Warehouse/Office
Mixed Use Property in Seattle, WA · 401 8TH AVE N · 98109
At a glance
Warehouse/Office is a 28,800-square-foot mixed use property building at 401 8TH AVE N in Seattle, Washington, built in 1928. In its 2025 Seattle benchmarking disclosure it reported a site energy-use intensity of 19.2 kBtu/ft² and 19 tCO₂e of greenhouse-gas emissions.
Seattle Energy Benchmarking Ordinance (SMC 22.920) · reporting year 2025
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 19.2 kBtu/ft² |
| Source EUI | 32.7 kBtu/ft² |
| GHG emissions | 19 tCO₂e |
| GHG intensity | 0.7 kgCO₂e/ft² |
| Electricity | 60,317 kWh |
| Natural gas | 3,472 therms |
| Gross floor area | 28,800 sq ft |
| Source record | seattle:21270:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | — | 19.2 kBtu/ft² | 19 tCO₂e | |
| 2024 | — | 16.2 kBtu/ft² | 17 tCO₂e | |
| 2023 | — | 27.4 kBtu/ft² | 34 tCO₂e | |
| 2022 | — | 14.7 kBtu/ft² | 15 tCO₂e | |
| 2021 | — | 12.0 kBtu/ft² | 12 tCO₂e | |
| 2020 | — | 12.6 kBtu/ft² | 13 tCO₂e | |
| 2019 | — | 23.7 kBtu/ft² | 28 tCO₂e | |
| 2018 | — | 23.7 kBtu/ft² | 16 tCO₂e | |
| 2017 | — | 18.0 kBtu/ft² | 12 tCO₂e | |
| 2016 | — | 15.9 kBtu/ft² | 12 tCO₂e | |
| 2015 | — | 14.0 kBtu/ft² | 11 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
- 401 8TH AVE N
- City
- Seattle
- State
- Washington
- ZIP
- 98109
- Coordinates
- 47.62231, -122.34145
Within ~1 km
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See also: most efficient in Seattle · biggest emitters
How does Warehouse/Office compare with other mixed use property buildings in Seattle?
The latest disclosures cover 157 mixed use property buildings in Seattle, out of 3,871 buildings citywide. Its site EUI of 19.2 kBtu/ft² is about 72% below the average of 68.7 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 0.7 kgCO₂e/ft² is about half of the group average of 1.4 kgCO₂e/ft².
At 28,800 sq ft, it is about 83% below the average floor area of 165,352 sq ft for those buildings. It was built in 1928, 40 years earlier than the group's average year built (1968). Across all 24 jurisdictions BuildingCensus covers, the 1,212 mixed use property buildings average an ENERGY STAR score of 69 and a site EUI of 79.8 kBtu/ft².
How has Warehouse/Office's energy performance changed over time?
BuildingCensus holds 11 Seattle disclosures for Warehouse/Office, covering report years 2015–2025. Site EUI moved from 14.0 kBtu/ft² (2015) to 19.2 kBtu/ft² (2025), an 37% increase. Reported emissions went from 11 tCO₂e to 19 tCO₂e over the same span (up 72%).
What does a site EUI of 19.2 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. Warehouse/Office's 19.2 kBtu/ft² across 28,800 sq ft works out to about 0.6 billion Btu (162 MWh-equivalent) in 2025. Its source EUI of 32.7 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 60,317 kWh of electricity and 3,472 therms of natural gas for the year.
Which law requires Warehouse/Office to report its energy use?
Warehouse/Office 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:21270:2025). 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 mixed use property buildings in Seattle
- U.S. BANK- demolished· 28,696 sq ft
- 110 Cherry Building· 28,600 sq ft · EUI 37.6 kBtu/ft²
- Pac Med And Apts· 27,085 sq ft · EUI 70.6 kBtu/ft²
- Juke Box City· 27,000 sq ft · EUI 4.4 kBtu/ft²
- Warehouse, 20 S IDAHO ST· 26,680 sq ft · EUI 71.7 kBtu/ft²
- Tesla Motors Inc· 25,920 sq ft · EUI 36.2 kBtu/ft²
- Mixed Use Property buildings in Seattle· 157 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 Warehouse/Office's energy grade?
Warehouse/Office did not report an ENERGY STAR score in its 2025 disclosure, but its site energy-use intensity was 19.2 kBtu/ft².
How much energy does Warehouse/Office use?
Its 2025 site energy-use intensity was 19.2 kBtu/ft² (32.7 kBtu/ft² source) across 28,800 sq ft, including 60,317 kWh of electricity and 3,472 therms of natural gas.
What are Warehouse/Office's carbon emissions?
Warehouse/Office reported 19 tCO₂e of greenhouse-gas emissions (0.7 kgCO₂e/ft²) for 2025.
Where is Warehouse/Office?
Warehouse/Office is at 401 8TH AVE N, in Seattle, Washington 98109. Its coordinates are 47.62231, -122.34145 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is Warehouse/Office and when was it built?
Warehouse/Office has 28,800 sq ft of gross floor area, as reported in its 2025 disclosure. The disclosure lists 1928 as its year built. It is classed as mixed use property.
Is Warehouse/Office 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, “Warehouse/Office, Seattle, Washington — 2025 benchmarking disclosure”, https://buildingcensus.com/buildings/seattle/warehouse-office-96041bf1 (data as of October 2, 2026).