BuildingCensus
C

LAKE UNION BUILDING

Office in Seattle, WA · 1700 WESTLAKE AVE N · 98109

ENERGY STAR score
66
band C · 2024
Site EUI
61.0
kBtu/ft²
GHG emissions
33
tCO₂e
GHG intensity
0.3
kgCO₂e/ft²
Floor area
156,698
sq ft
Year built
1970
vintage
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85–10070–8455–691–54
This entry + 6 nearby

Seattle Energy Benchmarking Ordinance (SMC 22.920) · reporting year 2024

Benchmarking record

FieldValue
ENERGY STAR score66 (band C)
Site EUI61.0 kBtu/ft²
Source EUI170.9 kBtu/ft²
GHG emissions33 tCO₂e
GHG intensity0.3 kgCO₂e/ft²
Electricity1,657,457 kWh
Gross floor area156,698 sq ft
Source recordseattle:605:2024

The disclosure history

Year over year

YearScoreΔSite EUIGHG emissions
2024latest66+561.0 kBtu/ft²33 tCO₂e
202361-164.5 kBtu/ft²35 tCO₂e
202262-566.2 kBtu/ft²38 tCO₂e
202167-1061.8 kBtu/ft²35 tCO₂e
202077+1452.6 kBtu/ft²30 tCO₂e
201963+165.0 kBtu/ft²37 tCO₂e
201862+1065.5 kBtu/ft²37 tCO₂e
201752-1864.3 kBtu/ft²35 tCO₂e
201670+860.3 kBtu/ft²33 tCO₂e
20156272.8 kBtu/ft²40 tCO₂e

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.

Program details →

Ownership

No owner listed in the disclosure.

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Location

Address
1700 WESTLAKE AVE N
State
Washington
ZIP
98109
Coordinates
47.63376, -122.33968

Within ~1 km

Nearby benchmarked buildings

See also: most efficient in Seattle · biggest emitters

Frequently asked questions

What is LAKE UNION BUILDING's energy grade?

LAKE UNION BUILDING scores 66 out of 100 on ENERGY STAR — band C (Below median (55–69)) — in its 2024 Seattle disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.

How much energy does LAKE UNION BUILDING use?

Its 2024 site energy-use intensity was 61.0 kBtu/ft² (170.9 kBtu/ft² source) across 156,698 sq ft, including 1,657,457 kWh of electricity.

What are LAKE UNION BUILDING's carbon emissions?

LAKE UNION BUILDING reported 33 tCO₂e of greenhouse-gas emissions (0.3 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:605:2024.