BuildingCensus
B

Jefferson Building

Office in Seattle, WA · 1401 E JEFFERSON ST · 98122

ENERGY STAR score
79
band B · 2025
Site EUI
47.3
kBtu/ft²
GHG emissions
32
tCO₂e
GHG intensity
0.6
kgCO₂e/ft²
Floor area
72,613
sq ft
Year built
1984
vintage
◆ Loading map…
85–10070–8455–691–54
This entry + 6 nearby

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

Benchmarking record

FieldValue
ENERGY STAR score79 (band B)
Site EUI47.3 kBtu/ft²
Source EUI117.6 kBtu/ft²
GHG emissions32 tCO₂e
GHG intensity0.6 kgCO₂e/ft²
Electricity566,889 kWh
Natural gas4,210 therms
Gross floor area72,613 sq ft
Source recordseattle:24359:2025

The disclosure history

Year over year

YearScoreΔSite EUIGHG emissions
2025latest79+347.3 kBtu/ft²32 tCO₂e
202476-150.2 kBtu/ft²38 tCO₂e
202377+149.4 kBtu/ft²39 tCO₂e
202276±052.6 kBtu/ft²45 tCO₂e
202176-352.1 kBtu/ft²44 tCO₂e
202079+850.1 kBtu/ft²46 tCO₂e
201971-1055.1 kBtu/ft²46 tCO₂e
201881+1247.1 kBtu/ft²41 tCO₂e
201769-1553.7 kBtu/ft²47 tCO₂e
201684-152.2 kBtu/ft²40 tCO₂e
20158550.5 kBtu/ft²34 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
1401 E JEFFERSON ST
State
Washington
ZIP
98122
Coordinates
47.60592, -122.31367

Within ~1 km

Nearby benchmarked buildings

See also: most efficient in Seattle · biggest emitters

Frequently asked questions

What is Jefferson Building's energy grade?

Jefferson Building scores 79 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 Jefferson Building use?

Its 2025 site energy-use intensity was 47.3 kBtu/ft² (117.6 kBtu/ft² source) across 72,613 sq ft, including 566,889 kWh of electricity and 4,210 therms of natural gas.

What are Jefferson Building's carbon emissions?

Jefferson Building reported 32 tCO₂e of greenhouse-gas emissions (0.6 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:24359:2025.