Union Bay Apts
Multifamily Housing in Seattle, WA · 526 YALE AVE N · 98109
Seattle Energy Benchmarking Ordinance (SMC 22.920) · reporting year 2025
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 86 (band A) |
| Site EUI | 37.6 kBtu/ft² |
| Source EUI | 89.2 kBtu/ft² |
| GHG emissions | 35 tCO₂e |
| GHG intensity | 0.6 kgCO₂e/ft² |
| Electricity | 471,609 kWh |
| Natural gas | 5,200 therms |
| Gross floor area | 86,525 sq ft |
| Source record | seattle:19793:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | 86 | ±0 | 37.6 kBtu/ft² | 35 tCO₂e |
| 2024 | 86 | -1 | 38.3 kBtu/ft² | 41 tCO₂e |
| 2023 | 87 | +2 | 37.5 kBtu/ft² | 39 tCO₂e |
| 2022 | 85 | ±0 | 40.0 kBtu/ft² | 43 tCO₂e |
| 2021 | 85 | -2 | 38.5 kBtu/ft² | 39 tCO₂e |
| 2020 | 87 | -8 | 35.9 kBtu/ft² | 33 tCO₂e |
| 2019 | 95 | -1 | 36.2 kBtu/ft² | 45 tCO₂e |
| 2018 | 96 | -1 | 35.3 kBtu/ft² | 44 tCO₂e |
| 2017 | 97 | +13 | 35.7 kBtu/ft² | 43 tCO₂e |
| 2016 | 84 | +5 | 37.0 kBtu/ft² | 34 tCO₂e |
| 2015 | 79 | 36.6 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
- 526 YALE AVE N
- City
- Seattle
- State
- Washington
- ZIP
- 98109
- Coordinates
- 47.62406, -122.33027
Within ~1 km
Nearby benchmarked buildings
- Onni South Lake Unionscore 77
Multifamily Housing · 1,546,084 sq ft
- Troy Block (Amazon)score 88
Office · 1,261,155 sq ft
- Mirabella Retirement Communityscore 97
Senior Living Community · 724,148 sq ft
- Kiarascore 99
Multifamily Housing · 664,970 sq ft
- Ascent Slu And Marlowescore 99
Multifamily Housing · 651,374 sq ft
- The Ivey on Borenscore 77
Multifamily HR (10+) · 632,270 sq ft
See also: most efficient in Seattle · biggest emitters
Frequently asked questions
What is Union Bay Apts's energy grade?
Union Bay Apts scores 86 out of 100 on ENERGY STAR — band A (High performer (85–100)) — in its 2025 Seattle disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does Union Bay Apts use?
Its 2025 site energy-use intensity was 37.6 kBtu/ft² (89.2 kBtu/ft² source) across 86,525 sq ft, including 471,609 kWh of electricity and 5,200 therms of natural gas.
What are Union Bay Apts's carbon emissions?
Union Bay Apts reported 35 tCO₂e of greenhouse-gas emissions (0.6 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.
Working with Seattle building benchmarking records? Pro adds alerts, change history and CSV export ($49/mo); Enterprise adds full national files, the API and an MCP server for AI tools.
Dataset updated . Source: Building Energy Benchmarking disclosure, record seattle:19793:2025.