Union Bay Condominium
Multifamily Housing in Seattle, WA · 762 HAYES ST · 98109
Seattle Energy Benchmarking Ordinance (SMC 22.920) · reporting year 2025
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 58 (band C) |
| Site EUI | 43.6 kBtu/ft² |
| Source EUI | 87.9 kBtu/ft² |
| GHG emissions | 27 tCO₂e |
| GHG intensity | 1.1 kgCO₂e/ft² |
| Electricity | 171,533 kWh |
| Natural gas | 4,730 therms |
| Gross floor area | 31,008 sq ft |
| Source record | seattle:26135:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | 58 | ±0 | 43.6 kBtu/ft² | 27 tCO₂e |
| 2024 | 58 | +9 | 43.1 kBtu/ft² | 28 tCO₂e |
| 2023 | 49 | +12 | 46.9 kBtu/ft² | 31 tCO₂e |
| 2022 | 37 | -7 | 53.4 kBtu/ft² | 37 tCO₂e |
| 2021 | 44 | ±0 | 51.6 kBtu/ft² | 38 tCO₂e |
| 2020 | 44 | +3 | 49.6 kBtu/ft² | 36 tCO₂e |
| 2019 | 41 | -7 | 50.4 kBtu/ft² | 36 tCO₂e |
| 2018 | 48 | +19 | 45.8 kBtu/ft² | 30 tCO₂e |
| 2017 | 29 | +5 | 52.9 kBtu/ft² | 32 tCO₂e |
| 2016 | 24 | +2 | 49.7 kBtu/ft² | 31 tCO₂e |
| 2015 | 22 | 51.6 kBtu/ft² | 33 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
- 762 HAYES ST
- City
- Seattle
- State
- Washington
- ZIP
- 98109
- Coordinates
- 47.63434, -122.34140
Within ~1 km
Nearby benchmarked buildings
- Dexter Station Officescore 83
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- One Lakefront At 1287score 98
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- Westlake Steps & Marina Sluscore 99
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- Juxt Apartments (2017)score 100
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- West Lake Union Centerscore 90
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- Neptune Apartmentsscore 96
Multifamily Housing · 373,664 sq ft
See also: most efficient in Seattle · biggest emitters
Frequently asked questions
What is Union Bay Condominium's energy grade?
Union Bay Condominium scores 58 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 Union Bay Condominium use?
Its 2025 site energy-use intensity was 43.6 kBtu/ft² (87.9 kBtu/ft² source) across 31,008 sq ft, including 171,533 kWh of electricity and 4,730 therms of natural gas.
What are Union Bay Condominium's carbon emissions?
Union Bay Condominium reported 27 tCO₂e of greenhouse-gas emissions (1.1 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:26135:2025.