Item 15. Exhibits and Financial Statement Schedules.

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Item 15. Exhibits and Financial Statement Schedules.

(a) Financial Statement Schedule


Boston Properties, Inc. Schedule 3—Real Estate and Accumulated Depreciation December 31, 2020 (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	$	2,277,522	$	1,796,252	$	1,532,654	$	227,450	$	1,796,252	$	1,760,104	$	—	$	—	$	3,556,356	$	364,145	1968/2019	2013	(1)
Prudential Center	Office	Boston, MA	—		92,077		948,357		573,187		115,638		1,480,302		17,681		—		1,613,621		634,402		1965/1993/2002/2016-2017	1998/1999/2000	(1)
Embarcadero Center	Office	San Francisco, CA	—		179,697		847,410		469,860		195,987		1,300,980		—		—		1,496,967		680,507		1970/1989	1998-1999	(1)
399 Park Avenue	Office	New York, NY	—		339,200		700,358		340,960		354,107		1,026,411		—		—		1,380,518		387,217		1961/2018	2002	(1)
601 Lexington Avenue	Office	New York, NY	630,068		241,600		494,782		446,950		289,639		663,694		—		229,999		1,183,332		284,477		1977/1997	2001	(1)
Salesforce Tower	Office	San Francisco, CA	—		200,349		946,205		5,355		200,349		951,560		—		—		1,151,909		68,918		2018	2013	(1)
200 Clarendon Street and Garage	Office	Boston, MA	—		219,543		667,884		218,821		251,374		854,874		—		—		1,106,248		244,882		1976	2010	(1)
250 West 55th Street	Office	New York, NY	—		285,263		603,167		51,860		285,263		655,027		—		—		940,290		138,004		2014	2007	(1)
100 Federal Street	Office	Boston, MA	—		131,067		435,954		111,196		131,067		547,150		—		—		678,217		141,629		1971-1975/2017	2012	(1)
Times Square Tower	Office	New York, NY	—		165,413		380,438		108,206		169,193		484,864		—		—		654,057		217,845		2004	2000	(1)
Carnegie Center	Office	Princeton, NJ	—		142,666		316,856		153,797		94,240		463,959		55,120		—		613,319		221,323		1983-2016	1998/1999/2000/2007/2014/2017/2019	(1)
Atlantic Wharf	Office	Boston, MA	—		63,988		454,537		18,538		63,988		473,075		—		—		537,063		146,860		2011	2007	(1)
599 Lexington Avenue	Office	New York, NY	—		81,040		100,507		214,275		87,852		307,970		—		—		395,822		193,058		1986	1997	(1)
510 Madison Avenue	Office	New York, NY	—		103,000		253,665		28,446		103,000		282,111		—		—		385,111		81,517		2012	2010	(1)
Fountain Square	Office	Reston, VA	—		56,853		306,298		21,030		56,853		327,328		—		—		384,181		90,047		1986-1990	2012	(1)
680 Folsom Street	Office	San Francisco, CA	—		72,545		219,766		7,917		72,545		227,683		—		—		300,228		55,319		2014	2012	(1)
145 Broadway	Office	Cambridge, MA	—		121		273,013		25,712		23,367		275,479		—		—		298,846		9,941		2019	1997	(1)
2200 Pennsylvania Avenue	Office	Washington, DC	—		—		183,541		112,436		107,356		188,621		—		—		295,977		66,072		2011	2008	(1)
South of Market and Democracy Tower	Office	Reston, VA	—		13,603		237,479		41,163		13,687		278,558		—		—		292,245		107,358		2008-2009	2003	(1)
601 Massachusetts Avenue	Office	Washington, DC	—		95,310		165,173		3,945		95,322		169,106		—		—		264,428		30,743		2016	2008	(1)
Bay Colony Corporate Center	Office	Waltham, MA	—		18,789		148,451		81,302		18,789		229,753		—		—		248,542		89,232		1985-1989	2011	(1)
535 Mission Street	Office	San Francisco, CA	—		40,933		148,378		3,287		40,933		151,665		—		—		192,598		31,953		2015	2013	(1)
Mountain View Research Park	Office	Mountain View, CA	—		95,066		68,373		18,479		95,066		86,852		—		—		181,918		21,725		1977-1981/2007-2013	2013	(1)
Reservoir Place	Office	Waltham, MA	—		18,605		104,124		57,154		20,108		159,775		—		—		179,883		76,993		1955/1987/2017	1997/1998	(1)
1330 Connecticut Avenue	Office	Washington, DC	—		25,982		82,311		37,049		27,135		118,207		—		—		145,342		38,000		1984/2018	2004	(1)
One Freedom Square	Office	Reston, VA	—		9,929		84,504		39,884		11,293		123,024		—		—		134,317		62,808		2000	2003	(1)
Kingstowne Towne Center	Office	Alexandria, VA	—		18,021		109,038		3,299		18,062		112,296		—		—		130,358		46,469		2003-2006	2007	(1)


