Real Estate and Accumulated Depreciation Real Estate and Accumulated Depreciation (Tables)

12 Months Ended

Dec. 31, 2016

SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]

Real Estate and Accumulated Depreciation, By Property [Table Text Block]

Boston Properties, Inc. Schedule 3 - Real Estate and Accumulated Depreciation December 31, 2016 (dollars in thousands)
Property Name	Type	Location	Encumbrances		Original				Costs Capitalized Subsequent to Acquisition		Land and Improvements		Building and Improvements		Land Held for Development		Development and Construction in Progress		Total		Accumulated Depreciation		Year(s) Built/ Renovated	Year(s) Acquired	Depreciable Lives  (Years)
					Land		Building
767 Fifth Avenue (the General Motors Building)	Office	New York, NY	$	1,333,625	$	1,796,252	$	1,532,654	$	75,211	$	1,796,252	$	1,607,865	$	—	$	—	$	3,404,117	$	189,209	1968	2013	(1)
Prudential Center	Office	Boston, MA	—		92,077		734,594		656,606		115,638		1,214,787		—		152,852		1,483,277		482,661		1965/1993/2002/2016	1998/1999/2000	(1)
Embarcadero Center	Office	San Francisco, CA	—		179,697		847,410		343,726		195,987		1,174,846		—		—		1,370,833		560,416		1970/1989	1998-1999	(1)
399 Park Avenue	Office	New York, NY	—		339,200		700,358		132,062		354,107		817,513		—		—		1,171,620		287,748		1961	2002	(1)
200 Clarendon Street and Garage	Office	Boston, MA	—		219,543		667,884		115,996		219,616		777,557		6,250		—		1,003,423		140,629		1976	2010	(1)
601 Lexington Avenue	Office	New York, NY	684,858		241,600		494,782		196,359		289,639		620,487		—		22,615		932,741		239,984		1977/1997	2001	(1)
250 West 55th Street	Office	New York, NY	—		285,263		603,167		35,668		285,263		638,835		—		—		924,098		49,852		2014	2007	(1)
Times Square Tower	Office	New York, NY	—		165,413		380,438		87,583		169,193		464,241		—		—		633,434		178,904		2004	2000	(1)
Carnegie Center	Office	Princeton, NJ	—		105,107		377,259		149,576		106,734		522,654		2,554		—		631,942		211,035		1983-2016	1998/1999/2000/2007/2014	(1)
100 Federal Street	Office	Boston, MA	—		131,067		435,954		38,611		131,067		474,565		—		—		605,632		77,409		1971-1975	2012	(1)
Atlantic Wharf	Office	Boston, MA	—		63,988		454,537		17,442		63,988		471,979		—		—		535,967		85,984		2011	2007	(1)
Fountain Square	Office	Reston, VA	—		56,853		306,298		17,748		56,853		320,759		3,287		—		380,899		50,106		1986-1990	2012	(1)
510 Madison Avenue	Office	New York, NY	—		103,000		253,665		21,952		103,000		275,617		—		—		378,617		44,515		2012	2010	(1)
599 Lexington Avenue	Office	New York, NY	—		81,040		100,507		169,222		87,852		262,917		—		—		350,769		168,776		1986	1997	(1)
680 Folsom Street	Office	San Francisco, CA	—		72,545		219,766		7,352		72,545		227,118		—		—		299,663		21,845		2014	2012	(1)
South of Market and Democracy Tower	Office	Reston, VA	—		13,603		237,479		15,455		13,687		252,850		—		—		266,537		79,868		2008-2009	2003	(1)
601 Massachusetts Avenue	Office	Washington, DC	—		95,310		165,173		12		95,322		165,173		—		—		260,495		6,534		2016	2008	(1)
Bay Colony Corporate Center	Office	Waltham, MA	—		18,789		148,451		68,371		18,789		216,822		—		—		235,611		46,015		1985-1989	2011	(1)
Gateway Center	Office	San Francisco, CA	—		28,255		139,245		55,680		30,627		192,553		—		—		223,180		98,003		1984/1986/2002	1999	(1)
535 Mission Street	Office	San Francisco, CA	—		40,933		148,378		2,015		40,933		150,393		—		—		191,326		8,844		2015	2013	(1)
2200 Pennsylvania Avenue	Office	Washington, DC	—		—		183,541		5,047		—		188,588		—		—		188,588		39,956		2011	2008	(1)
Mountain View Research Park	Office	Mountain View, CA	—		95,066		68,373		6,491		95,066		74,864		—		—		169,930		12,849		1977-1981/2007-2013	2013	(1)
Reservoir Place	Office	Waltham, MA	—		18,605		92,619		53,163		20,118		129,712		—		14,557		164,387		61,362		1955/1987	1997/1998	(1)
1330 Connecticut Avenue	Office	Washington, DC	—		25,982		82,311		32,276		27,135		113,434		—		—		140,569		34,137		1984	2004	(1)
1333 New Hampshire Avenue	Office	Washington, DC	—		34,032		85,660		11,147		35,382		95,457		—		—		130,839		37,996		1996	2003	(1)
Kingstowne Towne Center	Office	Alexandria, VA	—		18,021		109,038		1,083		18,062		110,080		—		—		128,142		36,551		2003-2006	2007	(1)
Capital Gallery	Office	Washington, DC	—		4,725		29,565		89,028		8,662		114,656		—		—		123,318		61,569		1981/2006	2007	(1)

