Co - Casa De Rosal: Casa De Rosal
Multifamily Housing in Denver, CO · 735 Vrain Street · 80204
At a glance
Co - Casa De Rosal: Casa De Rosal is a 49,341-square-foot multifamily housing building at 735 Vrain Street in Denver, Colorado, built in 2009. In its 2023 Denver benchmarking disclosure it reported an ENERGY STAR score of 64 out of 100 (grade C), a site energy-use intensity of 51.6 kBtu/ft² and 271 tCO₂e of greenhouse-gas emissions. That score is higher than 21% of the 956 scored multifamily housing buildings in Denver.
Energize Denver Building Performance Policy · reporting year 2023
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 64 (band C) |
| Site EUI | 51.6 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 271 tCO₂e |
| GHG intensity | — |
| Electricity | 390,682 kWh |
| Natural gas | 12,145 therms |
| Gross floor area | 49,341 sq ft |
| Source record | denver:3231:2023 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2023latest | 64 | -12 | 51.6 kBtu/ft² | 271 tCO₂e |
| 2022 | 76 | -9 | 49.1 kBtu/ft² | 256 tCO₂e |
| 2021 | 85 | 44.4 kBtu/ft² | 242 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
- 735 Vrain Street
- City
- Denver
- State
- Colorado
- ZIP
- 80204
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 Co - Casa De Rosal: Casa De Rosal 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. Co - Casa De Rosal: Casa De Rosal's ENERGY STAR score of 64 compares with an average of 78 across the 956 that report a score; it scores higher than 21% of them and lower than 77%. Its site EUI of 51.6 kBtu/ft² is roughly in line with the average of 57.0 kBtu/ft² — it uses less energy per square foot than the typical building in that group.
At 49,341 sq ft, it is about 61% below the average floor area of 126,139 sq ft for those buildings. It was built in 2009, 19 years later 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 Co - Casa De Rosal: Casa De Rosal's energy performance changed over time?
BuildingCensus holds 3 Denver disclosures for Co - Casa De Rosal: Casa De Rosal, covering report years 2021–2023. Its ENERGY STAR score went from 85 in 2021 to 64 in 2023 (-21 points); its best year on file was 2021, at 85. Site EUI moved from 44.4 kBtu/ft² (2021) to 51.6 kBtu/ft² (2023), an 16% increase. Reported emissions went from 242 tCO₂e to 271 tCO₂e over the same span (up 12%).
What does an ENERGY STAR score of 64 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 64 means the building performs better than about 64% of its national peers. BuildingCensus bands the score into report-card grades; 64 falls in band C — below median (55–69). It sits 11 points below 75, the threshold for ENERGY STAR certification. 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. Co - Casa De Rosal: Casa De Rosal's 51.6 kBtu/ft² across 49,341 sq ft works out to about 2.5 billion Btu (746 MWh-equivalent) in 2023. The disclosure also reports 390,682 kWh of electricity and 12,145 therms of natural gas for the year.
Which law requires Co - Casa De Rosal: Casa De Rosal to report its energy use?
Co - Casa De Rosal: Casa De Rosal 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:3231:2023). 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
- 1313 S Clarkson St, Denver, Co 80210, Usa· 49,329 sq ft
- Arlington Apartments· 49,310 sq ft · score 99 (A)
- Bayly Lofts· 49,225 sq ft · score 45 (D)
- Nob Hill· 49,224 sq ft · score 67 (C)
- 1100 Cheeseman Park· 49,178 sq ft · score 30 (D)
- Sleek Lofts Apartments· 49,147 sq ft · score 42 (D)
- Multifamily Housing buildings in Denver· 1,108 benchmarked
- All Denver benchmarked buildings· Energize Denver Building Performance Policy
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Frequently asked questions
What is Co - Casa De Rosal: Casa De Rosal's energy grade?
Co - Casa De Rosal: Casa De Rosal scores 64 out of 100 on ENERGY STAR — band C, below median (55–69) — in its 2023 Denver disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does Co - Casa De Rosal: Casa De Rosal use?
Its 2023 site energy-use intensity was 51.6 kBtu/ft² across 49,341 sq ft, including 390,682 kWh of electricity and 12,145 therms of natural gas.
What are Co - Casa De Rosal: Casa De Rosal's carbon emissions?
Co - Casa De Rosal: Casa De Rosal reported 271 tCO₂e of greenhouse-gas emissions for 2023.
Where is Co - Casa De Rosal: Casa De Rosal?
Co - Casa De Rosal: Casa De Rosal is at 735 Vrain Street, in Denver, Colorado 80204.
How big is Co - Casa De Rosal: Casa De Rosal and when was it built?
Co - Casa De Rosal: Casa De Rosal has 49,341 sq ft of gross floor area, as reported in its 2023 disclosure. The disclosure lists 2009 as its year built. It is classed as multifamily housing.
Is Co - Casa De Rosal: Casa De Rosal 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, “Co - Casa De Rosal: Casa De Rosal, Denver, Colorado — 2023 benchmarking disclosure”, https://buildingcensus.com/buildings/denver/co-casa-de-rosal-casa-de-rosal-c7805d7a (data as of July 9, 2026).