Least efficient large buildings in Denver

Bottom 100 ENERGY STAR scores among buildings over 50,000 sq ft under Energize Denver Building Performance Policy — the penalty-exposure watchlist. Flip side: most efficient →

Bottom 100 by ENERGY STAR score

#	Building	City	Score	Site EUI	Floor area
1	Denver Toy B01/10101087/1425 Champa Street/Denver/Co	Denver	D1	181.7 kBtu/ft²	415,978 sq ft
2	Mile High 1	Denver	D1	146.8 kBtu/ft²	336,458 sq ft
3	One Cheesman Place Condominiums - 1201 Williams	Denver	D1	180.1 kBtu/ft²	95,537 sq ft
4	Denver	Denver	D1	146.1 kBtu/ft²	70,254 sq ft
5	Culinary Building	Denver	D2	119.1 kBtu/ft²	334,550 sq ft
6	Us Motel Downtown, Inc.	Denver	D3	132.7 kBtu/ft²	74,195 sq ft
7	Morningstar At Observatory Park	Denver	D3	75.4 kBtu/ft²	69,270 sq ft
8	Frontier Hangar	Denver	D4	243.3 kBtu/ft²	170,833 sq ft
9	4880 Havana Office (Building A)	Denver	D5	170.0 kBtu/ft²	76,624 sq ft
10	1600 Glenarm Place	Denver	D6	94.8 kBtu/ft²	412,143 sq ft
11	26425-Village At Lowry	Denver	D6	78.7 kBtu/ft²	151,300 sq ft
12	Chamber Lofts	Denver	D7	101.8 kBtu/ft²	51,070 sq ft
13	3770	Denver	D8	71.8 kBtu/ft²	89,728 sq ft
14	100 Park	Denver	D9	82.8 kBtu/ft²	159,782 sq ft
15	Venue On 16Th - Co (Vh30)	Denver	D9	90.7 kBtu/ft²	155,744 sq ft
16	Clayton Lane Denver Reporting	Denver	D9	103.3 kBtu/ft²	124,429 sq ft
17	Temple Emanuel	Denver	D9	92.1 kBtu/ft²	87,000 sq ft
18	Jp - Jp Plaza - 1601 Blake St.	Denver	D9	99.8 kBtu/ft²	62,825 sq ft
19	Colburn Hotel & Apartments	Denver	D9	96.1 kBtu/ft²	55,652 sq ft
20	A+Y Investments, Llc	Denver	D9	94.5 kBtu/ft²	50,000 sq ft
21	Grant Beacon	Denver	D10	69.2 kBtu/ft²	83,587 sq ft
22	Frontier Airlines Hq	Denver	D10	161.5 kBtu/ft²	75,000 sq ft
23	Lumina Apartments	Denver	D10	74.6 kBtu/ft²	75,000 sq ft
24	Highland Place	Denver	D10	78.3 kBtu/ft²	60,000 sq ft
25	Psh I-70 & Federal (4745 Federal Blvd)	Denver	D10	52.1 kBtu/ft²	59,322 sq ft
26	Ice House Condominiums	Denver	D11	67.5 kBtu/ft²	203,570 sq ft
27	Adrex Diversified I Master Tenant Llc	Denver	D12	165.7 kBtu/ft²	144,078 sq ft
28	Denver School Of The Arts - South Campus	Denver	D13	97.8 kBtu/ft²	168,340 sq ft
29	302 Denver East Co Hoi	Denver	D13	131.2 kBtu/ft²	159,573 sq ft
30	Fedex Building Federal Cargo A	Denver	D14	171.0 kBtu/ft²	104,700 sq ft
31	Doubletree Denver-Cherry Creek	Denver	D14	169.9 kBtu/ft²	87,596 sq ft
32	Levy Holdings- Wh2	Denver	D15	72.5 kBtu/ft²	95,263 sq ft
33	Briargate At 17Th	Denver	D15	75.2 kBtu/ft²	50,000 sq ft
