At a glance
3131 Elliott Bldg is a 277,486-square-foot office building at 3131 ELLIOTT AVE in Seattle, Washington, built in 1986. In its 2025 Seattle benchmarking disclosure it reported an ENERGY STAR score of 77 out of 100 (grade B), a site energy-use intensity of 42.5 kBtu/ft² and 51 tCO₂e of greenhouse-gas emissions. That score is higher than 36% of the 378 scored office buildings in Seattle.
Seattle Energy Benchmarking Ordinance (SMC 22.920) · reporting year 2025
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 77 (band B) |
| Site EUI | 42.5 kBtu/ft² |
| Source EUI | 119.0 kBtu/ft² |
| GHG emissions | 51 tCO₂e |
| GHG intensity | 0.3 kgCO₂e/ft² |
| Electricity | 2,554,982 kWh |
| Gross floor area | 277,486 sq ft |
| Source record | seattle:708:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | 77 | +5 | 42.5 kBtu/ft² | 51 tCO₂e |
| 2024 | 72 | -8 | 46.1 kBtu/ft² | 55 tCO₂e |
| 2023 | 80 | -3 | 45.0 kBtu/ft² | 55 tCO₂e |
| 2022 | 83 | +2 | 46.2 kBtu/ft² | 57 tCO₂e |
| 2021 | 81 | +4 | 47.7 kBtu/ft² | 59 tCO₂e |
| 2020 | 77 | +1 | 49.9 kBtu/ft² | 62 tCO₂e |
| 2019 | 76 | +10 | 56.8 kBtu/ft² | 67 tCO₂e |
| 2018 | 66 | +15 | 65.3 kBtu/ft² | 72 tCO₂e |
| 2017 | 51 | -12 | 72.0 kBtu/ft² | 80 tCO₂e |
| 2016 | 63 | -3 | 65.9 kBtu/ft² | 74 tCO₂e |
| 2015 | 66 | 66.0 kBtu/ft² | 75 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
- 3131 ELLIOTT AVE
- City
- Seattle
- State
- Washington
- ZIP
- 98121
- Coordinates
- 47.61813, -122.35833
Within ~1 km
Nearby benchmarked buildings
- Climate Pledge Arenascore —
Indoor Arena · 932,000 sq ft
- Olympus Aptsscore 97
Multifamily Housing · 590,869 sq ft
- Third And Broad Bldgscore 94
Office · 396,626 sq ft
- Armory - Seattle Centerscore —
Other · 396,085 sq ft
- 2601 ELLIOTT AVEscore —
Office · 350,310 sq ft
Multifamily Housing · 308,940 sq ft
See also: most efficient in Seattle · biggest emitters
How does 3131 Elliott Bldg compare with other office buildings in Seattle?
The latest disclosures cover 497 office buildings in Seattle, out of 3,871 buildings citywide. 3131 Elliott Bldg's ENERGY STAR score of 77 compares with an average of 76 across the 378 that report a score; it scores higher than 36% of them and lower than 62%. Its site EUI of 42.5 kBtu/ft² is roughly in line with the average of 44.8 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 0.3 kgCO₂e/ft² is about 64% below the group average of 0.7 kgCO₂e/ft².
At 277,486 sq ft, it is about 41% above the average floor area of 196,452 sq ft for those buildings. It was built in 1986, 21 years later than the group's average year built (1965). Across all 24 jurisdictions BuildingCensus covers, the 15,264 office buildings average an ENERGY STAR score of 73 and a site EUI of 59.3 kBtu/ft².
How has 3131 Elliott Bldg's energy performance changed over time?
BuildingCensus holds 11 Seattle disclosures for 3131 Elliott Bldg, covering report years 2015–2025. Its ENERGY STAR score went from 66 in 2015 to 77 in 2025 (+11 points); its best year on file was 2022, at 83. Site EUI moved from 66.0 kBtu/ft² (2015) to 42.5 kBtu/ft² (2025), a 36% decrease. Reported emissions went from 75 tCO₂e to 51 tCO₂e over the same span (down 33%).
What does an ENERGY STAR score of 77 mean?
ENERGY STAR scores run from 1 to 100 and are computed by the EPA's Portfolio Manager as a percentile against similar buildings nationwide, adjusted for climate, size and use: a score of 77 means the building performs better than about 77% of its national peers. BuildingCensus bands the score into report-card grades; 77 falls in band B — above median (70–84). Scores of 75 or higher meet the threshold for ENERGY STAR certification; certification itself is a separate, verified application that the disclosure does not record. In Seattle, 69% of scored buildings are at 75 or above.
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. 3131 Elliott Bldg's 42.5 kBtu/ft² across 277,486 sq ft works out to about 11.8 billion Btu (3,456 MWh-equivalent) in 2025. Its source EUI of 119.0 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 2,554,982 kWh of electricity for the year.
Which law requires 3131 Elliott Bldg to report its energy use?
3131 Elliott 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:708:2025). 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 office buildings in Seattle
- 2323 Elliott - Parking & Office· 275,982 sq ft · EUI 11.5 kBtu/ft²
- Elliott Bay Office Park· 275,734 sq ft · score 97 (A)
- Seattle Children's Hospital Research Building #2· 274,362 sq ft · score 95 (A)
- 705 Union Station· 273,185 sq ft · score 79 (B)
- City Place Ii (Fiona)· 271,071 sq ft · score 97 (A)
- 605 Union Station· 268,130 sq ft · EUI 28.3 kBtu/ft²
- Office buildings in Seattle· 497 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 3131 Elliott Bldg's energy grade?
3131 Elliott Bldg scores 77 out of 100 on ENERGY STAR — band B, above median (70–84) — in its 2025 Seattle disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does 3131 Elliott Bldg use?
Its 2025 site energy-use intensity was 42.5 kBtu/ft² (119.0 kBtu/ft² source) across 277,486 sq ft, including 2,554,982 kWh of electricity.
What are 3131 Elliott Bldg's carbon emissions?
3131 Elliott Bldg reported 51 tCO₂e of greenhouse-gas emissions (0.3 kgCO₂e/ft²) for 2025.
Where is 3131 Elliott Bldg?
3131 Elliott Bldg is at 3131 ELLIOTT AVE, in Seattle, Washington 98121. Its coordinates are 47.61813, -122.35833 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is 3131 Elliott Bldg and when was it built?
3131 Elliott Bldg has 277,486 sq ft of gross floor area, as reported in its 2025 disclosure. The disclosure lists 1986 as its year built. It is classed as office.
Is 3131 Elliott 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, “3131 Elliott Bldg, Seattle, Washington — 2025 benchmarking disclosure”, https://buildingcensus.com/buildings/seattle/3131-elliott-bldg-d8ad332e (data as of October 2, 2026).