Accumulated Depreciation |  | $ 28,111 |
Year(s) Built / Renovated |  | 2000 |
Year(s) Acquired |  | 2004 |
Depreciable Lives (Years) | [6] | -1 |
Boston Properties Limited Partnership | 10 CityPoint |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 10 CityPoint |
Type |  | Office |
Location |  | Waltham, MA |
Encumbrances |  | $ 0 |
Original Land |  | 1,953 |
Original Building |  | 85,752 |
Costs Capitalized Subsequent to Acquisition |  | 2,670 |
Land and improvements |  | 1,953 |
Buildings and Improvements |  | 88,422 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 90,375 |
Accumulated Depreciation |  | $ 4,673 |
Year(s) Built / Renovated |  | 2016 |
Year(s) Acquired |  | 1997 |
Depreciable Lives (Years) | [6] | -1 |
Boston Properties Limited Partnership | 90 Broadway |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 90 Broadway |
Type |  | Office |
Location |  | Cambridge, MA |
Encumbrances |  | $ 0 |
Original Land |  | 19,104 |
Original Building |  | 52,078 |
Costs Capitalized Subsequent to Acquisition |  | 17,001 |
Land and improvements |  | 20,741 |
Buildings and Improvements |  | 67,442 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 88,183 |
Accumulated Depreciation |  | $ 19,220 |
Year(s) Built / Renovated |  | 1983/1998/2013 |
Year(s) Acquired |  | 2006 |
Depreciable Lives (Years) | [6] | -1 |
Boston Properties Limited Partnership | 230 CityPoint |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 230 CityPoint |
Type |  | Office |
Location |  | Waltham, MA |
Encumbrances |  | $ 0 |
Original Land |  | 13,189 |
Original Building |  | 49,823 |
Costs Capitalized Subsequent to Acquisition |  | 23,619 |
Land and improvements |  | 13,189 |
Buildings and Improvements |  | 73,442 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 86,631 |
Accumulated Depreciation |  | $ 26,200 |
Year(s) Built / Renovated |  | 1992 |
Year(s) Acquired |  | 2005 |
Depreciable Lives (Years) | [6] | -1 |
Boston Properties Limited Partnership | 77 CityPoint |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 77 CityPoint |
Type |  | Office |
Location |  | Waltham, MA |
Encumbrances |  | $ 0 |
Original Land |  | 13,847 |
Original Building |  | 60,383 |
Costs Capitalized Subsequent to Acquisition |  | 5,598 |
Land and improvements |  | 13,847 |
Buildings and Improvements |  | 65,981 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 79,828 |
Accumulated Depreciation |  | $ 23,024 |
Year(s) Built / Renovated |  | 2008 |
Year(s) Acquired |  | 2001 |
Depreciable Lives (Years) | [6] | -1 |
Boston Properties Limited Partnership | Waltham Weston Corporate Center |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | Waltham Weston Corporate Center |
Type |  | Office |
Location |  | Waltham, MA |
Encumbrances |  | $ 0 |
Original Land |  | 10,385 |
Original Building |  | 60,694 |
Costs Capitalized Subsequent to Acquisition |  | 8,043 |
Land and improvements |  | 10,350 |
Buildings and Improvements |  | 68,772 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 79,122 |
Accumulated Depreciation |  | $ 29,359 |
Year(s) Built / Renovated |  | 2003 |
Year(s) Acquired |  | 1999 |
Depreciable Lives (Years) | [6] | -1 |
Boston Properties Limited Partnership | 3625-3635 Peterson Way |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 3625-3635 Peterson Way |
Type |  | Office |
Location |  | Santa Clara, CA |
Encumbrances |  | $ 0 |
Original Land |  | 63,206 |
Original Building |  | 14,879 |
Costs Capitalized Subsequent to Acquisition |  | 138 |
Land and improvements |  | 63,206 |
Buildings and Improvements |  | 14,879 |
Land Held for Development |  | 138 |
Development and Construction in Progress |  | 0 |
Total |  | 78,223 |
Accumulated Depreciation |  | $ 5,120 |
Year(s) Built / Renovated |  | 1979 |
Year(s) Acquired |  | 2016 |
Depreciable Lives (Years) | [6] | -1 |
Boston Properties Limited Partnership | North First Business Park |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | North First Business Park |
Type |  | Office |
Location |  | San Jose, CA |
Encumbrances |  | $ 0 |
Original Land |  | 58,402 |
Original Building |  | 13,069 |
Costs Capitalized Subsequent to Acquisition |  | 4,393 |
Land and improvements |  | 23,371 |
Buildings and Improvements |  | 16,583 |
Land Held for Development |  | 35,910 |
Development and Construction in Progress |  | 0 |
Total |  | 75,864 |
Accumulated Depreciation |  | $ 15,839 |
Year(s) Built / Renovated |  | 1981 |
Year(s) Acquired |  | 2007 |
Depreciable Lives (Years) | [6] | -1 |
Boston Properties Limited Partnership | 300 Binney Street |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 300 Binney Street |
Type |  | Office |
Location |  | Cambridge, MA |
Encumbrances |  | $ 0 |
Original Land |  | 18,080 |
Original Building |  | 51,262 |
Costs Capitalized Subsequent to Acquisition |  | 140 |
Land and improvements |  | 18,080 |
Buildings and Improvements |  | 51,402 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 69,482 |
Accumulated Depreciation |  | $ 7,755 |
Year(s) Built / Renovated |  | 2013 |
Year(s) Acquired |  | 2009 |
Depreciable Lives (Years) | [6] | -1 |
Boston Properties Limited Partnership | 2440 West El Camino Real |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 2440 West El Camino Real |
Type |  | Office |
Location |  | Mountain View, CA |
Encumbrances |  | $ 0 |
Original Land |  | 16,741 |
Original Building |  | 51,285 |
Costs Capitalized Subsequent to Acquisition |  | 1,287 |
Land and improvements |  | 16,741 |
Buildings and Improvements |  | 52,572 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 69,313 |
Accumulated Depreciation |  | $ 10,790 |
Year(s) Built / Renovated |  | 1987/2003 |
Year(s) Acquired |  | 2011 |
Depreciable Lives (Years) | [6] | -1 |
Boston Properties Limited Partnership | Wisconsin Place |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | Wisconsin Place |
Type |  | Office |
Location |  | Chevy Chase, MD |
Encumbrances |  | $ 0 |
Original Land |  | 0 |
Original Building |  | 53,349 |
Costs Capitalized Subsequent to Acquisition |  | 14,907 |
Land and improvements |  | 0 |
Buildings and Improvements |  | 68,256 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 68,256 |
Accumulated Depreciation |  | $ 19,775 |
Year(s) Built / Renovated |  | 2009 |
Year(s) Acquired |  | 2004 |
Depreciable Lives (Years) | [6] | -1 |
Boston Properties Limited Partnership | Reston Corporate Center |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | Reston Corporate Center |
Type |  | Office |
Location |  | Reston, VA |
Encumbrances |  | $ 0 |
Original Land |  | 9,135 |
Original Building |  | 50,857 |
Costs Capitalized Subsequent to Acquisition |  | 3,625 |
Land and improvements |  | 9,496 |
Buildings and Improvements |  | 54,121 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 63,617 |
Accumulated Depreciation |  | $ 26,178 |
Year(s) Built / Renovated |  | 1984 |
Year(s) Acquired |  | 1998 |
Depreciable Lives (Years) | [6] | -1 |
Boston Properties Limited Partnership | New Dominion Technology Park, Bldg. Two |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | New Dominion Technology Park, Bldg. Two |
Type |  | Office |
Location |  | Herndon, VA |
Encumbrances |  | $ 0 |
Original Land |  | 5,584 |
Original Building |  | 51,868 |
Costs Capitalized Subsequent to Acquisition |  | 412 |
Land and improvements |  | 5,574 |
Buildings and Improvements |  | 52,290 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 57,864 |
Accumulated Depreciation |  | $ 22,801 |
Year(s) Built / Renovated |  | 2004 |
Year(s) Acquired |  | 1998 |
Depreciable Lives (Years) | [6] | -1 |
Boston Properties Limited Partnership | 200 West Street |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 200 West Street |
Type |  | Office |
Location |  | Waltham, MA |
Encumbrances |  | $ 0 |
Original Land |  | 16,148 |
Original Building |  | 24,983 |
Costs Capitalized Subsequent to Acquisition |  | 8,012 |
Land and improvements |  | 16,148 |
Buildings and Improvements |  | 32,995 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 49,143 |
Accumulated Depreciation |  | $ 20,538 |
Year(s) Built / Renovated |  | 1999 |
Year(s) Acquired |  | 1997 |
Depreciable Lives (Years) | [6] | -1 |
Boston Properties Limited Partnership | New Dominion Technology Park, Bldg. One |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | New Dominion Technology Park, Bldg. One |
