At a glance
Blk220, Llc - 1800 Wazee is a 350,003-square-foot office building at 1800 Wazee St, Ste 200 in Denver, Colorado, built in 2015. In its 2023 Denver benchmarking disclosure it reported an ENERGY STAR score of 83 out of 100 (grade B), a site energy-use intensity of 55.2 kBtu/ft² and 2,515 tCO₂e of greenhouse-gas emissions. That score is higher than 64% of the 339 scored office buildings in Denver.
Energize Denver Building Performance Policy · reporting year 2023
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 83 (band B) |
| Site EUI | 55.2 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 2,515 tCO₂e |
| GHG intensity | — |
| Electricity | 4,279,589 kWh |
| Natural gas | 47,333 therms |
| Gross floor area | 350,003 sq ft |
| Source record | denver:5938:2023 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2023latest | 83 | ±0 | 55.2 kBtu/ft² | 2,515 tCO₂e |
| 2022 | 83 | +1 | 55.1 kBtu/ft² | 2,513 tCO₂e |
| 2021 | 82 | 56.3 kBtu/ft² | 2,717 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
- 1800 Wazee St, Ste 200
- 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 Blk220, Llc - 1800 Wazee compare with other office buildings in Denver?
The latest disclosures cover 427 office buildings in Denver, out of 3,287 buildings citywide. Blk220, Llc - 1800 Wazee's ENERGY STAR score of 83 compares with an average of 71 across the 339 that report a score; it scores higher than 64% of them and lower than 32%. Its site EUI of 55.2 kBtu/ft² is about 18% below the average of 67.1 kBtu/ft² — it uses less energy per square foot than the typical building in that group.
At 350,003 sq ft, it is about 122% above the average floor area of 157,927 sq ft for those buildings. It was built in 2015, 35 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 Blk220, Llc - 1800 Wazee's energy performance changed over time?
BuildingCensus holds 3 Denver disclosures for Blk220, Llc - 1800 Wazee, covering report years 2021–2023. Its ENERGY STAR score went from 82 in 2021 to 83 in 2023 (+1 points); its best year on file was 2022, at 83. Site EUI moved from 56.3 kBtu/ft² (2021) to 55.2 kBtu/ft² (2023), a 2% decrease. Reported emissions went from 2,717 tCO₂e to 2,515 tCO₂e over the same span (down 7%).
What does an ENERGY STAR score of 83 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 83 means the building performs better than about 83% of its national peers. BuildingCensus bands the score into report-card grades; 83 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. Blk220, Llc - 1800 Wazee's 55.2 kBtu/ft² across 350,003 sq ft works out to about 19.3 billion Btu (5,662 MWh-equivalent) in 2023. The disclosure also reports 4,279,589 kWh of electricity and 47,333 therms of natural gas for the year.
Which law requires Blk220, Llc - 1800 Wazee to report its energy use?
Blk220, Llc - 1800 Wazee 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:5938:2023). 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
- Denver Post Building - 101 Colfax· 338,779 sq ft · score 82 (B)
- Metropoint I· 333,700 sq ft · score 82 (B)
- Z438510-4600 South Syracuse· 322,063 sq ft · score 75 (B)
- 1601 Wewatta· 318,874 sq ft · score 82 (B)
- 1515 Wynkoop· 314,599 sq ft · score 92 (A)
- 251910 - 1290 Broadway· 308,238 sq ft · score 80 (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 Blk220, Llc - 1800 Wazee's energy grade?
Blk220, Llc - 1800 Wazee scores 83 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 Blk220, Llc - 1800 Wazee use?
Its 2023 site energy-use intensity was 55.2 kBtu/ft² across 350,003 sq ft, including 4,279,589 kWh of electricity and 47,333 therms of natural gas.
What are Blk220, Llc - 1800 Wazee's carbon emissions?
Blk220, Llc - 1800 Wazee reported 2,515 tCO₂e of greenhouse-gas emissions for 2023.
Where is Blk220, Llc - 1800 Wazee?
Blk220, Llc - 1800 Wazee is at 1800 Wazee St, Ste 200, in Denver, Colorado 80202.
How big is Blk220, Llc - 1800 Wazee and when was it built?
Blk220, Llc - 1800 Wazee has 350,003 sq ft of gross floor area, as reported in its 2023 disclosure. The disclosure lists 2015 as its year built. It is classed as office.
Is Blk220, Llc - 1800 Wazee 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, “Blk220, Llc - 1800 Wazee, Denver, Colorado — 2023 benchmarking disclosure”, https://buildingcensus.com/buildings/denver/blk220-llc-1800-wazee-5783859f (data as of July 9, 2026).