Castellan
Multifamily Housing in Seattle, WA · 607 E HARRISON ST · 98102
Seattle Energy Benchmarking Ordinance (SMC 22.920) · reporting year 2025
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 89 (band A) |
| Site EUI | 32.3 kBtu/ft² |
| Source EUI | 90.3 kBtu/ft² |
| GHG emissions | 5 tCO₂e |
| GHG intensity | 0.2 kgCO₂e/ft² |
| Electricity | 259,543 kWh |
| Gross floor area | 36,885 sq ft |
| Source record | seattle:26061:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | 89 | -2 | 32.3 kBtu/ft² | 5 tCO₂e |
| 2024 | 91 | ±0 | 31.4 kBtu/ft² | 5 tCO₂e |
| 2023 | 91 | -1 | 31.8 kBtu/ft² | 5 tCO₂e |
| 2022 | 92 | +1 | 31.8 kBtu/ft² | 5 tCO₂e |
| 2021 | 91 | +1 | 32.0 kBtu/ft² | 5 tCO₂e |
| 2020 | 90 | -3 | 31.5 kBtu/ft² | 5 tCO₂e |
| 2019 | 93 | -3 | 30.4 kBtu/ft² | 5 tCO₂e |
| 2018 | 96 | -1 | 28.0 kBtu/ft² | 5 tCO₂e |
| 2017 | 97 | +5 | 28.4 kBtu/ft² | 5 tCO₂e |
| 2016 | 92 | +9 | 28.5 kBtu/ft² | 5 tCO₂e |
| 2015 | 83 | 27.8 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
- 607 E HARRISON ST
- City
- Seattle
- State
- Washington
- ZIP
- 98102
- Coordinates
- 47.62175, -122.32376
Within ~1 km
Nearby benchmarked buildings
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- Nexusscore —
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- Metropolitan Park Eastscore 84
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See also: most efficient in Seattle · biggest emitters
Frequently asked questions
What is Castellan's energy grade?
Castellan scores 89 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 Castellan use?
Its 2025 site energy-use intensity was 32.3 kBtu/ft² (90.3 kBtu/ft² source) across 36,885 sq ft, including 259,543 kWh of electricity.
What are Castellan's carbon emissions?
Castellan reported 5 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:26061:2025.