Type |  | Office |
Location |  | Herndon, VA |
Encumbrances |  | $ 32,691 |
Original Land |  | 3,880 |
Original Building |  | 43,227 |
Costs Capitalized Subsequent to Acquisition |  | 1,072 |
Land and improvements |  | 3,880 |
Buildings and Improvements |  | 44,299 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 48,179 |
Accumulated Depreciation |  | $ 25,304 |
Year(s) Built / Renovated |  | 2001 |
Year(s) Acquired |  | 1998 |
Depreciable Lives (Years) | [6] | -1 |
Boston Properties Limited Partnership | Sumner Square |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | Sumner Square |
Type |  | Office |
Location |  | Washington, DC |
Encumbrances |  | $ 0 |
Original Land |  | 624 |
Original Building |  | 28,745 |
Costs Capitalized Subsequent to Acquisition |  | 16,920 |
Land and improvements |  | 958 |
Buildings and Improvements |  | 45,331 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 46,289 |
Accumulated Depreciation |  | $ 23,103 |
Year(s) Built / Renovated |  | 1985 |
Year(s) Acquired |  | 1999 |
Depreciable Lives (Years) | [6] | -1 |
Boston Properties Limited Partnership | 255 Main Street |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 255 Main Street |
Type |  | Office |
Location |  | Cambridge, MA |
Encumbrances |  | $ 0 |
Original Land |  | 134 |
Original Building |  | 25,110 |
Costs Capitalized Subsequent to Acquisition |  | 19,927 |
Land and improvements |  | 134 |
Buildings and Improvements |  | 45,037 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 45,171 |
Accumulated Depreciation |  | $ 27,878 |
Year(s) Built / Renovated |  | 1987 |
Year(s) Acquired |  | 1997 |
Depreciable Lives (Years) | [6] | -1 |
Boston Properties Limited Partnership | University Place |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | University Place |
Type |  | Office |
Location |  | Cambridge, MA |
Encumbrances |  | $ 7,407 |
Original Land |  | 0 |
Original Building |  | 37,091 |
Costs Capitalized Subsequent to Acquisition |  | 7,557 |
Land and improvements |  | 27 |
Buildings and Improvements |  | 44,621 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 44,648 |
Accumulated Depreciation |  | $ 25,971 |
Year(s) Built / Renovated |  | 1985 |
Year(s) Acquired |  | 1998 |
Depreciable Lives (Years) | [6] | -1 |
Boston Properties Limited Partnership | 2600 Tower Oaks Boulevard |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 2600 Tower Oaks Boulevard |
Type |  | Office |
Location |  | Rockville, MD |
Encumbrances |  | $ 0 |
Original Land |  | 4,243 |
Original Building |  | 31,125 |
Costs Capitalized Subsequent to Acquisition |  | 7,704 |
Land and improvements |  | 4,244 |
Buildings and Improvements |  | 38,828 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 43,072 |
Accumulated Depreciation |  | $ 20,529 |
Year(s) Built / Renovated |  | 2001 |
Year(s) Acquired |  | 1998 |
Depreciable Lives (Years) | [6] | -1 |
Boston Properties Limited Partnership | Quorum Office Park |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | Quorum Office Park |
Type |  | Office |
Location |  | Chelmsford, MA |
Encumbrances |  | $ 0 |
Original Land |  | 3,750 |
Original Building |  | 32,454 |
Costs Capitalized Subsequent to Acquisition |  | 4,115 |
Land and improvements |  | 4,762 |
Buildings and Improvements |  | 35,557 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 40,319 |
Accumulated Depreciation |  | $ 16,211 |
Year(s) Built / Renovated |  | 2001 |
Year(s) Acquired |  | 2000 |
Depreciable Lives (Years) | [6] | -1 |
Boston Properties Limited Partnership | 500 E Street |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 500 E Street |
Type |  | Office |
Location |  | Washington, DC |
Encumbrances |  | $ 0 |
Original Land |  | 109 |
Original Building |  | 22,420 |
Costs Capitalized Subsequent to Acquisition |  | 11,503 |
Land and improvements |  | 1,569 |
Buildings and Improvements |  | 32,463 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 34,032 |
Accumulated Depreciation |  | $ 23,051 |
Year(s) Built / Renovated |  | 1987 |
Year(s) Acquired |  | 1997 |
Depreciable Lives (Years) | [6] | -1 |
Boston Properties Limited Partnership | 150 Broadway |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 150 Broadway |
Type |  | Office |
Location |  | Cambridge, MA |
Encumbrances |  | $ 0 |
Original Land |  | 850 |
Original Building |  | 25,042 |
Costs Capitalized Subsequent to Acquisition |  | 6,535 |
Land and improvements |  | 822 |
Buildings and Improvements |  | 31,605 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 32,427 |
Accumulated Depreciation |  | $ 16,477 |
Year(s) Built / Renovated |  | 1999 |
Year(s) Acquired |  | 1997 |
Depreciable Lives (Years) | [6] | -1 |
Boston Properties Limited Partnership | 325 Main Street |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 325 Main Street |
Type |  | Office |
Location |  | Cambridge, MA |
Encumbrances |  | $ 0 |
Original Land |  | 174 |
Original Building |  | 12,200 |
Costs Capitalized Subsequent to Acquisition |  | 11,192 |
Land and improvements |  | 772 |
Buildings and Improvements |  | 22,794 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 23,566 |
Accumulated Depreciation |  | $ 12,675 |
Year(s) Built / Renovated |  | 1987/2013 |
Year(s) Acquired |  | 1997 |
Depreciable Lives (Years) | [6] | -1 |
Boston Properties Limited Partnership | 105 Broadway |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 105 Broadway |
Type |  | Office |
Location |  | Cambridge, MA |
Encumbrances |  | $ 0 |
Original Land |  | 1,299 |
Original Building |  | 12,943 |
Costs Capitalized Subsequent to Acquisition |  | 6,108 |
Land and improvements |  | 1,868 |
Buildings and Improvements |  | 18,482 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 20,350 |
Accumulated Depreciation |  | $ 13,015 |
Year(s) Built / Renovated |  | 1990 |
Year(s) Acquired |  | 1997 |
Depreciable Lives (Years) | [6] | -1 |
Boston Properties Limited Partnership | Lexington Office Park |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | Lexington Office Park |
Type |  | Office |
Location |  | Lexington, MA |
Encumbrances |  | $ 0 |
Original Land |  | 998 |
Original Building |  | 1,426 |
Costs Capitalized Subsequent to Acquisition |  | 17,455 |
Land and improvements |  | 1,073 |
Buildings and Improvements |  | 18,806 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 19,879 |
Accumulated Depreciation |  | $ 13,235 |
Year(s) Built / Renovated |  | 1982 |
Year(s) Acquired |  | 1997 |
Depreciable Lives (Years) | [6] | -1 |
Boston Properties Limited Partnership | 201 Spring Street |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 201 Spring Street |
Type |  | Office |
Location |  | Lexington, MA |
Encumbrances |  | $ 0 |
Original Land |  | 2,849 |
Original Building |  | 15,303 |
Costs Capitalized Subsequent to Acquisition |  | (405) |
Land and improvements |  | 2,849 |
Buildings and Improvements |  | 14,898 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 17,747 |
Accumulated Depreciation |  | $ 7,681 |
Year(s) Built / Renovated |  | 1997 |
Year(s) Acquired |  | 1997 |
Depreciable Lives (Years) | [6] | -1 |
Boston Properties Limited Partnership | The Point |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | The Point |
Type |  | Office |
Location |  | Waltham, MA |
Encumbrances |  | $ 0 |
Original Land |  | 6,395 |
Original Building |  | 10,040 |
Costs Capitalized Subsequent to Acquisition |  | 409 |
Land and improvements |  | 6,480 |
Buildings and Improvements |  | 10,364 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 16,844 |
Accumulated Depreciation |  | $ 714 |
Year(s) Built / Renovated |  | 2015 |
Year(s) Acquired |  | 2007 |
Depreciable Lives (Years) | [6] | -1 |
Boston Properties Limited Partnership | 690 Folsom Street |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 690 Folsom Street |
Type |  | Office |
Location |  | San Francisco, CA |
Encumbrances |  | $ 0 |
Original Land |  | 3,219 |
Original Building |  | 11,038 |
Costs Capitalized Subsequent to Acquisition |  | 1,157 |
Land and improvements |  | 3,219 |
Buildings and Improvements |  | 12,195 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 15,414 |
Accumulated Depreciation |  | $ 1,295 |
Year(s) Built / Renovated |  | 2015 |
Year(s) Acquired |  | 2012 |
Depreciable Lives (Years) | [6] | -1 |
Boston Properties Limited Partnership | 91 Hartwell Avenue |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 91 Hartwell Avenue |