Boston Properties, Inc. Schedule 3—Real Estate and Accumulated Depreciation December 31, 2020 (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 and Two Reston Overlook	Office	Reston, VA	—	16,456	66,192	46,762	16,179	113,231	—	—	129,410	57,441	1999	2000	(1)
Weston Corporate Center	Office	Weston, MA	—	25,753	92,312	(5)	25,854	92,206	—	—	118,060	32,278	2010	2001	(1)
Two Freedom Square	Office	Reston, VA	—	13,930	77,739	25,510	15,420	101,759	—	—	117,179	53,885	2001	2003	(1)
17Fifty Presidents Street	Office	Reston, VA	—	—	113,362	—	—	113,362	—	—	113,362	3,466	2020	2013	(1)
140 Kendrick Street	Office	Needham, MA	—	18,095	66,905	26,458	19,092	92,366	—	—	111,458	35,918	2000	2004	(1)
Discovery Square	Office	Reston, VA	—	11,198	71,782	20,742	12,533	91,189	—	—	103,722	45,920	2001	2003	(1)
355 Main Street	Office	Cambridge, MA	—	18,863	53,346	27,593	21,173	78,629	—	—	99,802	29,479	1981/1996/2013	2006	(1)
880 & 890 Winter Street	Office	Waltham, MA	—	29,510	65,812	1,367	29,510	66,561	618	—	96,689	5,706	1998-1999	2019	(1)
10 CityPoint	Office	Waltham, MA	—	1,953	85,752	4,744	2,290	90,159	—	—	92,449	14,073	2016	1997	(1)
90 Broadway	Office	Cambridge, MA	—	19,104	52,078	18,077	20,785	68,474	—	—	89,259	24,200	1983/1998/2013	2006	(1)
230 CityPoint	Office	Waltham, MA	—	13,189	49,823	23,958	13,807	73,163	—	—	86,970	32,678	1992	2005	(1)
77 CityPoint	Office	Waltham, MA	—	13,847	60,383	11,937	14,023	72,144	—	—	86,167	29,691	2008	2001	(1)
Waltham Weston Corporate Center	Office	Waltham, MA	—	10,385	60,694	13,151	11,097	73,133	—	—	84,230	38,118	2003	1999	(1)
3625-3635 Peterson Way	Office	Santa Clara, CA	—	63,206	14,879	907	63,206	14,879	907	—	78,992	14,198	1979	2016	(1)
20 CityPoint	Office	Waltham, MA	—	4,887	72,764	—	4,887	72,764	—	—	77,651	3,325	2020	2007	(1)
2440 West El Camino Real	Office	Mountain View, CA	—	16,741	51,285	5,518	16,741	56,803	—	—	73,544	15,215	1987/2003	2011	(1)
191 Spring Street	Office	Lexington, MA	—	2,850	59,751	7,543	3,151	66,993	—	—	70,144	24,275	1971/1995/2018	1997	(1)
300 Binney Street	Office	Cambridge, MA	—	18,080	51,262	140	18,080	51,402	—	—	69,482	12,842	2013	2009	(1)
Wisconsin Place	Office	Chevy Chase, MD	—	—	53,349	14,771	—	68,120	—	—	68,120	28,305	2009	2004	(1)
Reston Corporate Center	Office	Reston, VA	—	9,135	50,857	6,236	10,148	56,080	—	—	66,228	31,405	1984	1998	(1)
200 West Street	Office	Waltham, MA	—	16,148	24,983	21,102	16,813	30,496	317	14,607	62,233	18,585	1999	1997	(1)
255 Main Street	Office	Cambridge, MA	—	134	25,110	34,107	548	58,803	—	—	59,351	37,353	1987	1997	(1)
University Place	Office	Cambridge, MA	1,491	—	37,091	16,745	6,909	46,927	—	—	53,836	30,983	1985	1998	(1)
Sumner Square	Office	Washington, DC	—	624	28,745	20,396	2,251	47,514	—	—	49,765	28,329	1985	1999	(1)
Capital Gallery	Office	Washington, DC	—	4,725	29,565	8,679	8,662	34,307	—	—	42,969	21,150	1981/2006	2007	(1)
North First Business Park	Office	San Jose, CA	—	23,398	13,069	4,580	23,377	17,670	—	—	41,047	16,749	1981	2007	(1)
150 Broadway	Office	Cambridge, MA	—	850	25,042	2,253	1,323	26,822	—	—	28,145	14,154	1999	1997	(1)
105 Broadway	Office	Cambridge, MA	—	1,299	12,943	12,723	2,395	24,570	—	—	26,965	13,041	1990	1997	(1)
Lexington Office Park	Office	Lexington, MA	—	998	1,426	18,567	1,264	19,727	—	—	20,991	15,289	1982	1997	(1)
201 Spring Street	Office	Lexington, MA	—	2,849	15,303	1,124	3,124	16,152	—	—	19,276	8,985	1997	1997	(1)
The Point	Office	Waltham, MA	—	6,395	10,040	421	6,492	10,364	—	—	16,856	1,667	2015	2007	(1)
690 Folsom Street	Office	San Francisco, CA	—	3,219	11,038	1,157	3,219	12,195	—	—	15,414	2,778	2015	2012	(1)
33 Hayden Avenue	Office	Lexington, MA	—	266	3,234	11,566	425	14,641	—	—	15,066	5,674	1979	1997	(1)
92-100 Hayden Avenue	Office	Lexington, MA	—	594	6,748	7,669	802	14,209	—	—	15,011	12,507	1985	1997	(1)
181 Spring Street	Office	Lexington, MA	—	1,066	9,520	2,177	1,160	11,603	—	—	12,763	5,908	1999	1997	(1)
195 West Street	Office	Waltham, MA	—	1,611	6,652	4,221	1,858	10,626	—	—	12,484	8,589	1990	1997	(1)