Boston Properties, Inc. Schedule 3 - Real Estate and Accumulated Depreciation December 31, 2016 (dollars in thousands)
Property Name	Type	Location	Encumbrances	Original		Costs Capitalized Subsequent to Acquisition		Land and Improvements	Building and Improvements	Land Held for Development	Development and Construction in Progress	Total	Accumulated Depreciation	Year(s) Built/ Renovated	Year(s) Acquired	Depreciable Lives  (Years)
				Land	Building
One Freedom Square	Office	Reston, VA	—	9,929	84,504	28,646		11,293	111,786	—	—	123,079	45,550	2000	2003	(1)
Weston Corporate Center	Office	Weston, MA	—	25,753	92,312	(123	)	25,854	92,088	—	—	117,942	20,074	2010	2001	(1)
Two Freedom Square	Office	Reston, VA	—	13,930	77,739	22,756		15,420	99,005	—	—	114,425	44,569	2001	2003	(1)
One and Two Reston Overlook	Office	Reston, VA	—	16,456	66,192	24,634		16,179	91,103	—	—	107,282	40,513	1999	2000	(1)
Discovery Square	Office	Reston, VA	—	11,198	71,782	22,642		12,533	93,089	—	—	105,622	39,605	2001	2003	(1)
140 Kendrick Street	Office	Needham, MA	—	18,095	66,905	15,466		19,092	81,374	—	—	100,466	26,141	2000	2004	(1)
355 Main Street	Office	Cambridge, MA	—	18,863	53,346	27,658		21,173	78,694	—	—	99,867	25,345	1981/1996/2013	2006	(1)
90 Broadway	Office	Cambridge, MA	—	19,104	52,078	17,048		20,785	67,445	—	—	88,230	17,087	1983/1998/2013	2006	(1)
10 CityPoint	Office	Waltham, MA	—	1,953	85,752	163		2,116	85,752	—	—	87,868	1,601	2016	1997	(1)
230 CityPoint	Office	Waltham, MA	—	13,189	49,823	20,187		13,593	69,606	—	—	83,199	23,437	1992	2005	(1)
Waltham Weston Corporate Center	Office	Waltham, MA	—	10,385	60,694	10,889		11,097	70,871	—	—	81,968	27,310	2003	1999	(1)
77 CityPoint	Office	Waltham, MA	—	13,847	60,383	5,703		13,873	66,060	—	—	79,933	20,981	2008	2001	(1)
3625-3635 Peterson Way	Office	Santa Clara, CA	—	63,206	14,879	31		63,206	14,879	31	—	78,116	2,093	1979	2016	(1)
North First Business Park	Office	San Jose, CA	—	58,402	13,069	3,932		23,377	16,116	35,910	—	75,403	15,811	1981	2007	(1)
2440 West El Camino Real	Office	Mountain View, CA	—	16,741	51,285	1,814		16,741	53,099	—	—	69,840	9,817	1987/2003	2011	(1)
300 Binney Street	Office	Cambridge, MA	—	18,080	51,262	140		18,080	51,402	—	—	69,482	6,059	2013	2009	(1)
Reston Corporate Center	Office	Reston, VA	—	9,135	50,857	6,256		10,148	56,100	—	—	66,248	25,244	1984	1998	(1)
Wisconsin Place	Office	Chevy Chase, MD	—	—	53,349	9,884		—	63,233	—	—	63,233	16,406	2009	2004	(1)
New Dominion Technology Park, Bldg. Two	Office	Herndon, VA	—	5,584	51,868	4,094		6,510	55,036	—	—	61,546	21,908	2004	1998	(1)
200 West Street	Office	Waltham, MA	—	16,148	24,983	10,102		16,813	34,420	—	—	51,233	19,535	1999	1997	(1)
New Dominion Technology Park, Bldg. One	Office	Herndon, VA	35,485	3,880	43,227	3,883		4,583	46,407	—	—	50,990	24,362	2001	1998	(1)
Sumner Square	Office	Washington, DC	—	624	28,745	19,428		1,478	47,319	—	—	48,797	22,237	1985	1999	(1)
University Place	Office	Cambridge, MA	9,119	—	37,091	9,501		390	46,202	—	—	46,592	25,207	1985	1998	(1)
2600 Tower Oaks Boulevard	Office	Rockville, MD	—	4,243	31,125	9,081		4,785	39,664	—	—	44,449	19,801	2001	1998	(1)
255 Main Street	Office	Cambridge, MA	—	134	25,110	17,087		548	41,783	—	—	42,331	27,499	1987	1997	(1)
Quorum Office Park	Office	Chelmsford, MA	—	3,750	32,454	5,813		5,187	36,830	—	—	42,017	15,633	2001	2000	(1)
500 E Street	Office	Washington, DC	—	109	22,420	13,219		2,379	33,369	—	—	35,748	22,987	1987	1997	(1)
150 Broadway	Office	Cambridge, MA	—	850	25,042	8,623		1,323	33,192	—	—	34,515	15,545	1999	1997	(1)
325 Main Street	Office	Cambridge, MA	—	174	12,200	12,256		965	23,665	—	—	24,630	12,266	1987/2013	1997	(1)
105 Broadway	Office	Cambridge, MA	—	1,299	12,943	7,198		2,395	19,045	—	—	21,440	13,018	1990	1997	(1)
Lexington Office Park	Office	Lexington, MA	—	998	1,426	17,481		1,264	18,641	—	—	19,905	12,490	1982	1997	(1)
40 Shattuck Road	Office	Andover, MA	—	709	14,740	3,368		893	17,924	—	—	18,817	7,505	2001	1997	(1)
201 Spring Street	Office	Lexington, MA	—	2,849	15,303	14		3,124	15,042	—	—	18,166	7,462	1997	1997	(1)
The Point	Office	Waltham, MA	—	6,395	10,040	408		6,480	10,363	—	—	16,843	397	2015	2007	(1)
92-100 Hayden Avenue	Office	Lexington, MA	—	594	6,748	8,181		802	14,721	—	—	15,523	12,062	1985	1997	(1)
91 Hartwell Avenue	Office	Lexington, MA	—	784	6,464	8,254		941	14,561	—	—	15,502	9,062	1985	1997	(1)