Type |  | Office |
Location |  | Lexington, MA |
Encumbrances |  | $ 0 |
Original Land |  | 784 |
Original Building |  | 6,464 |
Costs Capitalized Subsequent to Acquisition |  | 7,642 |
Land and improvements |  | 784 |
Buildings and Improvements |  | 14,106 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 14,890 |
Accumulated Depreciation |  | $ 9,705 |
Year(s) Built / Renovated |  | 1985 |
Year(s) Acquired |  | 1997 |
Depreciable Lives (Years) | [6] | -1 |
Boston Properties Limited Partnership | 92-100 Hayden Avenue |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 92-100 Hayden Avenue |
Type |  | Office |
Location |  | Lexington, MA |
Encumbrances |  | $ 0 |
Original Land |  | 594 |
Original Building |  | 6,748 |
Costs Capitalized Subsequent to Acquisition |  | 7,452 |
Land and improvements |  | 619 |
Buildings and Improvements |  | 14,175 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 14,794 |
Accumulated Depreciation |  | $ 12,329 |
Year(s) Built / Renovated |  | 1985 |
Year(s) Acquired |  | 1997 |
Depreciable Lives (Years) | [6] | -1 |
Boston Properties Limited Partnership | 181 Spring Street |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 181 Spring Street |
Type |  | Office |
Location |  | Lexington, MA |
Encumbrances |  | $ 0 |
Original Land |  | 1,066 |
Original Building |  | 9,520 |
Costs Capitalized Subsequent to Acquisition |  | 1,941 |
Land and improvements |  | 1,066 |
Buildings and Improvements |  | 11,461 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 12,527 |
Accumulated Depreciation |  | $ 5,109 |
Year(s) Built / Renovated |  | 1999 |
Year(s) Acquired |  | 1997 |
Depreciable Lives (Years) | [6] | -1 |
Boston Properties Limited Partnership | 195 West Street |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 195 West Street |
Type |  | Office |
Location |  | Waltham, MA |
Encumbrances |  | $ 0 |
Original Land |  | 1,611 |
Original Building |  | 6,652 |
Costs Capitalized Subsequent to Acquisition |  | 3,351 |
Land and improvements |  | 1,611 |
Buildings and Improvements |  | 10,003 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 11,614 |
Accumulated Depreciation |  | $ 7,736 |
Year(s) Built / Renovated |  | 1990 |
Year(s) Acquired |  | 1997 |
Depreciable Lives (Years) | [6] | -1 |
Boston Properties Limited Partnership | 33 Hayden Avenue |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 33 Hayden Avenue |
Type |  | Office |
Location |  | Lexington, MA |
Encumbrances |  | $ 0 |
Original Land |  | 266 |
Original Building |  | 3,234 |
Costs Capitalized Subsequent to Acquisition |  | 7,744 |
Land and improvements |  | 266 |
Buildings and Improvements |  | 10,978 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 11,244 |
Accumulated Depreciation |  | $ 8,067 |
Year(s) Built / Renovated |  | 1979 |
Year(s) Acquired |  | 1997 |
Depreciable Lives (Years) | [6] | -1 |
Boston Properties Limited Partnership | 7501 Boston Boulevard, Building Seven |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 7501 Boston Boulevard, Building Seven |
Type |  | Office |
Location |  | Springfield, VA |
Encumbrances |  | $ 0 |
Original Land |  | 665 |
Original Building |  | 9,273 |
Costs Capitalized Subsequent to Acquisition |  | 314 |
Land and improvements |  | 665 |
Buildings and Improvements |  | 9,587 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 10,252 |
Accumulated Depreciation |  | $ 4,732 |
Year(s) Built / Renovated |  | 1997 |
Year(s) Acquired |  | 1997 |
Depreciable Lives (Years) | [6] | -1 |
Boston Properties Limited Partnership | 250 Binney Street |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 250 Binney Street |
Type |  | Office |
Location |  | Cambridge, MA |
Encumbrances |  | $ 0 |
Original Land |  | 110 |
Original Building |  | 4,483 |
Costs Capitalized Subsequent to Acquisition |  | 2,939 |
Land and improvements |  | 110 |
Buildings and Improvements |  | 7,422 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 7,532 |
Accumulated Depreciation |  | $ 4,922 |
Year(s) Built / Renovated |  | 1983 |
Year(s) Acquired |  | 1997 |
Depreciable Lives (Years) | [6] | -1 |
Boston Properties Limited Partnership | 7435 Boston Boulevard, Building One |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 7435 Boston Boulevard, Building One |
Type |  | Office |
Location |  | Springfield, VA |
Encumbrances |  | $ 0 |
Original Land |  | 392 |
Original Building |  | 3,822 |
Costs Capitalized Subsequent to Acquisition |  | 3,304 |
Land and improvements |  | 486 |
Buildings and Improvements |  | 7,032 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 7,518 |
Accumulated Depreciation |  | $ 5,354 |
Year(s) Built / Renovated |  | 1982 |
Year(s) Acquired |  | 1997 |
Depreciable Lives (Years) | [6] | -1 |
Boston Properties Limited Partnership | 8000 Grainger Court, Building Five |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 8000 Grainger Court, Building Five |
Type |  | Office |
Location |  | Springfield, VA |
Encumbrances |  | $ 0 |
Original Land |  | 366 |
Original Building |  | 4,282 |
Costs Capitalized Subsequent to Acquisition |  | 2,781 |
Land and improvements |  | 453 |
Buildings and Improvements |  | 6,976 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 7,429 |
Accumulated Depreciation |  | $ 5,511 |
Year(s) Built / Renovated |  | 1984 |
Year(s) Acquired |  | 1997 |
Depreciable Lives (Years) | [6] | -1 |
Boston Properties Limited Partnership | 7450 Boston Boulevard, Building Three |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 7450 Boston Boulevard, Building Three |
Type |  | Office |
Location |  | Springfield, VA |
Encumbrances |  | $ 0 |
Original Land |  | 1,165 |
Original Building |  | 4,681 |
Costs Capitalized Subsequent to Acquisition |  | 1,359 |
Land and improvements |  | 1,327 |
Buildings and Improvements |  | 5,878 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 7,205 |
Accumulated Depreciation |  | $ 3,354 |
Year(s) Built / Renovated |  | 1987 |
Year(s) Acquired |  | 1998 |
Depreciable Lives (Years) | [6] | -1 |
Boston Properties Limited Partnership | 453 Ravendale Drive |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 453 Ravendale Drive |
Type |  | Office |
Location |  | Mountain View, CA |
Encumbrances |  | $ 0 |
Original Land |  | 5,477 |
Original Building |  | 1,090 |
Costs Capitalized Subsequent to Acquisition |  | 408 |
Land and improvements |  | 5,477 |
Buildings and Improvements |  | 1,498 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 6,975 |
Accumulated Depreciation |  | $ 472 |
Year(s) Built / Renovated |  | 1977 |
Year(s) Acquired |  | 2012 |
Depreciable Lives (Years) | [6] | -1 |
Boston Properties Limited Partnership | 17 Hartwell Avenue |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 17 Hartwell Avenue |
Type |  | Office |
Location |  | Lexington, MA |
Encumbrances |  | $ 0 |
Original Land |  | 26 |
Original Building |  | 150 |
Costs Capitalized Subsequent to Acquisition |  | 6,095 |
Land and improvements |  | 26 |
Buildings and Improvements |  | 6,245 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 6,271 |
Accumulated Depreciation |  | $ 1,062 |
Year(s) Built / Renovated |  | 1968 |
Year(s) Acquired |  | 1997 |
Depreciable Lives (Years) | [6] | -1 |
Boston Properties Limited Partnership | 7300 Boston Boulevard, Building Thirteen |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 7300 Boston Boulevard, Building Thirteen |
Type |  | Office |
Location |  | Springfield, VA |
Encumbrances |  | $ 0 |
Original Land |  | 608 |
Original Building |  | 4,773 |
Costs Capitalized Subsequent to Acquisition |  | 497 |
Land and improvements |  | 608 |
Buildings and Improvements |  | 5,270 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 5,878 |
Accumulated Depreciation |  | $ 2,737 |
Year(s) Built / Renovated |  | 2002 |
Year(s) Acquired |  | 1997 |
Depreciable Lives (Years) | [6] | -1 |
Boston Properties Limited Partnership | 7601 Boston Boulevard, Building Eight |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 7601 Boston Boulevard, Building Eight |
Type |  | Office |
Location |  | Springfield, VA |
Encumbrances |  | $ 0 |
Original Land |  | 200 |
Original Building |  | 878 |
Costs Capitalized Subsequent to Acquisition |  | 4,359 |
Land and improvements |  | 378 |
Buildings and Improvements |  | 5,059 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 5,437 |
