Eleven 65
Laboratory in Seattle, WA · 1165 EASTLAKE AVE E · 98109
At a glance
Eleven 65 is a 132,347-square-foot laboratory building at 1165 EASTLAKE AVE E in Seattle, Washington, built in 2020. In its 2025 Seattle benchmarking disclosure it reported a site energy-use intensity of 143.5 kBtu/ft² and 239 tCO₂e of greenhouse-gas emissions.
Seattle Energy Benchmarking Ordinance (SMC 22.920) · reporting year 2025
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 143.5 kBtu/ft² |
| Source EUI | 333.4 kBtu/ft² |
| GHG emissions | 239 tCO₂e |
| GHG intensity | 2.6 kgCO₂e/ft² |
| Electricity | 2,801,462 kWh |
| Natural gas | 35,696 therms |
| Gross floor area | 132,347 sq ft |
| Source record | seattle:21651:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | — | 143.5 kBtu/ft² | 239 tCO₂e | |
| 2024 | — | 157.4 kBtu/ft² | 293 tCO₂e | |
| 2023 | 39 | 122.2 kBtu/ft² | 271 tCO₂e | |
| 2022 | — | 72.4 kBtu/ft² | 293 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
- 1165 EASTLAKE AVE E
- City
- Seattle
- State
- Washington
- ZIP
- 98109
- Coordinates
- 47.63057, -122.32803
Within ~1 km
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See also: most efficient in Seattle · biggest emitters
How does Eleven 65 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 143.5 kBtu/ft² is about 20% below 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 2.6 kgCO₂e/ft² is about 43% below the group average of 4.6 kgCO₂e/ft².
At 132,347 sq ft, it is about 35% below the average floor area of 202,547 sq ft for those buildings. It was built in 2020, 34 years later 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 Eleven 65's energy performance changed over time?
BuildingCensus holds 4 Seattle disclosures for Eleven 65, covering report years 2022–2025. Site EUI moved from 72.4 kBtu/ft² (2022) to 143.5 kBtu/ft² (2025), an 98% increase. Reported emissions went from 293 tCO₂e to 239 tCO₂e over the same span (down 18%).
What does a site EUI of 143.5 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. Eleven 65's 143.5 kBtu/ft² across 132,347 sq ft works out to about 19 billion Btu (5,566 MWh-equivalent) in 2025. Its source EUI of 333.4 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 2,801,462 kWh of electricity and 35,696 therms of natural gas for the year.
Which law requires Eleven 65 to report its energy use?
Eleven 65 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:21651:2025). 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
- 1208 Eastlake Ave E (Dendreon)· 128,408 sq ft · EUI 342.2 kBtu/ft²
- Brotman Building D: UW Medicine Research· 102,235 sq ft · EUI 248.4 kBtu/ft²
- Airport Way Ctr - Bldg A· 99,122 sq ft · EUI 124.2 kBtu/ft²
- 1100 Olive Building Targeted Genetics· 66,588 sq ft · EUI 102.6 kBtu/ft²
- Rosen Building· 60,375 sq ft · EUI 195.6 kBtu/ft²
- 3000/3018 Western· 49,249 sq ft · EUI 207.0 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 Eleven 65's energy grade?
Eleven 65 did not report an ENERGY STAR score in its 2025 disclosure, but its site energy-use intensity was 143.5 kBtu/ft².
How much energy does Eleven 65 use?
Its 2025 site energy-use intensity was 143.5 kBtu/ft² (333.4 kBtu/ft² source) across 132,347 sq ft, including 2,801,462 kWh of electricity and 35,696 therms of natural gas.
What are Eleven 65's carbon emissions?
Eleven 65 reported 239 tCO₂e of greenhouse-gas emissions (2.6 kgCO₂e/ft²) for 2025.
Where is Eleven 65?
Eleven 65 is at 1165 EASTLAKE AVE E, in Seattle, Washington 98109. Its coordinates are 47.63057, -122.32803 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is Eleven 65 and when was it built?
Eleven 65 has 132,347 sq ft of gross floor area, as reported in its 2025 disclosure. The disclosure lists 2020 as its year built. It is classed as laboratory.
Is Eleven 65 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, “Eleven 65, Seattle, Washington — 2025 benchmarking disclosure”, https://buildingcensus.com/buildings/seattle/eleven-65-a3805cc8 (data as of October 2, 2026).