At a glance
8Th Ave is a 45,000-square-foot office building at 2505-2595 W. 8Th Ave. in Denver, Colorado, built in 1961. In its 2023 Denver benchmarking disclosure it reported an ENERGY STAR score of 91 out of 100 (grade A), a site energy-use intensity of 33.0 kBtu/ft² and 112 tCO₂e of greenhouse-gas emissions. That score is higher than 88% of the 339 scored office buildings in Denver.
Energize Denver Building Performance Policy · reporting year 2023
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 91 (band A) |
| Site EUI | 33.0 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 112 tCO₂e |
| GHG intensity | — |
| Electricity | 94,578 kWh |
| Natural gas | 11,627 therms |
| Gross floor area | 45,000 sq ft |
| Source record | denver:3225:2023 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2023latest | 91 | +1 | 33.0 kBtu/ft² | 112 tCO₂e |
| 2022 | 90 | +3 | 35.2 kBtu/ft² | 118 tCO₂e |
| 2021 | 87 | 36.0 kBtu/ft² | 132 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
- 2505-2595 W. 8Th 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 8Th Ave compare with other office buildings in Denver?
The latest disclosures cover 427 office buildings in Denver, out of 3,287 buildings citywide. 8Th Ave's ENERGY STAR score of 91 compares with an average of 71 across the 339 that report a score; it scores higher than 88% of them and lower than 10%. Its site EUI of 33.0 kBtu/ft² is about half of the average of 67.1 kBtu/ft² — it uses less energy per square foot than the typical building in that group.
At 45,000 sq ft, it is about 72% below the average floor area of 157,927 sq ft for those buildings. It was built in 1961, 19 years earlier than the group's average year built (1980). Across all 24 jurisdictions BuildingCensus covers, the 15,264 office buildings average an ENERGY STAR score of 73 and a site EUI of 59.3 kBtu/ft².
How has 8Th Ave's energy performance changed over time?
BuildingCensus holds 3 Denver disclosures for 8Th Ave, covering report years 2021–2023. Its ENERGY STAR score went from 87 in 2021 to 91 in 2023 (+4 points). Site EUI moved from 36.0 kBtu/ft² (2021) to 33.0 kBtu/ft² (2023), a 8% decrease. Reported emissions went from 132 tCO₂e to 112 tCO₂e over the same span (down 15%).
What does an ENERGY STAR score of 91 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 91 means the building performs better than about 91% of its national peers. BuildingCensus bands the score into report-card grades; 91 falls in band A — high performer (85–100). 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. 8Th Ave's 33.0 kBtu/ft² across 45,000 sq ft works out to about 1.5 billion Btu (435 MWh-equivalent) in 2023. The disclosure also reports 94,578 kWh of electricity and 11,627 therms of natural gas for the year.
Which law requires 8Th Ave to report its energy use?
8Th Ave 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:3225:2023). 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 office buildings in Denver
- 800 Grant Street· 44,733 sq ft · EUI 71.4 kBtu/ft²
- Colorado Education Association· 44,358 sq ft · score 27 (D)
- 4045 Pecos St· 44,181 sq ft · score 83 (B)
- Gateway Vii· 43,877 sq ft · EUI 49.4 kBtu/ft²
- Mf Stapleton, Llc· 43,836 sq ft · EUI 64.4 kBtu/ft²
- Kenny Electric· 43,827 sq ft · score 77 (B)
- Office buildings in Denver· 427 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 8Th Ave's energy grade?
8Th Ave scores 91 out of 100 on ENERGY STAR — band A, high performer (85–100) — in its 2023 Denver disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does 8Th Ave use?
Its 2023 site energy-use intensity was 33.0 kBtu/ft² across 45,000 sq ft, including 94,578 kWh of electricity and 11,627 therms of natural gas.
What are 8Th Ave's carbon emissions?
8Th Ave reported 112 tCO₂e of greenhouse-gas emissions for 2023.
Where is 8Th Ave?
8Th Ave is at 2505-2595 W. 8Th Ave., in Denver, Colorado 80204.
How big is 8Th Ave and when was it built?
8Th Ave has 45,000 sq ft of gross floor area, as reported in its 2023 disclosure. The disclosure lists 1961 as its year built. It is classed as office.
Is 8Th Ave 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, “8Th Ave, Denver, Colorado — 2023 benchmarking disclosure”, https://buildingcensus.com/buildings/denver/8th-ave-162e03e8 (data as of July 9, 2026).