Accumulated Depreciation |  | $ 4,107 |
Year(s) Built / Renovated |  | 1986 |
Year(s) Acquired |  | 1997 |
Depreciable Lives (Years) | [6] | -1 |
Boston Properties Limited Partnership | 7500 Boston Boulevard, Building Six |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 7500 Boston Boulevard, Building Six |
Type |  | Office |
Location |  | Springfield, VA |
Encumbrances |  | $ 0 |
Original Land |  | 138 |
Original Building |  | 3,749 |
Costs Capitalized Subsequent to Acquisition |  | 1,122 |
Land and improvements |  | 273 |
Buildings and Improvements |  | 4,736 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 5,009 |
Accumulated Depreciation |  | $ 3,845 |
Year(s) Built / Renovated |  | 1985 |
Year(s) Acquired |  | 1997 |
Depreciable Lives (Years) | [6] | -1 |
Boston Properties Limited Partnership | 8000 Corporate Court, Building Eleven |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 8000 Corporate Court, Building Eleven |
Type |  | Office |
Location |  | Springfield, VA |
Encumbrances |  | $ 0 |
Original Land |  | 136 |
Original Building |  | 3,071 |
Costs Capitalized Subsequent to Acquisition |  | 1,245 |
Land and improvements |  | 686 |
Buildings and Improvements |  | 3,766 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 4,452 |
Accumulated Depreciation |  | $ 2,826 |
Year(s) Built / Renovated |  | 1989 |
Year(s) Acquired |  | 1997 |
Depreciable Lives (Years) | [6] | -1 |
Boston Properties Limited Partnership | 7375 Boston Boulevard, Building Ten |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 7375 Boston Boulevard, Building Ten |
Type |  | Office |
Location |  | Springfield, VA |
Encumbrances |  | $ 0 |
Original Land |  | 23 |
Original Building |  | 2,685 |
Costs Capitalized Subsequent to Acquisition |  | 757 |
Land and improvements |  | 47 |
Buildings and Improvements |  | 3,418 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 3,465 |
Accumulated Depreciation |  | $ 2,532 |
Year(s) Built / Renovated |  | 1988 |
Year(s) Acquired |  | 1997 |
Depreciable Lives (Years) | [6] | -1 |
Boston Properties Limited Partnership | 7374 Boston Boulevard, Building Four |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 7374 Boston Boulevard, Building Four |
Type |  | Office |
Location |  | Springfield, VA |
Encumbrances |  | $ 0 |
Original Land |  | 241 |
Original Building |  | 1,605 |
Costs Capitalized Subsequent to Acquisition |  | 1,530 |
Land and improvements |  | 303 |
Buildings and Improvements |  | 3,073 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 3,376 |
Accumulated Depreciation |  | $ 2,494 |
Year(s) Built / Renovated |  | 1984 |
Year(s) Acquired |  | 1997 |
Depreciable Lives (Years) | [6] | -1 |
Boston Properties Limited Partnership | 7451 Boston Boulevard, Building Two |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 7451 Boston Boulevard, Building Two |
Type |  | Office |
Location |  | Springfield, VA |
Encumbrances |  | $ 0 |
Original Land |  | 249 |
Original Building |  | 1,542 |
Costs Capitalized Subsequent to Acquisition |  | 1,346 |
Land and improvements |  | 535 |
Buildings and Improvements |  | 2,602 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 3,137 |
Accumulated Depreciation |  | $ 2,357 |
Year(s) Built / Renovated |  | 1982 |
Year(s) Acquired |  | 1997 |
Depreciable Lives (Years) | [6] | -1 |
Boston Properties Limited Partnership | 32 Hartwell Avenue |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 32 Hartwell Avenue |
Type |  | Office |
Location |  | Lexington, MA |
Encumbrances |  | $ 0 |
Original Land |  | 168 |
Original Building |  | 1,943 |
Costs Capitalized Subsequent to Acquisition |  | 426 |
Land and improvements |  | 168 |
Buildings and Improvements |  | 2,369 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 2,537 |
Accumulated Depreciation |  | $ 1,840 |
Year(s) Built / Renovated |  | 1968/1979/1987 |
Year(s) Acquired |  | 1997 |
Depreciable Lives (Years) | [6] | -1 |
Boston Properties Limited Partnership | 164 Lexington Road |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 164 Lexington Road |
Type |  | Office |
Location |  | Billerica, MA |
Encumbrances |  | $ 0 |
Original Land |  | 592 |
Original Building |  | 1,370 |
Costs Capitalized Subsequent to Acquisition |  | 117 |
Land and improvements |  | 592 |
Buildings and Improvements |  | 1,487 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 2,079 |
Accumulated Depreciation |  | $ 819 |
Year(s) Built / Renovated |  | 1982 |
Year(s) Acquired |  | 1997 |
Depreciable Lives (Years) | [6] | -1 |
Boston Properties Limited Partnership | The Avant at Reston Town Center |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | The Avant at Reston Town Center |
Type |  | Residential |
Location |  | Reston, VA |
Encumbrances |  | $ 0 |
Original Land |  | 20,350 |
Original Building |  | 91,995 |
Costs Capitalized Subsequent to Acquisition |  | 830 |
Land and improvements |  | 20,350 |
Buildings and Improvements |  | 92,825 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 113,175 |
Accumulated Depreciation |  | $ 9,780 |
Year(s) Built / Renovated |  | 2014 |
Year(s) Acquired |  | 2010 |
Depreciable Lives (Years) | [6] | -1 |
Boston Properties Limited Partnership | The Lofts at Atlantic Wharf |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | The Lofts at Atlantic Wharf |
Type |  | Residential |
Location |  | Boston, MA |
Encumbrances |  | $ 0 |
Original Land |  | 3,529 |
Original Building |  | 54,891 |
Costs Capitalized Subsequent to Acquisition |  | 1,768 |
Land and improvements |  | 3,529 |
Buildings and Improvements |  | 56,659 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 60,188 |
Accumulated Depreciation |  | $ 9,622 |
Year(s) Built / Renovated |  | 2011 |
Year(s) Acquired |  | 2007 |
Depreciable Lives (Years) | [6] | -1 |
Boston Properties Limited Partnership | Boston Marriott Cambridge |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | Boston Marriott Cambridge |
Type |  | Hotel |
Location |  | Cambridge, MA |
Encumbrances |  | $ 0 |
Original Land |  | 478 |
Original Building |  | 37,918 |
Costs Capitalized Subsequent to Acquisition |  | 35,908 |
Land and improvements |  | 478 |
Buildings and Improvements |  | 73,826 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 74,304 |
Accumulated Depreciation |  | $ 47,101 |
Year(s) Built / Renovated |  | 1986 |
Year(s) Acquired |  | 1997 |
Depreciable Lives (Years) | [6] | -1 |
Boston Properties Limited Partnership | Kendall Center Green Garage |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | Kendall Center Green Garage |
Type |  | Garage |
Location |  | Cambridge, MA |
Encumbrances |  | $ 0 |
Original Land |  | 0 |
Original Building |  | 35,035 |
Costs Capitalized Subsequent to Acquisition |  | 7,034 |
Land and improvements |  | 0 |
Buildings and Improvements |  | 42,069 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 42,069 |
Accumulated Depreciation |  | $ 10,687 |
Year(s) Built / Renovated |  | 1984 |
Year(s) Acquired |  | 2006 |
Depreciable Lives (Years) | [6] | -1 |
Boston Properties Limited Partnership | Kendall Center Yellow Garage |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | Kendall Center Yellow Garage |
Type |  | Garage |
Location |  | Cambridge, MA |
Encumbrances |  | $ 0 |
Original Land |  | 1,256 |
Original Building |  | 15,697 |
Costs Capitalized Subsequent to Acquisition |  | 909 |
Land and improvements |  | 1,256 |
Buildings and Improvements |  | 16,606 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 17,862 |
Accumulated Depreciation |  | $ 5,024 |
Year(s) Built / Renovated |  | 2006 |
Year(s) Acquired |  | 2004 |
Depreciable Lives (Years) | [6] | -1 |
Boston Properties Limited Partnership | Kendall Center Blue Garage |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | Kendall Center Blue Garage |
Type |  | Garage |
Location |  | Cambridge, MA |
Encumbrances |  | $ 0 |
Original Land |  | 1,163 |
Original Building |  | 11,633 |
Costs Capitalized Subsequent to Acquisition |  | 618 |
Land and improvements |  | 1,163 |
Buildings and Improvements |  | 12,251 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 0 |
Total |  | 13,414 |
Accumulated Depreciation |  | $ 8,834 |
Year(s) Built / Renovated |  | 1990 |
Year(s) Acquired |  | 1997 |
Depreciable Lives (Years) | [6] | -1 |
