Sienna Sloan'S Lake (Sn378)
Multifamily Housing in Denver, CO · 4015 W 16Th Ave · 80204
At a glance
Sienna Sloan'S Lake (Sn378) is a 46,825-square-foot multifamily housing building at 4015 W 16Th Ave in Denver, Colorado, built in 2018. In its 2023 Denver benchmarking disclosure it reported an ENERGY STAR score of 74 out of 100 (grade B), a site energy-use intensity of 48.0 kBtu/ft² and 259 tCO₂e of greenhouse-gas emissions. That score is higher than 32% of the 956 scored multifamily housing buildings in Denver.
Energize Denver Building Performance Policy · reporting year 2023
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 74 (band B) |
| Site EUI | 48.0 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 259 tCO₂e |
| GHG intensity | — |
| Electricity | 402,292 kWh |
| Natural gas | 8,751 therms |
| Gross floor area | 46,825 sq ft |
| Source record | denver:5912:2023 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2023latest | 74 | -4 | 48.0 kBtu/ft² | 259 tCO₂e |
| 2022 | 78 | +13 | 49.3 kBtu/ft² | 259 tCO₂e |
| 2021 | 65 | 56.2 kBtu/ft² | 272 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
- 4015 W 16Th 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 Sienna Sloan'S Lake (Sn378) 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. Sienna Sloan'S Lake (Sn378)'s ENERGY STAR score of 74 compares with an average of 78 across the 956 that report a score; it scores higher than 32% of them and lower than 68%. Its site EUI of 48.0 kBtu/ft² is about 16% below the average of 57.0 kBtu/ft² — it uses less energy per square foot than the typical building in that group.
At 46,825 sq ft, it is about 63% below the average floor area of 126,139 sq ft for those buildings. It was built in 2018, 28 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 Sienna Sloan'S Lake (Sn378)'s energy performance changed over time?
BuildingCensus holds 3 Denver disclosures for Sienna Sloan'S Lake (Sn378), covering report years 2021–2023. Its ENERGY STAR score went from 65 in 2021 to 74 in 2023 (+9 points); its best year on file was 2022, at 78. Site EUI moved from 56.2 kBtu/ft² (2021) to 48.0 kBtu/ft² (2023), a 15% decrease. Reported emissions went from 272 tCO₂e to 259 tCO₂e over the same span (down 5%).
What does an ENERGY STAR score of 74 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 74 means the building performs better than about 74% of its national peers. BuildingCensus bands the score into report-card grades; 74 falls in band B — above median (70–84). It sits 1 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. Sienna Sloan'S Lake (Sn378)'s 48.0 kBtu/ft² across 46,825 sq ft works out to about 2.2 billion Btu (659 MWh-equivalent) in 2023. The disclosure also reports 402,292 kWh of electricity and 8,751 therms of natural gas for the year.
Which law requires Sienna Sloan'S Lake (Sn378) to report its energy use?
Sienna Sloan'S Lake (Sn378) 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:5912:2023). 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
- Downing Street Station Condominium Association· 46,800 sq ft · score 75 (B)
- Moto· 46,772 sq ft · score 100 (A)
- Lafayette Tower East· 46,637 sq ft · score 85 (A)
- Summer Ridge Apartments· 46,549 sq ft · score 71 (B)
- Studebaker· 46,445 sq ft · score 87 (A)
- Grace Apts.· 46,437 sq ft · score 80 (B)
- Multifamily Housing buildings in Denver· 1,108 benchmarked
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Frequently asked questions
What is Sienna Sloan'S Lake (Sn378)'s energy grade?
Sienna Sloan'S Lake (Sn378) scores 74 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 Sienna Sloan'S Lake (Sn378) use?
Its 2023 site energy-use intensity was 48.0 kBtu/ft² across 46,825 sq ft, including 402,292 kWh of electricity and 8,751 therms of natural gas.
What are Sienna Sloan'S Lake (Sn378)'s carbon emissions?
Sienna Sloan'S Lake (Sn378) reported 259 tCO₂e of greenhouse-gas emissions for 2023.
Where is Sienna Sloan'S Lake (Sn378)?
Sienna Sloan'S Lake (Sn378) is at 4015 W 16Th Ave, in Denver, Colorado 80204.
How big is Sienna Sloan'S Lake (Sn378) and when was it built?
Sienna Sloan'S Lake (Sn378) has 46,825 sq ft of gross floor area, as reported in its 2023 disclosure. The disclosure lists 2018 as its year built. It is classed as multifamily housing.
Is Sienna Sloan'S Lake (Sn378) 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, “Sienna Sloan'S Lake (Sn378), Denver, Colorado — 2023 benchmarking disclosure”, https://buildingcensus.com/buildings/denver/sienna-sloan-s-lake-sn378-83b66f35 (data as of July 9, 2026).