Ashley Union Station - 1850 Chestnut Place
Multifamily Housing in Denver, CO · 1850 Chestnut Place · 80202
At a glance
Ashley Union Station - 1850 Chestnut Place is a 112,481-square-foot multifamily housing building in Denver, Colorado, built in 2017. In its 2023 Denver benchmarking disclosure it reported an ENERGY STAR score of 75 out of 100 (grade B), a site energy-use intensity of 48.9 kBtu/ft² and 525 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 | 75 (band B) |
| Site EUI | 48.9 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 525 tCO₂e |
| GHG intensity | — |
| Electricity | 669,902 kWh |
| Natural gas | 32,198 therms |
| Gross floor area | 112,481 sq ft |
| Source record | denver:6060:2023 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2023latest | 75 | +3 | 48.9 kBtu/ft² | 525 tCO₂e |
| 2022 | 72 | +4 | 51.3 kBtu/ft² | 566 tCO₂e |
| 2021 | 68 | 51.0 kBtu/ft² | 598 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
- 1850 Chestnut Place
- City
- Denver
- State
- Colorado
- ZIP
- 80202
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 Ashley Union Station - 1850 Chestnut Place 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. Ashley Union Station - 1850 Chestnut Place's ENERGY STAR score of 75 compares with an average of 78 across the 956 that report a score; it scores higher than 32% of them and lower than 66%. Its site EUI of 48.9 kBtu/ft² is about 14% below the average of 57.0 kBtu/ft² — it uses less energy per square foot than the typical building in that group.
At 112,481 sq ft, it is about 11% below the average floor area of 126,139 sq ft for those buildings. It was built in 2017, 27 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 Ashley Union Station - 1850 Chestnut Place's energy performance changed over time?
BuildingCensus holds 3 Denver disclosures for Ashley Union Station - 1850 Chestnut Place, covering report years 2021–2023. Its ENERGY STAR score went from 68 in 2021 to 75 in 2023 (+7 points). Site EUI moved from 51.0 kBtu/ft² (2021) to 48.9 kBtu/ft² (2023), a 4% decrease. Reported emissions went from 598 tCO₂e to 525 tCO₂e over the same span (down 12%).
What does an ENERGY STAR score of 75 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 75 means the building performs better than about 75% of its national peers. BuildingCensus bands the score into report-card grades; 75 falls in band B — above median (70–84). 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. Ashley Union Station - 1850 Chestnut Place's 48.9 kBtu/ft² across 112,481 sq ft works out to about 5.5 billion Btu (1,612 MWh-equivalent) in 2023. The disclosure also reports 669,902 kWh of electricity and 32,198 therms of natural gas for the year.
Which law requires Ashley Union Station - 1850 Chestnut Place to report its energy use?
Ashley Union Station - 1850 Chestnut Place 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:6060:2023). 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.
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Frequently asked questions
What is Ashley Union Station - 1850 Chestnut Place's energy grade?
Ashley Union Station - 1850 Chestnut Place scores 75 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 Ashley Union Station - 1850 Chestnut Place use?
Its 2023 site energy-use intensity was 48.9 kBtu/ft² across 112,481 sq ft, including 669,902 kWh of electricity and 32,198 therms of natural gas.
What are Ashley Union Station - 1850 Chestnut Place's carbon emissions?
Ashley Union Station - 1850 Chestnut Place reported 525 tCO₂e of greenhouse-gas emissions for 2023.
Where is Ashley Union Station - 1850 Chestnut Place?
Ashley Union Station - 1850 Chestnut Place is in Denver, Colorado 80202.
How big is Ashley Union Station - 1850 Chestnut Place and when was it built?
Ashley Union Station - 1850 Chestnut Place has 112,481 sq ft of gross floor area, as reported in its 2023 disclosure. The disclosure lists 2017 as its year built. It is classed as multifamily housing.
Is Ashley Union Station - 1850 Chestnut Place 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, “Ashley Union Station - 1850 Chestnut Place, Denver, Colorado — 2023 benchmarking disclosure”, https://buildingcensus.com/buildings/denver/ashley-union-station-1850-chestnut-place-e3109f99 (data as of July 9, 2026).