BuildingCensus
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Chasselton Apts

Multifamily Housing in Seattle, WA · 1017 BOREN AVE · 98104

ENERGY STAR score
—
not reported · 2025
Site EUI
52.9
kBtu/ft²
GHG emissions
120
tCO₂e
GHG intensity
2.3
kgCO₂e/ft²
Floor area
51,900
sq ft
Year built
1925
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 score—
Site EUI52.9 kBtu/ft²
Source EUI72.4 kBtu/ft²
GHG emissions120 tCO₂e
GHG intensity2.3 kgCO₂e/ft²
Electricity145,835 kWh
Natural gas22,502 therms
Gross floor area51,900 sq ft
Source recordseattle:23409:2025

The disclosure history

Year over year

YearScoreΔSite EUIGHG emissions
2025latest—52.9 kBtu/ft²120 tCO₂e
2024—54.3 kBtu/ft²127 tCO₂e
2023—55.0 kBtu/ft²127 tCO₂e
2022—88.5 kBtu/ft²223 tCO₂e
2021—98.9 kBtu/ft²251 tCO₂e
2020—40.5 kBtu/ft²90 tCO₂e
2019—58.1 kBtu/ft²140 tCO₂e
2018—55.2 kBtu/ft²131 tCO₂e
2017—59.6 kBtu/ft²142 tCO₂e
201677-252.9 kBtu/ft²125 tCO₂e
20157951.2 kBtu/ft²119 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
1017 BOREN AVE
State
Washington
ZIP
98104
Coordinates
47.60973, -122.32594

Within ~1 km

Nearby benchmarked buildings

See also: most efficient in Seattle · biggest emitters

Frequently asked questions

What is Chasselton Apts's energy grade?

Chasselton Apts did not report an ENERGY STAR score in its 2025 disclosure, but its site energy-use intensity was 52.9 kBtu/ft².

How much energy does Chasselton Apts use?

Its 2025 site energy-use intensity was 52.9 kBtu/ft² (72.4 kBtu/ft² source) across 51,900 sq ft, including 145,835 kWh of electricity and 22,502 therms of natural gas.

What are Chasselton Apts's carbon emissions?

Chasselton Apts reported 120 tCO₂e of greenhouse-gas emissions (2.3 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:23409:2025.