34	50830-Brookdale Parkplace	Denver	D16	94.1 kBtu/ft²	240,607 sq ft
35	The Stella - 5190 N Broadway, Denver, Co 80216, Usa	Denver	D16	79.3 kBtu/ft²	156,136 sq ft
36	Den Airport - Joint Use Cargo	Denver	D16	154.2 kBtu/ft²	122,828 sq ft
37	Dsst Stapleton	Denver	D16	68.3 kBtu/ft²	108,002 sq ft
38	City Square Apartments, Llc	Denver	D16	104.6 kBtu/ft²	105,336 sq ft
39	4350 Kearney St	Denver	D16	90.7 kBtu/ft²	92,160 sq ft
40	Remington (Strive Prep - Sunnyside)	Denver	D16	100.6 kBtu/ft²	50,167 sq ft
41	Adventhealth Porter	Denver	D17	294.8 kBtu/ft²	735,291 sq ft
42	Sandoval Campus Bldg #2	Denver	D17	91.2 kBtu/ft²	83,084 sq ft
43	Crossville Studios	Denver	D17	63.4 kBtu/ft²	80,000 sq ft
44	North Colorado Station	Denver	D17	69.7 kBtu/ft²	79,344 sq ft
45	Avenida Del Sol	Denver	D17	62.4 kBtu/ft²	61,795 sq ft
46	Scott System, Inc	Denver	D17	69.8 kBtu/ft²	56,796 sq ft
47	Polaris At Ebert	Denver	D17	107.3 kBtu/ft²	55,250 sq ft
48	200 S University Blvd	Denver	D17	35.2 kBtu/ft²	55,000 sq ft
49	Westfield - Centerpark C	Denver	D18	64.5 kBtu/ft²	176,800 sq ft
50	Fca Us Llc - Denver Pdc	Denver	D18	79.6 kBtu/ft²	129,236 sq ft
51	One Union Station	Denver	D19	118.8 kBtu/ft²	116,125 sq ft
52	The Elisabetta - 5120 N Broadway, Denver, Co 80216, Usa	Denver	D19	56.9 kBtu/ft²	84,015 sq ft
53	Clay Street Residences	Denver	D19	70.3 kBtu/ft²	56,118 sq ft
54	2375 E 1St Ave - Whole Foods	Denver	D19	330.8 kBtu/ft²	53,126 sq ft
55	Buerger Brother Lofts	Denver	D19	95.2 kBtu/ft²	50,320 sq ft
56	Denver Co Tj	Denver	D20	140.1 kBtu/ft²	130,445 sq ft
57	Tangent (Tn003)	Denver	D20	79.1 kBtu/ft²	123,180 sq ft
58	2399 Blake St	Denver	D20	107.2 kBtu/ft²	70,262 sq ft
59	St. John'S Church In The Wilderness	Denver	D20	76.0 kBtu/ft²	70,000 sq ft
60	Samuels	Denver	D20	88.6 kBtu/ft²	65,324 sq ft
61	Schmitt Elementary	Denver	D20	110.5 kBtu/ft²	58,696 sq ft
62	Brentwood Tower Llc	Denver	D20	125.9 kBtu/ft²	56,804 sq ft
63	801 16Th St	Denver	D20	70.8 kBtu/ft²	56,250 sq ft
64	Ashley Elementary	Denver	D20	101.5 kBtu/ft²	54,264 sq ft
65	Central Presbyterian Church	Denver	D20	55.9 kBtu/ft²	52,083 sq ft
66	The Crossing Apartment Homes	Denver	D21	134.1 kBtu/ft²	162,237 sq ft
67	Cottage Hills	Denver	D21	75.3 kBtu/ft²	156,020 sq ft
68	The Reserves At Green Valley Ranch Ii (Gr526)	Denver	D21	69.4 kBtu/ft²	85,311 sq ft
69	Chestnut Ridge (Ch04)	Denver	D21	128.1 kBtu/ft²	84,008 sq ft
