BuildingCensus
A

224 Westlake

Office in Seattle, WA · 224 WESTLAKE AVE N · 98109

ENERGY STAR score
87
band A · 2025
Site EUI
42.2
kBtu/ft²
GHG emissions
7
tCO₂e
GHG intensity
0.2
kgCO₂e/ft²
Floor area
35,780
sq ft
Year built
1926
vintage
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85–10070–8455–691–54
This entry + 6 nearby

Seattle Energy Benchmarking Ordinance (SMC 22.920) · reporting year 2025

Benchmarking record

FieldValue
ENERGY STAR score87 (band A)
Site EUI42.2 kBtu/ft²
Source EUI118.1 kBtu/ft²
GHG emissions7 tCO₂e
GHG intensity0.2 kgCO₂e/ft²
Electricity377,730 kWh
Gross floor area35,780 sq ft
Source recordseattle:21447:2025

The disclosure history

Year over year

YearScoreΔSite EUIGHG emissions
2025latest87+1742.2 kBtu/ft²7 tCO₂e
202470+4456.2 kBtu/ft²10 tCO₂e
202326-3999.5 kBtu/ft²18 tCO₂e
202265±061.8 kBtu/ft²11 tCO₂e
202165+162.6 kBtu/ft²11 tCO₂e
202064-364.7 kBtu/ft²12 tCO₂e
201967-562.2 kBtu/ft²11 tCO₂e
201872-1058.1 kBtu/ft²10 tCO₂e
201782+558.8 kBtu/ft²10 tCO₂e
201677+7662.6 kBtu/ft²11 tCO₂e
2015186.9 kBtu/ft²13 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.

Program details →

Ownership

No owning organisation shown. Names of private individuals in the disclosure are not published here.

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Location

Address
224 WESTLAKE AVE N
State
Washington
ZIP
98109
Coordinates
47.62054, -122.33807

Within ~1 km

Nearby benchmarked buildings

See also: most efficient in Seattle · biggest emitters

Frequently asked questions

What is 224 Westlake's energy grade?

224 Westlake scores 87 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 224 Westlake use?

Its 2025 site energy-use intensity was 42.2 kBtu/ft² (118.1 kBtu/ft² source) across 35,780 sq ft, including 377,730 kWh of electricity.

What are 224 Westlake's carbon emissions?

224 Westlake reported 7 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.

Working with Seattle building benchmarking records? Pro adds alerts, change history and CSV export ($49/mo); Enterprise adds full national files, the API and an MCP server for AI tools.

Dataset updated . Source: Building Energy Benchmarking disclosure, record seattle:21447:2025.