Boston Properties Limited Partnership | Salesforce Tower |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | Salesforce Tower |
Type |  | Development |
Location |  | San Francisco, CA |
Encumbrances |  | $ 0 |
Original Land |  | 0 |
Original Building |  | 0 |
Costs Capitalized Subsequent to Acquisition |  | 947,106 |
Land and improvements |  | 200,349 |
Buildings and Improvements |  | 55,318 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 691,439 |
Total |  | 947,106 |
Accumulated Depreciation |  | $ 116 |
Year(s) Built / Renovated |  | N/A |
Year(s) Acquired |  | 2013 |
Depreciable Lives (Years) |  | N/A |
Boston Properties Limited Partnership | Signature at Reston |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | Signature at Reston |
Type |  | Development |
Location |  | Reston, VA |
Encumbrances |  | $ 0 |
Original Land |  | 0 |
Original Building |  | 0 |
Costs Capitalized Subsequent to Acquisition |  | 203,650 |
Land and improvements |  | 0 |
Buildings and Improvements |  | 0 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 203,650 |
Total |  | 203,650 |
Accumulated Depreciation |  | $ 0 |
Year(s) Built / Renovated |  | N/A |
Year(s) Acquired |  | 2013 |
Depreciable Lives (Years) |  | N/A |
Boston Properties Limited Partnership | Proto Kendall Square |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | Proto Kendall Square |
Type |  | Development |
Location |  | Cambridge, MA |
Encumbrances |  | $ 0 |
Original Land |  | 0 |
Original Building |  | 0 |
Costs Capitalized Subsequent to Acquisition |  | 82,905 |
Land and improvements |  | 0 |
Buildings and Improvements |  | 0 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 82,905 |
Total |  | 82,905 |
Accumulated Depreciation |  | $ 0 |
Year(s) Built / Renovated |  | N/A |
Year(s) Acquired |  | 2015 |
Depreciable Lives (Years) |  | N/A |
Boston Properties Limited Partnership | 145 Broadway |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 145 Broadway |
Type |  | Development |
Location |  | Cambridge, MA |
Encumbrances |  | $ 0 |
Original Land |  | 121 |
Original Building |  | 0 |
Costs Capitalized Subsequent to Acquisition |  | 79,776 |
Land and improvements |  | 121 |
Buildings and Improvements |  | 0 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 79,776 |
Total |  | 79,897 |
Accumulated Depreciation |  | $ 0 |
Year(s) Built / Renovated |  | NA |
Year(s) Acquired |  | 1997 |
Depreciable Lives (Years) | [6] | N/A |
Boston Properties Limited Partnership | 191 Spring Street |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 191 Spring Street |
Type |  | Development |
Location |  | Lexington, MA |
Encumbrances |  | $ 0 |
Original Land |  | 2,850 |
Original Building |  | 27,166 |
Costs Capitalized Subsequent to Acquisition |  | 34,542 |
Land and improvements |  | 2,850 |
Buildings and Improvements |  | 45,957 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 15,751 |
Total |  | 64,558 |
Accumulated Depreciation |  | $ 18,934 |
Year(s) Built / Renovated |  | 1971/1995 |
Year(s) Acquired |  | 1997 |
Depreciable Lives (Years) | [6] | (1) |
Boston Properties Limited Partnership | 6595 Springfield Center Drive (TSA Headquarters) |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 6595 Springfield Center Drive (TSA Headquarters) |
Type |  | Development |
Location |  | Springfield, VA |
Encumbrances |  | $ 0 |
Original Land |  | 0 |
Original Building |  | 0 |
Costs Capitalized Subsequent to Acquisition |  | 41,918 |
Land and improvements |  | 0 |
Buildings and Improvements |  | 0 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 41,918 |
Total |  | 41,918 |
Accumulated Depreciation |  | $ 0 |
Year(s) Built / Renovated |  | N/A |
Year(s) Acquired |  | 2007 |
Depreciable Lives (Years) | [6] | N/A |
Boston Properties Limited Partnership | MacArthur Station Residences |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | MacArthur Station Residences |
Type |  | Development |
Location |  | Oakland, CA |
Encumbrances |  | $ 0 |
Original Land |  | 0 |
Original Building |  | 0 |
Costs Capitalized Subsequent to Acquisition |  | 37,644 |
Land and improvements |  | 0 |
Buildings and Improvements |  | 0 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 37,644 |
Total |  | 37,644 |
Accumulated Depreciation |  | $ 0 |
Year(s) Built / Renovated |  | N/A |
Year(s) Acquired |  | N/A |
Depreciable Lives (Years) |  | N/A |
Boston Properties Limited Partnership | 20 CityPoint |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 20 CityPoint |
Type |  | Development |
Location |  | Waltham, MA |
Encumbrances |  | $ 0 |
Original Land |  | 0 |
Original Building |  | 0 |
Costs Capitalized Subsequent to Acquisition |  | 13,056 |
Land and improvements |  | 0 |
Buildings and Improvements |  | 0 |
Land Held for Development |  | 0 |
Development and Construction in Progress |  | 13,056 |
Total |  | 13,056 |
Accumulated Depreciation |  | $ 0 |
Year(s) Built / Renovated |  | N/A |
Year(s) Acquired |  | 2007 |
Depreciable Lives (Years) |  | N/A |
Boston Properties Limited Partnership | Tower Oaks Master Plan |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | Tower Oaks Master Plan |
Type |  | Land |
Location |  | Rockville, MD |
Encumbrances |  | $ 0 |
Original Land |  | 0 |
Original Building |  | 0 |
Costs Capitalized Subsequent to Acquisition |  | 29,419 |
Land and improvements |  | 0 |
Buildings and Improvements |  | 0 |
Land Held for Development |  | 29,419 |
Development and Construction in Progress |  | 0 |
Total |  | 29,419 |
Accumulated Depreciation |  | $ 0 |
Year(s) Built / Renovated |  | N/A |
Year(s) Acquired |  | 1998 |
Depreciable Lives (Years) |  | N/A |
Boston Properties Limited Partnership | Plaza at Almaden |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | Plaza at Almaden |
Type |  | Land |
Location |  | San Jose, CA |
Encumbrances |  | $ 0 |
Original Land |  | 0 |
Original Building |  | 0 |
Costs Capitalized Subsequent to Acquisition |  | 29,085 |
Land and improvements |  | 0 |
Buildings and Improvements |  | 0 |
Land Held for Development |  | 29,085 |
Development and Construction in Progress |  | 0 |
Total |  | 29,085 |
Accumulated Depreciation |  | $ 0 |
Year(s) Built / Renovated |  | N/A |
Year(s) Acquired |  | 2006 |
Depreciable Lives (Years) |  | N/A |
Boston Properties Limited Partnership | Springfield Metro Center |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | Springfield Metro Center |
Type |  | Land |
Location |  | Springfield, VA |
Encumbrances |  | $ 0 |
Original Land |  | 0 |
Original Building |  | 0 |
Costs Capitalized Subsequent to Acquisition |  | 19,684 |
Land and improvements |  | 0 |
Buildings and Improvements |  | 0 |
Land Held for Development |  | 19,684 |
Development and Construction in Progress |  | 0 |
Total |  | 19,684 |
Accumulated Depreciation |  | $ 0 |
Year(s) Built / Renovated |  | N/A |
Year(s) Acquired |  | 2007 |
Depreciable Lives (Years) |  | N/A |
Boston Properties Limited Partnership | 214 Third Avenue |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 214 Third Avenue |
Type |  | Land |
Location |  | Waltham, MA |
Encumbrances |  | $ 0 |
Original Land |  | 0 |
Original Building |  | 0 |
Costs Capitalized Subsequent to Acquisition |  | 13,815 |
Land and improvements |  | 0 |
Buildings and Improvements |  | 0 |
Land Held for Development |  | 13,815 |
Development and Construction in Progress |  | 0 |
Total |  | 13,815 |
Accumulated Depreciation |  | $ 0 |
Year(s) Built / Renovated |  | N/A |
Year(s) Acquired |  | 2006 |
Depreciable Lives (Years) |  | N/A |
Boston Properties Limited Partnership | Reston Gateway |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | Reston Gateway |
Type |  | Land |
Location |  | Reston, VA |
Encumbrances |  | $ 0 |
Original Land |  | 0 |
Original Building |  | 0 |
Costs Capitalized Subsequent to Acquisition |  | 13,730 |
Land and improvements |  | 0 |
Buildings and Improvements |  | 0 |
Land Held for Development |  | 13,730 |
Development and Construction in Progress |  | 0 |
Total |  | 13,730 |
Accumulated Depreciation |  | $ 0 |
Year(s) Built / Renovated |  | N/A |
Year(s) Acquired |  | 1998 |
Depreciable Lives (Years) |  | N/A |
Boston Properties Limited Partnership | 103 Fourth Avenue |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 103 Fourth Avenue |
Type |  | Land |
Location |  | Waltham, MA |
Encumbrances |  | $ 0 |
Original Land |  | 0 |
Original Building |  | 0 |
