At a glance
Third And Broad Bldg is a 396,626-square-foot office building at 2901 3RD AVE in Seattle, Washington, built in 1982. In its 2025 Seattle benchmarking disclosure it reported an ENERGY STAR score of 94 out of 100 (grade A), a site energy-use intensity of 26.7 kBtu/ft² and 43 tCO₂e of greenhouse-gas emissions. That score is higher than 81% 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 | 94 (band A) |
| Site EUI | 26.7 kBtu/ft² |
| Source EUI | 74.6 kBtu/ft² |
| GHG emissions | 43 tCO₂e |
| GHG intensity | 0.1 kgCO₂e/ft² |
| Electricity | 2,150,339 kWh |
| Gross floor area | 396,626 sq ft |
| Source record | seattle:375:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | 94 | +1 | 26.7 kBtu/ft² | 43 tCO₂e |
| 2024 | 93 | +2 | 30.1 kBtu/ft² | 48 tCO₂e |
| 2023 | 91 | +1 | 32.3 kBtu/ft² | 52 tCO₂e |
| 2022 | 90 | ±0 | 33.5 kBtu/ft² | 54 tCO₂e |
| 2021 | 90 | -2 | 34.3 kBtu/ft² | 55 tCO₂e |
| 2020 | 92 | +4 | 34.2 kBtu/ft² | 57 tCO₂e |
| 2019 | 88 | +5 | 45.0 kBtu/ft² | 73 tCO₂e |
| 2018 | 83 | +33 | 55.2 kBtu/ft² | 88 tCO₂e |
| 2017 | 50 | -14 | 72.2 kBtu/ft² | 115 tCO₂e |
| 2016 | 64 | -2 | 74.3 kBtu/ft² | 118 tCO₂e |
| 2015 | 66 | 72.8 kBtu/ft² | 120 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
- 2901 3RD AVE
- City
- Seattle
- State
- Washington
- ZIP
- 98121
- Coordinates
- 47.61820, -122.35200
Within ~1 km
Nearby benchmarked buildings
- Climate Pledge Arenascore —
Indoor Arena · 932,000 sq ft
- Bill & Melinda Gates Foundationscore 73
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- Olympus Aptsscore 97
Multifamily Housing · 590,869 sq ft
Mixed Use Property · 524,610 sq ft
- Spire Condosscore 87
Multifamily Housing · 400,000 sq ft
- Avalon Belltown Towersscore 72
Multifamily Housing · 397,034 sq ft
See also: most efficient in Seattle · biggest emitters
How does Third And Broad Bldg compare with other office buildings in Seattle?
The latest disclosures cover 497 office buildings in Seattle, out of 3,871 buildings citywide. Third And Broad Bldg's ENERGY STAR score of 94 compares with an average of 76 across the 378 that report a score; it scores higher than 81% of them and lower than 16%. Its site EUI of 26.7 kBtu/ft² is about 40% below 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 0.1 kgCO₂e/ft² is about 79% below the group average of 0.7 kgCO₂e/ft².
At 396,626 sq ft, it is about twice the average floor area of 196,452 sq ft for those buildings. It was built in 1982, 17 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 Third And Broad Bldg's energy performance changed over time?
BuildingCensus holds 11 Seattle disclosures for Third And Broad Bldg, covering report years 2015–2025. Its ENERGY STAR score went from 66 in 2015 to 94 in 2025 (+28 points). Site EUI moved from 72.8 kBtu/ft² (2015) to 26.7 kBtu/ft² (2025), a 63% decrease. Reported emissions went from 120 tCO₂e to 43 tCO₂e over the same span (down 64%).
What does an ENERGY STAR score of 94 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 94 means the building performs better than about 94% of its national peers. BuildingCensus bands the score into report-card grades; 94 falls in band A — high performer (85–100). 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. Third And Broad Bldg's 26.7 kBtu/ft² across 396,626 sq ft works out to about 10.6 billion Btu (3,104 MWh-equivalent) in 2025. Its source EUI of 74.6 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 2,150,339 kWh of electricity for the year.
Which law requires Third And Broad Bldg to report its energy use?
Third And Broad 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:375:2025). 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
- Millennium Tower· 390,390 sq ft · score 82 (B)
- Georgetown Squared· 390,295 sq ft · score 74 (B)
- Dexter Horton Building· 388,934 sq ft · score 92 (A)
- Market Place Tower· 386,321 sq ft · EUI 59.1 kBtu/ft²
- Exchange Building· 384,302 sq ft · score 90 (A)
- 720 Olive Bldg· 383,515 sq ft · score 73 (B)
- 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 Third And Broad Bldg's energy grade?
Third And Broad Bldg scores 94 out of 100 on ENERGY STAR — band A, high performer (85–100) — in its 2025 Seattle disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does Third And Broad Bldg use?
Its 2025 site energy-use intensity was 26.7 kBtu/ft² (74.6 kBtu/ft² source) across 396,626 sq ft, including 2,150,339 kWh of electricity.
What are Third And Broad Bldg's carbon emissions?
Third And Broad Bldg reported 43 tCO₂e of greenhouse-gas emissions (0.1 kgCO₂e/ft²) for 2025.
Where is Third And Broad Bldg?
Third And Broad Bldg is at 2901 3RD AVE, in Seattle, Washington 98121. Its coordinates are 47.61820, -122.35200 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is Third And Broad Bldg and when was it built?
Third And Broad Bldg has 396,626 sq ft of gross floor area, as reported in its 2025 disclosure. The disclosure lists 1982 as its year built. It is classed as office.
Is Third And Broad 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, “Third And Broad Bldg, Seattle, Washington — 2025 benchmarking disclosure”, https://buildingcensus.com/buildings/seattle/third-and-broad-bldg-f4570c8a (data as of October 2, 2026).