BuildingCensus
B

Colman Building

Office in Seattle, WA · 811 1ST AVE · 98104

ENERGY STAR score
84
band B · 2025
Site EUI
55.7
kBtu/ft²
GHG emissions
518
tCO₂e
GHG intensity
3.1
kgCO₂e/ft²
Floor area
166,975
sq ft
Year built
1900
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 score84 (band B)
Site EUI55.7 kBtu/ft²
Source EUI93.4 kBtu/ft²
GHG emissions518 tCO₂e
GHG intensity3.1 kgCO₂e/ft²
Electricity832,049 kWh
Natural gas7,869 therms
Gross floor area166,975 sq ft
Source recordseattle:678:2025

The disclosure history

Year over year

YearScoreΔSite EUIGHG emissions
2025latest84-355.7 kBtu/ft²518 tCO₂e
202487-347.7 kBtu/ft²371 tCO₂e
202390+437.6 kBtu/ft²229 tCO₂e
202286+243.9 kBtu/ft²280 tCO₂e
202184-639.1 kBtu/ft²206 tCO₂e
202090+1745.2 kBtu/ft²233 tCO₂e
201973+165.9 kBtu/ft²347 tCO₂e
201872-1366.7 kBtu/ft²345 tCO₂e
201785-956.4 kBtu/ft²300 tCO₂e
201694+156.7 kBtu/ft²285 tCO₂e
20159358.3 kBtu/ft²285 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.

Own or manage this building? Claim it to correct the record and get compliance alerts.

Location

Address
811 1ST AVE
State
Washington
ZIP
98104
Coordinates
47.60353, -122.33558

Within ~1 km

Nearby benchmarked buildings

See also: most efficient in Seattle · biggest emitters

Frequently asked questions

What is Colman Building's energy grade?

Colman Building scores 84 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 Colman Building use?

Its 2025 site energy-use intensity was 55.7 kBtu/ft² (93.4 kBtu/ft² source) across 166,975 sq ft, including 832,049 kWh of electricity and 7,869 therms of natural gas.

What are Colman Building's carbon emissions?

Colman Building reported 518 tCO₂e of greenhouse-gas emissions (3.1 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:678:2025.