Westroy Apts
Multifamily Housing in Seattle, WA · 421 W ROY ST · 98119
Seattle Energy Benchmarking Ordinance (SMC 22.920) · reporting year 2025
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 70 (band B) |
| Site EUI | 40.5 kBtu/ft² |
| Source EUI | 84.5 kBtu/ft² |
| GHG emissions | 26 tCO₂e |
| GHG intensity | 1.0 kgCO₂e/ft² |
| Electricity | 181,724 kWh |
| Natural gas | 4,275 therms |
| Gross floor area | 31,040 sq ft |
| Source record | seattle:23435:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | 70 | +9 | 40.5 kBtu/ft² | 26 tCO₂e |
| 2024 | 61 | +15 | 42.8 kBtu/ft² | 27 tCO₂e |
| 2023 | 46 | +42 | 43.0 kBtu/ft² | 21 tCO₂e |
| 2022 | 4 | -70 | 57.8 kBtu/ft² | 13 tCO₂e |
| 2021 | 74 | -16 | 29.8 kBtu/ft² | 5 tCO₂e |
| 2020 | 90 | -3 | 23.9 kBtu/ft² | 4 tCO₂e |
| 2019 | 93 | -3 | 25.1 kBtu/ft² | 4 tCO₂e |
| 2018 | 96 | +4 | 25.0 kBtu/ft² | 4 tCO₂e |
| 2017 | 92 | -1 | 27.3 kBtu/ft² | 4 tCO₂e |
| 2016 | 93 | ±0 | 24.9 kBtu/ft² | 4 tCO₂e |
| 2015 | 93 | 25.3 kBtu/ft² | 4 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.
Own or manage this building? Claim it to correct the record and get compliance alerts.
Location
- Address
- 421 W ROY ST
- City
- Seattle
- State
- Washington
- ZIP
- 98119
- Coordinates
- 47.62563, -122.36297
Within ~1 km
Nearby benchmarked buildings
- 635 ELLIOTT - SOUTH BUILDINGscore 65
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- Avalon Queen Annescore 98
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- 3131 Elliott Bldgscore 77
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- Elliott Bay Office Parkscore 97
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- Astro Apartmentsscore 95
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- 645 Elliott - North Buildingscore —
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See also: most efficient in Seattle · biggest emitters
Frequently asked questions
What is Westroy Apts's energy grade?
Westroy Apts scores 70 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 Westroy Apts use?
Its 2025 site energy-use intensity was 40.5 kBtu/ft² (84.5 kBtu/ft² source) across 31,040 sq ft, including 181,724 kWh of electricity and 4,275 therms of natural gas.
What are Westroy Apts's carbon emissions?
Westroy Apts reported 26 tCO₂e of greenhouse-gas emissions (1.0 kgCO₂e/ft²) for 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.
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Dataset updated . Source: Building Energy Benchmarking disclosure, record seattle:23435:2025.