Costs Capitalized Subsequent to Acquisition |  | 12,115 |
Land and improvements |  | 0 |
Buildings and Improvements |  | 0 |
Land Held for Development |  | 12,115 |
Development and Construction in Progress |  | 0 |
Total |  | 12,115 |
Accumulated Depreciation |  | $ 0 |
Year(s) Built / Renovated |  | N/A |
Year(s) Acquired |  | 2007 |
Depreciable Lives (Years) |  | N/A |
Boston Properties Limited Partnership | Crane Meadow |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | Crane Meadow |
Type |  | Land |
Location |  | Marlborough, MA |
Encumbrances |  | $ 0 |
Original Land |  | 0 |
Original Building |  | 0 |
Costs Capitalized Subsequent to Acquisition |  | 8,836 |
Land and improvements |  | 0 |
Buildings and Improvements |  | 0 |
Land Held for Development |  | 8,836 |
Development and Construction in Progress |  | 0 |
Total |  | 8,836 |
Accumulated Depreciation |  | $ 0 |
Year(s) Built / Renovated |  | N/A |
Year(s) Acquired |  | 2000 |
Depreciable Lives (Years) |  | N/A |
Boston Properties Limited Partnership | Washingtonian North |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | Washingtonian North |
Type |  | Land |
Location |  | Gaithersburg, MD |
Encumbrances |  | $ 0 |
Original Land |  | 0 |
Original Building |  | 0 |
Costs Capitalized Subsequent to Acquisition |  | 7,645 |
Land and improvements |  | 0 |
Buildings and Improvements |  | 0 |
Land Held for Development |  | 7,645 |
Development and Construction in Progress |  | 0 |
Total |  | 7,645 |
Accumulated Depreciation |  | $ 0 |
Year(s) Built / Renovated |  | N/A |
Year(s) Acquired |  | 1998 |
Depreciable Lives (Years) |  | N/A |
Boston Properties Limited Partnership | 2100 Pennsylvania Avenue |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | 2100 Pennsylvania Avenue |
Type |  | Land |
Location |  | Washington, DC |
Encumbrances |  | $ 0 |
Original Land |  | 0 |
Original Building |  | 0 |
Costs Capitalized Subsequent to Acquisition |  | 6,543 |
Land and improvements |  | 0 |
Buildings and Improvements |  | 0 |
Land Held for Development |  | 6,543 |
Development and Construction in Progress |  | 0 |
Total |  | 6,543 |
Accumulated Depreciation |  | $ 0 |
Year(s) Built / Renovated |  | N/A |
Year(s) Acquired |  | N/A |
Depreciable Lives (Years) |  | N/A |
Boston Properties Limited Partnership | Fourth and Harrison |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | Fourth and Harrison |
Type |  | Land |
Location |  | San Francisco, CA |
Encumbrances |  | $ 0 |
Original Land |  | 0 |
Original Building |  | 0 |
Costs Capitalized Subsequent to Acquisition |  | 5,659 |
Land and improvements |  | 0 |
Buildings and Improvements |  | 0 |
Land Held for Development |  | 5,659 |
Development and Construction in Progress |  | 0 |
Total |  | 5,659 |
Accumulated Depreciation |  | $ 0 |
Year(s) Built / Renovated |  | N/A |
Year(s) Acquired |  | N/A |
Depreciable Lives (Years) |  | N/A |
Boston Properties Limited Partnership | North First Master Plan |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | North First Master Plan |
Type |  | Land |
Location |  | San Jose, CA |
Encumbrances |  | $ 0 |
Original Land |  | 0 |
Original Building |  | 0 |
Costs Capitalized Subsequent to Acquisition |  | 3,018 |
Land and improvements |  | 0 |
Buildings and Improvements |  | 0 |
Land Held for Development |  | 3,018 |
Development and Construction in Progress |  | 0 |
Total |  | 3,018 |
Accumulated Depreciation |  | $ 0 |
Year(s) Built / Renovated |  | N/A |
Year(s) Acquired |  | 2007 |
Depreciable Lives (Years) |  | N/A |
Boston Properties Limited Partnership | Broad Run Business Park |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | Broad Run Business Park |
Type |  | Land |
Location |  | Loudoun County, VA |
Encumbrances |  | $ 0 |
Original Land |  | 0 |
Original Building |  | 0 |
Costs Capitalized Subsequent to Acquisition |  | 2,367 |
Land and improvements |  | 0 |
Buildings and Improvements |  | 0 |
Land Held for Development |  | 2,367 |
Development and Construction in Progress |  | 0 |
Total |  | 2,367 |
Accumulated Depreciation |  | $ 0 |
Year(s) Built / Renovated |  | N/A |
Year(s) Acquired |  | 1998 |
Depreciable Lives (Years) |  | N/A |
Boston Properties Limited Partnership | Kendall Center Master Plan |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | Kendall Center Master Plan |
Type |  | Land |
Location |  | Cambridge, MA |
Encumbrances |  | $ 0 |
Original Land |  | 0 |
Original Building |  | 0 |
Costs Capitalized Subsequent to Acquisition |  | 2,207 |
Land and improvements |  | 0 |
Buildings and Improvements |  | 0 |
Land Held for Development |  | 2,207 |
Development and Construction in Progress |  | 0 |
Total |  | 2,207 |
Accumulated Depreciation |  | $ 0 |
Year(s) Built / Renovated |  | N/A |
Year(s) Acquired |  | N/A |
Depreciable Lives (Years) |  | N/A |
Boston Properties Limited Partnership | Weston Quarry |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | Weston Quarry |
Type |  | Land |
Location |  | Weston, MA |
Encumbrances |  | $ 0 |
Original Land |  | 0 |
Original Building |  | 0 |
Costs Capitalized Subsequent to Acquisition |  | 1,194 |
Land and improvements |  | 0 |
Buildings and Improvements |  | 0 |
Land Held for Development |  | 1,194 |
Development and Construction in Progress |  | 0 |
Total |  | 1,194 |
Accumulated Depreciation |  | $ 0 |
Year(s) Built / Renovated |  | N/A |
Year(s) Acquired |  | 2001 |
Depreciable Lives (Years) |  | N/A |
Boston Properties Limited Partnership | Reston Overlook Master Plan |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Property Name |  | Reston Overlook Master Plan |
Type |  | Land |
Location |  | Reston, VA |
Encumbrances |  | $ 0 |
Original Land |  | 0 |
Original Building |  | 0 |
Costs Capitalized Subsequent to Acquisition |  | 39 |
Land and improvements |  | 0 |
Buildings and Improvements |  | 0 |
Land Held for Development |  | 39 |
Development and Construction in Progress |  | 0 |
Total |  | 39 |
Accumulated Depreciation |  | $ 0 |
Year(s) Built / Renovated |  | N/A |
Year(s) Acquired |  | 2000 |
Depreciable Lives (Years) |  | N/A |
Minimum [Member] |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Life Used for Depreciation |  | life of the lease |
Minimum [Member] | Boston Properties Limited Partnership |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] |  |  |
Life Used for Depreciation |  | life of the lease |
[1] | Includes unamortized deferred financing costs totaling approximately $(34.7) million.
[2] | Includes pre-development costs.
[3] | Depreciation of the buildings and improvements are calculated over lives ranging from the life of the lease to 40 years.
[4] | Includes unamortized deferred financing costs totaling approximately $(34.7) million.
[5] | Includes pre-development costs.
[6] | Depreciation of the buildings and improvements are calculated over lives ranging from the life of the lease to 40 years.

X
- Definition Accumulated depreciation, furniture, fixtures and equipment + References No definition available. + Details
Name: | bxp_AccumulatedDepreciationFurnitureFixturesAndEquipment
Namespace Prefix: | bxp_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition bxp_RealEstateAndAccumulatedDepreciationDateAcquired + References No definition available. + Details
Name: | bxp_Bxp_RealEstateAndAccumulatedDepreciationDateAcquired
Namespace Prefix: | bxp_
Data Type: | us-types:durationStringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Real Estate Aggregate Accumulated Depreciation For Tax Purposes + References No definition available. + Details
Name: | bxp_RealEstateAggregateAccumulatedDepreciationForTaxPurposes
Namespace Prefix: | bxp_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Real Estate Aggregate Cost For Tax Purposes + References No definition available. + Details
Name: | bxp_RealEstateAggregateCostForTaxPurposes
Namespace Prefix: | bxp_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Real Estate and Accumulated Depreciation, Carrying Amount of Development and Construction in Progress + References No definition available. + Details
Name: | bxp_RealEstateAndAccumulatedDepreciationCarryingAmountOfDevelopmentAndConstructionInProgress
Namespace Prefix: | bxp_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Real Estate and Accumulated Depreciation, Carrying Amount of Land and Improvements + References No definition available. + Details
