Gateway Plaza Office Bldg
Laboratory in Seattle, WA · 13751 LAKE CITY WAY NE · 98125
At a glance
Gateway Plaza Office Bldg is a 33,580-square-foot laboratory building at 13751 LAKE CITY WAY NE in Seattle, Washington, built in 1985. In its 2025 Seattle benchmarking disclosure it reported a site energy-use intensity of 86.5 kBtu/ft² and 10 tCO₂e of greenhouse-gas emissions.
Seattle Energy Benchmarking Ordinance (SMC 22.920) · reporting year 2025
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 86.5 kBtu/ft² |
| Source EUI | 242.2 kBtu/ft² |
| GHG emissions | 10 tCO₂e |
| GHG intensity | 0.5 kgCO₂e/ft² |
| Electricity | 522,066 kWh |
| Gross floor area | 33,580 sq ft |
| Source record | seattle:23331:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | — | 86.5 kBtu/ft² | 10 tCO₂e | |
| 2024 | — | 84.1 kBtu/ft² | 10 tCO₂e | |
| 2023 | — | 83.0 kBtu/ft² | 10 tCO₂e | |
| 2022 | — | 80.2 kBtu/ft² | 10 tCO₂e | |
| 2021 | — | — | — | |
| 2020 | 96 | +4 | 21.7 kBtu/ft² | 3 tCO₂e |
| 2019 | 92 | -6 | 25.6 kBtu/ft² | 3 tCO₂e |
| 2018 | 98 | +8 | 20.0 kBtu/ft² | 2 tCO₂e |
| 2017 | 90 | -10 | 24.7 kBtu/ft² | 3 tCO₂e |
| 2016 | 100 | +12 | 19.9 kBtu/ft² | 2 tCO₂e |
| 2015 | 88 | 33.8 kBtu/ft² | 4 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
- 13751 LAKE CITY WAY NE
- City
- Seattle
- State
- Washington
- ZIP
- 98125
- Coordinates
- 47.72986, -122.29278
Within ~1 km
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See also: most efficient in Seattle · biggest emitters
How does Gateway Plaza Office Bldg 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 86.5 kBtu/ft² is about half of the average of 178.6 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 0.5 kgCO₂e/ft² is about 89% below the group average of 4.6 kgCO₂e/ft².
At 33,580 sq ft, it is about 83% below the average floor area of 202,547 sq ft for those buildings. Its 1985 construction date is close to 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 Gateway Plaza Office Bldg's energy performance changed over time?
BuildingCensus holds 11 Seattle disclosures for Gateway Plaza Office Bldg, covering report years 2015–2025. Its ENERGY STAR score went from 88 in 2015 to 96 in 2020 (+8 points); its best year on file was 2016, at 100. Site EUI moved from 33.8 kBtu/ft² (2015) to 86.5 kBtu/ft² (2025), an 156% increase. Reported emissions went from 4 tCO₂e to 10 tCO₂e over the same span (up 158%).
What does a site EUI of 86.5 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. Gateway Plaza Office Bldg's 86.5 kBtu/ft² across 33,580 sq ft works out to about 2.9 billion Btu (851 MWh-equivalent) in 2025. Its source EUI of 242.2 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 522,066 kWh of electricity for the year.
Which law requires Gateway Plaza Office Bldg to report its energy use?
Gateway Plaza Office Bldg 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:23331:2025). 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
- Bowman Building· 33,576 sq ft · EUI 223.8 kBtu/ft²
- 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 Gateway Plaza Office Bldg's energy grade?
Gateway Plaza Office Bldg did not report an ENERGY STAR score in its 2025 disclosure, but its site energy-use intensity was 86.5 kBtu/ft².
How much energy does Gateway Plaza Office Bldg use?
Its 2025 site energy-use intensity was 86.5 kBtu/ft² (242.2 kBtu/ft² source) across 33,580 sq ft, including 522,066 kWh of electricity.
What are Gateway Plaza Office Bldg's carbon emissions?
Gateway Plaza Office Bldg reported 10 tCO₂e of greenhouse-gas emissions (0.5 kgCO₂e/ft²) for 2025.
Where is Gateway Plaza Office Bldg?
Gateway Plaza Office Bldg is at 13751 LAKE CITY WAY NE, in Seattle, Washington 98125. Its coordinates are 47.72986, -122.29278 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is Gateway Plaza Office Bldg and when was it built?
Gateway Plaza Office Bldg has 33,580 sq ft of gross floor area, as reported in its 2025 disclosure. The disclosure lists 1985 as its year built. It is classed as laboratory.
Is Gateway Plaza Office Bldg 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, “Gateway Plaza Office Bldg, Seattle, Washington — 2025 benchmarking disclosure”, https://buildingcensus.com/buildings/seattle/gateway-plaza-office-bldg-d71bcb35 (data as of October 2, 2026).