At a glance
Denny Building is a 190,642-square-foot office building at 2200 6TH AVE in Seattle, Washington, built in 1968. In its 2025 Seattle benchmarking disclosure it reported an ENERGY STAR score of 91 out of 100 (grade A), a site energy-use intensity of 45.8 kBtu/ft² and 353 tCO₂e of greenhouse-gas emissions. That score is higher than 73% of the 378 scored office buildings in Seattle.
Seattle Energy Benchmarking Ordinance (SMC 22.920) · reporting year 2025
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 91 (band A) |
| Site EUI | 45.8 kBtu/ft² |
| Source EUI | 94.5 kBtu/ft² |
| GHG emissions | 353 tCO₂e |
| GHG intensity | 1.9 kgCO₂e/ft² |
| Electricity | 1,378,900 kWh |
| Gross floor area | 190,642 sq ft |
| Source record | seattle:335:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | 91 | +2 | 45.8 kBtu/ft² | 353 tCO₂e |
| 2024 | 89 | ±0 | 50.9 kBtu/ft² | 435 tCO₂e |
| 2023 | 89 | +2 | 49.1 kBtu/ft² | 391 tCO₂e |
| 2022 | 87 | +1 | 54.0 kBtu/ft² | 453 tCO₂e |
| 2021 | 86 | -2 | 54.1 kBtu/ft² | 443 tCO₂e |
| 2020 | 88 | +3 | 49.4 kBtu/ft² | 362 tCO₂e |
| 2019 | 85 | -3 | 50.7 kBtu/ft² | 332 tCO₂e |
| 2018 | 88 | +10 | 44.7 kBtu/ft² | 236 tCO₂e |
| 2017 | 78 | -13 | 57.0 kBtu/ft² | 287 tCO₂e |
| 2016 | 91 | +3 | 53.3 kBtu/ft² | 224 tCO₂e |
| 2015 | 88 | 57.6 kBtu/ft² | 229 tCO₂e |
Compliance context
Seattle Energy Benchmarking Ordinance (SMC 22.920)
Seattle's Building Emissions Performance Standard (adopted 2023) applies to buildings over 20,000 sq ft: benchmarking verification is due 2027–2030 and initial emissions targets 2031–2035, reaching net zero by 2041–2050, with fines for non-compliance.
Ownership
No owning organisation shown. Names of private individuals in the disclosure are not published here.
Own or manage this building? Claim it to correct the record and get compliance alerts.
Location
- Address
- 2200 6TH AVE
- City
- Seattle
- State
- Washington
- ZIP
- 98121
- Coordinates
- 47.61641, -122.34112
Within ~1 km
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See also: most efficient in Seattle · biggest emitters
How does Denny Building compare with other office buildings in Seattle?
The latest disclosures cover 497 office buildings in Seattle, out of 3,871 buildings citywide. Denny Building's ENERGY STAR score of 91 compares with an average of 76 across the 378 that report a score; it scores higher than 73% of them and lower than 24%. Its site EUI of 45.8 kBtu/ft² is roughly in line with the average of 44.8 kBtu/ft². Its emissions intensity of 1.9 kgCO₂e/ft² is about 164% above the group average of 0.7 kgCO₂e/ft².
At 190,642 sq ft, it is roughly in line with the average floor area of 196,452 sq ft for those buildings. It was built in 1968, 3 years later than the group's average year built (1965). 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 Denny Building's energy performance changed over time?
BuildingCensus holds 11 Seattle disclosures for Denny Building, covering report years 2015–2025. Its ENERGY STAR score went from 88 in 2015 to 91 in 2025 (+3 points); its best year on file was 2016, at 91. Site EUI moved from 57.6 kBtu/ft² (2015) to 45.8 kBtu/ft² (2025), a 20% decrease. Reported emissions went from 229 tCO₂e to 353 tCO₂e over the same span (up 54%).
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 Seattle, 69% 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. Denny Building's 45.8 kBtu/ft² across 190,642 sq ft works out to about 8.7 billion Btu (2,559 MWh-equivalent) in 2025. Its source EUI of 94.5 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 1,378,900 kWh of electricity for the year.
Which law requires Denny Building to report its energy use?
Denny Building reports under the Seattle Energy Benchmarking Ordinance (SMC 22.920), the legal basis of Seattle's Building Energy Benchmarking program, which publishes each covered building's annual benchmarking results. The record shown here is the report-year 2025 disclosure (source record seattle:335:2025). Seattle's Building Emissions Performance Standard (adopted 2023) applies to buildings over 20,000 sq ft: benchmarking verification is due 2027–2030 and initial emissions targets 2031–2035, reaching net zero by 2041–2050, with fines for non-compliance.
More office buildings in Seattle
- 1633 Westlake Building· 189,775 sq ft · EUI 24.0 kBtu/ft²
- 1200 3rd Avenue· 189,175 sq ft · score 63 (C)
- Pier 69· 187,130 sq ft · score 64 (C)
- Abraham Lincoln Building· 186,768 sq ft · score 88 (A)
- 1101 Westlake· 185,116 sq ft · EUI 24.3 kBtu/ft²
- Interurban Exchange Ii (Wainwright)· 184,482 sq ft · score 94 (A)
- Office buildings in Seattle· 497 benchmarked
- All Seattle benchmarked buildings· Seattle Energy Benchmarking Ordinance (SMC 22.920)
- Most efficient large buildings in Seattle
- Least efficient large buildings in Seattle
- Biggest emitters in Seattle
Frequently asked questions
What is Denny Building's energy grade?
Denny Building scores 91 out of 100 on ENERGY STAR — band A, high performer (85–100) — in its 2025 Seattle disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does Denny Building use?
Its 2025 site energy-use intensity was 45.8 kBtu/ft² (94.5 kBtu/ft² source) across 190,642 sq ft, including 1,378,900 kWh of electricity.
What are Denny Building's carbon emissions?
Denny Building reported 353 tCO₂e of greenhouse-gas emissions (1.9 kgCO₂e/ft²) for 2025.
Where is Denny Building?
Denny Building is at 2200 6TH AVE, in Seattle, Washington 98121. Its coordinates are 47.61641, -122.34112 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is Denny Building and when was it built?
Denny Building has 190,642 sq ft of gross floor area, as reported in its 2025 disclosure. The disclosure lists 1968 as its year built. It is classed as office.
Is Denny Building covered by the Seattle Energy Benchmarking Ordinance (SMC 22.920)?
Yes — it appears in the 2025 Building Energy Benchmarking disclosure, which lists the buildings reporting under the Seattle Energy Benchmarking Ordinance (SMC 22.920).
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About this data
Source: Building Energy Benchmarking (Seattle Energy Benchmarking Ordinance (SMC 22.920)), as published October 2, 2026. See the methodology for how records are matched, cleaned and scored.
Cite as: BuildingCensus, “Denny Building, Seattle, Washington — 2025 benchmarking disclosure”, https://buildingcensus.com/buildings/seattle/denny-building-bcf11f12 (data as of October 2, 2026).