Casa Cordova Apartments
Multifamily Housing in Denver, CO · 15 S. Clarkson St. · 80209
At a glance
Casa Cordova Apartments is a 53,337-square-foot multifamily housing building at 15 S. Clarkson St. in Denver, Colorado, built in 1970. In its 2023 Denver benchmarking disclosure it reported an ENERGY STAR score of 88 out of 100 (grade A), a site energy-use intensity of 82.5 kBtu/ft² and 308 tCO₂e of greenhouse-gas emissions. That score is higher than 54% of the 956 scored multifamily housing buildings in Denver.
Energize Denver Building Performance Policy · reporting year 2023
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 88 (band A) |
| Site EUI | 82.5 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 308 tCO₂e |
| GHG intensity | — |
| Electricity | 224,189 kWh |
| Natural gas | 36,328 therms |
| Gross floor area | 53,337 sq ft |
| Source record | denver:3397:2023 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2023latest | 88 | +5 | 82.5 kBtu/ft² | 308 tCO₂e |
| 2022 | 83 | -4 | 95.5 kBtu/ft² | 311 tCO₂e |
| 2021 | 87 | 85.5 kBtu/ft² | 302 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
- 15 S. Clarkson St.
- City
- Denver
- State
- Colorado
- ZIP
- 80209
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 Cordova 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 Cordova Apartments's ENERGY STAR score of 88 compares with an average of 78 across the 956 that report a score; it scores higher than 54% of them and lower than 42%. Its site EUI of 82.5 kBtu/ft² is about 45% above the average of 57.0 kBtu/ft² — it uses more energy per square foot than the typical building in that group.
At 53,337 sq ft, it is about 58% below the average floor area of 126,139 sq ft for those buildings. It was built in 1970, 20 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 Cordova Apartments's energy performance changed over time?
BuildingCensus holds 3 Denver disclosures for Casa Cordova Apartments, covering report years 2021–2023. Its ENERGY STAR score went from 87 in 2021 to 88 in 2023 (+1 points). Site EUI moved from 85.5 kBtu/ft² (2021) to 82.5 kBtu/ft² (2023), a 4% decrease. Reported emissions went from 302 tCO₂e to 308 tCO₂e over the same span (up 2%).
What does an ENERGY STAR score of 88 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 88 means the building performs better than about 88% of its national peers. BuildingCensus bands the score into report-card grades; 88 falls in band A — high performer (85–100). 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 Cordova Apartments's 82.5 kBtu/ft² across 53,337 sq ft works out to about 4.4 billion Btu (1,290 MWh-equivalent) in 2023. The disclosure also reports 224,189 kWh of electricity and 36,328 therms of natural gas for the year.
Which law requires Casa Cordova Apartments to report its energy use?
Casa Cordova 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:3397:2023). 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
- 825 Dahlia· 53,288 sq ft · score 95 (A)
- Fairview Place Residences· 53,094 sq ft · score 94 (A)
- Highland Bridge Lofts· 52,980 sq ft · score 98 (A)
- Zocalo Condos· 52,950 sq ft · score 98 (A)
- The Clarkson (Cl576)· 52,883 sq ft · score 98 (A)
- 191 Clayton Lane· 52,856 sq ft · score 88 (A)
- Multifamily Housing buildings in Denver· 1,108 benchmarked
- All Denver benchmarked buildings· Energize Denver Building Performance Policy
- Most efficient large buildings in Denver
- Least efficient large buildings in Denver
- Biggest emitters in Denver
Frequently asked questions
What is Casa Cordova Apartments's energy grade?
Casa Cordova Apartments scores 88 out of 100 on ENERGY STAR — band A, high performer (85–100) — in its 2023 Denver disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does Casa Cordova Apartments use?
Its 2023 site energy-use intensity was 82.5 kBtu/ft² across 53,337 sq ft, including 224,189 kWh of electricity and 36,328 therms of natural gas.
What are Casa Cordova Apartments's carbon emissions?
Casa Cordova Apartments reported 308 tCO₂e of greenhouse-gas emissions for 2023.
Where is Casa Cordova Apartments?
Casa Cordova Apartments is at 15 S. Clarkson St., in Denver, Colorado 80209.
How big is Casa Cordova Apartments and when was it built?
Casa Cordova Apartments has 53,337 sq ft of gross floor area, as reported in its 2023 disclosure. The disclosure lists 1970 as its year built. It is classed as multifamily housing.
Is Casa Cordova 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 Cordova Apartments, Denver, Colorado — 2023 benchmarking disclosure”, https://buildingcensus.com/buildings/denver/casa-cordova-apartments-42cd3830 (data as of July 9, 2026).