At a glance
901 Fifth Avenue is a 711,611-square-foot office building at 901 5TH AVE in Seattle, Washington, built in 1973. In its 2025 Seattle benchmarking disclosure it reported an ENERGY STAR score of 78 out of 100 (grade B), a site energy-use intensity of 55.6 kBtu/ft² and 240 tCO₂e of greenhouse-gas emissions. That score is higher than 38% 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 | 78 (band B) |
| Site EUI | 55.6 kBtu/ft² |
| Source EUI | 154.0 kBtu/ft² |
| GHG emissions | 240 tCO₂e |
| GHG intensity | 0.4 kgCO₂e/ft² |
| Electricity | 9,589,532 kWh |
| Gross floor area | 711,611 sq ft |
| Source record | seattle:355:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | 78 | +2 | 55.6 kBtu/ft² | 240 tCO₂e |
| 2024 | 76 | +1 | 59.3 kBtu/ft² | 281 tCO₂e |
| 2023 | 75 | -13 | 59.1 kBtu/ft² | 262 tCO₂e |
| 2022 | 88 | +2 | 54.7 kBtu/ft² | 288 tCO₂e |
| 2021 | 86 | +2 | 58.4 kBtu/ft² | 295 tCO₂e |
| 2020 | 84 | -1 | 60.6 kBtu/ft² | 306 tCO₂e |
| 2019 | 85 | +2 | 58.9 kBtu/ft² | 303 tCO₂e |
| 2018 | 83 | +3 | 62.5 kBtu/ft² | 320 tCO₂e |
| 2017 | 80 | +52 | 62.8 kBtu/ft² | 340 tCO₂e |
| 2016 | 28 | 115.9 kBtu/ft² | 470 tCO₂e | |
| 2015 | — | — | 216 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
- 901 5TH AVE
- City
- Seattle
- State
- Washington
- ZIP
- 98104
- Coordinates
- 47.60616, -122.33165
Within ~1 km
Nearby benchmarked buildings
- Columbia Centerscore 90
Office · 1,952,220 sq ft
Hospital (General Medical & Surgical) · 1,926,841 sq ft
- Seattle Convention Centerscore —
Convention Center · 1,842,925 sq ft
- Two Union Squarescore 96
Office · 1,605,578 sq ft
- Russell Investments Centerscore 92
Office · 1,592,914 sq ft
- Us Bank Centerscore 87
Office · 1,536,606 sq ft
See also: most efficient in Seattle · biggest emitters
How does 901 Fifth Avenue compare with other office buildings in Seattle?
The latest disclosures cover 497 office buildings in Seattle, out of 3,871 buildings citywide. 901 Fifth Avenue's ENERGY STAR score of 78 compares with an average of 76 across the 378 that report a score; it scores higher than 38% of them and lower than 60%. Its site EUI of 55.6 kBtu/ft² is about 24% above the average of 44.8 kBtu/ft² — it uses more energy per square foot than the typical building in that group. Its emissions intensity of 0.4 kgCO₂e/ft² is about 43% below the group average of 0.7 kgCO₂e/ft².
At 711,611 sq ft, it is about 262% above the average floor area of 196,452 sq ft for those buildings. It was built in 1973, 8 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 901 Fifth Avenue's energy performance changed over time?
BuildingCensus holds 11 Seattle disclosures for 901 Fifth Avenue, covering report years 2015–2025. Its ENERGY STAR score went from 28 in 2016 to 78 in 2025 (+50 points); its best year on file was 2022, at 88. Site EUI moved from 115.9 kBtu/ft² (2016) to 55.6 kBtu/ft² (2025), a 52% decrease. Reported emissions went from 216 tCO₂e to 240 tCO₂e over the same span (up 11%).
What does an ENERGY STAR score of 78 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 78 means the building performs better than about 78% of its national peers. BuildingCensus bands the score into report-card grades; 78 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. 901 Fifth Avenue's 55.6 kBtu/ft² across 711,611 sq ft works out to about 39.6 billion Btu (11,596 MWh-equivalent) in 2025. Its source EUI of 154.0 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 9,589,532 kWh of electricity for the year.
Which law requires 901 Fifth Avenue to report its energy use?
901 Fifth Avenue 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:355:2025). 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
- 2nd & Seneca Blds· 635,303 sq ft · score 95 (A)
- Block 31 - Google· 614,956 sq ft · score 89 (A)
- Amazon Phase Vi - Nessie And Bigfoot· 593,200 sq ft · score 95 (A)
- 1000 2nd Avenue Building· 589,921 sq ft · score 84 (B)
- City Place Iv (Ruby/Dawson)· 571,329 sq ft · score 92 (A)
- Fhcrc - Arnold Bldg· 560,516 sq ft · score 69 (C)
- 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 901 Fifth Avenue's energy grade?
901 Fifth Avenue scores 78 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 901 Fifth Avenue use?
Its 2025 site energy-use intensity was 55.6 kBtu/ft² (154.0 kBtu/ft² source) across 711,611 sq ft, including 9,589,532 kWh of electricity.
What are 901 Fifth Avenue's carbon emissions?
901 Fifth Avenue reported 240 tCO₂e of greenhouse-gas emissions (0.4 kgCO₂e/ft²) for 2025.
Where is 901 Fifth Avenue?
901 Fifth Avenue is at 901 5TH AVE, in Seattle, Washington 98104. Its coordinates are 47.60616, -122.33165 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is 901 Fifth Avenue and when was it built?
901 Fifth Avenue has 711,611 sq ft of gross floor area, as reported in its 2025 disclosure. The disclosure lists 1973 as its year built. It is classed as office.
Is 901 Fifth Avenue 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, “901 Fifth Avenue, Seattle, Washington — 2025 benchmarking disclosure”, https://buildingcensus.com/buildings/seattle/901-fifth-avenue-81e6e936 (data as of October 2, 2026).