Biggest building emitters in the US

The 100 highest reported greenhouse-gas totals across all six disclosure cities, latest year per building. Per-city lists: New York City · Chicago · Seattle · Los Angeles · Cambridge · San Francisco

Top 100 by reported emissions

#	Building	City	Emissions	Score	Floor area
1	1720 E CESAR CHAVEZ AVE EAST	Los Angeles	2,444,920 tCO₂e	D1	822,974 sq ft
2	St. Barnabas Nursing Home 1	New York City	1,930,445 tCO₂e	D1	115,495 sq ft
3	St. Barnabas Parent	New York City	1,925,440 tCO₂e	D1	521,174 sq ft
4	UW - UNIVERSITY OF WASHINGTON SEATTLE CAMPUS (Master)	Seattle	581,655 tCO₂e	–—	15,216,474 sq ft
5	136 - St. Vincent Ferrer St. Catherine Siena - Parent Property	New York City	414,109 tCO₂e	–—	84,131 sq ft
6	9011 WOODMAN AVE	Los Angeles	268,794 tCO₂e	–—	48,810 sq ft
7	Pratt S.I. Campus - Total	New York City	141,938 tCO₂e	–—	438,530 sq ft
8	Co-Op City	New York City	138,481 tCO₂e	D46	21,150,159 sq ft
9	NYP Columbia (West Campus)	New York City	132,358 tCO₂e	D12	5,144,107 sq ft
10	Rush University Medical Center	Chicago	97,340 tCO₂e	D36	4,232,186 sq ft
11	Benchmarking Group - 211	New York City	93,318 tCO₂e	–—	5,970,773 sq ft
12	120 - Epiphany Church and Lower School - Parent Property	New York City	91,274 tCO₂e	D1	53,000 sq ft
13	Franklin Plaza 1656	New York City	85,851 tCO₂e	D1	1,838,700 sq ft
14	Columbia University Main Campus	New York City	85,124 tCO₂e	–—	6,890,880 sq ft
15	DOC_9202_Rikers Island Bakery	New York City	83,035 tCO₂e	–—	111,450 sq ft
16	NYU: Washington Square CoGen Campus	New York City	80,240 tCO₂e	–—	7,553,129 sq ft
17	METROPOLITIAN PIER AND EXPOSITION AUTHORITY	Chicago	78,782 tCO₂e	–—	9,245,333 sq ft
18	LL84 NYU Langone Health - Main Campus	New York City	76,581 tCO₂e	–—	3,532,083 sq ft
19	Parkchester Full Campus (North + South)	New York City	72,078 tCO₂e	D28	12,817,770 sq ft
20	LL84 NYU Langone Health Tisch Hospital	New York City	71,553 tCO₂e	D1	689,324 sq ft
21	Rockefeller Center (All Bldgs)	New York City	71,221 tCO₂e	–—	8,053,115 sq ft
22	Rochdale Village - Campus	New York City	69,444 tCO₂e	D9	7,898,975 sq ft
23	Rochdale Village - 4436332	New York City	69,444 tCO₂e	D1	254,803 sq ft
24	Hudson Yards Cogen Campus	New York City	68,380 tCO₂e	–—	7,739,076 sq ft
25	Warren Weaver Hall	New York City	66,677 tCO₂e	–—	178,324 sq ft
26	Willis Tower (Rivion LLC)	Chicago	63,190 tCO₂e	D32	4,534,594 sq ft
27	MSKCC - Super Campus -(Main Campus / Schwartz / RRL/ ZRC )	New York City	63,172 tCO₂e	–—	2,437,399 sq ft
28	CEPSR Schapiro	New York City	60,211 tCO₂e	–—	207,940 sq ft
29	AECOM College, Laboratory Spaces and Weiler Campus	New York City	59,462 tCO₂e	–—	2,173,486 sq ft
30	NYP Cornell (East Campus)	New York City	55,574 tCO₂e	D47	2,801,795 sq ft
31	111 Eighth Avenue	New York City	53,701 tCO₂e	–—	2,375,706 sq ft
32	Moses Campus	New York City	52,888 tCO₂e	–—	1,590,710 sq ft
