Seattle Energy Benchmarking Ordinance (SMC 22.920) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 98 (band A) |
| Site EUI | 14.7 kBtu/ft² |
| Source EUI | 41.1 kBtu/ft² |
| GHG emissions | 20 tCO₂e |
| GHG intensity | 0.1 kgCO₂e/ft² |
| Electricity | 994,761 kWh |
| Gross floor area | 268,005 sq ft |
| Source record | seattle:51984:2024 |
Compliance context
Seattle Energy Benchmarking Ordinance (SMC 22.920)
Seattle's Building Emissions Performance Standard (2023) sets declining carbon targets for buildings over 20,000 sq ft, with penalties for non-compliance beginning in the 2030s.
Ownership
No owner listed in the disclosure.
Own or manage this building? Claim it to correct the record and get compliance alerts.
Location
- Address
- 400 WESTLAKE AVE N
- City
- Seattle
- State
- Washington
- ZIP
- 98109
- Coordinates
- 47.62237, -122.33805
Within ~1 km
Nearby benchmarked buildings
Office · 1,599,394 sq ft
- DAY 1 TOWER AND SPHERES (Amazon)score 93
Office · 1,599,230 sq ft
- ONNI SOUTH LAKE UNIONscore 54
Multifamily HR (10+) · 1,546,084 sq ft
- AMAZON DOPPLER BUILDINGscore 93
Office · 1,496,961 sq ft
- INSIGNIA CONDOSscore 45
Multifamily HR (10+) · 1,464,631 sq ft
- HYATT REGENCY SEATTLEscore 73
Hotel · 1,400,666 sq ft
See also: most efficient in Seattle · biggest emitters
Frequently asked questions
What is 400 WESTLAKE BUILDING's energy grade?
400 WESTLAKE BUILDING scores 98 out of 100 on ENERGY STAR — band A (High performer (85–100)) — in its 2024 Seattle disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does 400 WESTLAKE BUILDING use?
Its 2024 site energy-use intensity was 14.7 kBtu/ft² (41.1 kBtu/ft² source) across 268,005 sq ft, including 994,761 kWh of electricity.
What are 400 WESTLAKE BUILDING's carbon emissions?
400 WESTLAKE BUILDING reported 20 tCO₂e of greenhouse-gas emissions (0.1 kgCO₂e/ft²) for 2024. Seattle's Building Emissions Performance Standard (2023) sets declining carbon targets for buildings over 20,000 sq ft, with penalties for non-compliance beginning in the 2030s.
Dataset updated . Source: Building Energy Benchmarking disclosure, record seattle:51984:2024.