Boeing Plant 2 - Campus
Mixed Use Property in Seattle, WA · 1135 S WEBSTER ST · 98108
At a glance
Boeing Plant 2 - Campus is a 2,026,324-square-foot mixed use property building at 1135 S WEBSTER ST in Seattle, Washington, built in 1992. In its 2025 Seattle benchmarking disclosure it reported a site energy-use intensity of 66.0 kBtu/ft² and 5,227 tCO₂e of greenhouse-gas emissions.
Seattle Energy Benchmarking Ordinance (SMC 22.920) · reporting year 2025
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 66.0 kBtu/ft² |
| Source EUI | 91.8 kBtu/ft² |
| GHG emissions | 5,227 tCO₂e |
| GHG intensity | 2.9 kgCO₂e/ft² |
| Electricity | 6,776,540 kWh |
| Natural gas | 960,960 therms |
| Gross floor area | 2,026,324 sq ft |
| Source record | seattle:43:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | — | 66.0 kBtu/ft² | 5,227 tCO₂e | |
| 2024 | — | 249.5 kBtu/ft² | 18,907 tCO₂e | |
| 2023 | — | 261.0 kBtu/ft² | 20,400 tCO₂e | |
| 2022 | — | 291.5 kBtu/ft² | 23,786 tCO₂e | |
| 2021 | — | 260.5 kBtu/ft² | 20,645 tCO₂e | |
| 2020 | — | 240.0 kBtu/ft² | 18,368 tCO₂e | |
| 2019 | — | 276.8 kBtu/ft² | 21,500 tCO₂e | |
| 2018 | — | 286.1 kBtu/ft² | 22,289 tCO₂e | |
| 2017 | — | 286.4 kBtu/ft² | 23,038 tCO₂e | |
| 2016 | 8 | 221.7 kBtu/ft² | 16,662 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
- 1135 S WEBSTER ST
- City
- Seattle
- State
- Washington
- ZIP
- 98108
- Coordinates
- 47.53493, -122.31788
Within ~1 km
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See also: most efficient in Seattle · biggest emitters
How does Boeing Plant 2 - Campus 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 66.0 kBtu/ft² is roughly in line with 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 2.9 kgCO₂e/ft² is about twice the group average of 1.4 kgCO₂e/ft².
At 2,026,324 sq ft, it is about 1125% above the average floor area of 165,352 sq ft for those buildings. It was built in 1992, 24 years later 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 Boeing Plant 2 - Campus's energy performance changed over time?
BuildingCensus holds 10 Seattle disclosures for Boeing Plant 2 - Campus, covering report years 2016–2025. Site EUI moved from 221.7 kBtu/ft² (2016) to 66.0 kBtu/ft² (2025), a 70% decrease. Reported emissions went from 16,662 tCO₂e to 5,227 tCO₂e over the same span (down 69%).
What does a site EUI of 66.0 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. Boeing Plant 2 - Campus's 66.0 kBtu/ft² across 2,026,324 sq ft works out to about 133.7 billion Btu (39,195 MWh-equivalent) in 2025. Its source EUI of 91.8 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 6,776,540 kWh of electricity and 960,960 therms of natural gas for the year.
Which law requires Boeing Plant 2 - Campus to report its energy use?
Boeing Plant 2 - Campus 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:43:2025). 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
- Expedia - Campus· 1,552,140 sq ft · score 86 (A)
- Port Of Seattle- Terminal 91 (Campus)· 1,012,278 sq ft · EUI 81.4 kBtu/ft²
- Grand Hyatt Seattle· 838,117 sq ft · EUI 100.5 kBtu/ft²
- Georgetown Crossroads-Prologis· 733,533 sq ft · EUI 32.4 kBtu/ft²
- Northgate North· 705,535 sq ft · EUI 67.8 kBtu/ft²
- Embassy Suites- Downtown Seattle· 680,770 sq ft · score 91 (A)
- 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 Boeing Plant 2 - Campus's energy grade?
Boeing Plant 2 - Campus did not report an ENERGY STAR score in its 2025 disclosure, but its site energy-use intensity was 66.0 kBtu/ft².
How much energy does Boeing Plant 2 - Campus use?
Its 2025 site energy-use intensity was 66.0 kBtu/ft² (91.8 kBtu/ft² source) across 2,026,324 sq ft, including 6,776,540 kWh of electricity and 960,960 therms of natural gas.
What are Boeing Plant 2 - Campus's carbon emissions?
Boeing Plant 2 - Campus reported 5,227 tCO₂e of greenhouse-gas emissions (2.9 kgCO₂e/ft²) for 2025.
Where is Boeing Plant 2 - Campus?
Boeing Plant 2 - Campus is at 1135 S WEBSTER ST, in Seattle, Washington 98108. Its coordinates are 47.53493, -122.31788 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is Boeing Plant 2 - Campus and when was it built?
Boeing Plant 2 - Campus has 2,026,324 sq ft of gross floor area, as reported in its 2025 disclosure. The disclosure lists 1992 as its year built. It is classed as mixed use property.
Is Boeing Plant 2 - Campus 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, “Boeing Plant 2 - Campus, Seattle, Washington — 2025 benchmarking disclosure”, https://buildingcensus.com/buildings/seattle/boeing-plant-2-campus-cdea679b (data as of October 2, 2026).