Caroline W. Apts
Multifamily Housing in Seattle, WA · 431 BOYLSTON AVE E · 98102
Seattle Energy Benchmarking Ordinance (SMC 22.920) · reporting year 2025
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 95 (band A) |
| Site EUI | 40.6 kBtu/ft² |
| Source EUI | 94.5 kBtu/ft² |
| GHG emissions | 17 tCO₂e |
| GHG intensity | 0.8 kgCO₂e/ft² |
| Electricity | 196,349 kWh |
| Natural gas | 2,491 therms |
| Gross floor area | 22,455 sq ft |
| Source record | seattle:50022:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | 95 | +4 | 40.6 kBtu/ft² | 17 tCO₂e |
| 2024 | 91 | -2 | 42.1 kBtu/ft² | 15 tCO₂e |
| 2023 | 93 | +7 | 41.6 kBtu/ft² | 16 tCO₂e |
| 2022 | 86 | 42.1 kBtu/ft² | 5 tCO₂e | |
| 2021 | — | — | — | |
| 2020 | 89 | ±0 | 44.2 kBtu/ft² | 16 tCO₂e |
| 2019 | 89 | +7 | 44.8 kBtu/ft² | 17 tCO₂e |
| 2018 | 82 | -17 | 48.9 kBtu/ft² | 18 tCO₂e |
| 2017 | 99 | +4 | 34.7 kBtu/ft² | 14 tCO₂e |
| 2016 | 95 | 31.9 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.
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Location
- Address
- 431 BOYLSTON AVE E
- City
- Seattle
- State
- Washington
- ZIP
- 98102
- Coordinates
- 47.62301, -122.32337
Within ~1 km
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See also: most efficient in Seattle · biggest emitters
Frequently asked questions
What is Caroline W. Apts's energy grade?
Caroline W. Apts scores 95 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 Caroline W. Apts use?
Its 2025 site energy-use intensity was 40.6 kBtu/ft² (94.5 kBtu/ft² source) across 22,455 sq ft, including 196,349 kWh of electricity and 2,491 therms of natural gas.
What are Caroline W. Apts's carbon emissions?
Caroline W. Apts reported 17 tCO₂e of greenhouse-gas emissions (0.8 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:50022:2025.