Boston Properties, Inc. Schedule 3 - Real Estate and Accumulated Depreciation December 31, 2016 (dollars in thousands)
Property Name	Type	Location	Encumbrances	Original		Costs Capitalized Subsequent to Acquisition	Land and Improvements	Building and Improvements	Land Held for Development	Development and Construction in Progress	Total	Accumulated Depreciation	Year(s) Built/ Renovated	Year(s) Acquired	Depreciable Lives  (Years)
				Land	Building
690 Folsom Street	Office	San Francisco, CA	—	3,219	11,038	1,157	3,219	12,195	—	—	15,414	801	2015	2012	(1)
145 Broadway	Office	Cambridge, MA	—	121	5,535	7,173	324	10,637	—	1,868	12,829	8,676	1984	1997	(1)
181 Spring Street	Office	Lexington, MA	—	1,066	9,520	2,195	1,160	11,621	—	—	12,781	4,876	1999	1997	(1)
195 West Street	Office	Waltham, MA	—	1,611	6,652	4,340	1,858	10,745	—	—	12,603	7,517	1990	1997	(1)
33 Hayden Avenue	Office	Lexington, MA	—	266	3,234	8,787	425	11,862	—	—	12,287	7,612	1979	1997	(1)
7501 Boston Boulevard, Building Seven	Office	Springfield, VA	—	665	9,273	535	791	9,682	—	—	10,473	4,596	1997	1997	(1)
7435 Boston Boulevard, Building One	Office	Springfield, VA	—	392	3,822	5,116	659	8,671	—	—	9,330	6,356	1982	1997	(1)
250 Binney Street	Office	Cambridge, MA	—	110	4,483	3,593	273	7,913	—	—	8,186	4,684	1983	1997	(1)
7450 Boston Boulevard, Building Three	Office	Springfield, VA	—	1,165	4,681	1,807	1,430	6,223	—	—	7,653	3,321	1987	1998	(1)
8000 Grainger Court, Building Five	Office	Springfield, VA	—	366	4,282	2,607	601	6,654	—	—	7,255	5,416	1984	1997	(1)
453 Ravendale Drive	Office	Mountain View, CA	—	5,477	1,090	408	5,477	1,498	—	—	6,975	338	1977	2012	(1)
7500 Boston Boulevard, Building Six	Office	Springfield, VA	—	138	3,749	2,487	406	5,968	—	—	6,374	4,538	1985	1997	(1)
17 Hartwell Avenue	Office	Lexington, MA	—	26	150	6,109	65	6,220	—	—	6,285	552	1968	1997	(1)
7601 Boston Boulevard, Building Eight	Office	Springfield, VA	—	200	878	5,047	551	5,574	—	—	6,125	4,043	1986	1997	(1)
7300 Boston Boulevard, Building Thirteen	Office	Springfield, VA	—	608	4,773	709	661	5,429	—	—	6,090	5,012	2002	1997	(1)
8000 Corporate Court, Building Eleven	Office	Springfield, VA	—	136	3,071	1,615	775	4,047	—	—	4,822	2,784	1989	1997	(1)
7375 Boston Boulevard, Building Ten	Office	Springfield, VA	—	23	2,685	912	93	3,527	—	—	3,620	2,472	1988	1997	(1)
7374 Boston Boulevard, Building Four	Office	Springfield, VA	—	241	1,605	1,738	398	3,186	—	—	3,584	2,452	1984	1997	(1)
7451 Boston Boulevard, Building Two	Office	Springfield, VA	—	249	1,542	1,659	613	2,837	—	—	3,450	2,330	1982	1997	(1)
32 Hartwell Avenue	Office	Lexington, MA	—	168	1,943	1,012	314	2,809	—	—	3,123	1,905	1968/1979/1987	1997	(1)
164 Lexington Road	Office	Billerica, MA	—	592	1,370	319	643	1,638	—	—	2,281	827	1982	1997	(1)
The Avant at Reston Town Center	Residential	Reston, VA	—	20,350	91,995	815	20,350	92,810	—	—	113,160	7,306	2014	2010	(1)
The Lofts at Atlantic Wharf	Residential	Boston, MA	—	3,529	54,891	1,663	3,529	56,554	—	—	60,083	8,105	2011	2007	(1)
Boston Marriott Cambridge	Hotel	Cambridge, MA	—	478	37,918	37,067	1,201	74,262	—	—	75,463	50,954	1986	1997	(1)
Kendall Center Green Garage	Garage	Cambridge, MA	—	—	35,035	7,391	103	42,323	—	—	42,426	9,334	1984	2006	(1)
Kendall Center Yellow Garage	Garage	Cambridge, MA	—	1,256	15,697	1,571	1,434	17,090	—	—	18,524	4,723	2006	2004	(1)
Kendall Center Blue Garage	Garage	Cambridge, MA	—	1,163	11,633	2,770	1,579	13,987	—	—	15,566	9,325	1990	1997	(1)
Salesforce Tower	Development	San Francisco, CA	—	—	—	723,866	—	—	—	723,866	723,866	—	N/A	2013	N/A
Signature at Reston (formerly Reston Signature Site)	Development	Reston, VA	—	—	—	96,444	—	—	—	96,444	96,444	—	N/A	2013	N/A
191 Spring Street	Development	Lexington, MA	—	2,850	27,166	3,134	3,151	28,576	—	1,423	33,150	21,660	1971/1995	1997	(1)

