Casa Del Sol Apartments
Multifamily Housing in Denver, CO · 860 Clermont Street · 80220
At a glance
Casa Del Sol Apartments is a 92,102-square-foot multifamily housing building at 860 Clermont Street in Denver, Colorado, built in 1971. In its 2023 Denver benchmarking disclosure it reported an ENERGY STAR score of 78 out of 100 (grade B), a site energy-use intensity of 81.6 kBtu/ft² and 566 tCO₂e of greenhouse-gas emissions. That score is higher than 36% of the 956 scored multifamily housing buildings in Denver.
Energize Denver Building Performance Policy · reporting year 2023
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 78 (band B) |
| Site EUI | 81.6 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 566 tCO₂e |
| GHG intensity | — |
| Electricity | 479,184 kWh |
| Natural gas | 58,820 therms |
| Gross floor area | 92,102 sq ft |
| Source record | denver:5541:2023 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2023latest | 78 | -3 | 81.6 kBtu/ft² | 566 tCO₂e |
| 2022 | 81 | +3 | 85.0 kBtu/ft² | 572 tCO₂e |
| 2021 | 78 | 86.0 kBtu/ft² | 590 tCO₂e |
Compliance context
Energize Denver Building Performance Policy
Energize Denver sets energy-use (EUI) targets for buildings of 25,000+ sq ft — for most buildings an interim target in 2028 and a final target in 2032 — with civil penalties of roughly $0.15–0.35 per kBtu over target for non-compliance.
Ownership
No owning organisation shown. Names of private individuals in the disclosure are not published here.
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Location
- Address
- 860 Clermont Street
- City
- Denver
- State
- Colorado
- ZIP
- 80220
Within ~1 km
Nearby benchmarked buildings
This source publishes no coordinates, so nearby buildings can't be resolved yet.
See also: most efficient in Denver · biggest emitters
How does Casa Del Sol Apartments compare with other multifamily housing buildings in Denver?
The latest disclosures cover 1,108 multifamily housing buildings in Denver, out of 3,287 buildings citywide. Casa Del Sol Apartments's ENERGY STAR score of 78 compares with an average of 78 across the 956 that report a score; it scores higher than 36% of them and lower than 62%. Its site EUI of 81.6 kBtu/ft² is about 43% above the average of 57.0 kBtu/ft² — it uses more energy per square foot than the typical building in that group.
At 92,102 sq ft, it is about 27% below the average floor area of 126,139 sq ft for those buildings. It was built in 1971, 19 years earlier than the group's average year built (1990). Across all 24 jurisdictions BuildingCensus covers, the 59,945 multifamily housing buildings average an ENERGY STAR score of 70 and a site EUI of 59.0 kBtu/ft².
How has Casa Del Sol Apartments's energy performance changed over time?
BuildingCensus holds 3 Denver disclosures for Casa Del Sol Apartments, covering report years 2021–2023. Its ENERGY STAR score was 78 in both 2021 and 2023. Site EUI moved from 86.0 kBtu/ft² (2021) to 81.6 kBtu/ft² (2023), a 5% decrease. Reported emissions went from 590 tCO₂e to 566 tCO₂e over the same span (down 4%).
What does an ENERGY STAR score of 78 mean?
ENERGY STAR scores run from 1 to 100 and are computed by the EPA's Portfolio Manager as a percentile against similar buildings nationwide, adjusted for climate, size and use: a score of 78 means the building performs better than about 78% of its national peers. BuildingCensus bands the score into report-card grades; 78 falls in band B — above median (70–84). Scores of 75 or higher meet the threshold for ENERGY STAR certification; certification itself is a separate, verified application that the disclosure does not record. In Denver, 54% of scored buildings are at 75 or above.
Site energy-use intensity (EUI) is the energy a building uses on site in a year divided by its floor area, in thousand Btu per square foot — lower is more efficient. Casa Del Sol Apartments's 81.6 kBtu/ft² across 92,102 sq ft works out to about 7.5 billion Btu (2,203 MWh-equivalent) in 2023. The disclosure also reports 479,184 kWh of electricity and 58,820 therms of natural gas for the year.
Which law requires Casa Del Sol Apartments to report its energy use?
Casa Del Sol Apartments reports under the Energize Denver Building Performance Policy, the legal basis of Denver's Energize Denver Benchmarking program, which publishes each covered building's annual benchmarking results. The record shown here is the report-year 2023 disclosure (source record denver:5541:2023). Energize Denver sets energy-use (EUI) targets for buildings of 25,000+ sq ft — for most buildings an interim target in 2028 and a final target in 2032 — with civil penalties of roughly $0.15–0.35 per kBtu over target for non-compliance.
More multifamily housing buildings in Denver
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- Franklin Lofts· 91,821 sq ft · score 100 (A)
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- Courthouse Square - Pk· 91,624 sq ft · score 72 (B)
- The Point Owners Association· 91,225 sq ft · score 65 (C)
- 1601 Colorado (473)· 91,052 sq ft · score 38 (D)
- Multifamily Housing buildings in Denver· 1,108 benchmarked
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Frequently asked questions
What is Casa Del Sol Apartments's energy grade?
Casa Del Sol Apartments scores 78 out of 100 on ENERGY STAR — band B, above median (70–84) — in its 2023 Denver disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does Casa Del Sol Apartments use?
Its 2023 site energy-use intensity was 81.6 kBtu/ft² across 92,102 sq ft, including 479,184 kWh of electricity and 58,820 therms of natural gas.
What are Casa Del Sol Apartments's carbon emissions?
Casa Del Sol Apartments reported 566 tCO₂e of greenhouse-gas emissions for 2023.
Where is Casa Del Sol Apartments?
Casa Del Sol Apartments is at 860 Clermont Street, in Denver, Colorado 80220.
How big is Casa Del Sol Apartments and when was it built?
Casa Del Sol Apartments has 92,102 sq ft of gross floor area, as reported in its 2023 disclosure. The disclosure lists 1971 as its year built. It is classed as multifamily housing.
Is Casa Del Sol Apartments covered by the Energize Denver Building Performance Policy?
Yes — it appears in the 2023 Energize Denver Benchmarking disclosure, which lists the buildings reporting under the Energize Denver Building Performance Policy.
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About this data
Source: Energize Denver Benchmarking (Energize Denver Building Performance Policy), as published July 9, 2026. See the methodology for how records are matched, cleaned and scored.
Cite as: BuildingCensus, “Casa Del Sol Apartments, Denver, Colorado — 2023 benchmarking disclosure”, https://buildingcensus.com/buildings/denver/casa-del-sol-apartments-12c0dbf5 (data as of July 9, 2026).