Least efficient large buildings in Berkeley

Bottom 100 ENERGY STAR scores among buildings over 50,000 sq ft under BESO (BMC Chapter 19.81) — the penalty-exposure watchlist. Flip side: most efficient →

Bottom 100 by ENERGY STAR score

#	Building	City	Score	Site EUI	Floor area
1	The Berk on College	Berkeley	D29	40.2 kBtu/ft²	65,750 sq ft
2	Regent Street Medical Office Building and Care Center	Berkeley	D30	100.4 kBtu/ft²	57,429 sq ft
3	Harriet Tubman Terrace Apartments	Berkeley	D50	49.0 kBtu/ft²	62,823 sq ft
4	Alta Bates Summit Medical Center - Ashby	Berkeley	D54	255.3 kBtu/ft²	457,008 sq ft
5	Avalon Berkeley	Berkeley	C59	38.6 kBtu/ft²	94,083 sq ft
6	Berkeley Central	Berkeley	C62	37.3 kBtu/ft²	166,731 sq ft
7	2600 Tenth (ZMC)	Berkeley	C63	64.8 kBtu/ft²	121,172 sq ft
8	REI Walgreens Center	Berkeley	C66	53.9 kBtu/ft²	63,075 sq ft
9	Wells Fargo Building	Berkeley	C67	54.3 kBtu/ft²	68,396 sq ft
10	Higby	Berkeley	C69	45.2 kBtu/ft²	82,921 sq ft
11	Great Western Bldg	Berkeley	B70	60.3 kBtu/ft²	161,734 sq ft
12	1947 Center St	Berkeley	B83	58.5 kBtu/ft²	98,800 sq ft
13	Berkeley Civic Center	Berkeley	B84	47.5 kBtu/ft²	89,250 sq ft
14	Residence Inn Hotel Dwtn.	Berkeley	A86	61.3 kBtu/ft²	234,141 sq ft
15	Ocean View Gardens	Berkeley	A86	48.8 kBtu/ft²	51,569 sq ft
16	Weatherford BMW	Berkeley	A87	21.4 kBtu/ft²	87,328 sq ft
17	La Quinta Inn by Wyndham Berkeley	Berkeley	A88	45.6 kBtu/ft²	60,000 sq ft
18	Herrick Hospital Campus	Berkeley	A90	148.9 kBtu/ft²	302,236 sq ft
19	New Californian	Berkeley	A91	46.1 kBtu/ft²	140,900 sq ft
20	Berkeley Bowl West	Berkeley	A91	160.3 kBtu/ft²	100,965 sq ft
21	Berkeley Apartments - Acton Courtyard	Berkeley	A91	35.4 kBtu/ft²	54,152 sq ft
22	Parker Apartments	Berkeley	A92	32.9 kBtu/ft²	129,851 sq ft
23	1122 U	Berkeley	A94	29.5 kBtu/ft²	73,294 sq ft
24	The Graduate Berkeley Hotel	Berkeley	A95	61.3 kBtu/ft²	70,000 sq ft
25	Doubletree Hotel & Executive Meeting Center	Berkeley	A96	53.9 kBtu/ft²	249,109 sq ft
26	Bridge Housing - Berkeley Way	Berkeley	A96	23.0 kBtu/ft²	104,525 sq ft
27	Ed Roberts Campus	Berkeley	A96	41.7 kBtu/ft²	88,000 sq ft
28	Berkeley Town House	Berkeley	A96	30.9 kBtu/ft²	65,214 sq ft
29	Modera Berkeley	Berkeley	A97	26.5 kBtu/ft²	186,527 sq ft
30	Parker Plaza	Berkeley	A97	19.7 kBtu/ft²	74,062 sq ft
31	Helios Corner	Berkeley	A97	15.4 kBtu/ft²	68,594 sq ft
32	Fourth & U	Berkeley	A98	26.9 kBtu/ft²	208,284 sq ft
33	2131 UNIVERSITY AVE	Berkeley	A98	24.7 kBtu/ft²	186,527 sq ft
34	The Aquatic III	Berkeley	A98	25.0 kBtu/ft²	135,136 sq ft
35	Redwood Gardens Apartments	Berkeley	A98	21.4 kBtu/ft²	125,813 sq ft