Boston Properties, Inc. Schedule 3 - Real Estate and Accumulated Depreciation December 31, 2016 (dollars in thousands)
Property Name	Type	Location	Encumbrances				Original				Costs Capitalized Subsequent to Acquisition		Land and Improvements		Building and Improvements		Land Held for Development				Development and Construction in Progress		Total		Accumulated Depreciation		Year(s) Built/ Renovated	Year(s) Acquired	Depreciable Lives  (Years)
							Land		Building
Proto at Cambridge (formerly Cambridge Residential / 88 Ames)	Development	Cambridge, MA	—				—		—		24,334		—		—		—				24,334		24,334		—		N/A	2015	N/A
Springfield Metro Center	Land	Springfield, VA	—				—		—		35,430		—		—		35,430				—		35,430		—		N/A	2007	N/A
Tower Oaks Master Plan	Land	Rockville, MD	—				—		—		29,209		—		—		29,209				—		29,209		—		N/A	1998	N/A
Plaza at Almaden	Land	San Jose, CA	—				—		—		29,081		—		—		29,081				—		29,081		—		N/A	2006	N/A
6601 & 6605 Springfield Center Drive	Land	Springfield, VA	—				—		—		13,866		—		—		13,866				—		13,866		—		N/A	2007	N/A
214 Third Avenue	Land	Waltham, MA	—				—		—		13,795		—		146		13,649				—		13,795		—		N/A	2006	N/A
103 Fourth Avenue	Land	Waltham, MA	—				—		—		12,052		—		49		12,003				—		12,052		—		N/A	2007	N/A
20 CityPoint	Land	Waltham, MA	—				—		—		11,666		—		—		11,666				—		11,666		—		N/A	2007	N/A
Reston Gateway	Land	Reston, VA	—				—		—		10,841		—		—		10,841				—		10,841		—		N/A	1998	N/A
Reston Eastgate	Land	Reston, VA	—				—		—		9,906		—		—		9,906				—		9,906		—		N/A	2001	N/A
Crane Meadow	Land	Marlborough, MA	—				—		—		8,754		—		—		8,754				—		8,754		—		N/A	2000	N/A
Washingtonian North	Land	Gaithersburg, MD	—				—		—		7,697		—		—		7,697				—		7,697		—		N/A	1998	N/A
Kendall Center Master Plan	Land	Cambridge, MA	—				—		—		4,062		—		—		4,062				—		4,062		—		N/A	N/A	N/A
Fourth and Harrison	Land	San Francisco, CA	—				—		—		3,936		—		—		3,936				—		3,936		—		N/A	N/A	N/A
North First Master Plan	Land	San Jose, CA	—				—		—		3,014		—		—		3,014				—		3,014		—		N/A	2007	N/A
Broad Run Business Park	Land	Loudoun County, VA	—				—		—		2,694		—		—		2,694				—		2,694		—		N/A	1998	N/A
MacArthur Station	Land	Oakland, CA	—				—		—		1,316		—		—		1,316				—		1,316		—		N/A	N/A	N/A
30 Shattuck Road	Land	Andover, MA	—				—		—		1,214		—		—		1,214				—		1,214		—		N/A	1997	N/A
2100 Pennsylvania Avenue	Land	Washington, DC	—				—		—		286		—		—		286				—		286		—		N/A	N/A	N/A
			$	2,063,087	(2	)	$	4,759,821	$	11,416,957	$	3,937,798	$	4,879,020	$	13,950,941	$	246,656	(3	)	$	1,037,959	$	20,114,576	$	4,201,891

Note: Total Real Estate does not include Furniture, Fixtures and Equipment totaling approximately $32,687. Accumulated Depreciation does not include approximately $20,344 of accumulated depreciation related to Furniture, Fixtures and Equipment.

The aggregate cost and accumulated depreciation for tax purposes was approximately $15.8 billion and $3.2 billion, respectively.

(1) Depreciation of the buildings and improvements are calculated over lives ranging from the life of the lease to 40 years.

(2) Includes the unamortized balance of the historical fair value adjustment and unamortized deferred financing costs totaling approximately $33.8 million and $(2.4) million, respectively.

(3) Includes pre-development costs.

Activity of Real Estate and Accumulated Depreciation [Table Text Block]

A summary of activity for real estate and accumulated depreciation is as follows:

	2016			2015			2014
Real Estate:
Balance at the beginning of the year	$	19,451,683		$	19,208,417		$	18,953,601
Additions to/improvements of real estate	977,287			700,792			594,296
Assets sold/written-off	(314,394		)	(457,526		)	(339,480		)
Balance at the end of the year	$	20,114,576		$	19,451,683		$	19,208,417
Accumulated Depreciation:
Balance at the beginning of the year	$	3,905,940		$	3,529,978		$	3,145,701
Depreciation expense	560,024			486,450			456,176
Assets sold/written-off	(264,073		)	(110,488		)	(71,899		)
Balance at the end of the year	$	4,201,891		$	3,905,940		$	3,529,978

Note: Real Estate and Accumulated Depreciation amounts do not include Furniture, Fixtures and Equipment.