Name: | bxp_RealEstateAndAccumulatedDepreciationCarryingAmountOfLandAndImprovements
Namespace Prefix: | bxp_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Real Estate and Accumulated Depreciation, Carrying Amount of Land Held for Development + References No definition available. + Details
Name: | bxp_RealEstateAndAccumulatedDepreciationCarryingAmountOfLandHeldForDevelopment
Namespace Prefix: | bxp_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The date the property was constructed and if applicable renovated + References No definition available. + Details
Name: | bxp_RealEstateAndAccumulatedDepreciationDateOfConstructionOrRenovation
Namespace Prefix: | bxp_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Real Estate And Accumulated Depreciation Description Of Property Location + References No definition available. + Details
Name: | bxp_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyLocation
Namespace Prefix: | bxp_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Real Estate And Accumulated Depreciation Description Of Property Type + References No definition available. + Details
Name: | bxp_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyType
Namespace Prefix: | bxp_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Real Estate And Accumulated Depreciation Life Used For Depreciation Years + References No definition available. + Details
Name: | bxp_RealEstateAndAccumulatedDepreciationLifeUsedForDepreciationYears
Namespace Prefix: | bxp_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Real Estate And Accumulated Depreciation Name of Property + References No definition available. + Details
Name: | bxp_RealEstateAndAccumulatedDepreciationNameofProperty
Namespace Prefix: | bxp_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Real Estate and Accumulated Depreiation Life used for Depreciation + References No definition available. + Details
Name: | bxp_RealEstateAndAccumulatedDepreiationLifeUsedForDepreciation
Namespace Prefix: | bxp_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28555-108399 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.17) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_DeferredFinanceCostsNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount before accumulated depreciation of equipment commonly used in offices and stores that have no permanent connection to the structure of a building or utilities. Examples include, but are not limited to, desks, chairs, tables, and bookcases. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 + Details
Name: | us-gaap_FurnitureAndFixturesGross
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of accumulated depreciation pertaining to real estate investments for entities with a substantial portion of business acquiring and holding investment real estate. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 970 -SubTopic 360 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-28.FN4) -URI http://asc.fasb.org/extlink&oid=6590653&loc=d3e638233-123024 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 10 -Section S99 -Paragraph 6 -Subparagraph (SX 210.5-04.(c) Schedule III) -URI http://asc.fasb.org/extlink&oid=27047687&loc=d3e5864-122674 + Details
Name: | us-gaap_RealEstateAccumulatedDepreciation
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of lien or mortgage outstanding on real estate investment properties for entities with a substantial portion of business acquiring and holding investment real estate. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 970 -SubTopic 360 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-28) -URI http://asc.fasb.org/extlink&oid=6590653&loc=d3e638233-123024 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 10 -Section S99 -Paragraph 6 -Subparagraph (SX 210.5-04.(c) Schedule III) -URI http://asc.fasb.org/extlink&oid=27047687&loc=d3e5864-122674 + Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount before accumulated depreciation of buildings and improvements for entities with a substantial portion of business acquiring and holding investment real estate. Excludes real estate not held as an investment or interest. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 10 -Section S99 -Paragraph 6 -Subparagraph (SX 210.5-04.(c) Schedule III) -URI http://asc.fasb.org/extlink&oid=27047687&loc=d3e5864-122674 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 970 -SubTopic 360 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-28) -URI http://asc.fasb.org/extlink&oid=6590653&loc=d3e638233-123024 + Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of carrying costs of properties that were capitalized after acquisition, for example, but not limited to, real estate taxes and insurance for entities with a substantial portion of business acquiring and holding investment real estate. Excludes initial purchase price and improvements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 970 -SubTopic 360 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-28) -URI http://asc.fasb.org/extlink&oid=6590653&loc=d3e638233-123024 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 10 -Section S99 -Paragraph 6 -Subparagraph (SX 210.5-04.(c) Schedule III) -URI http://asc.fasb.org/extlink&oid=27047687&loc=d3e5864-122674 + Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Initial cost of buildings and improvements for entities with a substantial portion of business acquiring and holding investment real estate. Excludes real estate not held as an investment or interest. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 10 -Section S99 -Paragraph 6 -Subparagraph (SX 210.5-04.(c) Schedule III) -URI http://asc.fasb.org/extlink&oid=27047687&loc=d3e5864-122674 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 970 -SubTopic 360 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-28) -URI http://asc.fasb.org/extlink&oid=6590653&loc=d3e638233-123024 + Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Initial cost of land for entities with a substantial portion of business acquiring and holding investment real estate. Excludes real estate not held as an investment or interest. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 970 -SubTopic 360 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-28) -URI http://asc.fasb.org/extlink&oid=6590653&loc=d3e638233-123024 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 10 -Section S99 -Paragraph 6 -Subparagraph (SX 210.5-04.(c) Schedule III) -URI http://asc.fasb.org/extlink&oid=27047687&loc=d3e5864-122674 + Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Useful life on which depreciation was computed for entities with a substantial portion of business acquiring and holding investment real estate, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 10 -Section S99 -Paragraph 6 -Subparagraph (SX 210.5-04.(c) Schedule III) -URI http://asc.fasb.org/extlink&oid=27047687&loc=d3e5864-122674 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 970 -SubTopic 360 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-28) -URI http://asc.fasb.org/extlink&oid=6590653&loc=d3e638233-123024 + Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationLifeUsedForDepreciation1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount, before accumulated depreciation, of real estate investments for entities with a substantial portion of business acquiring and holding investment real estate. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 10 -Section S99 -Paragraph 6 -Subparagraph (SX 210.5-04.(c) Schedule III) -URI http://asc.fasb.org/extlink&oid=27047687&loc=d3e5864-122674 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 970 -SubTopic 360 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-28.4) -URI http://asc.fasb.org/extlink&oid=6590653&loc=d3e638233-123024 + Details
