Biggest building emitters in California

Top 100 by reported greenhouse-gas emissions under AB 802 (Public Resources Code §25402.10), latest disclosure year per building. AB 802 requires every California commercial building over 50,000 sq ft to report energy use to the CEC annually; the CEC publicly discloses the results statewide.

Top 100 by reported emissions

#	Building	City	Emissions	Score	Floor area
1	Coresite Sv8	California	27,420,510 tCO₂e	D1	175,000 sq ft
2	2825-2829 Watt Avenue	California	24,960,546 tCO₂e	D1	56,831 sq ft
3	Hct America, Inc	California	12,986,194 tCO₂e	–—	120,000 sq ft
4	Bass Medical Group	California	12,533,107 tCO₂e	D1	8,500 sq ft
5	Sacramento Ca I, Sgf, Llc	California	11,886,481 tCO₂e	–—	54,276 sq ft
6	Bay Landing Hotel	California	995,251 tCO₂e	D1	73,100 sq ft
7	Courtyard Marriott Old Town	California	914,859 tCO₂e	D1	74,584 sq ft
8	Eskaton Manteca Manor	California	732,476 tCO₂e	D1	217,800 sq ft
9	Ardagh Glass - Madera	California	640,564 tCO₂e	–—	1,267,865 sq ft
10	120020-Freedom Centre (Spaces 16-24)	California	580,088 tCO₂e	–—	73,325 sq ft
11	Jeld-Wen Doors, Rocklin	California	571,297 tCO₂e	–—	243,435 sq ft
12	208 - 274 Lindbergh Ave	California	418,080 tCO₂e	–—	59,840 sq ft
13	Cintas Corporation	California	358,560 tCO₂e	–—	75,000 sq ft
14	Camden Village	California	299,097 tCO₂e	D1	441,103 sq ft
15	Whitney High School	California	245,653 tCO₂e	D1	91,504 sq ft
16	Ucla Main Campus	California	239,571 tCO₂e	–—	27,989,925 sq ft
17	Pacific Commons - Bldg 8	California	196,361 tCO₂e	–—	747,914 sq ft
18	3802-Glendale Galleria	California	175,650 tCO₂e	–—	1,183,330 sq ft
19	The Beacon (Bc095)	California	163,345 tCO₂e	D1	497,986 sq ft
20	Woodbridge Terrace	California	156,903 tCO₂e	D1	103,808 sq ft
21	6664 Lonetree Blvd	California	150,447 tCO₂e	D1	77,063 sq ft
22	Digital Garage Development	California	139,816 tCO₂e	D1	81,406 sq ft
23	Intel Mission Campus	California	120,106 tCO₂e	–—	2,215,115 sq ft
24	Gds - San Diego 10808	California	119,775 tCO₂e	–—	93,646 sq ft
25	1400 S Figueroa St, Los Angeles, Ca 90015, Usa	California	113,622 tCO₂e	D1	65,182 sq ft
26	San Francisco International Airport (Sfo)	California	111,514 tCO₂e	–—	20,835,176 sq ft
27	Ca1	California	94,994 tCO₂e	–—	342,797 sq ft
28	Uc Davis Campus	California	93,701 tCO₂e	–—	11,398,733 sq ft
29	360 Post Street	California	90,098 tCO₂e	D1	92,004 sq ft
30	Golden Gate Theatre-Updated	California	85,987 tCO₂e	–—	146,793 sq ft
31	Southland Office Center	California	75,231 tCO₂e	D1	132,000 sq ft
32	Uc Irvine	California	65,926 tCO₂e	–—	8,534,295 sq ft
33	0172 Las Colinas Detention Facility	California	63,408 tCO₂e	–—	482,993 sq ft
34	2220 De La Cruz Blvd (Sc1)	California	59,844 tCO₂e	–—	470,999 sq ft
35	National University 3678 Aero Court	California	58,371 tCO₂e	–—	39,070 sq ft
36	National University Kearny Mesa Bldg. B - Parking	California	58,284 tCO₂e	–—	117,154 sq ft
37	Z073 - Central Utility Plant	California	57,597 tCO₂e	–—	3,426,018 sq ft
38	Outlook Properties	California	56,550 tCO₂e	D1	94,000 sq ft
39	Collins Aerospace	California	56,277 tCO₂e	–—	636,837 sq ft
40	Ntt Global Data Centers Americas - Ca1, Ca2, And Ca3 Campus	California	55,955 tCO₂e	–—	556,588 sq ft
41	Uc Davis	California	55,311 tCO₂e	–—	11,398,733 sq ft
42	Pcup & Parnassus Campus	California	52,138 tCO₂e	–—	3,373,568 sq ft
43	San Diego State University	California	50,990 tCO₂e	–—	5,466,569 sq ft
44	Lockheed Martin	California	49,057 tCO₂e	–—	3,903,450 sq ft
45	Lax06901 - South Bay Dis Ctr 7	California	46,836 tCO₂e	D1	124,390 sq ft
46	Wp&A Lost Hills Facility	California	46,526 tCO₂e	–—	1,500,275 sq ft
47	University Park Campus (Upc)	California	46,348 tCO₂e	–—	8,763,109 sq ft
48	Port Of Stockton - 719 Gillis	California	44,363 tCO₂e	D1	90,000 sq ft
49	2045 - 2055 Lafayette St (Sjc17)	California	43,952 tCO₂e	–—	300,000 sq ft
50	26464 Corporate Ave	California	41,459 tCO₂e	–—	131,896 sq ft
51	University Of California, Riverside	California	37,765 tCO₂e	–—	56,326 sq ft
52	Coresite Sv7	California	34,592 tCO₂e	–—	231,000 sq ft
53	Simone Little Italy (Lx138)	California	30,089 tCO₂e	D1	612,000 sq ft
