Boeing South Park Campus Report
Mixed Use Property in Seattle, WA · 1420 S TRENTON ST · 98108
At a glance
Boeing South Park Campus Report is a 334,368-square-foot mixed use property building at 1420 S TRENTON ST in Seattle, Washington, built in 1980. In its 2025 Seattle benchmarking disclosure it reported a site energy-use intensity of 134.2 kBtu/ft² and 578 tCO₂e of greenhouse-gas emissions.
Seattle Energy Benchmarking Ordinance (SMC 22.920) · reporting year 2025
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 134.2 kBtu/ft² |
| Source EUI | 339.7 kBtu/ft² |
| GHG emissions | 578 tCO₂e |
| GHG intensity | 1.7 kgCO₂e/ft² |
| Electricity | 11,133,180 kWh |
| Natural gas | 68,877 therms |
| Gross floor area | 334,368 sq ft |
| Source record | seattle:261:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | — | 134.2 kBtu/ft² | 578 tCO₂e | |
| 2024 | — | 128.4 kBtu/ft² | 544 tCO₂e | |
| 2023 | — | 144.1 kBtu/ft² | 588 tCO₂e | |
| 2022 | — | 147.5 kBtu/ft² | 611 tCO₂e | |
| 2021 | — | 138.8 kBtu/ft² | 584 tCO₂e | |
| 2020 | — | 137.7 kBtu/ft² | 629 tCO₂e | |
| 2019 | — | 148.3 kBtu/ft² | 634 tCO₂e | |
| 2018 | — | 148.3 kBtu/ft² | 622 tCO₂e | |
| 2017 | — | 151.2 kBtu/ft² | 629 tCO₂e | |
| 2016 | — | 159.9 kBtu/ft² | 695 tCO₂e | |
| 2015 | — | 154.5 kBtu/ft² | 653 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
- 1420 S TRENTON ST
- City
- Seattle
- State
- Washington
- ZIP
- 98108
- Coordinates
- 47.52429, -122.31234
Within ~1 km
Nearby benchmarked buildings
Other · 49,770 sq ft
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- Samson Tug & Bargescore 29
Non-Refrigerated Warehouse · 22,000 sq ft
See also: most efficient in Seattle · biggest emitters
How does Boeing South Park Campus Report 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 134.2 kBtu/ft² is about twice the average of 68.7 kBtu/ft² — it uses more energy per square foot than the typical building in that group. Its emissions intensity of 1.7 kgCO₂e/ft² is about 24% above the group average of 1.4 kgCO₂e/ft².
At 334,368 sq ft, it is about twice the average floor area of 165,352 sq ft for those buildings. It was built in 1980, 12 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 South Park Campus Report's energy performance changed over time?
BuildingCensus holds 11 Seattle disclosures for Boeing South Park Campus Report, covering report years 2015–2025. Site EUI moved from 154.5 kBtu/ft² (2015) to 134.2 kBtu/ft² (2025), a 13% decrease. Reported emissions went from 653 tCO₂e to 578 tCO₂e over the same span (down 12%).
What does a site EUI of 134.2 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. Boeing South Park Campus Report's 134.2 kBtu/ft² across 334,368 sq ft works out to about 44.9 billion Btu (13,151 MWh-equivalent) in 2025. Its source EUI of 339.7 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 11,133,180 kWh of electricity and 68,877 therms of natural gas for the year.
Which law requires Boeing South Park Campus Report to report its energy use?
Boeing South Park Campus Report 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:261:2025). 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
- Fred Meyer Greenwood· 314,958 sq ft · score 86 (A)
- Washington Athletic Club· 305,548 sq ft · EUI 96.4 kBtu/ft²
- Pacific Tower· 304,052 sq ft · score 91 (A)
- 507 Northgate· 295,410 sq ft · score 21 (D)
- Northlake Commons· 294,150 sq ft · EUI 16.2 kBtu/ft²
- Block 25w - Google· 292,926 sq ft · score 92 (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 South Park Campus Report's energy grade?
Boeing South Park Campus Report did not report an ENERGY STAR score in its 2025 disclosure, but its site energy-use intensity was 134.2 kBtu/ft².
How much energy does Boeing South Park Campus Report use?
Its 2025 site energy-use intensity was 134.2 kBtu/ft² (339.7 kBtu/ft² source) across 334,368 sq ft, including 11,133,180 kWh of electricity and 68,877 therms of natural gas.
What are Boeing South Park Campus Report's carbon emissions?
Boeing South Park Campus Report reported 578 tCO₂e of greenhouse-gas emissions (1.7 kgCO₂e/ft²) for 2025.
Where is Boeing South Park Campus Report?
Boeing South Park Campus Report is at 1420 S TRENTON ST, in Seattle, Washington 98108. Its coordinates are 47.52429, -122.31234 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is Boeing South Park Campus Report and when was it built?
Boeing South Park Campus Report has 334,368 sq ft of gross floor area, as reported in its 2025 disclosure. The disclosure lists 1980 as its year built. It is classed as mixed use property.
Is Boeing South Park Campus Report 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 South Park Campus Report, Seattle, Washington — 2025 benchmarking disclosure”, https://buildingcensus.com/buildings/seattle/boeing-south-park-campus-report-51cb7ef3 (data as of October 2, 2026).