Grex Apts
Multifamily Housing in Seattle, WA · 503 1ST AVE W · 98119
Seattle Energy Benchmarking Ordinance (SMC 22.920) · reporting year 2025
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 100 (band A) |
| Site EUI | 10.8 kBtu/ft² |
| Source EUI | 30.3 kBtu/ft² |
| GHG emissions | — |
| GHG intensity | — |
| Electricity | 70,730 kWh |
| Gross floor area | 22,320 sq ft |
| Source record | seattle:21712:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | 100 | ±0 | 10.8 kBtu/ft² | — |
| 2024 | 100 | +2 | 9.9 kBtu/ft² | 1 tCO₂e |
| 2023 | 98 | +1 | 44.8 kBtu/ft² | 42 tCO₂e |
| 2022 | 97 | 44.9 kBtu/ft² | 94 tCO₂e | |
| 2021 | — | — | — | |
| 2020 | 85 | +1 | 61.7 kBtu/ft² | 63 tCO₂e |
| 2019 | 84 | ±0 | 63.8 kBtu/ft² | 66 tCO₂e |
| 2018 | 84 | +4 | 62.7 kBtu/ft² | 64 tCO₂e |
| 2017 | 80 | -8 | 68.5 kBtu/ft² | 71 tCO₂e |
| 2016 | 88 | +12 | 60.6 kBtu/ft² | 62 tCO₂e |
| 2015 | 76 | 71.2 kBtu/ft² | 75 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
- 503 1ST AVE W
- City
- Seattle
- State
- Washington
- ZIP
- 98119
- Coordinates
- 47.62344, -122.35842
Within ~1 km
Nearby benchmarked buildings
- Climate Pledge Arenascore —
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- Third And Broad Bldgscore 94
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- Armory - Seattle Centerscore —
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- Expo Apartmentsscore 97
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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 Grex Apts's energy grade?
Grex Apts scores 100 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 Grex Apts use?
Its 2025 site energy-use intensity was 10.8 kBtu/ft² (30.3 kBtu/ft² source) across 22,320 sq ft, including 70,730 kWh of electricity.
What are Grex Apts's carbon emissions?
No greenhouse-gas emissions figure was reported 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:21712:2025.