At a glance
Belleview Corporate Plaza I - 6501 E. Belleview Ave - Oef is a 90,712-square-foot office building at 6501 E. Belleview Ave. in Denver, Colorado, built in 1996. In its 2023 Denver benchmarking disclosure it reported an ENERGY STAR score of 80 out of 100 (grade B), a site energy-use intensity of 49.9 kBtu/ft² and 701 tCO₂e of greenhouse-gas emissions. That score is higher than 54% of the 339 scored office buildings in Denver.
Energize Denver Building Performance Policy · reporting year 2023
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 80 (band B) |
| Site EUI | 49.9 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 701 tCO₂e |
| GHG intensity | — |
| Electricity | 1,323,282 kWh |
| Natural gas | 114 therms |
| Gross floor area | 90,712 sq ft |
| Source record | denver:5493:2023 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2023latest | 80 | +10 | 49.9 kBtu/ft² | 701 tCO₂e |
| 2022 | 70 | +11 | 53.7 kBtu/ft² | 744 tCO₂e |
| 2021 | 59 | 60.9 kBtu/ft² | 917 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
- 6501 E. Belleview Ave.
- City
- Denver
- State
- Colorado
- ZIP
- 80111
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 Belleview Corporate Plaza I - 6501 E. Belleview Ave - Oef compare with other office buildings in Denver?
The latest disclosures cover 427 office buildings in Denver, out of 3,287 buildings citywide. Belleview Corporate Plaza I - 6501 E. Belleview Ave - Oef's ENERGY STAR score of 80 compares with an average of 71 across the 339 that report a score; it scores higher than 54% of them and lower than 44%. Its site EUI of 49.9 kBtu/ft² is about 26% below the average of 67.1 kBtu/ft² — it uses less energy per square foot than the typical building in that group.
At 90,712 sq ft, it is about 43% below the average floor area of 157,927 sq ft for those buildings. It was built in 1996, 16 years later 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 Belleview Corporate Plaza I - 6501 E. Belleview Ave - Oef's energy performance changed over time?
BuildingCensus holds 3 Denver disclosures for Belleview Corporate Plaza I - 6501 E. Belleview Ave - Oef, covering report years 2021–2023. Its ENERGY STAR score went from 59 in 2021 to 80 in 2023 (+21 points). Site EUI moved from 60.9 kBtu/ft² (2021) to 49.9 kBtu/ft² (2023), a 18% decrease. Reported emissions went from 917 tCO₂e to 701 tCO₂e over the same span (down 24%).
What does an ENERGY STAR score of 80 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 80 means the building performs better than about 80% of its national peers. BuildingCensus bands the score into report-card grades; 80 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. Belleview Corporate Plaza I - 6501 E. Belleview Ave - Oef's 49.9 kBtu/ft² across 90,712 sq ft works out to about 4.5 billion Btu (1,327 MWh-equivalent) in 2023. The disclosure also reports 1,323,282 kWh of electricity and 114 therms of natural gas for the year.
Which law requires Belleview Corporate Plaza I - 6501 E. Belleview Ave - Oef to report its energy use?
Belleview Corporate Plaza I - 6501 E. Belleview Ave - Oef 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:5493:2023). 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
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- 777 Grant· 89,600 sq ft · score 96 (A)
- 660 Bannock 5336150277· 89,305 sq ft
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- The Lab· 85,836 sq ft · score 90 (A)
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- 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 Belleview Corporate Plaza I - 6501 E. Belleview Ave - Oef's energy grade?
Belleview Corporate Plaza I - 6501 E. Belleview Ave - Oef scores 80 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 Belleview Corporate Plaza I - 6501 E. Belleview Ave - Oef use?
Its 2023 site energy-use intensity was 49.9 kBtu/ft² across 90,712 sq ft, including 1,323,282 kWh of electricity and 114 therms of natural gas.
What are Belleview Corporate Plaza I - 6501 E. Belleview Ave - Oef's carbon emissions?
Belleview Corporate Plaza I - 6501 E. Belleview Ave - Oef reported 701 tCO₂e of greenhouse-gas emissions for 2023.
Where is Belleview Corporate Plaza I - 6501 E. Belleview Ave - Oef?
Belleview Corporate Plaza I - 6501 E. Belleview Ave - Oef is at 6501 E. Belleview Ave., in Denver, Colorado 80111.
How big is Belleview Corporate Plaza I - 6501 E. Belleview Ave - Oef and when was it built?
Belleview Corporate Plaza I - 6501 E. Belleview Ave - Oef has 90,712 sq ft of gross floor area, as reported in its 2023 disclosure. The disclosure lists 1996 as its year built. It is classed as office.
Is Belleview Corporate Plaza I - 6501 E. Belleview Ave - Oef 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, “Belleview Corporate Plaza I - 6501 E. Belleview Ave - Oef, Denver, Colorado — 2023 benchmarking disclosure”, https://buildingcensus.com/buildings/denver/belleview-corporate-plaza-i-6501-e-belleview-ave-oef-9bca74d2 (data as of July 9, 2026).