Bluff Lake Apartments
Multifamily Housing in Denver, CO · 10425 & 10495 E. 31St Avenue · 80238
At a glance
Bluff Lake Apartments is a 109,867-square-foot multifamily housing building at 10425 & 10495 E. 31St Avenue in Denver, Colorado, built in 2012. In its 2023 Denver benchmarking disclosure it reported an ENERGY STAR score of 66 out of 100 (grade C), a site energy-use intensity of 55.5 kBtu/ft² and 524 tCO₂e of greenhouse-gas emissions. That score is higher than 24% of the 956 scored multifamily housing buildings in Denver.
Energize Denver Building Performance Policy · reporting year 2023
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 66 (band C) |
| Site EUI | 55.5 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 524 tCO₂e |
| GHG intensity | — |
| Electricity | 576,128 kWh |
| Natural gas | 41,300 therms |
| Gross floor area | 109,867 sq ft |
| Source record | denver:1759:2023 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2023latest | 66 | +17 | 55.5 kBtu/ft² | 524 tCO₂e |
| 2022 | 49 | -19 | 62.8 kBtu/ft² | 617 tCO₂e |
| 2021 | 68 | 55.6 kBtu/ft² | 546 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
- 10425 & 10495 E. 31St Avenue
- City
- Denver
- State
- Colorado
- ZIP
- 80238
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 Bluff Lake 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. Bluff Lake Apartments's ENERGY STAR score of 66 compares with an average of 78 across the 956 that report a score; it scores higher than 24% of them and lower than 75%. Its site EUI of 55.5 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 109,867 sq ft, it is about 13% below the average floor area of 126,139 sq ft for those buildings. It was built in 2012, 22 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 Bluff Lake Apartments's energy performance changed over time?
BuildingCensus holds 3 Denver disclosures for Bluff Lake Apartments, covering report years 2021–2023. Its ENERGY STAR score went from 68 in 2021 to 66 in 2023 (-2 points); its best year on file was 2021, at 68. Site EUI moved from 55.6 kBtu/ft² (2021) to 55.5 kBtu/ft² (2023), a 0% decrease. Reported emissions went from 546 tCO₂e to 524 tCO₂e over the same span (down 4%).
What does an ENERGY STAR score of 66 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 66 means the building performs better than about 66% of its national peers. BuildingCensus bands the score into report-card grades; 66 falls in band C — below median (55–69). It sits 9 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. Bluff Lake Apartments's 55.5 kBtu/ft² across 109,867 sq ft works out to about 6.1 billion Btu (1,787 MWh-equivalent) in 2023. The disclosure also reports 576,128 kWh of electricity and 41,300 therms of natural gas for the year.
Which law requires Bluff Lake Apartments to report its energy use?
Bluff Lake 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:1759:2023). 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
- Steelbridge· 109,522 sq ft · EUI 51.2 kBtu/ft²
- Denver Tower· 109,360 sq ft · score 94 (A)
- Parkway Towers· 108,921 sq ft · score 81 (B)
- Neusteters Building Condominium Association Inc· 108,000 sq ft
- Kabin· 107,919 sq ft · score 91 (A)
- Park Avenue West (Pa550)· 107,542 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 Bluff Lake Apartments's energy grade?
Bluff Lake Apartments scores 66 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 Bluff Lake Apartments use?
Its 2023 site energy-use intensity was 55.5 kBtu/ft² across 109,867 sq ft, including 576,128 kWh of electricity and 41,300 therms of natural gas.
What are Bluff Lake Apartments's carbon emissions?
Bluff Lake Apartments reported 524 tCO₂e of greenhouse-gas emissions for 2023.
Where is Bluff Lake Apartments?
Bluff Lake Apartments is at 10425 & 10495 E. 31St Avenue, in Denver, Colorado 80238.
How big is Bluff Lake Apartments and when was it built?
Bluff Lake Apartments has 109,867 sq ft of gross floor area, as reported in its 2023 disclosure. The disclosure lists 2012 as its year built. It is classed as multifamily housing.
Is Bluff Lake 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, “Bluff Lake Apartments, Denver, Colorado — 2023 benchmarking disclosure”, https://buildingcensus.com/buildings/denver/bluff-lake-apartments-c10203af (data as of July 9, 2026).