Boston Properties Limited Partnership

SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]

Real Estate and Accumulated Depreciation, By Property [Table Text Block]

Boston Properties Limited Partnership Schedule 3—Real Estate and Accumulated Depreciation December 31, 2016 (dollars in thousands)
					Original				Costs Capitalized Subsequent to Acquisition			Land and Improvements		Building and Improvements		Land Held for Development		Development and Construction in Progress		Total		Accumulated Depreciation		Year(s) Built/ Renovated	Year(s) Acquired	Depreciable Lives (Years)
Property Name	Type	Location	Encumbrances		Land		Building
767 Fifth Avenue (the General Motors Building)	Office	New York, NY	$	1,333,625	$	1,796,252	$	1,532,654	$	75,211		$	1,796,252	$	1,607,865	$	—	$	—	$	3,404,117	$	189,209	1968	2013	(1)
Prudential Center	Office	Boston, MA	—		92,077		734,594		596,236			100,540		1,169,515		—		152,852		1,422,907		470,161		1965/1993/2002/2016	1998/1999/2000	(1)
Embarcadero Center	Office	San Francisco, CA	—		179,697		847,410		281,345			180,420		1,128,032		—		—		1,308,452		547,434		1970/1989	1998-1999	(1)
399 Park Avenue	Office	New York, NY	—		339,200		700,358		72,454			339,200		772,812		—		—		1,112,012		275,380		1961	2002	(1)
200 Clarendon Street and Garage	Office	Boston, MA	—		219,543		667,884		115,996			219,616		777,557		6,250		—		1,003,423		140,629		1976	2010	(1)
250 West 55th Street	Office	New York, NY	—		285,263		603,167		35,668			285,263		638,835		—		—		924,098		49,852		2014	2007	(1)
601 Lexington Avenue	Office	New York, NY	684,858		241,600		494,782		159,273			279,281		593,759		—		22,615		895,655		232,590		1977/1997	2001	(1)
Carnegie Center	Office	Princeton, NJ	—		105,107		377,259		132,258			102,403		509,667		2,554		—		614,624		207,448		1983-2016	1998/1999/2000/2007/2014	(1)
100 Federal Street	Office	Boston, MA	—		131,067		435,954		38,611			131,067		474,565		—		—		605,632		77,409		1971-1975	2012	(1)
Times Square Tower	Office	New York, NY	—		165,413		380,438		49,604			159,694		435,761		—		—		595,455		171,039		2004	2000	(1)
Atlantic Wharf	Office	Boston, MA	—		63,988		454,537		17,442			63,988		471,979		—		—		535,967		85,984		2011	2007	(1)
Fountain Square	Office	Reston, VA	—		56,853		306,298		17,748			56,853		320,759		3,287		—		380,899		50,106		1986-1990	2012	(1)
510 Madison Avenue	Office	New York, NY	—		103,000		253,665		21,952			103,000		275,617		—		—		378,617		44,515		2012	2010	(1)
599 Lexington Avenue	Office	New York, NY	—		81,040		100,507		141,980			81,040		242,487		—		—		323,527		163,140		1986	1997	(1)
680 Folsom Street	Office	San Francisco, CA	—		72,545		219,766		7,352			72,545		227,118		—		—		299,663		21,845		2014	2012	(1)
South of Market and Democracy Tower	Office	Reston, VA	—		13,603		237,479		15,119			13,603		252,598		—		—		266,201		79,814		2008-2009	2003	(1)
601 Massachusetts Avenue	Office	Washington, DC	—		95,310		165,173		—			95,310		165,173		—		—		260,483		6,534		2016	2008	(1)
Bay Colony Corporate Center	Office	Waltham, MA	—		18,789		148,451		68,371			18,789		216,822		—		—		235,611		46,015		1985-1989	2011	(1)
Gateway Center	Office	San Francisco, CA	—		28,255		139,245		49,291			29,029		187,762		—		—		216,791		96,681		1984/1986/2002	1999	(1)
535 Mission Street	Office	San Francisco, CA	—		40,933		148,378		2,015			40,933		150,393		—		—		191,326		8,844		2015	2013	(1)
2200 Pennsylvania Avenue	Office	Washington, DC	—		—		183,541		5,047			—		188,588		—		—		188,588		39,956		2011	2008	(1)
Mountain View Research Park	Office	Mountain View, CA	—		95,066		68,373		6,491			95,066		74,864		—		—		169,930		12,849		1977-1981/2007-2013	2013	(1)
Reservoir Place	Office	Waltham, MA	—		18,605		92,619		49,088			19,099		126,656		—		14,557		160,312		60,518		1955/1987	1997/1998	(1)
1330 Connecticut Avenue	Office	Washington, DC	—		25,982		82,311		27,663			25,982		109,974		—		—		135,956		33,179		1984	2004	(1)
Kingstowne Towne Center	Office	Alexandria, VA	—		18,021		109,038		919			18,021		109,957		—		—		127,978		36,524		2003-2006	2007	(1)
1333 New Hampshire Avenue	Office	Washington, DC	—		34,032		85,660		5,753			34,032		91,413		—		—		125,445		36,878		1996	2003	(1)
Weston Corporate Center	Office	Weston, MA	—		25,753		92,312		(123		)	25,854		92,088		—		—		117,942		20,074		2010	2001	(1)
One Freedom Square	Office	Reston, VA	—		9,929		84,504		23,009			9,883		107,559		—		—		117,442		44,381		2000	2003	(1)
Capital Gallery	Office	Washington, DC	—		4,725		29,565		78,897			6,128		107,059		—		—		113,187		59,469		1981/2006	2007	(1)
Two Freedom Square	Office	Reston, VA	—		13,930		77,739		16,544			13,866		94,347		—		—		108,213		43,283		2001	2003	(1)
One and Two Reston Overlook	Office	Reston, VA	—		16,456		66,192		20,216			15,074		87,790		—		—		102,864		39,598		1999	2000	(1)

