400 WESTLAKE- INACTIVE- DEMOLISHED
Retail Store in Seattle, WA · 400 WESTLAKE AVE N · 98109
At a glance
400 WESTLAKE- INACTIVE- DEMOLISHED is a 58,320-square-foot retail store at 400 WESTLAKE AVE N in Seattle, Washington, built in 1929. In its 2018 Seattle benchmarking disclosure it reported a site energy-use intensity of 7.7 kBtu/ft² and 19 tCO₂e of greenhouse-gas emissions.
Seattle Energy Benchmarking Ordinance (SMC 22.920) · reporting year 2018
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 7.7 kBtu/ft² |
| Source EUI | 12.2 kBtu/ft² |
| GHG emissions | 19 tCO₂e |
| GHG intensity | — |
| Electricity | 42,665 kWh |
| Natural gas | 3,350 therms |
| Gross floor area | 58,320 sq ft |
| Source record | seattle:98:2018 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2018latest | — | 7.7 kBtu/ft² | 19 tCO₂e | |
| 2017 | 9 | -84 | 14.9 kBtu/ft² | 37 tCO₂e |
| 2016 | 93 | -2 | 16.9 kBtu/ft² | 39 tCO₂e |
| 2015 | 95 | 14.9 kBtu/ft² | 39 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.
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Location
- Address
- 400 WESTLAKE AVE N
- City
- Seattle
- State
- Washington
- ZIP
- 98109
- Coordinates
- 47.62237, -122.33805
Within ~1 km
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See also: most efficient in Seattle · biggest emitters
How does 400 WESTLAKE- INACTIVE- DEMOLISHED compare with other retail store buildings in Seattle?
The latest disclosures cover 68 retail store buildings in Seattle, out of 3,871 buildings citywide. Its site EUI of 7.7 kBtu/ft² is about 83% below the average of 45.9 kBtu/ft² — it uses less energy per square foot than the typical building in that group.
At 58,320 sq ft, it is about 17% below the average floor area of 70,593 sq ft for those buildings. It was built in 1929, 34 years earlier than the group's average year built (1963). Across all 24 jurisdictions BuildingCensus covers, the 3,025 retail store buildings average an ENERGY STAR score of 73 and a site EUI of 57.7 kBtu/ft².
How has 400 WESTLAKE- INACTIVE- DEMOLISHED's energy performance changed over time?
BuildingCensus holds 4 Seattle disclosures for 400 WESTLAKE- INACTIVE- DEMOLISHED, covering report years 2015–2018. Its ENERGY STAR score went from 95 in 2015 to 9 in 2017 (-86 points); its best year on file was 2015, at 95. Site EUI moved from 14.9 kBtu/ft² (2015) to 7.7 kBtu/ft² (2018), a 48% decrease. Reported emissions went from 39 tCO₂e to 19 tCO₂e over the same span (down 53%).
What does a site EUI of 7.7 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. 400 WESTLAKE- INACTIVE- DEMOLISHED's 7.7 kBtu/ft² across 58,320 sq ft works out to about 0.4 billion Btu (132 MWh-equivalent) in 2018. Its source EUI of 12.2 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 42,665 kWh of electricity and 3,350 therms of natural gas for the year.
Which law requires 400 WESTLAKE- INACTIVE- DEMOLISHED to report its energy use?
400 WESTLAKE- INACTIVE- DEMOLISHED 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 2018 disclosure (source record seattle:98:2018). 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 retail store buildings in Seattle
- Airport Way South· 56,572 sq ft · score 39 (D)
- Georgetown Center - Bldg A· 56,193 sq ft · score 96 (A)
- Westwood Village - Building F· 55,037 sq ft · score 95 (A)
- Greenwood Shopping Center· 51,000 sq ft · EUI 64.7 kBtu/ft²
- Staples Building· 50,660 sq ft · score 100 (A)
- University Village East Bldg S· 49,965 sq ft
- Retail Store buildings in Seattle· 68 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 400 WESTLAKE- INACTIVE- DEMOLISHED's energy grade?
400 WESTLAKE- INACTIVE- DEMOLISHED did not report an ENERGY STAR score in its 2018 disclosure, but its site energy-use intensity was 7.7 kBtu/ft².
How much energy does 400 WESTLAKE- INACTIVE- DEMOLISHED use?
Its 2018 site energy-use intensity was 7.7 kBtu/ft² (12.2 kBtu/ft² source) across 58,320 sq ft, including 42,665 kWh of electricity and 3,350 therms of natural gas.
What are 400 WESTLAKE- INACTIVE- DEMOLISHED's carbon emissions?
400 WESTLAKE- INACTIVE- DEMOLISHED reported 19 tCO₂e of greenhouse-gas emissions for 2018.
Where is 400 WESTLAKE- INACTIVE- DEMOLISHED?
400 WESTLAKE- INACTIVE- DEMOLISHED is at 400 WESTLAKE AVE N, in Seattle, Washington 98109. Its coordinates are 47.62237, -122.33805 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is 400 WESTLAKE- INACTIVE- DEMOLISHED and when was it built?
400 WESTLAKE- INACTIVE- DEMOLISHED has 58,320 sq ft of gross floor area, as reported in its 2018 disclosure. The disclosure lists 1929 as its year built. It is classed as retail store.
Is 400 WESTLAKE- INACTIVE- DEMOLISHED covered by the Seattle Energy Benchmarking Ordinance (SMC 22.920)?
Yes — it appears in the 2018 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, “400 WESTLAKE- INACTIVE- DEMOLISHED, Seattle, Washington — 2018 benchmarking disclosure”, https://buildingcensus.com/buildings/seattle/400-westlake-inactive-demolished-2a104ab7 (data as of October 2, 2026).