Bowman Building
Laboratory in Seattle, WA · 4625 UNION BAY PL NE · 98105
At a glance
Bowman Building is a 33,576-square-foot laboratory building at 4625 UNION BAY PL NE in Seattle, Washington, built in 1980. In its 2025 Seattle benchmarking disclosure it reported a site energy-use intensity of 223.8 kBtu/ft² and 123 tCO₂e of greenhouse-gas emissions.
Seattle Energy Benchmarking Ordinance (SMC 22.920) · reporting year 2025
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 223.8 kBtu/ft² |
| Source EUI | 532.6 kBtu/ft² |
| GHG emissions | 123 tCO₂e |
| GHG intensity | 3.6 kgCO₂e/ft² |
| Electricity | 1,680,653 kWh |
| Natural gas | 18,105 therms |
| Gross floor area | 33,576 sq ft |
| Source record | seattle:21920:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | — | 223.8 kBtu/ft² | 123 tCO₂e | |
| 2024 | — | 163.3 kBtu/ft² | 108 tCO₂e | |
| 2023 | — | 149.1 kBtu/ft² | 81 tCO₂e | |
| 2022 | — | 169.7 kBtu/ft² | 123 tCO₂e | |
| 2021 | — | 145.0 kBtu/ft² | 107 tCO₂e | |
| 2020 | — | 95.8 kBtu/ft² | 104 tCO₂e | |
| 2019 | — | 99.4 kBtu/ft² | 96 tCO₂e | |
| 2018 | 1 | -54 | 91.7 kBtu/ft² | 77 tCO₂e |
| 2017 | 55 | -9 | 65.1 kBtu/ft² | 106 tCO₂e |
| 2016 | 64 | +42 | 38.0 kBtu/ft² | 49 tCO₂e |
| 2015 | 22 | 61.6 kBtu/ft² | 72 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
- 4625 UNION BAY PL NE
- City
- Seattle
- State
- Washington
- ZIP
- 98105
- Coordinates
- 47.66294, -122.29521
Within ~1 km
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See also: most efficient in Seattle · biggest emitters
How does Bowman Building compare with other laboratory buildings in Seattle?
The latest disclosures cover 32 laboratory buildings in Seattle, out of 3,871 buildings citywide. Its site EUI of 223.8 kBtu/ft² is about 25% above the average of 178.6 kBtu/ft² — it uses more energy per square foot than the typical building in that group. Its emissions intensity of 3.6 kgCO₂e/ft² is about 21% below the group average of 4.6 kgCO₂e/ft².
At 33,576 sq ft, it is about 83% below the average floor area of 202,547 sq ft for those buildings. It was built in 1980, 6 years earlier than the group's average year built (1986). Across all 24 jurisdictions BuildingCensus covers, the 795 laboratory buildings average an ENERGY STAR score of 29 and a site EUI of 231.7 kBtu/ft².
How has Bowman Building's energy performance changed over time?
BuildingCensus holds 11 Seattle disclosures for Bowman Building, covering report years 2015–2025. Its ENERGY STAR score went from 22 in 2015 to 1 in 2018 (-21 points); its best year on file was 2016, at 64. Site EUI moved from 61.6 kBtu/ft² (2015) to 223.8 kBtu/ft² (2025), an 263% increase. Reported emissions went from 72 tCO₂e to 123 tCO₂e over the same span (up 72%).
What does a site EUI of 223.8 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. Bowman Building's 223.8 kBtu/ft² across 33,576 sq ft works out to about 7.5 billion Btu (2,202 MWh-equivalent) in 2025. Its source EUI of 532.6 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 1,680,653 kWh of electricity and 18,105 therms of natural gas for the year.
Which law requires Bowman Building to report its energy use?
Bowman 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:21920:2025). 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 laboratory buildings in Seattle
- Airport Way Ctr - Bldg E· 23,100 sq ft · EUI 145.5 kBtu/ft²
- Laboratory buildings in Seattle· 32 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 Bowman Building's energy grade?
Bowman Building did not report an ENERGY STAR score in its 2025 disclosure, but its site energy-use intensity was 223.8 kBtu/ft².
How much energy does Bowman Building use?
Its 2025 site energy-use intensity was 223.8 kBtu/ft² (532.6 kBtu/ft² source) across 33,576 sq ft, including 1,680,653 kWh of electricity and 18,105 therms of natural gas.
What are Bowman Building's carbon emissions?
Bowman Building reported 123 tCO₂e of greenhouse-gas emissions (3.6 kgCO₂e/ft²) for 2025.
Where is Bowman Building?
Bowman Building is at 4625 UNION BAY PL NE, in Seattle, Washington 98105. Its coordinates are 47.66294, -122.29521 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is Bowman Building and when was it built?
Bowman Building has 33,576 sq ft of gross floor area, as reported in its 2025 disclosure. The disclosure lists 1980 as its year built. It is classed as laboratory.
Is Bowman 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, “Bowman Building, Seattle, Washington — 2025 benchmarking disclosure”, https://buildingcensus.com/buildings/seattle/bowman-building-10f2478c (data as of October 2, 2026).