Boston Properties Limited Partnership Schedule 3—Real Estate and Accumulated Depreciation December 31, 2016 (dollars in thousands)
				Original		Costs Capitalized Subsequent to Acquisition		Land and Improvements	Building and Improvements	Land Held for Development	Development and Construction in Progress	Total	Accumulated Depreciation	Year(s) Built/ Renovated	Year(s) Acquired	Depreciable Lives (Years)
Property Name	Type	Location	Encumbrances	Land	Building
Discovery Square	Office	Reston, VA	—	11,198	71,782	17,097		11,146	88,931	—	—	100,077	38,454	2001	2003	(1)
355 Main Street	Office	Cambridge, MA	—	18,863	53,346	27,360		21,098	78,471	—	—	99,569	25,286	1981/1996/2013	2006	(1)
140 Kendrick Street	Office	Needham, MA	—	18,095	66,905	11,476		18,095	78,381	—	—	96,476	25,315	2000	2004	(1)
90 Broadway	Office	Cambridge, MA	—	19,104	52,078	16,869		20,741	67,310	—	—	88,051	17,056	1983/1998/2013	2006	(1)
10 CityPoint	Office	Waltham, MA	—	1,953	85,752	—		1,953	85,752	—	—	87,705	1,601	2016	1997	(1)
230 CityPoint	Office	Waltham, MA	—	13,189	49,823	18,570		13,189	68,393	—	—	81,582	23,106	1992	2005	(1)
77 CityPoint	Office	Waltham, MA	—	13,847	60,383	5,598		13,847	65,981	—	—	79,828	20,963	2008	2001	(1)
Waltham Weston Corporate Center	Office	Waltham, MA	—	10,385	60,694	7,902		10,350	68,631	—	—	78,981	26,690	2003	1999	(1)
3625-3635 Peterson Way	Office	Santa Clara, CA	—	63,206	14,879	31		63,206	14,879	31	—	78,116	2,093	1979	2016	(1)
North First Business Park	Office	San Jose, CA	—	58,402	13,069	3,909		23,371	16,099	35,910	—	75,380	15,811	1981	2007	(1)
2440 West El Camino Real	Office	Mountain View, CA	—	16,741	51,285	1,814		16,741	53,099	—	—	69,840	9,817	1987/2003	2011	(1)
300 Binney Street	Office	Cambridge, MA	—	18,080	51,262	140		18,080	51,402	—	—	69,482	6,059	2013	2009	(1)
Reston Corporate Center	Office	Reston, VA	—	9,135	50,857	3,645		9,496	54,141	—	—	63,637	24,703	1984	1998	(1)
Wisconsin Place	Office	Chevy Chase, MD	—	—	53,349	9,884		—	63,233	—	—	63,233	16,406	2009	2004	(1)
New Dominion Technology Park, Bldg. Two	Office	Herndon, VA	—	5,584	51,868	349		5,574	52,227	—	—	57,801	21,128	2004	1998	(1)
200 West Street	Office	Waltham, MA	—	16,148	24,983	7,441		16,148	32,424	—	—	48,572	18,983	1999	1997	(1)
New Dominion Technology Park, Bldg. One	Office	Herndon, VA	35,485	3,880	43,227	1,073		3,880	44,300	—	—	48,180	23,779	2001	1998	(1)
Sumner Square	Office	Washington, DC	—	624	28,745	17,348		958	45,759	—	—	46,717	21,809	1985	1999	(1)
University Place	Office	Cambridge, MA	9,119	—	37,091	8,051		27	45,115	—	—	45,142	24,910	1985	1998	(1)
2600 Tower Oaks Boulevard	Office	Rockville, MD	—	4,243	31,125	6,918		4,244	38,042	—	—	42,286	19,351	2001	1998	(1)
255 Main Street	Office	Cambridge, MA	—	134	25,110	15,431		134	40,541	—	—	40,675	27,158	1987	1997	(1)
Quorum Office Park	Office	Chelmsford, MA	—	3,750	32,454	4,115		4,762	35,557	—	—	40,319	15,282	2001	2000	(1)
150 Broadway	Office	Cambridge, MA	—	850	25,042	6,618		822	31,688	—	—	32,510	15,127	1999	1997	(1)
500 E Street	Office	Washington, DC	—	109	22,420	9,979		1,569	30,939	—	—	32,508	22,318	1987	1997	(1)
325 Main Street	Office	Cambridge, MA	—	174	12,200	11,485		772	23,087	—	—	23,859	12,104	1987/2013	1997	(1)
105 Broadway	Office	Cambridge, MA	—	1,299	12,943	5,092		1,868	17,466	—	—	19,334	12,580	1990	1997	(1)
Lexington Office Park	Office	Lexington, MA	—	998	1,426	16,717		1,073	18,068	—	—	19,141	12,335	1982	1997	(1)
40 Shattuck Road	Office	Andover, MA	—	709	14,740	2,632		709	17,372	—	—	18,081	7,352	2001	1997	(1)
201 Spring Street	Office	Lexington, MA	—	2,849	15,303	(1,085	)	2,849	14,218	—	—	17,067	7,233	1997	1997	(1)
The Point	Office	Waltham, MA	—	6,395	10,040	408		6,480	10,363	—	—	16,843	397	2015	2007	(1)
690 Folsom Street	Office	San Francisco, CA	—	3,219	11,038	1,157		3,219	12,195	—	—	15,414	801	2015	2012	(1)
91 Hartwell Avenue	Office	Lexington, MA	—	784	6,464	7,627		784	14,091	—	—	14,875	8,930	1985	1997	(1)
92-100 Hayden Avenue	Office	Lexington, MA	—	594	6,748	7,452		619	14,175	—	—	14,794	11,910	1985	1997	(1)
181 Spring Street	Office	Lexington, MA	—	1,066	9,520	1,818		1,066	11,338	—	—	12,404	4,798	1999	1997	(1)
145 Broadway	Office	Cambridge, MA	—	121	5,535	6,360		121	10,027	—	1,868	12,016	8,385	1984	1997	(1)

