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Schedule III Properties And Accumulated Depreciation

12 Months Ended

Dec. 31, 2019

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

Schedule III Properties And Accumulated Depreciation


							Costs capitalized
							subsequent to
				Initial costs			acquisition		Total costs				Accumulated	Date of	Acquisition
					Acquired					Acquired			depreciation	acquisition	(A) or
	Metropolitan				ground	Buildings and		Carrying		ground	Buildings and		and	or	construction
	Area	Encumbrances		Land	lease	improvements	Improvements	costs	Land	lease	improvements	Total	amortization	construction	(C)
PROPERTIES:
36 NE 2nd Street	Miami	—		1,942	—	24,184	28,557	—	1,943	—	52,740	54,683	(20,112)	2002	(A)
2323 Bryan Street	Dallas	—		1,838	—	77,604	51,961	—	1,672	—	129,731	131,403	(77,314)	2002	(A)
300 Boulevard East	New York	—		5,140	—	48,526	56,701	—	5,140	—	105,227	110,367	(70,773)	2002	(A)
2334 Lundy Place	Silicon Valley	—		3,607	—	23,008	63	—	3,607	—	23,071	26,678	(11,349)	2002	(A)
2440 Marsh Lane	Dallas	—		1,477	—	10,330	74,858	—	1,486	—	85,179	86,665	(70,641)	2003	(A)
4849 Alpha Road	Dallas	—		2,983	—	10,650	44,117	—	2,983	—	54,767	57,750	(37,360)	2004	(A)
600 West Seventh Street	Los Angeles	—		18,478	—	50,824	78,054	—	18,537	—	128,819	147,356	(73,549)	2004	(A)
2045 & 2055 LaFayette Street	Silicon Valley	—		6,065	—	43,817	45	—	6,065	—	43,862	49,927	(20,264)	2004	(A)
11830 Webb Chapel Road	Dallas	—		5,881	—	34,473	2,534	—	5,881	—	37,007	42,888	(18,292)	2004	(A)
150 South First Street	Silicon Valley	—		2,068	—	29,214	1,499	—	2,068	—	30,713	32,781	(14,486)	2004	(A)
200 Paul Avenue	San Francisco	—		14,427	—	75,777	122,607	—	13,162	—	199,649	212,811	(95,975)	2004	(A)
1100 Space Park Drive	Silicon Valley	—		5,130	—	18,206	43,521	—	5,130	—	61,727	66,857	(36,889)	2004	(A)
3015 Winona Avenue	Los Angeles	—		6,534	—	8,356	6	—	6,534	—	8,362	14,896	(4,007)	2004	(A)
350 East Cermak Road	Chicago	—		8,466	—	103,232	248,477	—	8,620	—	351,555	360,175	(238,555)	2005	(A)
2401 Walsh Street	Silicon Valley	—		5,775	—	19,267	115	—	5,775	—	19,382	25,157	(9,323)	2005	(A)
2403 Walsh Street	Silicon Valley	—		5,514	—	11,695	124	—	5,514	—	11,819	17,333	(5,944)	2005	(A)
200 North Nash Street	Los Angeles	—		4,562	—	12,503	344	—	4,562	—	12,847	17,409	(7,010)	2005	(A)
731 East Trade Street	Charlotte	1,089	⁽¹⁾	1,748	—	5,727	267	—	1,748	—	5,994	7,742	(2,782)	2005	(A)
113 North Myers	Charlotte	—		1,098	—	3,127	5,007	—	1,098	—	8,134	9,232	(2,942)	2005	(A)
125 North Myers	Charlotte	—		1,271	—	3,738	6,378	—	1,271	—	10,116	11,387	(7,820)	2005	(A)
Paul van Vlissingenstraat 16	Amsterdam	—		—	—	15,255	26,000	—	—	—	41,255	41,255	(22,108)	2005	(A)
600-780 S. Federal	Chicago	—		7,849	—	27,881	44,112	—	7,304	—	72,538	79,842	(20,834)	2005	(A)
Chemin de l’Epinglier 2	Geneva	—		—	—	20,071	(990)	—	—	—	19,081	19,081	(8,548)	2005	(A)
7500 Metro Center Drive	Austin	—		1,177	—	4,877	71,399	—	1,177	—	76,276	77,453	(16,572)	2005	(A)
3 Corporate Place	New York	—		1,543	—	12,678	92,737	—	1,543	—	105,415	106,958	(87,175)	2005	(A)
1115 Centennial Avenue	New York	—		581	—	—	58,202	—	581	—	58,202	58,783	(2,518)	2005	(C)
4025 Midway Road	Dallas	—		2,196	—	14,037	30,398	—	2,017	—	44,614	46,631	(32,501)	2006	(A)
Clonshaugh Industrial Estate	Dublin	—		—	1,444	5,569	1,493	—	—	93	8,413	8,506	(5,526)	2006	(A)
Digital Houston	Houston	—		6,965	—	23,492	148,349	—	6,594	—	172,212	178,806	(80,689)	2006	(A)
120 E Van Buren	Phoenix	—		4,524	—	157,822	121,422	—	4,524	—	279,244	283,768	(148,484)	2006	(A)


