Mulroy
Multifamily Housing in Denver, CO · 3550 W 13Th Ave · 80204
At a glance
Mulroy is a 49,019-square-foot multifamily housing building at 3550 W 13Th Ave in Denver, Colorado, built in 1975. In its 2023 Denver benchmarking disclosure it reported an ENERGY STAR score of 49 out of 100 (grade D), a site energy-use intensity of 87.2 kBtu/ft² and 342 tCO₂e of greenhouse-gas emissions. That score is higher than 13% of the 956 scored multifamily housing buildings in Denver.
Energize Denver Building Performance Policy · reporting year 2023
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 49 (band D) |
| Site EUI | 87.2 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 342 tCO₂e |
| GHG intensity | — |
| Electricity | 329,462 kWh |
| Natural gas | 31,525 therms |
| Gross floor area | 49,019 sq ft |
| Source record | denver:5394:2023 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2023latest | 49 | +6 | 87.2 kBtu/ft² | 342 tCO₂e |
| 2022 | 43 | 94.2 kBtu/ft² | 368 tCO₂e | |
| 2021 | — | 67.9 kBtu/ft² | 396 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
- 3550 W 13Th Ave
- 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 Mulroy 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. Mulroy's ENERGY STAR score of 49 compares with an average of 78 across the 956 that report a score; it scores higher than 13% of them and lower than 87%. Its site EUI of 87.2 kBtu/ft² is about 53% above the average of 57.0 kBtu/ft² — it uses more energy per square foot than the typical building in that group.
At 49,019 sq ft, it is about 61% below the average floor area of 126,139 sq ft for those buildings. It was built in 1975, 15 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 Mulroy's energy performance changed over time?
BuildingCensus holds 3 Denver disclosures for Mulroy, covering report years 2021–2023. Its ENERGY STAR score went from 43 in 2022 to 49 in 2023 (+6 points). Site EUI moved from 67.9 kBtu/ft² (2021) to 87.2 kBtu/ft² (2023), an 28% increase. Reported emissions went from 396 tCO₂e to 342 tCO₂e over the same span (down 14%).
What does an ENERGY STAR score of 49 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 49 means the building performs better than about 49% of its national peers. BuildingCensus bands the score into report-card grades; 49 falls in band D — lowest band (1–54). It sits 26 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. Mulroy's 87.2 kBtu/ft² across 49,019 sq ft works out to about 4.3 billion Btu (1,253 MWh-equivalent) in 2023. The disclosure also reports 329,462 kWh of electricity and 31,525 therms of natural gas for the year.
Which law requires Mulroy to report its energy use?
Mulroy 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:5394:2023). 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
- Wash Park Place· 49,000 sq ft · score 100 (A)
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- Camelot Apartments· 48,790 sq ft
- Lofts At Central Park Hoa· 48,589 sq ft · score 100 (A)
- Park Sedona Apartments· 48,580 sq ft · score 100 (A)
- Strada Flats· 48,368 sq ft · score 100 (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 Mulroy's energy grade?
Mulroy scores 49 out of 100 on ENERGY STAR — band D, lowest band (1–54) — in its 2023 Denver disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does Mulroy use?
Its 2023 site energy-use intensity was 87.2 kBtu/ft² across 49,019 sq ft, including 329,462 kWh of electricity and 31,525 therms of natural gas.
What are Mulroy's carbon emissions?
Mulroy reported 342 tCO₂e of greenhouse-gas emissions for 2023.
Where is Mulroy?
Mulroy is at 3550 W 13Th Ave, in Denver, Colorado 80204.
How big is Mulroy and when was it built?
Mulroy has 49,019 sq ft of gross floor area, as reported in its 2023 disclosure. The disclosure lists 1975 as its year built. It is classed as multifamily housing.
Is Mulroy 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, “Mulroy, Denver, Colorado — 2023 benchmarking disclosure”, https://buildingcensus.com/buildings/denver/mulroy-f16adf17 (data as of July 9, 2026).