Boston Properties Limited Partnership Schedule 3—Real Estate and Accumulated Depreciation December 31, 2016 (dollars in thousands)
				Original		Costs Capitalized Subsequent to Acquisition	Land and Improvements	Building and Improvements	Land Held for Development	Development and Construction in Progress	Total	Accumulated Depreciation	Year(s) Built/ Renovated	Year(s) Acquired	Depreciable Lives (Years)
Property Name	Type	Location	Encumbrances	Land	Building
33 Hayden Avenue	Office	Lexington, MA	—	266	3,234	8,150	266	11,384	—	—	11,650	7,480	1979	1997	(1)
195 West Street	Office	Waltham, MA	—	1,611	6,652	3,351	1,611	10,003	—	—	11,614	7,309	1990	1997	(1)
7501 Boston Boulevard, Building Seven	Office	Springfield, VA	—	665	9,273	30	665	9,303	—	—	9,968	4,490	1997	1997	(1)
7435 Boston Boulevard, Building One	Office	Springfield, VA	—	392	3,822	4,423	486	8,151	—	—	8,637	6,213	1982	1997	(1)
250 Binney Street	Office	Cambridge, MA	—	110	4,483	2,939	110	7,422	—	—	7,532	4,552	1983	1997	(1)
7450 Boston Boulevard, Building Three	Office	Springfield, VA	—	1,165	4,681	1,393	1,327	5,912	—	—	7,239	3,232	1987	1998	(1)
453 Ravendale Drive	Office	Mountain View, CA	—	5,477	1,090	408	5,477	1,498	—	—	6,975	338	1977	2012	(1)
8000 Grainger Court, Building Five	Office	Springfield, VA	—	366	4,282	2,013	453	6,208	—	—	6,661	5,294	1984	1997	(1)
17 Hartwell Avenue	Office	Lexington, MA	—	26	150	5,952	26	6,102	—	—	6,128	519	1968	1997	(1)
7300 Boston Boulevard, Building Thirteen	Office	Springfield, VA	—	608	4,773	497	608	5,270	—	—	5,878	4,968	2002	1997	(1)
7500 Boston Boulevard, Building Six	Office	Springfield, VA	—	138	3,749	1,954	273	5,568	—	—	5,841	4,428	1985	1997	(1)
7601 Boston Boulevard, Building Eight	Office	Springfield, VA	—	200	878	4,354	378	5,054	—	—	5,432	3,900	1986	1997	(1)
8000 Corporate Court, Building Eleven	Office	Springfield, VA	—	136	3,071	1,264	687	3,784	—	—	4,471	2,708	1989	1997	(1)
7375 Boston Boulevard, Building Ten	Office	Springfield, VA	—	23	2,685	731	47	3,392	—	—	3,439	2,437	1988	1997	(1)
7374 Boston Boulevard, Building Four	Office	Springfield, VA	—	241	1,605	1,355	303	2,898	—	—	3,201	2,375	1984	1997	(1)
7451 Boston Boulevard, Building Two	Office	Springfield, VA	—	249	1,542	1,346	535	2,602	—	—	3,137	2,264	1982	1997	(1)
32 Hartwell Avenue	Office	Lexington, MA	—	168	1,943	426	168	2,369	—	—	2,537	1,782	1968/1979/1987	1997	(1)
164 Lexington Road	Office	Billerica, MA	—	592	1,370	117	592	1,487	—	—	2,079	782	1982	1997	(1)
The Avant at Reston Town Center	Residential	Reston, VA	—	20,350	91,995	815	20,350	92,810	—	—	113,160	7,306	2014	2010	(1)
The Lofts at Atlantic Wharf	Residential	Boston, MA	—	3,529	54,891	1,663	3,529	56,554	—	—	60,083	8,105	2011	2007	(1)
Boston Marriott Cambridge	Hotel	Cambridge, MA	—	478	37,918	34,176	478	72,094	—	—	72,572	50,357	1986	1997	(1)
Kendall Center Green Garage	Garage	Cambridge, MA	—	—	35,035	6,977	—	42,012	—	—	42,012	9,250	1984	2006	(1)
Kendall Center Yellow Garage	Garage	Cambridge, MA	—	1,256	15,697	859	1,256	16,556	—	—	17,812	4,580	2006	2004	(1)
Kendall Center Blue Garage	Garage	Cambridge, MA	—	1,163	11,633	1,105	1,163	12,738	—	—	13,901	8,982	1990	1997	(1)
Salesforce Tower	Development	San Francisco, CA	—	—	—	723,866	—	—	—	723,866	723,866	—	N/A	2013	N/A
Signature at Reston (formerly Reston Signature Site)	Development	Reston, VA	—	—	—	96,444	—	—	—	96,444	96,444	—	N/A	2013	N/A
191 Spring Street	Development	Lexington, MA	—	2,850	27,166	1,935	2,850	27,678	—	1,423	31,951	21,001	1971/1995	1997	(1)