Boston Properties, Inc. Schedule 3—Real Estate and Accumulated Depreciation December 31, 2020 (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
7501 Boston Boulevard, Building Seven	Office	Springfield, VA	—	665	9,273	819	791	9,966	—	—	10,757	5,665	1997	1997	(1)
7435 Boston Boulevard, Building One	Office	Springfield, VA	—	392	3,822	5,016	659	8,571	—	—	9,230	6,756	1982	1997	(1)
32 Hartwell Avenue	Office	Lexington, MA	—	168	1,943	6,944	314	8,741	—	—	9,055	2,365	1968/1979/1987	1997	(1)
7450 Boston Boulevard, Building Three	Office	Springfield, VA	—	1,165	4,681	2,591	1,430	7,007	—	—	8,437	4,103	1987	1998	(1)
250 Binney Street	Office	Cambridge, MA	—	110	4,483	3,593	273	7,913	—	—	8,186	6,211	1983	1997	(1)
8000 Grainger Court, Building Five	Office	Springfield, VA	—	366	4,282	3,198	601	7,245	—	—	7,846	5,923	1984	1997	(1)
453 Ravendale Drive	Office	Mountain View, CA	—	5,477	1,090	676	5,477	1,766	—	—	7,243	819	1977	2012	(1)
7300 Boston Boulevard, Building Thirteen	Office	Springfield, VA	—	608	4,773	1,075	661	5,795	—	—	6,456	2,269	2002	1997	(1)
17 Hartwell Avenue	Office	Lexington, MA	—	26	150	6,064	65	6,175	—	—	6,240	2,487	1968	1997	(1)
7601 Boston Boulevard, Building Eight	Office	Springfield, VA	—	200	878	5,035	551	5,562	—	—	6,113	4,838	1986	1997	(1)
7500 Boston Boulevard, Building Six	Office	Springfield, VA	—	138	3,749	1,640	367	5,160	—	—	5,527	4,399	1985	1997	(1)
8000 Corporate Court, Building Eleven	Office	Springfield, VA	—	136	3,071	1,649	774	4,082	—	—	4,856	3,320	1989	1997	(1)
7375 Boston Boulevard, Building Ten	Office	Springfield, VA	—	23	2,685	1,035	93	3,650	—	—	3,743	2,724	1988	1997	(1)
7374 Boston Boulevard, Building Four	Office	Springfield, VA	—	241	1,605	1,821	398	3,269	—	—	3,667	2,870	1984	1997	(1)
7451 Boston Boulevard, Building Two	Office	Springfield, VA	—	249	1,542	1,658	613	2,836	—	—	3,449	2,699	1982	1997	(1)
The Skylyne	Residential	Oakland, CA	—	28,962	239,077	—	28,962	239,077	—	—	268,039	2,128	2020	N/A	(1)
Signature at Reston	Residential	Reston, VA	—	27,076	190,580	659	27,076	191,239	—	—	218,315	13,650	2018	2013	(1)
Proto Kendall Square	Residential	Cambridge, MA	—	9,243	127,248	3,336	9,245	130,582	—	—	139,827	7,883	2018	2015	(1)
The Avant at Reston Town Center	Residential	Reston, VA	—	20,350	91,995	846	20,350	92,841	—	—	113,191	17,204	2014	2010	(1)
The Lofts at Atlantic Wharf	Residential	Boston, MA	—	3,529	54,891	2,129	3,529	57,020	—	—	60,549	14,166	2011	2007	(1)
Boston Marriott Cambridge	Hotel	Cambridge, MA	—	478	37,918	35,486	1,201	72,681	—	—	73,882	49,103	1986/2017	1997	(1)
Kendall Center Green Garage	Garage	Cambridge, MA	—	—	35,035	6,846	103	41,778	—	—	41,881	14,442	1984	2006	(1)
Kendall Center Yellow Garage	Garage	Cambridge, MA	—	1,256	15,697	1,552	1,434	17,071	—	—	18,505	6,485	2006	2004	(1)
Kendall Center Blue Garage	Garage	Cambridge, MA	—	1,163	11,633	2,111	1,579	13,328	—	—	14,907	10,044	1990	1997	(1)
Reston Next (formerly Reston Gateway)	Development	Reston, VA	—	—	—	354,174	—	—	—	354,174	354,174	—	N/A	1998	N/A
2100 Pennsylvania Avenue	Development	Washington, DC	—	—	—	294,445	185,129	—	—	109,316	294,445	3,481	N/A	N/A	N/A
325 Main Street	Development	Cambridge, MA	—	174	—	161,468	965	—	—	160,677	161,642	—	N/A	1997	N/A
777 Harrison Street (formerly 425 Fourth Street)	Land	San Francisco, CA	—	144,647	—	25,930	—	47	170,530	—	170,577	—	N/A	2020	N/A
North First Master Plan	Land	San Jose, CA	—	35,004	—	3,937	—	—	38,941	—	38,941	—	N/A	2007	N/A


Boston Properties, Inc. Schedule 3—Real Estate and Accumulated Depreciation December 31, 2020 (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
Plaza at Almaden	Land	San Jose, CA	—			—		—		36,431		—			—			36,431			—		36,431		—		N/A	2006	N/A
Back Bay Station Master Plan	Land	Boston, MA	—			—		—		30,643		—			—			30,643			—		30,643		—		N/A	N/A	N/A
Reston Gateway Master Plan	Land	Reston, VA	—			—		—		28,610		—			—			28,610			—		28,610		—		N/A	1998	N/A
Springfield Metro Center	Land	Springfield, VA	—			—		—		19,871		—			—			19,871			—		19,871		—		N/A	2007	N/A
214 Third Avenue	Land	Waltham, MA	—			—		—		19,206		—			—			19,206			—		19,206		—		N/A	2006	N/A
CityPoint South Master Plan	Land	Waltham, MA	—			—		—		13,363		—			—			13,363			—		13,363		—		N/A	N/A	N/A
103 Fourth Avenue	Land	Waltham, MA	—			—		—		12,888		—			—			12,888			—		12,888		—		N/A	2007	N/A
Broad Run Business Park	Land	Loudoun County, VA	—			—		—		2,392		—			—			2,392			—		2,392		—		N/A	1998	N/A
Kendall Center Master Plan	Land	Cambridge, MA	—			—		—		2,145		—			—			2,145			—		2,145		—		N/A	1997	N/A
Weston Quarry	Land	Weston, MA	—			—		—		1,249		—			—			1,249			—		1,249		—		N/A	2001	N/A
Reston Overlook Master Plan	Land	Reston, VA	—			—		—		42		—			—			42			—		42		—		N/A	2000	N/A

			$	2,909,081	(2)	$	5,160,116	$	13,196,160	$	4,947,027	$	5,429,703	(3)	$	16,553,873	(4)	$	450,954	(5)	$	868,773	$	23,303,303	$	5,501,637

Note: Total Real Estate does not include Furniture, Fixtures and Equipment totaling approximately $49,606. Accumulated Depreciation does not include approximately $32,465 of accumulated depreciation related to Furniture, Fixtures and Equipment.

The aggregate cost and accumulated depreciation for tax purposes was approximately $20.7 billion and $4.5 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 unamortized deferred financing costs totaling approximately $(22.9) million.

(3)Includes Right of Use Assets - Finance Leases and Right of Use Assets - Operating Leases of approximately $214,091 and $146,406, respectively.

(4)Includes Right of Use Assets - Finance Leases of approximately $23,302.

(5)Includes pre-development costs.

Boston Properties, Inc.

Real Estate and Accumulated Depreciation

December 31, 2020, 2019 and 2018

(dollars in thousands)

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


	2020		2019		2018
Real Estate:
Balance at the beginning of the year	$	22,844,697	$	21,605,545	$	21,058,714
Additions to/improvements of real estate	996,989		1,671,898		1,043,379
Assets sold/written-off	(538,383)		(432,746)		(496,548)
Balance at the end of the year	$	23,303,303	$	22,844,697	$	21,605,545
Accumulated Depreciation:
Balance at the beginning of the year	$	5,239,179	$	4,871,102	$	4,566,570
Depreciation expense	573,898		564,938		533,342
Assets sold/written-off	(311,440)		(196,861)		(228,810)
Balance at the end of the year	$	5,501,637	$	5,239,179	$	4,871,102

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


Boston Properties Limited Partnership Schedule 3—Real Estate and Accumulated Depreciation December 31, 2020 (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	$	2,277,522	$	1,796,252	$	1,532,654	$	227,450	$	1,796,252	$	1,760,104	$	—	$	—	$	3,556,356	$	364,145	1968/2019	2013	(1)
Prudential Center	Office	Boston, MA	—		92,077		948,357		512,816		100,540		1,435,029		17,681		—		1,553,250		617,331		1965/1993/2002/2016-2017	1998/1999/2000	(1)
Embarcadero Center	Office	San Francisco, CA	—		179,697		847,410		407,480		180,420		1,254,167		—		—		1,434,587		662,756		1970/1989	1998-1999	(1)
399 Park Avenue	Office	New York, NY	—		339,200		700,358		281,352		339,200		981,710		—		—		1,320,910		370,361		1961/2018	2002	(1)
Salesforce Tower	Office	San Francisco, CA	—		200,349		946,205		5,355		200,349		951,560		—		—		1,151,909		68,918		2018	2013	(1)
601 Lexington Avenue	Office	New York, NY	630,068		241,600		494,782		409,864		279,281		636,966		—		229,999		1,146,246		274,343		1977/1997	2001	(1)
200 Clarendon Street and Garage	Office	Boston, MA	—		219,543		667,884		218,821		251,374		854,874		—		—		1,106,248		244,882		1976	2010	(1)
250 West 55th Street	Office	New York, NY	—		285,263		603,167		51,860		285,263		655,027		—		—		940,290		138,004		2014	2007	(1)
100 Federal Street	Office	Boston, MA	—		131,067		435,954		111,196		131,067		547,150		—		—		678,217		141,629		1971-1975/2017	2012	(1)
Times Square Tower	Office	New York, NY	—		165,413		380,438		70,227		159,694		456,384		—		—		616,078		207,106		2004	2000	(1)
Carnegie Center	Office	Princeton, NJ	—		142,666		316,856		138,834		90,498		452,738		55,120		—		598,356		217,092		1983-2016	1998/1999/2000/2007/2014/2017/2019	(1)
Atlantic Wharf	Office	Boston, MA	—		63,988		454,537		18,538		63,988		473,075		—		—		537,063		146,860		2011	2007	(1)
510 Madison Avenue	Office	New York, NY	—		103,000		253,665		28,446		103,000		282,111		—		—		385,111		81,517		2012	2010	(1)
Fountain Square	Office	Reston, VA	—		56,853		306,298		21,030		56,853		327,328		—		—		384,181		90,047		1986-1990	2012	(1)
599 Lexington Avenue	Office	New York, NY	—		81,040		100,507		187,033		81,040		287,540		—		—		368,580		185,354		1986	1997	(1)
680 Folsom Street	Office	San Francisco, CA	—		72,545		219,766		7,917		72,545		227,683		—		—		300,228		55,319		2014	2012	(1)
145 Broadway	Office	Cambridge, MA	—		121		273,013		25,509		23,164		275,479		—		—		298,643		9,941		2019	1997	(1)
2200 Pennsylvania Avenue	Office	Washington, DC	—		—		183,541		112,436		107,356		188,621		—		—		295,977		66,072		2011	2008	(1)
South of Market and Democracy Tower	Office	Reston, VA	—		13,603		237,479		40,827		13,603		278,306		—		—		291,909		107,279		2008-2009	2003	(1)
601 Massachusetts Avenue	Office	Washington, DC	—		95,310		165,173		3,933		95,310		169,106		—		—		264,416		30,743		2016	2008	(1)
Bay Colony Corporate Center	Office	Waltham, MA	—		18,789		148,451		81,302		18,789		229,753		—		—		248,542		89,232		1985-1989	2011	(1)
535 Mission Street	Office	San Francisco, CA	—		40,933		148,378		3,287		40,933		151,665		—		—		192,598		31,953		2015	2013	(1)
Mountain View Research Park	Office	Mountain View, CA	—		95,066		68,373		18,479		95,066		86,852		—		—		181,918		21,725		1977-1981/2007-2013	2013	(1)
Reservoir Place	Office	Waltham, MA	—		18,605		104,124		53,079		19,089		156,719		—		—		175,808		75,841		1955/1987/2017	1997/1998	(1)
1330 Connecticut Avenue	Office	Washington, DC	—		25,982		82,311		32,436		25,982		114,747		—		—		140,729		36,695		1984/2018	2004	(1)
Kingstowne Towne Center	Office	Alexandria, VA	—		18,021		109,038		3,135		18,021		112,173		—		—		130,194		46,430		2003-2006	2007	(1)
One Freedom Square	Office	Reston, VA	—		9,929		84,504		34,247		9,883		118,797		—		—		128,680		61,215		2000	2003	(1)
One and Two Reston Overlook	Office	Reston, VA	—		16,456		66,192		42,344		15,074		109,918		—		—		124,992		56,191		1999	2000	(1)
Weston Corporate Center	Office	Weston, MA	—		25,753		92,312		(5)		25,854		92,206		—		—		118,060		32,278		2010	2001	(1)
17Fifty Presidents Street	Office	Reston, VA	—		—		113,362		—		—		113,362		—		—		113,362		3,466		2020	2013	(1)
Two Freedom Square	Office	Reston, VA	—		13,930		77,739		19,298		13,866		97,101		—		—		110,967		52,128		2001	2003	(1)
140 Kendrick Street	Office	Needham, MA	—		18,095		66,905		22,468		18,095		89,373		—		—		107,468		34,790		2000	2004	(1)


Boston Properties Limited Partnership Schedule 3—Real Estate and Accumulated Depreciation December 31, 2020 (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
355 Main Street	Office	Cambridge, MA	—	18,863	53,346	27,295	21,098	78,406	—	—	99,504	29,397	1981/1996/2013	2006	(1)
Discovery Square	Office	Reston, VA	—	11,198	71,782	15,197	11,146	87,031	—	—	98,177	44,352	2001	2003	(1)
880 & 890 Winter Street	Office	Waltham, MA	—	29,510	65,812	1,367	29,510	66,561	618	—	96,689	5,706	1998-1999	2019	(1)
10 CityPoint	Office	Waltham, MA	—	1,953	85,752	4,581	2,127	90,159	—	—	92,286	14,073	2016	1997	(1)
90 Broadway	Office	Cambridge, MA	—	19,104	52,078	17,898	20,741	68,339	—	—	89,080	24,156	1983/1998/2013	2006	(1)
77 CityPoint	Office	Waltham, MA	—	13,847	60,383	11,832	13,997	72,065	—	—	86,062	29,665	2008	2001	(1)
230 CityPoint	Office	Waltham, MA	—	13,189	49,823	22,341	13,403	71,950	—	—	85,353	32,224	1992	2005	(1)
Waltham Weston Corporate Center	Office	Waltham, MA	—	10,385	60,694	10,164	10,350	70,893	—	—	81,243	37,273	2003	1999	(1)
3625-3635 Peterson Way	Office	Santa Clara, CA	—	63,206	14,879	907	63,206	14,879	907	—	78,992	14,198	1979	2016	(1)
20 CityPoint	Office	Waltham, MA	—	4,887	72,764	—	4,887	72,764	—	—	77,651	3,325	2020	2007	(1)
2440 West El Camino Real	Office	Mountain View, CA	—	16,741	51,285	5,518	16,741	56,803	—	—	73,544	15,215	1987/2003	2011	(1)
191 Spring Street	Office	Lexington, MA	—	2,850	59,751	6,911	2,850	66,662	—	—	69,512	24,150	1971/1995/2018	1997	(1)
300 Binney Street	Office	Cambridge, MA	—	18,080	51,262	140	18,080	51,402	—	—	69,482	12,842	2013	2009	(1)
Wisconsin Place	Office	Chevy Chase, MD	—	—	53,349	14,771	—	68,120	—	—	68,120	28,305	2009	2004	(1)
Reston Corporate Center	Office	Reston, VA	—	9,135	50,857	3,625	9,496	54,121	—	—	63,617	30,666	1984	1998	(1)
200 West Street	Office	Waltham, MA	—	16,148	24,983	18,441	16,148	28,500	317	14,607	59,572	17,832	1999	1997	(1)
255 Main Street	Office	Cambridge, MA	—	134	25,110	32,451	134	57,561	—	—	57,695	36,887	1987	1997	(1)
University Place	Office	Cambridge, MA	1,491	—	37,091	15,295	6,546	45,840	—	—	52,386	30,577	1985	1998	(1)
Sumner Square	Office	Washington, DC	—	624	28,745	18,316	1,731	45,954	—	—	47,685	27,744	1985	1999	(1)
North First Business Park	Office	San Jose, CA	—	23,398	13,069	4,557	23,371	17,653	—	—	41,024	16,743	1981	2007	(1)
Capital Gallery	Office	Washington, DC	—	4,725	29,565	4,016	6,128	32,178	—	—	38,306	20,348	1981/2006	2007	(1)
150 Broadway	Office	Cambridge, MA	—	850	25,042	248	822	25,318	—	—	26,140	13,584	1999	1997	(1)
105 Broadway	Office	Cambridge, MA	—	1,299	12,943	10,617	1,868	22,991	—	—	24,859	12,445	1990	1997	(1)
Lexington Office Park	Office	Lexington, MA	—	998	1,426	17,803	1,073	19,154	—	—	20,227	15,076	1982	1997	(1)
201 Spring Street	Office	Lexington, MA	—	2,849	15,303	25	2,849	15,328	—	—	18,177	8,672	1997	1997	(1)
The Point	Office	Waltham, MA	—	6,395	10,040	421	6,492	10,364	—	—	16,856	1,667	2015	2007	(1)
690 Folsom Street	Office	San Francisco, CA	—	3,219	11,038	1,157	3,219	12,195	—	—	15,414	2,778	2015	2012	(1)
33 Hayden Avenue	Office	Lexington, MA	—	266	3,234	10,929	266	14,163	—	—	14,429	5,494	1979	1997	(1)
92-100 Hayden Avenue	Office	Lexington, MA	—	594	6,748	6,940	619	13,663	—	—	14,282	12,300	1985	1997	(1)
181 Spring Street	Office	Lexington, MA	—	1,066	9,520	1,800	1,066	11,320	—	—	12,386	5,802	1999	1997	(1)
195 West Street	Office	Waltham, MA	—	1,611	6,652	3,232	1,611	9,884	—	—	11,495	8,306	1990	1997	(1)
7501 Boston Boulevard, Building Seven	Office	Springfield, VA	—	665	9,273	314	665	9,587	—	—	10,252	5,520	1997	1997	(1)
7435 Boston Boulevard, Building One	Office	Springfield, VA	—	392	3,822	4,323	486	8,051	—	—	8,537	6,561	1982	1997	(1)
32 Hartwell Avenue	Office	Lexington, MA	—	168	1,943	6,358	168	8,301	—	—	8,469	2,199	1968/1979/1987	1997	(1)
7450 Boston Boulevard, Building Three	Office	Springfield, VA	—	1,165	4,681	2,177	1,327	6,696	—	—	8,023	3,983	1987	1998	(1)


Boston Properties Limited Partnership Schedule 3—Real Estate and Accumulated Depreciation December 31, 2020 (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
250 Binney Street	Office	Cambridge, MA	—	110	4,483	2,939	110	7,422	—	—	7,532	6,030	1983	1997	(1)
8000 Grainger Court, Building Five	Office	Springfield, VA	—	366	4,282	2,604	453	6,799	—	—	7,252	5,756	1984	1997	(1)
453 Ravendale Drive	Office	Mountain View, CA	—	5,477	1,090	676	5,477	1,766	—	—	7,243	819	1977	2012	(1)
7300 Boston Boulevard, Building Thirteen	Office	Springfield, VA	—	608	4,773	863	608	5,636	—	—	6,244	2,209	2002	1997	(1)
17 Hartwell Avenue	Office	Lexington, MA	—	26	150	5,907	26	6,057	—	—	6,083	2,442	1968	1997	(1)
7601 Boston Boulevard, Building Eight	Office	Springfield, VA	—	200	878	4,342	378	5,042	—	—	5,420	4,643	1986	1997	(1)
7500 Boston Boulevard, Building Six	Office	Springfield, VA	—	138	3,749	1,107	234	4,760	—	—	4,994	4,249	1985	1997	(1)
8000 Corporate Court, Building Eleven	Office	Springfield, VA	—	136	3,071	1,298	686	3,819	—	—	4,505	3,217	1989	1997	(1)
7375 Boston Boulevard, Building Ten	Office	Springfield, VA	—	23	2,685	854	47	3,515	—	—	3,562	2,676	1988	1997	(1)
7374 Boston Boulevard, Building Four	Office	Springfield, VA	—	241	1,605	1,438	303	2,981	—	—	3,284	2,765	1984	1997	(1)
7451 Boston Boulevard, Building Two	Office	Springfield, VA	—	249	1,542	1,345	535	2,601	—	—	3,136	2,609	1982	1997	(1)
The Skylyne	Residential	Oakland, CA	—	28,962	239,077	—	28,962	239,077	—	—	268,039	2,128	2020	N/A	(1)
Signature at Reston	Residential	Reston, VA	—	27,076	190,580	659	27,076	191,239	—	—	218,315	13,650	2018	2013	(1)
Proto Kendall Square	Residential	Cambridge, MA	—	9,243	127,248	3,336	9,245	130,582	—	—	139,827	7,883	2018	2015	(1)
The Avant at Reston Town Center	Residential	Reston, VA	—	20,350	91,995	846	20,350	92,841	—	—	113,191	17,204	2014	2010	(1)
The Lofts at Atlantic Wharf	Residential	Boston, MA	—	3,529	54,891	2,129	3,529	57,020	—	—	60,549	14,166	2011	2007	(1)
Boston Marriott Cambridge	Hotel	Cambridge, MA	—	478	37,918	32,595	478	70,513	—	—	70,991	48,286	1986/2017	1997	(1)
Kendall Center Green Garage	Garage	Cambridge, MA	—	—	35,035	6,432	—	41,467	—	—	41,467	14,327	1984	2006	(1)
Kendall Center Yellow Garage	Garage	Cambridge, MA	—	1,256	15,697	840	1,256	16,537	—	—	17,793	6,287	2006	2004	(1)
Kendall Center Blue Garage	Garage	Cambridge, MA	—	1,163	11,633	446	1,163	12,079	—	—	13,242	9,576	1990	1997	(1)
Reston Next (formerly Reston Gateway)	Development	Reston, VA	—	—	—	354,174	—	—	—	354,174	354,174	—	N/A	1998	N/A
2100 Pennsylvania Avenue	Development	Washington, DC	—	—	—	294,445	185,129	—	—	109,316	294,445	3,481	N/A	N/A	N/A
325 Main Street	Development	Cambridge, MA	—	174	—	161,275	772	—	—	160,677	161,449	—	N/A	1997	N/A
777 Harrison Street (formerly 425 Fourth Street)	Land	San Francisco, CA	—	144,647	—	25,930	—	47	170,530	—	170,577	—	N/A	2020	N/A
North First Master Plan	Land	San Jose, CA	—	35,004	—	3,937	—	—	38,941	—	38,941	—	N/A	2007	N/A
Plaza at Almaden	Land	San Jose, CA	—	—	—	36,431	—	—	36,431	—	36,431	—	N/A	2006	N/A
Back Bay Station Master Plan	Land	Boston, MA	—	—	—	30,643	—	—	30,643	—	30,643	—	N/A	N/A	N/A
Reston Gateway Master Plan	Land	Reston, VA	—	—	—	28,610	—	—	28,610	—	28,610	—	N/A	1998	N/A
Springfield Metro Center	Land	Springfield, VA	—	—	—	19,871	—	—	19,871	—	19,871	—	N/A	2007	N/A
214 Third Avenue	Land	Waltham, MA	—	—	—	19,206	—	—	19,206	—	19,206	—	N/A	2006	N/A


Boston Properties Limited Partnership Schedule 3—Real Estate and Accumulated Depreciation December 31, 2020 (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
CityPoint South Master Plan	Land	Waltham, MA	—			—		—		13,363		—			—			13,363			—		13,363		—		N/A	N/A	N/A
103 Fourth Avenue	Land	Waltham, MA	—			—		—		12,888		—			—			12,888			—		12,888		—		N/A	2007	N/A
Broad Run Business Park	Land	Loudoun County, VA	—			—		—		2,392		—			—			2,392			—		2,392		—		N/A	1998	N/A
Kendall Center Master Plan	Land	Cambridge, MA	—			—		—		2,145		—			—			2,145			—		2,145		—		N/A	1997	N/A
Weston Quarry	Land	Weston, MA	—			—		—		1,249		—			—			1,249			—		1,249		—		N/A	2001	N/A
Reston Overlook Master Plan	Land	Reston, VA	—			—		—		42		—			—			42			—		42		—		N/A	2000	N/A

			$	2,909,081	(2)	$	5,160,116	$	13,196,160	$	4,570,218	$	5,332,487	(3)	$	16,274,280	(4)	$	450,954	(5)	$	868,773	$	22,926,494	$	5,396,111

The aggregate cost and accumulated depreciation for tax purposes was approximately $23.0 billion and $5.0 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 unamortized deferred financing costs totaling approximately $(22.9) million.

(3)Includes Right of Use Assets - Finance Leases and Right of Use Assets - Operating Leases of approximately $214,091 and $148,640, respectively.