B25 - 1777 & 1805
Medical Office in Denver, CO · 1805 S. Bellaire Street · 80222
At a glance
B25 - 1777 & 1805 is a 76,015-square-foot medical office at 1805 S. Bellaire Street in Denver, Colorado, built in 1965. In its 2023 Denver benchmarking disclosure it reported a site energy-use intensity of 63.1 kBtu/ft² and 458 tCO₂e of greenhouse-gas emissions.
Energize Denver Building Performance Policy · reporting year 2023
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 63.1 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 458 tCO₂e |
| GHG intensity | — |
| Electricity | 585,266 kWh |
| Natural gas | 27,962 therms |
| Gross floor area | 76,015 sq ft |
| Source record | denver:5255:2023 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2023latest | — | 63.1 kBtu/ft² | 458 tCO₂e | |
| 2022 | 74 | +1 | 73.0 kBtu/ft² | 514 tCO₂e |
| 2021 | 73 | 72.8 kBtu/ft² | 545 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
- 1805 S. Bellaire Street
- City
- Denver
- State
- Colorado
- ZIP
- 80222
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 B25 - 1777 & 1805 compare with other medical office buildings in Denver?
The latest disclosures cover 39 medical office buildings in Denver, out of 3,287 buildings citywide. Its site EUI of 63.1 kBtu/ft² is about 33% below the average of 94.5 kBtu/ft² — it uses less energy per square foot than the typical building in that group.
At 76,015 sq ft, it is roughly in line with the average floor area of 69,292 sq ft for those buildings. It was built in 1965, 25 years earlier than the group's average year built (1990). Across all 24 jurisdictions BuildingCensus covers, the 1,266 medical office buildings average an ENERGY STAR score of 64 and a site EUI of 92.2 kBtu/ft².
How has B25 - 1777 & 1805's energy performance changed over time?
BuildingCensus holds 3 Denver disclosures for B25 - 1777 & 1805, covering report years 2021–2023. Its ENERGY STAR score went from 73 in 2021 to 74 in 2022 (+1 points). Site EUI moved from 72.8 kBtu/ft² (2021) to 63.1 kBtu/ft² (2023), a 13% decrease. Reported emissions went from 545 tCO₂e to 458 tCO₂e over the same span (down 16%).
What does a site EUI of 63.1 kBtu/ft² mean?
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. B25 - 1777 & 1805's 63.1 kBtu/ft² across 76,015 sq ft works out to about 4.8 billion Btu (1,406 MWh-equivalent) in 2023. The disclosure also reports 585,266 kWh of electricity and 27,962 therms of natural gas for the year.
Which law requires B25 - 1777 & 1805 to report its energy use?
B25 - 1777 & 1805 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:5255:2023). 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 medical office buildings in Denver
- Rocky Mountain Professional Plaza· 73,515 sq ft · score 46 (D)
- Co0061 - East Denver Medical Offices· 72,004 sq ft · score 99 (A)
- Professional Plaza East· 62,812 sq ft · score 37 (D)
- Eastside Clinic 5326660319· 61,054 sq ft · score 50 (D)
- Central Park· 47,715 sq ft · score 80 (B)
- Expo· 47,069 sq ft · score 66 (C)
- Medical Office buildings in Denver· 39 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 B25 - 1777 & 1805's energy grade?
B25 - 1777 & 1805 did not report an ENERGY STAR score in its 2023 disclosure, but its site energy-use intensity was 63.1 kBtu/ft².
How much energy does B25 - 1777 & 1805 use?
Its 2023 site energy-use intensity was 63.1 kBtu/ft² across 76,015 sq ft, including 585,266 kWh of electricity and 27,962 therms of natural gas.
What are B25 - 1777 & 1805's carbon emissions?
B25 - 1777 & 1805 reported 458 tCO₂e of greenhouse-gas emissions for 2023.
Where is B25 - 1777 & 1805?
B25 - 1777 & 1805 is at 1805 S. Bellaire Street, in Denver, Colorado 80222.
How big is B25 - 1777 & 1805 and when was it built?
B25 - 1777 & 1805 has 76,015 sq ft of gross floor area, as reported in its 2023 disclosure. The disclosure lists 1965 as its year built. It is classed as medical office.
Is B25 - 1777 & 1805 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, “B25 - 1777 & 1805, Denver, Colorado — 2023 benchmarking disclosure”, https://buildingcensus.com/buildings/denver/b25-1777-1805-1b5d6782 (data as of July 9, 2026).