						Costs capitalized
						subsequent to
			Initial costs			acquisition		Total costs				Accumulated	Date of	Acquisition
				Acquired					Acquired			depreciation	acquisition	(A) or
	Metropolitan			ground	Buildings and		Carrying		ground	Buildings and		and	or	construction
	Area	Encumbrances	Land	lease	improvements	Improvements	costs	Land	lease	improvements	Total	amortization	construction	(C)
PROPERTIES:
Gyroscoopweg 2E-2F	Amsterdam	—	—	—	13,450	(1,643)	—	—	—	11,807	11,807	(5,260)	2006	(A)
Clonshaugh Industrial Estate II	Dublin	—	—	—	—	77,840	—	—	—	77,840	77,840	(50,061)	2006	(C)
600 Winter Street	Boston	—	1,429	—	6,228	456	—	1,429	—	6,684	8,113	(2,757)	2006	(A)
2300 NW 89th Place	Miami	—	1,022	—	3,767	19	—	1,022	—	3,786	4,808	(1,800)	2006	(A)
Unit 9, Blanchardstown Corporate Park	Dublin	—	1,927	—	40,024	23,867	—	1,623	—	64,195	65,818	(28,897)	2006	(A)
111 8th Avenue	New York	—	—	—	17,688	29,149	—	—	—	46,837	46,837	(33,612)	2006	(A)
8100 Boone Boulevard	N. Virginia	—	—	—	158	2,034	—	—	—	2,192	2,192	(2,192)	2006	(A)
3011 Lafayette Street	Silicon Valley	—	3,354	—	10,305	53,352	—	3,354	—	63,657	67,011	(52,456)	2007	(A)
44470 Chilum Place	N. Virginia	—	3,531	—	37,360	1	—	3,531	—	37,361	40,892	(13,154)	2007	(A)
43881 Devin Shafron Drive	N. Virginia	—	4,653	—	23,631	97,322	—	4,653	—	120,953	125,606	(98,771)	2007	(A)
43831 Devin Shafron Drive	N. Virginia	—	3,027	—	16,247	1,441	—	3,027	—	17,688	20,715	(7,156)	2007	(A)
43791 Devin Shafron Drive	N. Virginia	—	3,490	—	17,444	78,515	—	3,490	—	95,959	99,449	(66,593)	2007	(A)
Mundells Roundabout	London	—	31,354	—	—	44,158	—	21,131	—	54,381	75,512	(15,485)	2007	(C)
1500 Space Park Drive	Silicon Valley	—	6,732	—	6,325	46,593	—	4,106	—	55,544	59,650	(53,696)	2007	(A)
Cressex 1	London	—	3,629	—	9,036	21,335	—	2,548	—	31,452	34,000	(22,054)	2007	(A)
Naritaweg 52	Amsterdam	—	—	1,192	23,441	(5,561)	—	—	917	18,155	19,072	(6,396)	2007	(A)
1 St. Anne’s Boulevard	London	—	1,490	—	1,045	(736)	—	1,014	—	785	1,799	(238)	2007	(A)
2 St. Anne’s Boulevard	London	—	922	—	695	34,379	—	676	—	35,320	35,996	(7,647)	2007	(A)
3 St. Anne’s Boulevard	London	—	22,079	—	16,351	81,570	—	14,901	—	105,099	120,000	(70,353)	2007	(A)
365 South Randolphville Road	New York	—	3,019	—	17,404	296,533	—	2,853	—	314,103	316,956	(155,008)	2008	(A)
701 & 717 Leonard Street	Dallas	—	2,165	—	9,934	969	—	2,165	—	10,903	13,068	(3,608)	2008	(A)
Manchester Technopark	Manchester	—	—	—	23,918	(7,539)	—	—	—	16,379	16,379	(5,427)	2008	(A)
1201 Comstock Street	Silicon Valley	—	2,093	—	1,606	27,687	—	3,398	—	27,988	31,386	(20,843)	2008	(A)
1550 Space Park Drive	Silicon Valley	—	—	—	—	—	—	—	—	—	—	—	2008	(A)
1525 Comstock Street	Silicon Valley	—	2,293	—	16,216	32,286	—	2,061	—	48,734	50,795	(36,862)	2008	(C)
43830 Devin Shafron Drive	N. Virginia	—	5,509	—	—	74,322	—	4,928	—	74,903	79,831	(50,129)	2009	(C)
1232 Alma Road	Dallas	—	2,267	—	3,740	66,014	—	2,266	—	69,755	72,021	(49,754)	2009	(A)
900 Quality Way	Dallas	—	1,446	—	1,659	69,987	—	1,437	—	71,655	73,092	(25,389)	2009	(A)
1210 Integrity Drive	Dallas	—	2,041	—	3,389	187,448	—	3,204	—	189,674	192,878	(13,445)	2009	(A)
907 Security Row	Dallas	—	333	—	344	97,851	—	2,112	—	96,416	98,528	(12,469)	2009	(A)
908 Quality Way	Dallas	—	6,730	—	4,493	13,954	—	2,067	—	23,110	25,177	(18,696)	2009	(A)
904 Quality Way	Dallas	—	760	—	744	6,812	—	1,151	—	7,165	8,316	(1,382)	2009	(A)
1215 Integrity Drive	Dallas	—	—	—	—	69,926	—	995	—	68,931	69,926	(23,033)	2009	(C)
1350 Duane & 3080 Raymond	Silicon Valley	—	7,081	—	69,817	354	—	7,081	—	70,171	77,252	(18,445)	2009	(A)