33	DEP > BWT_9611_Newtown Creek WPCP Campus	New York City	51,516 tCO₂e	D1	1,306,271 sq ft
34	Benchmarking Group - 212	New York City	51,477 tCO₂e	–—	3,472,597 sq ft
35	1980-2040 East Tremont Avenue - Parent Property	New York City	49,023 tCO₂e	D1	2,820,651 sq ft
36	2020 East Tremont Avenue	New York City	49,023 tCO₂e	D1	2,409,161 sq ft
37	MSKCC Super Campus - Main Campus / RRL / ZRC	New York City	48,737 tCO₂e	–—	2,490,355 sq ft
38	CHI1 - Chicago DC1	Chicago	48,295 tCO₂e	B75	474,979 sq ft
39	NH LIJ ZH Hospital Campus	New York City	47,836 tCO₂e	D12	1,699,445 sq ft
40	P&S - Black	New York City	47,833 tCO₂e	–—	721,049 sq ft
41	P&S - Black LL97	New York City	47,833 tCO₂e	–—	721,049 sq ft
42	NH LIJ 75-59 263rd St 4463314	New York City	47,164 tCO₂e	–—	22,298 sq ft
43	Parkchester South - 2039430200	New York City	46,701 tCO₂e	–—	50,000 sq ft
44	DEP > BWT_859_Wards Island WPCP Campus	New York City	46,043 tCO₂e	D20	1,546,246 sq ft
45	Illinois Institute of Technology	Chicago	45,930 tCO₂e	–—	2,944,091 sq ft
46	Benchmarking Group - 38	New York City	45,282 tCO₂e	A93	2,381,204 sq ft
47	Moses Campus	New York City	44,394 tCO₂e	D30	1,715,442 sq ft
48	NH LIJ Hillside Campus	New York City	43,849 tCO₂e	D21	1,729,945 sq ft
49	NH LIJ Medical	New York City	42,561 tCO₂e	D15	1,575,735 sq ft
50	NMH Feinberg Pavilion and Galter Pavilion	Chicago	41,775 tCO₂e	C65	2,200,000 sq ft
51	3401 BAINBRIDGE AVE	New York City	41,357 tCO₂e	D1	626,044 sq ft
52	Stroger Hospital Campus	Chicago	40,317 tCO₂e	D12	1,596,300 sq ft
53	Stuyvesant Town	New York City	39,464 tCO₂e	B83	9,055,218 sq ft
54	1300 Morris Park Avenue	New York City	39,017 tCO₂e	–—	572,892 sq ft
55	Benchmarking Group - 226	New York City	38,988 tCO₂e	–—	2,345,603 sq ft
56	Benchmarking Group - 10	New York City	38,540 tCO₂e	–—	3,385,955 sq ft
57	388 Greenwich - HQ	New York City	38,264 tCO₂e	B82	2,329,941 sq ft
58	H+H_9691_Bellevue Hospital: Center	New York City	37,776 tCO₂e	A91	2,276,300 sq ft
59	CCD	Chicago	36,452 tCO₂e	D5	1,205,371 sq ft
60	20-30 Hudson Yards	New York City	34,862 tCO₂e	–—	3,810,623 sq ft
61	30 Rockefeller Plaza (Bld 1 & 9)	New York City	34,855 tCO₂e	–—	2,862,565 sq ft
62	Western Union Building	New York City	34,247 tCO₂e	–—	1,028,016 sq ft
63	1250-1300 Morris Park Avenue (South Campus, Lot 1)	New York City	33,437 tCO₂e	–—	911,540 sq ft
64	CIG MMA_4427_Metropolitan Museum of Art	New York City	33,134 tCO₂e	–—	2,153,282 sq ft
65	Warbasse House	New York City	31,947 tCO₂e	D38	3,438,544 sq ft
66	2701 W 6th St	New York City	31,654 tCO₂e	–—	63,600 sq ft
67	RIIS/RIIS II/WALD/BARUCH/BARUCH HOUSES ADDITION CAMPUS	New York City	31,233 tCO₂e	C65	5,348,775 sq ft
68	H+H_4318_Kings County Hospital: Buildings A, B, C	New York City	30,242 tCO₂e	D2	658,920 sq ft
69	Benchmarking Group - 33	New York City	29,734 tCO₂e	–—	2,518,921 sq ft
70	Deutsche Bank Center	New York City	29,493 tCO₂e	–—	2,598,958 sq ft
71	RED HOOK EAST/RED HOOK WEST CAMPUS	New York City	28,110 tCO₂e	D2	2,728,410 sq ft