Name: | us-gaap_RealEstateGrossAtCarryingValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_SevenSixtySevenFifthAvenueTheGMBuildingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_PrudentialCenterMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_EmbarcaderoCenterMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_ThreeNineNineParkAvenueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_TwoHundredClarendonStreetMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_SixZeroOneLexingtonAvenueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_TwoFiveZeroWestFiftyFifthStreetMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_OneZeroZeroFederalStreetMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_CarnegieCenterMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_TimesSquareTowerMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_AtlanticWharfMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_FountainSquareMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_FiveOneZeroMadisonAvenueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_FiveNineNineLexingtonAvenueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_SixEightZeroFolsomStreetMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_SouthofMarketandDemocracyTowerMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_SixZeroOneMassachusettsAvenueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_BayColonyCorporateCenterMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_GatewayCenterMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_FiveThreeFiveMissionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_TwoTwoZeroZeroPennsylvaniaAvenueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_MountainViewResearchMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_ReservoirPlaceMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_OneThreeThreeZeroConnecticutAvenueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_KingstowneTowneCenterMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_OneThreeThreeThreeNewHampshireAvenueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_OneFreedomSquareMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_WestonCorporateCenterMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_CapitalGalleryMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_TwoFreedomSquareMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_OneAndTwoRestonOverlookMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_DiscoverySquareMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_ThreeFiveFiveMainStreetMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_OneFourZeroKendrickStreetMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_TenCityPointMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_NineZeroBroadwayMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_TwoThreeZeroCitypointMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_SevenSevenCitypointMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_WalthamWestonCorporateCenterMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_PetersonWayMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_NorthFirstBusinessParkMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_ThreeZeroZeroBinneyStreetMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_TwoFourFourZeroWestElCaminoRealMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_WisconsinPlaceMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_RestonCorporateCenterMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_NewDominionTechnologyParkBldgTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_TwoZeroZeroWestStreetMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_NewDominionTechnologyParkBldgOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_SumnerSquareMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_TwoFiveFiveMainStreetMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_UniversityPlaceMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_TwoSixZeroZeroTowerOaksBoulevardMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_QuorumOfficeParkMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_FiveZeroZeroEStreetMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_OneFiveZeroBroadwayMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_ThreeTwoFiveMainStreetMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_OneZeroFiveBroadwayMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_LexingtonOfficeParkMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_TwoZeroOneSpringStreetMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_ThePointMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_SixNineZeroFolsomStreetMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_NineOneHartwellAvenueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_NineTwoOneZeroZeroHaydenAvenueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_OneEightOneSpringStreetMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_OneNineFiveWestStreetMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_ThreeThreeHaydenAvenueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_SevenFiveZeroOneBostonBoulevardMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_TwoFiveZeroBinneyStreetMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_SevenFourThreeFiveBostonBoulevardMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_EightZeroZeroZeroGraingerCourtBuildingFiveMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_SevenFourFiveZeroBostonBoulevardMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_FourFiveThreeRavendaleDriveMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_SeventeenHartwellAvenueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_SevenThreeZeroZeroBostonBoulevardBuildingThirteenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_SevenSixZeroOneBostonBoulevardBuildingEightMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_SevenFiveZeroZeroBostonBoulevardBuildingSixMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_EightZeroZeroZeroCorporateCourtBuildingElevenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_SevenThreeSevenFiveBostonBoulevardBuildingTenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_SevenThreeSevenFourBostonBoulevardBuildingFourMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_SevenFourFiveOneBostonBoulevardBuildingTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_ThirtyTwoHartwellAvenueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_OneSixFourLexingtonRoadMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_AvantAtRestonTownCenterResidentialMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_LoftsAtAtlanticWharfMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_BostonMarriottCambridgeMemberMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_KendallCenterGreenGarageMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_KendallCenterYellowGarageMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_KendallCenterBlueGarageMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_SalesforeceTowerformerlyTransbayTowerMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_RestonsignaturesiteMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_CambridgeresidentialprojectMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_OneFourFiveBroadwayMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_OneNineOneSpringStreetMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_SixFiveNineFiveSpringfieldCenterDriveMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_MacArthurStationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_TwoZeroCityPointMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_TowerOaksMasterPlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_PlazaAtAlmadenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_SpringfieldMetroCenterMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_TwoOneFourThirdAvenueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_RestonGatewayMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_OneZeroThreeFourthAvenueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_CraneMeadowMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_WashingtonianNorthMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_TwoOneZeroZeroPennsylvaniaAvenueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_FourthandHarrisonMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_NorthFirstMasterPlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_BroadRunBusinessParkMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_KendallCenterMasterPlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_WestonQuarryMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=bxp_RestonOverlookMasterPlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=us-gaap_SubsidiariesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RangeAxis=us-gaap_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |