Jefferson Terrace
Multifamily Housing in Seattle, WA · 800 JEFFERSON ST · 98104
Seattle Energy Benchmarking Ordinance (SMC 22.920) · reporting year 2025
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 73 (band B) |
| Site EUI | 58.2 kBtu/ft² |
| Source EUI | 104.8 kBtu/ft² |
| GHG emissions | 405 tCO₂e |
| GHG intensity | 1.9 kgCO₂e/ft² |
| Electricity | 1,559,520 kWh |
| Natural gas | 70,699 therms |
| Gross floor area | 212,938 sq ft |
| Source record | seattle:23284:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | 73 | -4 | 58.2 kBtu/ft² | 405 tCO₂e |
| 2024 | 77 | -17 | 64.1 kBtu/ft² | 531 tCO₂e |
| 2023 | 94 | ±0 | 51.0 kBtu/ft² | 409 tCO₂e |
| 2022 | 94 | +8 | 52.6 kBtu/ft² | 437 tCO₂e |
| 2021 | 86 | +7 | 59.4 kBtu/ft² | 486 tCO₂e |
| 2020 | 79 | +20 | 60.6 kBtu/ft² | 486 tCO₂e |
| 2019 | 59 | -40 | 73.2 kBtu/ft² | 602 tCO₂e |
| 2018 | 99 | +7 | 48.8 kBtu/ft² | 472 tCO₂e |
| 2017 | 92 | +11 | 56.1 kBtu/ft² | 472 tCO₂e |
| 2016 | 81 | +40 | 50.6 kBtu/ft² | 343 tCO₂e |
| 2015 | 41 | 50.7 kBtu/ft² | 340 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
- 800 JEFFERSON ST
- City
- Seattle
- State
- Washington
- ZIP
- 98104
- Coordinates
- 47.60480, -122.32530
Within ~1 km
Nearby benchmarked buildings
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Parking · 2,080,885 sq ft
- Columbia Centerscore 90
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Hospital (General Medical & Surgical) · 1,926,841 sq ft
- Seattle Convention Centerscore —
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- Two Union Squarescore 96
Office · 1,605,578 sq ft
See also: most efficient in Seattle · biggest emitters
Frequently asked questions
What is Jefferson Terrace's energy grade?
Jefferson Terrace scores 73 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 Jefferson Terrace use?
Its 2025 site energy-use intensity was 58.2 kBtu/ft² (104.8 kBtu/ft² source) across 212,938 sq ft, including 1,559,520 kWh of electricity and 70,699 therms of natural gas.
What are Jefferson Terrace's carbon emissions?
Jefferson Terrace reported 405 tCO₂e of greenhouse-gas emissions (1.9 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:23284:2025.