BuildingCensus
C

Prefontaine Building

Office in Seattle, WA · 110 PREFONTAINE PL S · 98104

ENERGY STAR score
62
band C · 2025
Site EUI
43.6
kBtu/ft²
GHG emissions
18
tCO₂e
GHG intensity
0.3
kgCO₂e/ft²
Floor area
73,470
sq ft
Year built
1909
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 score62 (band C)
Site EUI43.6 kBtu/ft²
Source EUI122.0 kBtu/ft²
GHG emissions18 tCO₂e
GHG intensity0.3 kgCO₂e/ft²
Electricity938,263 kWh
Gross floor area73,470 sq ft
Source recordseattle:618:2025

The disclosure history

Year over year

YearScoreΔSite EUIGHG emissions
2025latest62-243.6 kBtu/ft²18 tCO₂e
202464+542.4 kBtu/ft²18 tCO₂e
202359+645.5 kBtu/ft²19 tCO₂e
202253-1149.4 kBtu/ft²21 tCO₂e
202164-1742.6 kBtu/ft²18 tCO₂e
202081+1238.2 kBtu/ft²16 tCO₂e
201969-2147.6 kBtu/ft²18 tCO₂e
201890+1431.0 kBtu/ft²12 tCO₂e
201776-740.1 kBtu/ft²15 tCO₂e
201683±048.6 kBtu/ft²19 tCO₂e
20158348.8 kBtu/ft²19 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
110 PREFONTAINE PL S
State
Washington
ZIP
98104
Coordinates
47.60159, -122.32915

Within ~1 km

Nearby benchmarked buildings

See also: most efficient in Seattle · biggest emitters

Frequently asked questions

What is Prefontaine Building's energy grade?

Prefontaine Building scores 62 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 Prefontaine Building use?

Its 2025 site energy-use intensity was 43.6 kBtu/ft² (122.0 kBtu/ft² source) across 73,470 sq ft, including 938,263 kWh of electricity.

What are Prefontaine Building's carbon emissions?

Prefontaine Building reported 18 tCO₂e of greenhouse-gas emissions (0.3 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:618:2025.