						Costs capitalized
						subsequent to
			Initial costs			acquisition		Total costs				Accumulated	Date of	Acquisition
				Acquired					Acquired			depreciation	acquisition	(A) or
	Metropolitan			ground	Buildings and		Carrying		ground	Buildings and		and	or	construction
	Area	Encumbrances	Land	lease	improvements	Improvements	costs	Land	lease	improvements	Total	amortization	construction	(C)
PROPERTIES:
60 & 80 Merritt	New York	—	3,418	—	71,477	94,485	—	3,148	—	166,232	169,380	(49,071)	2010	(A)
55 Middlesex	Boston	—	9,975	—	68,363	14,499	—	9,975	—	82,862	92,837	(29,930)	2010	(A)
128 First Avenue	Boston	—	5,465	—	185,348	39,134	—	5,465	—	224,482	229,947	(80,988)	2010	(A)
Cateringweg 5	Amsterdam	—	—	3,518	3,517	37,814	—	—	3,223	41,626	44,849	(9,429)	2010	(A)
1725 Comstock Street	Silicon Valley	—	3,274	—	6,567	39,308	—	3,274	—	45,875	49,149	(29,302)	2010	(A)
3105 Alfred Street	Silicon Valley	—	6,533	—	3,725	123,691	—	6,533	—	127,416	133,949	(38,853)	2010	(A)
365 Main Street	San Francisco	—	22,854	—	158,709	35,001	—	22,854	—	193,710	216,564	(60,449)	2010	(A)
720 2nd Street	San Francisco	—	3,884	—	116,861	13,601	—	3,884	—	130,462	134,346	(36,724)	2010	(A)
2260 East El Segundo	Los Angeles	—	11,053	—	51,397	17,433	—	11,053	—	68,830	79,883	(23,640)	2010	(A)
2121 South Price Road	Phoenix	—	7,335	—	238,452	215,183	—	4,835	—	456,135	460,970	(147,927)	2010	(A)
4030 Lafayette	N. Virginia	—	2,492	—	16,912	12,780	—	2,492	—	29,692	32,184	(9,100)	2010	(A)
4040 Lafayette	N. Virginia	—	1,246	—	4,267	24,887	—	1,246	—	29,154	30,400	(5,804)	2010	(A)
4050 Lafayette	N. Virginia	—	1,246	—	4,371	36,244	—	1,246	—	40,615	41,861	(26,913)	2010	(A)
2805 Lafayette Street	Silicon Valley	—	8,976	—	18,155	131,011	—	8,294	—	149,848	158,142	(38,954)	2010	(A)
29A International Business Park	Singapore	—	—	—	137,545	223,342	—	—	—	360,887	360,887	(152,206)	2010	(A)
43940 Digital Loudoun Plaza	N. Virginia	—	6,229	—	—	285,614	—	7,524	—	284,319	291,843	(90,924)	2011	(C)
44060 Digital Loudoun Plaza	N. Virginia	—	3,700	—	—	187,004	—	3,441	—	187,263	190,704	(31,598)	2011	(C)
44100 Digital Loudoun Plaza	N. Virginia	—	3,700	—	—	141,840	—	3,493	—	142,047	145,540	(17,596)	2011	(C)
43780 Digital Loudoun Plaza	N. Virginia	—	3,671	—	—	123,368	—	4,186	—	122,853	127,039	(12,532)	2011	(C)
1-11 Templar Road	Sydney	—	6,937	—	—	62,836	—	4,349	—	65,424	69,773	(19,316)	2011	(C)
13-23 Templar Road	Sydney	—	4,236	—	—	52,379	—	2,501	—	54,114	56,615	(1,034)	2011	(C)
Fountain Court	London	—	7,544	—	12,506	100,446	—	6,569	—	113,927	120,496	(30,892)	2011	(A)
72 Radnor Drive	Melbourne	—	2,568	—	—	66,029	—	1,737	—	66,860	68,597	(12,370)	2011	(C)
98 Radnor Drive	Melbourne	—	1,899	—	—	36,140	—	1,339	—	36,700	38,039	(17,738)	2011	(C)
105 Cabot Street	Boston	—	2,386	—	—	35,876	—	1,161	—	37,101	38,262	(11,061)	2011	(C)


						Costs capitalized
						subsequent to
			Initial costs			acquisition		Total costs				Accumulated	Date of	Acquisition
				Acquired					Acquired			depreciation	acquisition	(A) or
	Metropolitan			ground	Buildings and		Carrying		ground	Buildings and		and	or	construction
	Area	Encumbrances	Land	lease	improvements	Improvements	costs	Land	lease	improvements	Total	amortization	construction	(C)
PROPERTIES:
3825 NW Aloclek Place	Portland	—	1,689	—	—	58,230	—	1,689	—	58,230	59,919	(24,836)	2011	(C)
Profile Park	Dublin	—	6,288	—	—	56,087	—	2,050	—	60,325	62,375	(6,256)	2011	(C)
760 Doug Davis Drive	Atlanta	—	4,837	—	53,551	3,373	—	4,837	—	56,924	61,761	(15,131)	2011	(A)
2501 S. State Hwy 121	Dallas	—	23,137	—	93,943	11,954	—	16,242	—	112,792	129,034	(35,468)	2012	(A)
9333 Grand Avenue	Chicago	—	5,686	—	14,515	75,076	—	1,205	—	94,072	95,277	(40,321)	2012	(A)
9355 Grand Avenue	Chicago	—	—	—	—	228,171	—	2,518	—	225,653	228,171	(30,014)	2012	(A)
9377 Grand Avenue	Chicago	—	—	—	—	133,910	—	2,799	—	131,111	133,910	(6,039)	2012	(A)
850 E Collins	Dallas	—	1,614	—	—	86,565	—	1,614	—	86,565	88,179	(23,682)	2012	(C)
950 E Collins	Dallas	—	1,546	—	—	75,695	—	1,546	—	75,695	77,241	(15,163)	2012	(C)
400 S. Akard	Dallas	—	10,075	—	62,730	2,943	—	10,075	—	65,673	75,748	(13,571)	2012	(A)
410 Commerce Boulevard	New York	—	—	—	—	30,260	—	—	—	30,260	30,260	(15,310)	2012	(C)
Croydon	London	—	1,683	—	104,728	47,591	—	2,367	—	151,635	154,002	(31,430)	2012	(A)
Watford	London	—	—	7,355	219,273	5,018	—	—	6,492	225,154	231,646	(48,278)	2012	(A)
Unit 21 Goldsworth Park	London	—	17,334	—	928,129	(121,080)	—	13,237	—	811,146	824,383	(182,102)	2012	(A)
23 Waterloo Road	Sydney	—	7,112	—	3,868	(3,564)	—	4,804	—	2,612	7,416	(500)	2012	(A)
1 Rue Jean-Pierre	Paris	—	9,621	—	35,825	(6,820)	—	8,177	—	30,449	38,626	(7,732)	2012	(A)
Liet-dit le Christ de Saclay	Paris	—	3,402	—	3,090	(975)	—	2,891	—	2,626	5,517	(861)	2012	(A)
127 Rue de Paris	Paris	—	8,637	—	10,838	(2,923)	—	7,341	—	9,211	16,552	(2,910)	2012	(A)
1900 S. Price Road	Phoenix	—	5,380	—	16,975	(11,394)	—	2,423	—	8,538	10,961	(2,412)	2013	(A)
371 Gough Road	Toronto	—	7,394	—	677	93,801	—	5,838	—	96,034	101,872	(13,452)	2013	(A)
1500 Towerview Road	Minneapolis	—	10,190	—	20,054	3,191	—	10,190	—	23,245	33,435	(5,566)	2013	(A)
Principal Park	London	—	11,837	—	—	76,060	—	7,097	—	80,800	87,897	(13,080)	2013	(C)
Liverpoolweg 10	Amsterdam	—	733	—	3,122	9,429	—	630	—	12,654	13,284	(3,020)	2013	(A)
DePresident	Amsterdam	—	6,737	—	—	116,399	—	6,996	—	116,140	123,136	(5,534)	2013	(C)
Crawley 2	London	—	24,305	—	—	33,139	—	4,252	—	53,192	57,444	(2,048)	2014	(C)
3 Loyang Way	Singapore	—	—	—	—	180,615	—	—	—	180,615	180,615	(11,645)	2015	(A)
Digital Loudoun III	N. Virginia	—	43,000	—	—	800,087	—	47,399	—	795,688	843,087	(37,172)	2015	(C)
Digital Frankfurt	Frankfurt	—	5,543	—	—	137,399	—	4,111	—	138,831	142,942	(3,706)	2015	(C)


							Costs capitalized
							subsequent to
				Initial costs			acquisition		Total costs				Accumulated	Date of	Acquisition
					Acquired					Acquired			depreciation	acquisition	(A) or
	Metropolitan				ground	Buildings and		Carrying		ground	Buildings and		and	or	construction
	Area		Encumbrances	Land	lease	improvements	Improvements	costs	Land	lease	improvements	Total	amortization	construction	(C)
56 Marietta Street	Atlanta	⁽²⁾	—	1,700	—	211,397	28,272	—	1,715	—	239,654	241,369	(42,690)	2015	(A)
2 Peekay Drive	New York	⁽²⁾	—	—	—	115,439	(16,103)	—	—	—	99,336	99,336	(23,282)	2015	(A)
100 Delawanna Avenue	New York	⁽²⁾	—	3,600	—	85,438	11,712	—	3,600	—	97,150	100,750	(14,734)	2015	(A)
60 Hudson Street	New York	⁽²⁾	—	—	—	32,280	18,735	—	—	—	51,015	51,015	(17,575)	2015	(A)
32 Avenue of the Americas	New York	⁽²⁾	—	—	—	30,980	4,362	—	—	—	35,342	35,342	(12,081)	2015	(A)
3433 S 120th Place	Seattle	⁽²⁾	—	—	—	11,688	(1,312)	(5,351)	—	—	5,025	5,025	(5,024)	2015	(A)
8435 Stemmons Freeway	Dallas	⁽²⁾	—	—	—	5,023	2,725	—	—	—	7,748	7,748	(2,818)	2015	(A)
2625 Walsh Avenue	Silicon Valley	⁽²⁾	—	—	—	4,276	9,051	—	—	—	13,327	13,327	(4,017)	2015	(A)
111 8th Avenue - Telx	New York	⁽²⁾	—	—	—	42,454	18,899	—	—	—	61,353	61,353	(23,063)	2015	(A)
350 East Cermak Road - Telx	Chicago	⁽²⁾	—	—	—	13,933	11,031	—	—	—	24,964	24,964	(8,114)	2015	(A)
200 Paul Avenue - Telx	San Francisco	⁽²⁾	—	—	—	6,719	4,632	—	—	—	11,351	11,351	(3,864)	2015	(A)
2323 Bryan Street - Telx	Dallas	⁽²⁾	—	—	—	5,191	5,621	—	—	—	10,812	10,812	(3,728)	2015	(A)
600 W. 7th Street - Telx	Los Angeles	⁽²⁾	—	—	—	3,689	8,050	—	—	—	11,739	11,739	(3,018)	2015	(A)
3825 NW Aloclek Place - Telx	Portland	⁽²⁾	—	—	—	3,131	1,347	—	—	—	4,478	4,478	(1,857)	2015	(A)
120 E. Van Buren Street - Telx	Phoenix	⁽²⁾	—	—	—	2,848	3,451	—	—	—	6,299	6,299	(1,910)	2015	(A)
36 NE 2nd Street - Telx	Miami	⁽²⁾	—	—	—	1,842	4,374	—	—	—	6,216	6,216	(1,929)	2015	(A)
600-780 S. Federal Street - Telx	Chicago	⁽²⁾	—	—	—	1,815	4,577	—	—	—	6,392	6,392	(1,588)	2015	(A)
113 N. Myers Street - Telx	Charlotte	⁽²⁾	—	—	—	476	1,142	—	—	—	1,618	1,618	(482)	2015	(A)
1100 Space Park Drive - Telx	Silicon Valley	⁽²⁾	—	—	—	352	2,265	—	—	—	2,617	2,617	(484)	2015	(A)
300 Boulevard East - Telx	New York	⁽²⁾	—	—	—	197	168	—	—	—	365	365	(186)	2015	(A)
Science Park	Amsterdam	⁽³⁾	—	665	—	75,095	13,037	—	—	—	88,797	88,797	(8,152)	2016	(A)
Sovereign House	London	⁽³⁾	—	7,943	—	75,184	58,238	—	—	—	141,365	141,365	(20,816)	2016	(A)
Amstel Business Park	Amsterdam	⁽³⁾	—	2,991	—	58,138	12,448	—	3,028	—	70,549	73,577	(20,491)	2016	(A)
Olivers Yard	London	⁽³⁾	—	7,943	—	34,744	2,357	—	—	—	45,044	45,044	(13,783)	2016	(A)
Bonnington House	London	⁽³⁾	—	—	—	14,127	64,055	—	—	—	78,182	78,182	(1,405)	2016	(A)
West Drayton	London	⁽³⁾	—	—	—	10,135	3,519	—	—	—	13,654	13,654	(7,281)	2016	(A)
Lyonerstrasse	Frankfurt	⁽³⁾	—	—	—	8,407	6,393	—	—	—	14,800	14,800	(5,137)	2016	(A)
Meridian Gate	London	⁽³⁾	—	—	—	5,893	1,621	—	—	—	7,514	7,514	(3,829)	2016	(A)
2425-2553 Edgington Street	Chicago		—	11,950	—	1,615	64	—	11,959	—	1,670	13,629	(160)	2017	(C)
44520 Hastings Drive	N. Virginia	⁽⁴⁾	104,000	6,140	—	108,105	1,581	—	6,140	—	109,686	115,826	(14,806)	2017	(A)


											Costs capitalized
											subsequent to
					Initial costs						acquisition				Total costs								Accumulated		Date of	Acquisition
							Acquired										Acquired						depreciation		acquisition	(A) or
	Metropolitan						ground			Buildings and			Carrying				ground		Buildings and				and		or	construction
	Area		Encumbrances		Land		lease		improvements		Improvements		costs		Land		lease		improvements		Total		amortization		construction	(C)
44480 Hastings Drive	N. Virginia	⁽⁴⁾		—		12,860		—		278,384		1,227		—		12,860		—		279,611		292,471		(38,147)	2017	(A)
44521 Hastings Drive	N. Virginia	⁽⁴⁾		—		13,210		—		315,539		361		—		13,210		—		315,900		329,110		(43,315)	2017	(A)
44461 Chilum Place	N. Virginia	⁽⁴⁾		—		9,620		—		249,371		523		—		9,620		—		249,894		259,514		(34,452)	2017	(A)
21625 Gresham Drive	N. Virginia	⁽⁴⁾		—		17,500		—		448,968		488		—		17,500		—		449,456		466,956		(62,151)	2017	(A)
2200 Busse Road	Chicago	⁽⁴⁾		—		17,270		—		384,558		1,905		—		17,270		—		386,463		403,733		(50,399)	2017	(A)
2299 Busse Road	Chicago	⁽⁴⁾		—		12,780		—		348,348		(1,687)		—		12,780		—		346,661		359,441		(47,004)	2017	(A)
1780 Business Center Drive	N. Virginia	⁽⁴⁾		—		7,510		—		106,363		1,122		—		7,510		—		107,485		114,995		(13,001)	2017	(A)
8217 Linton Hall Road	N. Virginia	⁽⁴⁾		—		22,340		—		81,985		355		—		22,340		—		82,340		104,680		(9,386)	2017	(A)
1400 East Devon Avenue	Chicago	⁽⁴⁾		—		11,012		—		178,627		45,871		—		9,994		—		225,516		235,510		(17,462)	2017	(A)
2220 De La Cruz Blvd	Silicon Valley	⁽⁴⁾		—		84,650		—		634,007		4,588		—		84,650		—		638,595		723,245		(81,549)	2017	(A)
1 Century Place	Toronto	⁽⁴⁾		—		26,600		—		116,863		1,302		—		8,479		—		136,286		144,765		(4,861)	2017	(C)
505 North Railroad Avenue	Chicago			—		20,431		—		245,810		(33,149)		—		12,271		—		220,821		233,092		(12,612)	2017	(A)
250 Williams	Atlanta			—		—		—		—		26,774		—		—		—		26,774		26,774		(5,240)	2017	(C)
CME Agreement	Chicago			—		—		—		—		42,875		—		—		—		42,875		42,875		(21,741)	2017	(C)
De President II	Amsterdam			—		6,315		—		—		37,181		—		2,453		—		41,043		43,496		—	2017	(C)
2825-2845 Lafayette Street	Silicon Valley			—		—		—		2,941		60		—		—		—		3,001		3,001		(3,001)	2018	(C)
21780 Filigree Court	N. Virginia			—		24,315		—		3,039		1,346		—		25,740		—		2,960		28,700		(491)	2019	(C)
Other				—		—		—		—		55,482		—		25		—		55,457		55,482		(18,053)
			$	105,089	$	930,961	$	13,509	$	8,327,303	$	7,620,170	$	(5,351)	$	804,830	$	10,725	$	16,071,037	$	16,886,592	$	(4,536,169)

(1)	The balance shown excludes an unamortized premium of $54.

(2)	Represents properties acquired in the Telx Acquisition.

(3)	Represents properties acquired in the European Portfolio Acquisition.

(4)	Represents properties acquired in the DFT Merger.

(1) Tax Cost

The aggregate gross cost of the Company’s properties for federal income tax purposes approximated $19.7 billion (unaudited) as of December 31, 2019.

(2) Historical Cost and Accumulated Depreciation and Amortization

The following table reconciles the historical cost of the Company’s properties for financial reporting purposes for each of the years in the three-year period ended December 31, 2019.


	Year Ended December 31,
	2019		2018		2017
Balance, beginning of year	$	17,055,016	$	16,915,936	$	11,558,469
Additions during period (acquisitions and improvements)		833,836		223,163		5,663,404
Deductions during period (dispositions, impairments and assets held for sale)		(1,002,260)		(84,083)		(305,937)
Balance, end of year	$	16,886,592	$	17,055,016	$	16,915,936

The following table reconciles accumulated depreciation and amortization of the Company’s properties for financial reporting purposes for each of the years in the three-year period ended December 31, 2019.


	Year Ended December 31,
	2019		2018		2017
Balance, beginning of year	$	3,935,267	$	3,238,227	$	2,668,509
Additions during period (depreciation and amortization expense)		805,916		714,336		612,970
Deductions during period (dispositions and assets held for sale)		(205,014)		(17,296)		(43,252)
Balance, end of year	$	4,536,169	$	3,935,267	$	3,238,227

Schedules other than those listed above are omitted because they are not applicable or the information required is included in the consolidated financial statements or the notes thereto.