At a glance
First West Building is a 94,278-square-foot office building at 200 1ST AVE W in Seattle, Washington, built in 1971. In its 2025 Seattle benchmarking disclosure it reported an ENERGY STAR score of 83 out of 100 (grade B), a site energy-use intensity of 33.5 kBtu/ft² and 15 tCO₂e of greenhouse-gas emissions. That score is higher than 49% 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 | 83 (band B) |
| Site EUI | 33.5 kBtu/ft² |
| Source EUI | 93.8 kBtu/ft² |
| GHG emissions | 15 tCO₂e |
| GHG intensity | 0.2 kgCO₂e/ft² |
| Electricity | 767,637 kWh |
| Gross floor area | 94,278 sq ft |
| Source record | seattle:493:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | 83 | -3 | 33.5 kBtu/ft² | 15 tCO₂e |
| 2024 | 86 | -3 | 36.3 kBtu/ft² | 40 tCO₂e |
| 2023 | 89 | ±0 | 39.6 kBtu/ft² | 55 tCO₂e |
| 2022 | 89 | +2 | 42.1 kBtu/ft² | 65 tCO₂e |
| 2021 | 87 | +3 | 42.1 kBtu/ft² | 56 tCO₂e |
| 2020 | 84 | -1 | 41.9 kBtu/ft² | 53 tCO₂e |
| 2019 | 85 | +3 | 43.5 kBtu/ft² | 55 tCO₂e |
| 2018 | 82 | +11 | 46.3 kBtu/ft² | 53 tCO₂e |
| 2017 | 71 | -4 | 64.5 kBtu/ft² | 73 tCO₂e |
| 2016 | 75 | -2 | 50.0 kBtu/ft² | 20 tCO₂e |
| 2015 | 77 | 44.1 kBtu/ft² | 18 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
- 200 1ST AVE W
- City
- Seattle
- State
- Washington
- ZIP
- 98119
- Coordinates
- 47.62014, -122.35768
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
- Griffis Belltown Apartmentsscore —
Multifamily Housing · 320,651 sq ft
See also: most efficient in Seattle · biggest emitters
How does First West Building compare with other office buildings in Seattle?
The latest disclosures cover 497 office buildings in Seattle, out of 3,871 buildings citywide. First West Building's ENERGY STAR score of 83 compares with an average of 76 across the 378 that report a score; it scores higher than 49% of them and lower than 49%. Its site EUI of 33.5 kBtu/ft² is about 25% 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 0.2 kgCO₂e/ft² is about 73% below the group average of 0.7 kgCO₂e/ft².
At 94,278 sq ft, it is about half of the average floor area of 196,452 sq ft for those buildings. It was built in 1971, 6 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 First West Building's energy performance changed over time?
BuildingCensus holds 11 Seattle disclosures for First West Building, covering report years 2015–2025. Its ENERGY STAR score went from 77 in 2015 to 83 in 2025 (+6 points); its best year on file was 2022, at 89. Site EUI moved from 44.1 kBtu/ft² (2015) to 33.5 kBtu/ft² (2025), a 24% decrease. Reported emissions went from 18 tCO₂e to 15 tCO₂e over the same span (down 17%).
What does an ENERGY STAR score of 83 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 83 means the building performs better than about 83% of its national peers. BuildingCensus bands the score into report-card grades; 83 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. First West Building's 33.5 kBtu/ft² across 94,278 sq ft works out to about 3.2 billion Btu (926 MWh-equivalent) in 2025. Its source EUI of 93.8 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 767,637 kWh of electricity for the year.
Which law requires First West Building to report its energy use?
First West 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:493:2025). 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
- Ballard Building· 94,033 sq ft · score 78 (B)
- Mckinstry Headquarters· 93,610 sq ft · score 80 (B)
- Rainier Bottling Plant· 92,051 sq ft · score 100 (A)
- 45th Street Plaza· 91,706 sq ft · score 47 (D)
- 2701 Eastlake· 91,551 sq ft · score 97 (A)
- OLYMPIC BLOCK BUILDING-COMMERCIAL· 91,466 sq ft · score 79 (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 First West Building's energy grade?
First West Building scores 83 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 First West Building use?
Its 2025 site energy-use intensity was 33.5 kBtu/ft² (93.8 kBtu/ft² source) across 94,278 sq ft, including 767,637 kWh of electricity.
What are First West Building's carbon emissions?
First West Building reported 15 tCO₂e of greenhouse-gas emissions (0.2 kgCO₂e/ft²) for 2025.
Where is First West Building?
First West Building is at 200 1ST AVE W, in Seattle, Washington 98119. Its coordinates are 47.62014, -122.35768 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is First West Building and when was it built?
First West Building has 94,278 sq ft of gross floor area, as reported in its 2025 disclosure. The disclosure lists 1971 as its year built. It is classed as office.
Is First West 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, “First West Building, Seattle, Washington — 2025 benchmarking disclosure”, https://buildingcensus.com/buildings/seattle/first-west-building-0cd31f1e (data as of October 2, 2026).