72	Benchmarking Group - 23	New York City	27,497 tCO₂e	A94	1,654,909 sq ft
73	KERN57 - 303 East 57th Street	New York City	27,242 tCO₂e	D1	539,027 sq ft
74	JOHNSON	New York City	27,122 tCO₂e	D1	1,261,187 sq ft
75	DEP > BWT_840_North River WPCP Campus	New York City	26,978 tCO₂e	D9	1,129,933 sq ft
76	600 West Chicago & 900 N Kingsbury	Chicago	26,408 tCO₂e	D39	2,376,470 sq ft
77	PENN 1 (LL97)	New York City	26,265 tCO₂e	–—	2,488,353 sq ft
78	Philippine Center Management Board	New York City	25,965 tCO₂e	–—	39,000 sq ft
79	One Bryant Park	New York City	25,651 tCO₂e	C62	2,237,686 sq ft
80	Main Campus - Lot 05 (Part of MSKCC - Main Campus / RRL / ZRC)	New York City	24,657 tCO₂e	–—	1,208,625 sq ft
81	Ann & Robert H. Lurie Children's Hospital of Chicago	Chicago	24,546 tCO₂e	B76	1,287,909 sq ft
82	Benchmarking Group - 8	New York City	23,553 tCO₂e	A90	1,289,724 sq ft
83	JOHNSON/JEFFERSON CAMPUS	New York City	23,489 tCO₂e	D10	2,758,857 sq ft
84	Brooklyn Army Terminal - Campus	New York City	23,485 tCO₂e	–—	3,926,973 sq ft
85	The John Hancock Center	Chicago	22,818 tCO₂e	D24	2,290,873 sq ft
86	CIG > LCPA_CAMPUS ON CMP	New York City	22,795 tCO₂e	–—	2,396,331 sq ft
87	55 Water	New York City	22,761 tCO₂e	B78	3,486,407 sq ft
88	Soldier Field	Chicago	22,703 tCO₂e	–—	1,548,634 sq ft
89	Water Tower Place	Chicago	22,605 tCO₂e	–—	2,581,145 sq ft
90	DEP > BWT_9609_Hunts Point WPCP Campus	New York City	22,547 tCO₂e	B74	509,197 sq ft
91	Benchmarking Group - 115	New York City	22,251 tCO₂e	D31	1,081,100 sq ft
92	H+H_4327_Woodhull Medical and Mental Health Center	New York City	22,171 tCO₂e	D20	1,075,702 sq ft
93	New York Marriott Marquis Hotel - LL84	New York City	22,045 tCO₂e	D22	1,943,287 sq ft
94	32 Sixth Avenue	New York City	21,859 tCO₂e	–—	1,128,856 sq ft
95	Jerome L Greene Science Center/Lenfest Center for the Arts	New York City	21,736 tCO₂e	–—	607,803 sq ft
96	Maimonides - Main Campus	New York City	21,706 tCO₂e	C60	895,621 sq ft
97	One New York Plaza (13 SOUTH STREET)	New York City	21,686 tCO₂e	C59	2,542,563 sq ft
98	CH1	Chicago	21,620 tCO₂e	A90	160,000 sq ft
99	DEP > BWT_9607_Bowery Bay WPCP Campus	New York City	21,467 tCO₂e	B77	1,417,230 sq ft
100	Benchmarking Group - 51	New York City	21,436 tCO₂e	–—	2,516,390 sq ft

Frequently asked questions

Which US building emits the most carbon?

Among buildings in city benchmarking disclosures, 1720 E CESAR CHAVEZ AVE EAST in Los Angeles reported the most: 2,444,920 tCO₂e in its latest disclosure year.

Where do these emissions figures come from?

Each figure is the building's own reported total greenhouse-gas emissions (metric tons CO₂e) from its city's mandatory energy-benchmarking disclosure — NYC LL84, Chicago, Seattle, LA EBEWE, Cambridge BEUDO or San Francisco. Only the latest disclosure year per building is ranked.

Dataset updated July 2026 . Latest disclosure year per building.