36	Stonefire Berkeley	Berkeley	A98	28.4 kBtu/ft²	88,850 sq ft
37	Berkeley Apartments - Fine Arts Building	Berkeley	A98	41.9 kBtu/ft²	58,315 sq ft
38	The Den	Berkeley	A98	25.2 kBtu/ft²	54,788 sq ft
39	K Street Flats - All Buildings	Berkeley	A99	25.3 kBtu/ft²	159,546 sq ft
40	Varsity Berkeley	Berkeley	A99	34.2 kBtu/ft²	95,066 sq ft
41	The Dwight	Berkeley	A99	24.1 kBtu/ft²	90,717 sq ft
42	The Addison Apartments	Berkeley	A99	20.2 kBtu/ft²	83,535 sq ft
43	University Park Apartments	Berkeley	A99	34.1 kBtu/ft²	57,035 sq ft
44	Gaia Apartments	Berkeley	A99	37.7 kBtu/ft²	53,911 sq ft
45	1500 San Pablo Ave	Berkeley	A100	19.8 kBtu/ft²	261,272 sq ft
46	Identity Logan Park Apartments	Berkeley	A100	15.1 kBtu/ft²	182,977 sq ft
47	2580 Bancroft Way	Berkeley	A100	20.9 kBtu/ft²	172,522 sq ft
48	Identity Logan Park II Apartments	Berkeley	A100	17.3 kBtu/ft²	92,258 sq ft
49	Hub Bancroft	Berkeley	A100	16.7 kBtu/ft²	81,983 sq ft
50	Strawberry Creek Lodge	Berkeley	A100	17.1 kBtu/ft²	71,017 sq ft
51	Addison Arts Apartments	Berkeley	A100	16.2 kBtu/ft²	70,306 sq ft
52	Hillside Village	Berkeley	A100	22.0 kBtu/ft²	70,048 sq ft
53	Berkeley Park Apartments	Berkeley	A100	42.4 kBtu/ft²	67,410 sq ft
54	Kaiser Medical Office Building	Berkeley	A100	39.3 kBtu/ft²	66,346 sq ft
55	2033 BLAKE ST	Berkeley	A100	22.0 kBtu/ft²	61,827 sq ft
56	SPECTRA SOUTHSIDE	Berkeley	A100	25.8 kBtu/ft²	60,866 sq ft
57	Aquatic Ashby	Berkeley	A100	23.5 kBtu/ft²	60,699 sq ft
58	2100 Milvia St	Berkeley	A100	19.6 kBtu/ft²	58,302 sq ft
59	MB Apartments	Berkeley	A100	22.9 kBtu/ft²	57,572 sq ft
60	The Metropolitan	Berkeley	A100	35.0 kBtu/ft²	54,319 sq ft
61	Everest Properties	Berkeley	A100	23.1 kBtu/ft²	52,600 sq ft
62	Ashby Lofts Apartments	Berkeley	A100	12.7 kBtu/ft²	51,365 sq ft
63	Stadium Place	Berkeley	A100	23.7 kBtu/ft²	51,320 sq ft
64	URSA Apartments	Berkeley	A100	11.0 kBtu/ft²	50,965 sq ft

Frequently asked questions

Which large Berkeley buildings have the worst energy grades?

The Berk on College reports the lowest ENERGY STAR score (29) among Berkeley buildings over 50,000 sq ft. BESO requires energy assessments and benchmarking for buildings over 15,000 sq ft, with compliance enforced through the city's assessment cycles.

Does a low score mean the building breaks the law?

No. A low ENERGY STAR score is a national efficiency percentile, not a violation. It does correlate with exposure under building-performance standards (carbon caps, retrofit mandates), which is why owners, lenders and retrofit contractors watch these lists.

Dataset updated July 2026 . Source: Building Energy Saving Ordinance public disclosure.