At a glance
Northwest Rooms - Seattle Center is a 26,000-square-foot other building at 305 HARRISON ST in Seattle, Washington, built in 1961. In its 2025 Seattle benchmarking disclosure it reported a site energy-use intensity of 93.9 kBtu/ft².
Seattle Energy Benchmarking Ordinance (SMC 22.920) · reporting year 2025
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 93.9 kBtu/ft² |
| Source EUI | 216.4 kBtu/ft² |
| GHG emissions | — |
| GHG intensity | — |
| Electricity | 946,898 kWh |
| Gross floor area | 26,000 sq ft |
| Source record | seattle:21418:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | — | 93.9 kBtu/ft² | — | |
| 2024 | — | 111.2 kBtu/ft² | 205 tCO₂e | |
| 2023 | — | 120.1 kBtu/ft² | 241 tCO₂e | |
| 2022 | — | 116.2 kBtu/ft² | 234 tCO₂e | |
| 2021 | — | 97.1 kBtu/ft² | 184 tCO₂e | |
| 2020 | — | 90.1 kBtu/ft² | 159 tCO₂e | |
| 2019 | — | 96.1 kBtu/ft² | 152 tCO₂e | |
| 2018 | — | 113.3 kBtu/ft² | 176 tCO₂e | |
| 2017 | — | 120.8 kBtu/ft² | 224 tCO₂e | |
| 2016 | — | 105.9 kBtu/ft² | 188 tCO₂e | |
| 2015 | — | 78.1 kBtu/ft² | 122 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
- 305 HARRISON ST
- City
- Seattle
- State
- Washington
- ZIP
- 98109
- Coordinates
- 47.62141, -122.35086
Within ~1 km
Nearby benchmarked buildings
- Insignia Condosscore 47
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- 333 Dexter Ave Nscore 84
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- Climate Pledge Arenascore —
Indoor Arena · 932,000 sq ft
- Bill & Melinda Gates Foundationscore 73
Office · 920,598 sq ft
- Olympus Aptsscore 97
Multifamily Housing · 590,869 sq ft
Mixed Use Property · 524,610 sq ft
See also: most efficient in Seattle · biggest emitters
How does Northwest Rooms - Seattle Center compare with other other buildings in Seattle?
The latest disclosures cover 45 other buildings in Seattle, out of 3,871 buildings citywide. Its site EUI of 93.9 kBtu/ft² is about 58% above the average of 59.4 kBtu/ft² — it uses more energy per square foot than the typical building in that group.
At 26,000 sq ft, it is about half of the average floor area of 55,708 sq ft for those buildings. It was built in 1961, 9 years later than the group's average year built (1952). Across all 24 jurisdictions BuildingCensus covers, the 1,327 other buildings average an ENERGY STAR score of 60 and a site EUI of 63.3 kBtu/ft².
How has Northwest Rooms - Seattle Center's energy performance changed over time?
BuildingCensus holds 11 Seattle disclosures for Northwest Rooms - Seattle Center, covering report years 2015–2025. Site EUI moved from 78.1 kBtu/ft² (2015) to 93.9 kBtu/ft² (2025), an 20% increase. Reported emissions went from 122 tCO₂e to 205 tCO₂e over the same span (up 67%).
What does a site EUI of 93.9 kBtu/ft² mean?
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. Northwest Rooms - Seattle Center's 93.9 kBtu/ft² across 26,000 sq ft works out to about 2.4 billion Btu (716 MWh-equivalent) in 2025. Its source EUI of 216.4 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 946,898 kWh of electricity for the year.
Which law requires Northwest Rooms - Seattle Center to report its energy use?
Northwest Rooms - Seattle Center 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:21418:2025). 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 other buildings in Seattle
- Victory Studios· 25,946 sq ft · EUI 4474.8 kBtu/ft²
- CENTURYLINK: COIN OFFICE· 25,460 sq ft · EUI 50.2 kBtu/ft²
- J & M Hotel Building· 25,450 sq ft
- Salvation Army White Center Community Center· 24,224 sq ft · EUI 25.1 kBtu/ft²
- Evergreen-Washelli (Mortuary/Crematorium)· 23,166 sq ft · EUI 327.7 kBtu/ft²
- Arttech & Fine Art Framing· 23,000 sq ft · EUI 28.6 kBtu/ft²
- Other buildings in Seattle· 45 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 Northwest Rooms - Seattle Center's energy grade?
Northwest Rooms - Seattle Center did not report an ENERGY STAR score in its 2025 disclosure, but its site energy-use intensity was 93.9 kBtu/ft².
How much energy does Northwest Rooms - Seattle Center use?
Its 2025 site energy-use intensity was 93.9 kBtu/ft² (216.4 kBtu/ft² source) across 26,000 sq ft, including 946,898 kWh of electricity.
What are Northwest Rooms - Seattle Center's carbon emissions?
No greenhouse-gas emissions figure was reported for 2025.
Where is Northwest Rooms - Seattle Center?
Northwest Rooms - Seattle Center is at 305 HARRISON ST, in Seattle, Washington 98109. Its coordinates are 47.62141, -122.35086 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is Northwest Rooms - Seattle Center and when was it built?
Northwest Rooms - Seattle Center has 26,000 sq ft of gross floor area, as reported in its 2025 disclosure. The disclosure lists 1961 as its year built. It is classed as other.
Is Northwest Rooms - Seattle Center 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, “Northwest Rooms - Seattle Center, Seattle, Washington — 2025 benchmarking disclosure”, https://buildingcensus.com/buildings/seattle/northwest-rooms-seattle-center-6407b420 (data as of October 2, 2026).