525 First Avenue Apartments
Multifamily Housing in Seattle, WA · 523 1ST AVE W · 98119
Seattle Energy Benchmarking Ordinance (SMC 22.920) · reporting year 2025
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 75 (band B) |
| Site EUI | 29.1 kBtu/ft² |
| Source EUI | 81.4 kBtu/ft² |
| GHG emissions | 6 tCO₂e |
| GHG intensity | 0.2 kgCO₂e/ft² |
| Electricity | 316,467 kWh |
| Gross floor area | 50,903 sq ft |
| Source record | seattle:21711:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | 75 | -5 | 29.1 kBtu/ft² | 6 tCO₂e |
| 2024 | 80 | +6 | 27.6 kBtu/ft² | 6 tCO₂e |
| 2023 | 74 | 29.3 kBtu/ft² | 6 tCO₂e | |
| 2022 | — | — | — | |
| 2021 | — | — | — | |
| 2020 | 91 | ±0 | 19.2 kBtu/ft² | 6 tCO₂e |
| 2019 | 91 | +6 | 19.2 kBtu/ft² | 6 tCO₂e |
| 2018 | 85 | -7 | 21.0 kBtu/ft² | 6 tCO₂e |
| 2017 | 92 | +4 | 19.4 kBtu/ft² | 6 tCO₂e |
| 2016 | 88 | 18.6 kBtu/ft² | 6 tCO₂e | |
| 2015 | — | 24.8 kBtu/ft² | 5 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
- 523 1ST AVE W
- City
- Seattle
- State
- Washington
- ZIP
- 98119
- Coordinates
- 47.62407, -122.35836
Within ~1 km
Nearby benchmarked buildings
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- Armory - Seattle Centerscore —
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- Avalon Queen Annescore 98
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See also: most efficient in Seattle · biggest emitters
Frequently asked questions
What is 525 First Avenue Apartments's energy grade?
525 First Avenue Apartments scores 75 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 525 First Avenue Apartments use?
Its 2025 site energy-use intensity was 29.1 kBtu/ft² (81.4 kBtu/ft² source) across 50,903 sq ft, including 316,467 kWh of electricity.
What are 525 First Avenue Apartments's carbon emissions?
525 First Avenue Apartments reported 6 tCO₂e of greenhouse-gas emissions (0.2 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:21711:2025.