54	Ucsd Health - La Jolla Campus	California	29,805 tCO₂e	D17	1,619,583 sq ft
55	Central Jail & Arraignment Courthouse (Ab 802)	California	29,571 tCO₂e	–—	1,178,321 sq ft
56	Lam Research - Bagley Campus	California	29,028 tCO₂e	–—	608,583 sq ft
57	Copy Of Children'S Hospital Los Angeles (For Ebewe 2018, Do Not Delete)	California	28,339 tCO₂e	D12	1,556,482 sq ft
58	Diamond Pet Foods Ripon	California	27,910 tCO₂e	–—	548,615 sq ft
59	Ronald Reagan Ucla Medical Center	California	27,629 tCO₂e	B73	1,258,821 sq ft
60	Los Angeles Hospital Campus	California	27,448 tCO₂e	D49	1,573,092 sq ft
61	Niagara Bottling, Llc- Ria	California	26,957 tCO₂e	–—	520,800 sq ft
62	Frito Lay Modesto	California	26,780 tCO₂e	–—	950,000 sq ft
63	Eisenhower Medical Center	California	26,745 tCO₂e	D1	279,474 sq ft
64	Cor-California State Prison, Corcoran	California	26,620 tCO₂e	–—	1,652,194 sq ft
65	Intel Folsom	California	26,411 tCO₂e	–—	1,705,015 sq ft
66	200 Paul Ave (Sfo10)	California	25,547 tCO₂e	–—	557,226 sq ft
67	California State University, Fullerton	California	25,345 tCO₂e	–—	4,073,338 sq ft
68	02560- Grover Beach, Ca	California	25,106 tCO₂e	D1	74,379 sq ft
69	Harbor Ucla Medical Center Campus (Ab 802)	California	24,112 tCO₂e	D1	957,117 sq ft
70	Kla Corporation	California	23,356 tCO₂e	–—	749,922 sq ft
71	Med Center - Interns & Residents Building (Ab 802)	California	23,068 tCO₂e	D1	142,448 sq ft
72	San Francisco General Hospital	California	22,924 tCO₂e	D18	1,370,904 sq ft
73	Cal Poly San Luis Obispo	California	22,765 tCO₂e	–—	5,450,632 sq ft
74	Qualcomm W/Wt	California	22,470 tCO₂e	A100	415,000 sq ft
75	Cim-California Institution For Men	California	22,354 tCO₂e	–—	1,775,481 sq ft
76	Sac-California State Prison,Sacramento	California	21,912 tCO₂e	–—	1,359,429 sq ft
77	Fontana Hospital Campus	California	21,771 tCO₂e	D30	1,547,423 sq ft
78	Health Sciences Campus (Hsc)	California	21,734 tCO₂e	–—	2,506,286 sq ft
79	Chla Main Campus - Ab 802 Reporting	California	21,720 tCO₂e	D36	1,226,164 sq ft
80	Stanford Hospital	California	21,106 tCO₂e	D27	1,125,960 sq ft
81	Cedars Sinai Campus	California	21,043 tCO₂e	A100	4,810,447 sq ft
82	Scv - Apple Park Campus	California	20,042 tCO₂e	–—	4,099,575 sq ft
83	Parnassus	California	20,040 tCO₂e	–—	988,077 sq ft
84	Central Utility Plant	California	19,865 tCO₂e	–—	27,352 sq ft
85	600 W 7Th St (Lax10)	California	19,635 tCO₂e	–—	567,270 sq ft
86	Dart Container Corporation Of California	California	19,083 tCO₂e	–—	1,300,000 sq ft
87	Dennis And Carol Troesh Medical Campus	California	18,935 tCO₂e	D32	998,000 sq ft
88	The Marketplace - Bakersfield (F4 - A)	California	18,772 tCO₂e	–—	100,511 sq ft
89	2425 S Watney Way	California	18,740 tCO₂e	D1	348,000 sq ft
90	Long Beach Memorial / Miller Children'S	California	17,920 tCO₂e	D34	1,075,544 sq ft
91	Cmf-California Medical Facility	California	17,863 tCO₂e	–—	1,187,955 sq ft
92	Santa Clara Campus	California	17,861 tCO₂e	–—	1,034,552 sq ft
93	Bci Iv Otay Logistics Center - Bldg B - Btc I	California	17,467 tCO₂e	D1	198,858 sq ft
94	Rjd-Richard J. Donovan Correctional Facility	California	17,345 tCO₂e	–—	1,610,317 sq ft
95	Ca4011 - Woodland Hills Medical Ctr	California	16,993 tCO₂e	D21	860,309 sq ft
96	Sacramento State University	California	16,958 tCO₂e	–—	3,819,969 sq ft
97	Uc Irvine Health	California	16,895 tCO₂e	B81	1,414,146 sq ft
98	Mhs \| Long Beach \| Medical Center \| Campus	California	16,868 tCO₂e	A91	1,527,571 sq ft
99	Ventura Coastal Visalia	California	16,773 tCO₂e	–—	92,000 sq ft
100	Qualcomm Morehouse	California	16,737 tCO₂e	D2	1,312,860 sq ft

Frequently asked questions

Which California building emits the most carbon?

Coresite Sv8 reported 27,420,510 tCO₂e in its latest AB 802 (Public Resources Code §25402.10) disclosure — the highest in California. AB 802 requires every California commercial building over 50,000 sq ft to report energy use to the CEC annually; the CEC publicly discloses the results statewide.

Dataset updated July 2026 . Source: Building Energy Benchmarking Program (statewide) public disclosure.