Seattle Energy Benchmarking Ordinance (SMC 22.920) · reporting year 2025
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 61 (band C) |
| Site EUI | 67.6 kBtu/ft² |
| Source EUI | 143.7 kBtu/ft² |
| GHG emissions | 294 tCO₂e |
| GHG intensity | 1.6 kgCO₂e/ft² |
| Electricity | 2,239,990 kWh |
| Natural gas | 47,995 therms |
| Gross floor area | 199,530 sq ft |
| Source record | seattle:359:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | 61 | +4 | 67.6 kBtu/ft² | 294 tCO₂e |
| 2024 | 57 | +10 | 72.2 kBtu/ft² | 332 tCO₂e |
| 2023 | 47 | +7 | 81.7 kBtu/ft² | 393 tCO₂e |
| 2022 | 40 | -4 | 91.6 kBtu/ft² | 496 tCO₂e |
| 2021 | 44 | +1 | 82.8 kBtu/ft² | 446 tCO₂e |
| 2020 | 43 | -11 | 80.6 kBtu/ft² | 397 tCO₂e |
| 2019 | 54 | +2 | 75.3 kBtu/ft² | 321 tCO₂e |
| 2018 | 52 | +9 | 75.2 kBtu/ft² | 296 tCO₂e |
| 2017 | 43 | -26 | 79.3 kBtu/ft² | 326 tCO₂e |
| 2016 | 69 | -1 | 73.2 kBtu/ft² | 288 tCO₂e |
| 2015 | 70 | 73.0 kBtu/ft² | 290 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
- 600 4TH AVE
- City
- Seattle
- State
- Washington
- ZIP
- 98104
- Coordinates
- 47.60377, -122.32971
Within ~1 km
Nearby benchmarked buildings
Parking · 2,080,885 sq ft
- Columbia Centerscore 90
Office · 1,952,220 sq ft
Hospital (General Medical & Surgical) · 1,926,841 sq ft
- Two Union Squarescore 96
Office · 1,605,578 sq ft
- Us Bank Centerscore 87
Office · 1,536,606 sq ft
Office · 1,527,817 sq ft
See also: most efficient in Seattle · biggest emitters
Frequently asked questions
What is City Hall's energy grade?
City Hall scores 61 out of 100 on ENERGY STAR — band C (Below median (55–69)) — in its 2025 Seattle disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does City Hall use?
Its 2025 site energy-use intensity was 67.6 kBtu/ft² (143.7 kBtu/ft² source) across 199,530 sq ft, including 2,239,990 kWh of electricity and 47,995 therms of natural gas.
What are City Hall's carbon emissions?
City Hall reported 294 tCO₂e of greenhouse-gas emissions (1.6 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:359:2025.