70	Bt46270-5301 Peoria Street	Denver	D22	57.7 kBtu/ft²	307,074 sq ft
71	3200&3600 Denver Dt Co Lem&Ach	Denver	D22	192.2 kBtu/ft²	224,653 sq ft
72	The Midland Condominiums	Denver	D22	55.4 kBtu/ft²	88,943 sq ft
73	Westerly Creek Elementary School	Denver	D22	68.4 kBtu/ft²	81,728 sq ft
74	Tamai Tower	Denver	D23	81.3 kBtu/ft²	165,164 sq ft
75	Jasmine Condominiums Se Bldg	Denver	D23	147.8 kBtu/ft²	120,000 sq ft
76	1177 Race St, Denver, Co 80206	Denver	D23	96.2 kBtu/ft²	80,000 sq ft
77	756 S. Jason Street	Denver	D23	76.9 kBtu/ft²	72,364 sq ft
78	Bmw Of Denver	Denver	D23	90.5 kBtu/ft²	69,450 sq ft
79	The Heights Post Acute (Au032)	Denver	D23	123.1 kBtu/ft²	54,000 sq ft
80	Imt Lowry	Denver	D24	77.1 kBtu/ft²	195,408 sq ft
81	Gateway North	Denver	D24	60.7 kBtu/ft²	101,906 sq ft
82	8207-Denver, Co	Denver	D24	77.8 kBtu/ft²	85,400 sq ft
83	Omar D. Blair	Denver	D24	72.0 kBtu/ft²	78,979 sq ft
84	Cv 49Th And Race Property Owner Llc	Denver	D24	42.8 kBtu/ft²	62,648 sq ft
85	One City Block	Denver	D25	66.3 kBtu/ft²	256,805 sq ft
86	Delgado	Denver	D25	81.5 kBtu/ft²	91,641 sq ft
87	Park Hill United Methodist Church	Denver	D25	72.8 kBtu/ft²	67,000 sq ft
88	Renew On Stout	Denver	D26	54.8 kBtu/ft²	179,962 sq ft
89	Barnum Elementary	Denver	D26	98.5 kBtu/ft²	73,936 sq ft
90	Balfour At Riverfront Park	Denver	D27	47.1 kBtu/ft²	430,352 sq ft
91	999 Offices Llc - Prism (Ff030)	Denver	D27	103.1 kBtu/ft²	109,088 sq ft
92	Fedex 9950	Denver	D27	69.1 kBtu/ft²	105,800 sq ft
93	Whittier	Denver	D27	83.0 kBtu/ft²	51,544 sq ft
94	Noel	Denver	D28	71.9 kBtu/ft²	143,965 sq ft
95	Academia Ana Marie Sandoval	Denver	D28	67.0 kBtu/ft²	66,404 sq ft
96	Albion Court Holdings, L.P.	Denver	D28	99.9 kBtu/ft²	62,976 sq ft
97	Art District Flats (Rt144)	Denver	D28	76.5 kBtu/ft²	62,353 sq ft
98	Johnson Elementary	Denver	D28	109.7 kBtu/ft²	53,682 sq ft
99	Stedman	Denver	D28	98.3 kBtu/ft²	52,243 sq ft
100	1600 Stout	Denver	D29	80.9 kBtu/ft²	195,426 sq ft

Frequently asked questions

Which large Denver buildings have the worst energy grades?

Denver Toy B01/10101087/1425 Champa Street/Denver/Co reports the lowest ENERGY STAR score (1) among Denver buildings over 50,000 sq ft. Energize Denver sets EUI performance targets for buildings over 25,000 sq ft with interim deadlines through 2030 and civil penalties (around $0.30–0.70 per kBtu over target) for non-compliance.

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: Energize Denver Benchmarking public disclosure.