Twin Birches Apts
Multifamily Housing in Seattle, WA · 800 2ND AVE N · 98109
Seattle Energy Benchmarking Ordinance (SMC 22.920) · reporting year 2025
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 99 (band A) |
| Site EUI | 23.9 kBtu/ft² |
| Source EUI | 54.2 kBtu/ft² |
| GHG emissions | 12 tCO₂e |
| GHG intensity | 0.5 kgCO₂e/ft² |
| Electricity | 124,309 kWh |
| Natural gas | 1,852 therms |
| Gross floor area | 27,246 sq ft |
| Source record | seattle:27634:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | 99 | +2 | 23.9 kBtu/ft² | 12 tCO₂e |
| 2024 | 97 | +1 | 25.9 kBtu/ft² | 14 tCO₂e |
| 2023 | 96 | +4 | 27.5 kBtu/ft² | 15 tCO₂e |
| 2022 | 92 | -3 | 36.3 kBtu/ft² | 27 tCO₂e |
| 2021 | 95 | -5 | 32.9 kBtu/ft² | 24 tCO₂e |
| 2020 | 100 | ±0 | 18.4 kBtu/ft² | 8 tCO₂e |
| 2019 | 100 | ±0 | 20.3 kBtu/ft² | 14 tCO₂e |
| 2018 | 100 | +1 | 22.0 kBtu/ft² | 15 tCO₂e |
| 2017 | 99 | +2 | 23.8 kBtu/ft² | 15 tCO₂e |
| 2016 | 97 | -3 | 23.9 kBtu/ft² | 14 tCO₂e |
| 2015 | 100 | 20.9 kBtu/ft² | 14 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
- 800 2ND AVE N
- City
- Seattle
- State
- Washington
- ZIP
- 98109
- Coordinates
- 47.62664, -122.35236
Within ~1 km
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- Armory - Seattle Centerscore —
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See also: most efficient in Seattle · biggest emitters
Frequently asked questions
What is Twin Birches Apts's energy grade?
Twin Birches Apts scores 99 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 Twin Birches Apts use?
Its 2025 site energy-use intensity was 23.9 kBtu/ft² (54.2 kBtu/ft² source) across 27,246 sq ft, including 124,309 kWh of electricity and 1,852 therms of natural gas.
What are Twin Birches Apts's carbon emissions?
Twin Birches Apts reported 12 tCO₂e of greenhouse-gas emissions (0.5 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:27634:2025.