At a glance
Citizenm South Lake Union Hotel is a 89,199-square-foot hotel at 201 WESTLAKE AVE N in Seattle, Washington, built in 2018. In its 2025 Seattle benchmarking disclosure it reported an ENERGY STAR score of 13 out of 100 (grade D), a site energy-use intensity of 91.5 kBtu/ft² and 232 tCO₂e of greenhouse-gas emissions. That score is higher than 3% 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 | 13 (band D) |
| Site EUI | 91.5 kBtu/ft² |
| Source EUI | 183.3 kBtu/ft² |
| GHG emissions | 232 tCO₂e |
| GHG intensity | 2.5 kgCO₂e/ft² |
| Electricity | 1,350,542 kWh |
| Natural gas | 38,575 therms |
| Gross floor area | 89,199 sq ft |
| Source record | seattle:50863:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | 13 | -9 | 91.5 kBtu/ft² | 232 tCO₂e |
| 2024 | 22 | -10 | 73.6 kBtu/ft² | 143 tCO₂e |
| 2023 | 32 | +3 | 65.4 kBtu/ft² | 119 tCO₂e |
| 2022 | 29 | 70.6 kBtu/ft² | 145 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
- 201 WESTLAKE AVE N
- City
- Seattle
- State
- Washington
- ZIP
- 98109
- Coordinates
- 47.61997, -122.33886
Within ~1 km
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See also: most efficient in Seattle · biggest emitters
How does Citizenm South Lake Union Hotel compare with other hotel buildings in Seattle?
The latest disclosures cover 86 hotel buildings in Seattle, out of 3,871 buildings citywide. Citizenm South Lake Union Hotel's ENERGY STAR score of 13 compares with an average of 76 across the 78 that report a score; it scores higher than 3% of them and lower than 96%. Its site EUI of 91.5 kBtu/ft² is about 34% above 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 2.5 kgCO₂e/ft² is about 25% above the group average of 2.0 kgCO₂e/ft².
At 89,199 sq ft, it is about half of the average floor area of 165,912 sq ft for those buildings. It was built in 2018, 48 years later 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 Citizenm South Lake Union Hotel's energy performance changed over time?
BuildingCensus holds 4 Seattle disclosures for Citizenm South Lake Union Hotel, covering report years 2022–2025. Its ENERGY STAR score went from 29 in 2022 to 13 in 2025 (-16 points); its best year on file was 2023, at 32. Site EUI moved from 70.6 kBtu/ft² (2022) to 91.5 kBtu/ft² (2025), an 30% increase. Reported emissions went from 145 tCO₂e to 232 tCO₂e over the same span (up 60%).
What does an ENERGY STAR score of 13 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 13 means the building performs better than about 13% of its national peers. BuildingCensus bands the score into report-card grades; 13 falls in band D — lowest band (1–54). It sits 62 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. Citizenm South Lake Union Hotel's 91.5 kBtu/ft² across 89,199 sq ft works out to about 8.2 billion Btu (2,392 MWh-equivalent) in 2025. Its source EUI of 183.3 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 1,350,542 kWh of electricity and 38,575 therms of natural gas for the year.
Which law requires Citizenm South Lake Union Hotel to report its energy use?
Citizenm South Lake Union Hotel 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:50863:2025). 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
- Watertown Hotel· 88,592 sq ft · score 97 (A)
- Mayflower Park Hotel· 88,434 sq ft
- Fhcc – Behnke Family House· 84,103 sq ft · score 83 (B)
- CAMLIN WORLDMARK HOTEL· 83,008 sq ft · score 10 (D)
- Silver Cloud Inn University· 81,871 sq ft · score 91 (A)
- Sorrento Hotel· 76,631 sq ft · score 1 (D)
- 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 Citizenm South Lake Union Hotel's energy grade?
Citizenm South Lake Union Hotel scores 13 out of 100 on ENERGY STAR — band D, lowest band (1–54) — in its 2025 Seattle disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does Citizenm South Lake Union Hotel use?
Its 2025 site energy-use intensity was 91.5 kBtu/ft² (183.3 kBtu/ft² source) across 89,199 sq ft, including 1,350,542 kWh of electricity and 38,575 therms of natural gas.
What are Citizenm South Lake Union Hotel's carbon emissions?
Citizenm South Lake Union Hotel reported 232 tCO₂e of greenhouse-gas emissions (2.5 kgCO₂e/ft²) for 2025.
Where is Citizenm South Lake Union Hotel?
Citizenm South Lake Union Hotel is at 201 WESTLAKE AVE N, in Seattle, Washington 98109. Its coordinates are 47.61997, -122.33886 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is Citizenm South Lake Union Hotel and when was it built?
Citizenm South Lake Union Hotel has 89,199 sq ft of gross floor area, as reported in its 2025 disclosure. The disclosure lists 2018 as its year built. It is classed as hotel.
Is Citizenm South Lake Union Hotel 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, “Citizenm South Lake Union Hotel, Seattle, Washington — 2025 benchmarking disclosure”, https://buildingcensus.com/buildings/seattle/citizenm-south-lake-union-hotel-b690f1a0 (data as of October 2, 2026).