At a glance
American Hotel Hostel is a 33,018-square-foot hotel at 520 S KING ST in Seattle, Washington, built in 1925. In its 2025 Seattle benchmarking disclosure it reported an ENERGY STAR score of 63 out of 100 (grade C), a site energy-use intensity of 131.9 kBtu/ft² and 164 tCO₂e of greenhouse-gas emissions. That score is higher than 21% of the 78 scored hotel buildings in Seattle.
Seattle Energy Benchmarking Ordinance (SMC 22.920) · reporting year 2025
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 63 (band C) |
| Site EUI | 131.9 kBtu/ft² |
| Source EUI | 210.9 kBtu/ft² |
| GHG emissions | 164 tCO₂e |
| GHG intensity | 5.0 kgCO₂e/ft² |
| Electricity | 400,252 kWh |
| Natural gas | 29,889 therms |
| Gross floor area | 33,018 sq ft |
| Source record | seattle:26728:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | 63 | +7 | 131.9 kBtu/ft² | 164 tCO₂e |
| 2024 | 56 | -2 | 138.4 kBtu/ft² | 173 tCO₂e |
| 2023 | 58 | +21 | 133.9 kBtu/ft² | 162 tCO₂e |
| 2022 | 37 | -40 | 175.1 kBtu/ft² | 234 tCO₂e |
| 2021 | 77 | +2 | 104.2 kBtu/ft² | 119 tCO₂e |
| 2020 | 75 | +21 | 115.4 kBtu/ft² | 136 tCO₂e |
| 2019 | 54 | +3 | 150.8 kBtu/ft² | 193 tCO₂e |
| 2018 | 51 | +6 | 152.8 kBtu/ft² | 193 tCO₂e |
| 2017 | 45 | -4 | 177.5 kBtu/ft² | 194 tCO₂e |
| 2016 | 49 | +3 | 165.5 kBtu/ft² | 171 tCO₂e |
| 2015 | 46 | 167.3 kBtu/ft² | 174 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
- 520 S KING ST
- City
- Seattle
- State
- Washington
- ZIP
- 98104
- Coordinates
- 47.59850, -122.32677
Within ~1 km
Nearby benchmarked buildings
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- Centurylink Field-Stadiumscore —
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- Seattle Municipal Towerscore 86
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- 999 Third Avescore 88
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See also: most efficient in Seattle · biggest emitters
How does American Hotel Hostel compare with other hotel buildings in Seattle?
The latest disclosures cover 86 hotel buildings in Seattle, out of 3,871 buildings citywide. American Hotel Hostel's ENERGY STAR score of 63 compares with an average of 76 across the 78 that report a score; it scores higher than 21% of them and lower than 74%. Its site EUI of 131.9 kBtu/ft² is about twice the average of 68.4 kBtu/ft² — it uses more energy per square foot than the typical building in that group. Its emissions intensity of 5.0 kgCO₂e/ft² is about 148% above the group average of 2.0 kgCO₂e/ft².
At 33,018 sq ft, it is about 80% below the average floor area of 165,912 sq ft for those buildings. It was built in 1925, 45 years earlier than the group's average year built (1971). Across all 24 jurisdictions BuildingCensus covers, the 3,812 hotel buildings average an ENERGY STAR score of 65 and a site EUI of 77.8 kBtu/ft².
How has American Hotel Hostel's energy performance changed over time?
BuildingCensus holds 11 Seattle disclosures for American Hotel Hostel, covering report years 2015–2025. Its ENERGY STAR score went from 46 in 2015 to 63 in 2025 (+17 points); its best year on file was 2021, at 77. Site EUI moved from 167.3 kBtu/ft² (2015) to 131.9 kBtu/ft² (2025), a 21% decrease. Reported emissions went from 174 tCO₂e to 164 tCO₂e over the same span (down 6%).
What does an ENERGY STAR score of 63 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 63 means the building performs better than about 63% of its national peers. BuildingCensus bands the score into report-card grades; 63 falls in band C — below median (55–69). It sits 12 points below 75, the threshold for ENERGY STAR certification. 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. American Hotel Hostel's 131.9 kBtu/ft² across 33,018 sq ft works out to about 4.4 billion Btu (1,276 MWh-equivalent) in 2025. Its source EUI of 210.9 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 400,252 kWh of electricity and 29,889 therms of natural gas for the year.
Which law requires American Hotel Hostel to report its energy use?
American Hotel Hostel 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:26728:2025). 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 hotel buildings in Seattle
- Civic Hotel· 29,186 sq ft · score 99 (A)
- Fisher Building· 24,940 sq ft · EUI 44.5 kBtu/ft²
- Georgetown Inn· 22,452 sq ft · score 97 (A)
- The Collegiana (Uw Med)· 20,571 sq ft · score 93 (A)
- Hotel buildings in Seattle· 86 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 American Hotel Hostel's energy grade?
American Hotel Hostel scores 63 out of 100 on ENERGY STAR — band C, below median (55–69) — in its 2025 Seattle disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does American Hotel Hostel use?
Its 2025 site energy-use intensity was 131.9 kBtu/ft² (210.9 kBtu/ft² source) across 33,018 sq ft, including 400,252 kWh of electricity and 29,889 therms of natural gas.
What are American Hotel Hostel's carbon emissions?
American Hotel Hostel reported 164 tCO₂e of greenhouse-gas emissions (5.0 kgCO₂e/ft²) for 2025.
Where is American Hotel Hostel?
American Hotel Hostel is at 520 S KING ST, in Seattle, Washington 98104. Its coordinates are 47.59850, -122.32677 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is American Hotel Hostel and when was it built?
American Hotel Hostel has 33,018 sq ft of gross floor area, as reported in its 2025 disclosure. The disclosure lists 1925 as its year built. It is classed as hotel.
Is American Hotel Hostel 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, “American Hotel Hostel, Seattle, Washington — 2025 benchmarking disclosure”, https://buildingcensus.com/buildings/seattle/american-hotel-hostel-0ba9b5aa (data as of October 2, 2026).