At a glance
1St Avenue Plaza - 44 Cook Street is a 123,280-square-foot office building in Denver, Colorado, built in 1984. In its 2023 Denver benchmarking disclosure it reported an ENERGY STAR score of 55 out of 100 (grade C), a site energy-use intensity of 75.6 kBtu/ft² and 1,240 tCO₂e of greenhouse-gas emissions. That score is higher than 17% of the 339 scored office buildings in Denver.
Energize Denver Building Performance Policy · reporting year 2023
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 55 (band C) |
| Site EUI | 75.6 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 1,240 tCO₂e |
| GHG intensity | — |
| Electricity | 2,142,277 kWh |
| Natural gas | 20,076 therms |
| Gross floor area | 123,280 sq ft |
| Source record | denver:3475:2023 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2023latest | 55 | -8 | 75.6 kBtu/ft² | 1,240 tCO₂e |
| 2022 | 63 | -6 | 73.2 kBtu/ft² | 1,151 tCO₂e |
| 2021 | 69 | 69.5 kBtu/ft² | 1,138 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
- 44 Cook Street
- City
- Denver
- State
- Colorado
- ZIP
- 80206
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 1St Avenue Plaza - 44 Cook Street compare with other office buildings in Denver?
The latest disclosures cover 427 office buildings in Denver, out of 3,287 buildings citywide. 1St Avenue Plaza - 44 Cook Street's ENERGY STAR score of 55 compares with an average of 71 across the 339 that report a score; it scores higher than 17% of them and lower than 82%. Its site EUI of 75.6 kBtu/ft² is about 13% above the average of 67.1 kBtu/ft² — it uses more energy per square foot than the typical building in that group.
At 123,280 sq ft, it is about 22% below the average floor area of 157,927 sq ft for those buildings. It was built in 1984, 4 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 1St Avenue Plaza - 44 Cook Street's energy performance changed over time?
BuildingCensus holds 3 Denver disclosures for 1St Avenue Plaza - 44 Cook Street, covering report years 2021–2023. Its ENERGY STAR score went from 69 in 2021 to 55 in 2023 (-14 points); its best year on file was 2021, at 69. Site EUI moved from 69.5 kBtu/ft² (2021) to 75.6 kBtu/ft² (2023), an 9% increase. Reported emissions went from 1,138 tCO₂e to 1,240 tCO₂e over the same span (up 9%).
What does an ENERGY STAR score of 55 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 55 means the building performs better than about 55% of its national peers. BuildingCensus bands the score into report-card grades; 55 falls in band C — below median (55–69). It sits 20 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. 1St Avenue Plaza - 44 Cook Street's 75.6 kBtu/ft² across 123,280 sq ft works out to about 9.3 billion Btu (2,731 MWh-equivalent) in 2023. The disclosure also reports 2,142,277 kWh of electricity and 20,076 therms of natural gas for the year.
Which law requires 1St Avenue Plaza - 44 Cook Street to report its energy use?
1St Avenue Plaza - 44 Cook Street 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:3475:2023). 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
- 1755 Blake· 123,131 sq ft · score 92 (A)
- Colorado Executive Club Building, Llc· 121,992 sq ft · score 98 (A)
- 1740 Broadway· 121,161 sq ft · EUI 11.3 kBtu/ft²
- Co0011 - Regional Office - Colorado· 121,135 sq ft · score 100 (A)
- 17Th And Larimer· 120,093 sq ft · score 87 (A)
- The Spectrum Building - 2730· 119,155 sq ft · EUI 86.6 kBtu/ft²
- 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 1St Avenue Plaza - 44 Cook Street's energy grade?
1St Avenue Plaza - 44 Cook Street scores 55 out of 100 on ENERGY STAR — band C, below median (55–69) — in its 2023 Denver disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does 1St Avenue Plaza - 44 Cook Street use?
Its 2023 site energy-use intensity was 75.6 kBtu/ft² across 123,280 sq ft, including 2,142,277 kWh of electricity and 20,076 therms of natural gas.
What are 1St Avenue Plaza - 44 Cook Street's carbon emissions?
1St Avenue Plaza - 44 Cook Street reported 1,240 tCO₂e of greenhouse-gas emissions for 2023.
Where is 1St Avenue Plaza - 44 Cook Street?
1St Avenue Plaza - 44 Cook Street is in Denver, Colorado 80206.
How big is 1St Avenue Plaza - 44 Cook Street and when was it built?
1St Avenue Plaza - 44 Cook Street has 123,280 sq ft of gross floor area, as reported in its 2023 disclosure. The disclosure lists 1984 as its year built. It is classed as office.
Is 1St Avenue Plaza - 44 Cook Street 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, “1St Avenue Plaza - 44 Cook Street, Denver, Colorado — 2023 benchmarking disclosure”, https://buildingcensus.com/buildings/denver/1st-avenue-plaza-44-cook-street-e8ee2e8f (data as of July 9, 2026).