Boston Properties Limited Partnership Schedule 3—Real Estate and Accumulated Depreciation December 31, 2016 (dollars in thousands)
							Original				Costs Capitalized Subsequent to Acquisition		Land and Improvements		Building and Improvements		Land Held for Development				Development and Construction in Progress		Total		Accumulated Depreciation		Year(s) Built/ Renovated	Year(s) Acquired	Depreciable Lives (Years)
Property Name	Type	Location	Encumbrances				Land		Building
Proto at Cambridge (formerly Cambridge Residential / 88 Ames)	Development	Cambridge, MA	—				—		—		24,334		—		—		—				24,334		24,334		—		N/A	2015	N/A
Springfield Metro Center	Land	Springfield, VA	—				—		—		35,430		—		—		35,430				—		35,430		—		N/A	2007	N/A
Tower Oaks Master Plan	Land	Rockville, MD	—				—		—		29,209		—		—		29,209				—		29,209		—		N/A	1998	N/A
Plaza at Almaden	Land	San Jose, CA	—				—		—		29,081		—		—		29,081				—		29,081		—		N/A	2006	N/A
6601 & 6605 Springfield Center Drive	Land	Springfield, VA	—				—		—		13,866		—		—		13,866				—		13,866		—		N/A	2007	N/A
214 Third Avenue	Land	Waltham, MA	—				—		—		13,795		—		146		13,649				—		13,795		—		N/A	2006	N/A
103 Fourth Avenue	Land	Waltham, MA	—				—		—		12,052		—		49		12,003				—		12,052		—		N/A	2007	N/A
20 CityPoint	Land	Waltham, MA	—				—		—		11,666		—		—		11,666				—		11,666		—		N/A	2007	N/A
Reston Gateway	Land	Reston, VA	—				—		—		10,841		—		—		10,841				—		10,841		—		N/A	1998	N/A
Reston Eastgate	Land	Reston, VA	—				—		—		9,906		—		—		9,906				—		9,906		—		N/A	2001	N/A
Crane Meadow	Land	Marlborough, MA	—				—		—		8,754		—		—		8,754				—		8,754		—		N/A	2000	N/A
Washingtonian North	Land	Gaithersburg, MD	—				—		—		7,697		—		—		7,697				—		7,697		—		N/A	1998	N/A
Kendall Center Master Plan	Land	Cambridge, MA	—				—		—		4,062		—		—		4,062				—		4,062		—		N/A	N/A	N/A
Fourth and Harrison	Land	San Francisco, CA	—				—		—		3,936		—		—		3,936				—		3,936		—		N/A	N/A	N/A
North First Master Plan	Land	San Jose, CA	—				—		—		3,014		—		—		3,014				—		3,014		—		N/A	2007	N/A
Broad Run Business Park	Land	Loudoun County, VA	—				—		—		2,694		—		—		2,694				—		2,694		—		N/A	1998	N/A
MacArthur Station	Land	Oakland, CA	—				—		—		1,316		—		—		1,316				—		1,316		—		N/A	N/A	N/A
30 Shattuck Road	Land	Andover, MA	—				—		—		1,214		—		—		1,214				—		1,214		—		N/A	1997	N/A
2100 Pennsylvania Avenue	Land	Washington, DC	—				—		—		286		—		—		286				—		286		—		N/A	N/A	N/A
			$	2,063,087	(2	)	$	4,759,821	$	11,416,957	$	3,524,407	$	4,774,460	$	13,642,110	$	246,656	(3	)	$	1,037,959	$	19,701,185	$	4,116,020

Note: Total Real Estate does not include Furniture, Fixtures and Equipment totaling approximately $32,687. Accumulated Depreciation does not include approximately $20,344 of accumulated depreciation related to Furniture, Fixtures and Equipment.

The aggregate cost and accumulated depreciation for tax purposes was approximately $17.6 billion and $3.6 billion, respectively.

(1) Depreciation of the buildings and improvements are calculated over lives ranging from the life of the lease to 40 years.

(2) Includes the unamortized balance of the historical fair value adjustment and unamortized deferred financing costs totaling approximately $33.8 million and $(2.4) million, respectively.

(3) Includes pre-development costs.

Activity of Real Estate and Accumulated Depreciation [Table Text Block]

A summary of activity for real estate and accumulated depreciation is as follows:

	2016			2015			2014
Real Estate:
Balance at the beginning of the year	$	19,031,289		$	18,786,572		$	18,523,277
Additions to/improvements of real estate	977,287			700,792			594,296
Assets sold/written-off	(307,391		)	(456,075		)	(331,001		)
Balance at the end of the year	$	19,701,185		$	19,031,289		$	18,786,572
Accumulated Depreciation:
Balance at the beginning of the year	$	3,826,862		$	3,458,640		$	3,081,040
Depreciation expense	548,397			478,457			447,667
Assets sold/written-off	(259,239		)	(110,235		)	(70,067		)
Balance at the end of the year	$	4,116,020		$	3,826,862		$	3,458,640

Note: Real Estate and Accumulated Depreciation amounts do not include Furniture, Fixtures and Equipment.