1238 Alki Condominium
Multifamily Housing in Seattle, WA · 1238 ALKI AVE SW · 98116
At a glance
1238 Alki Condominium is a 25,200-square-foot multifamily housing building at 1238 ALKI AVE SW in Seattle, Washington, built in 2002. In its 2025 Seattle benchmarking disclosure it reported a site energy-use intensity of 29.5 kBtu/ft² and 20 tCO₂e of greenhouse-gas emissions.
Seattle Energy Benchmarking Ordinance (SMC 22.920) · reporting year 2025
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 29.5 kBtu/ft² |
| Source EUI | 60.5 kBtu/ft² |
| GHG emissions | 20 tCO₂e |
| GHG intensity | 0.8 kgCO₂e/ft² |
| Electricity | 130,951 kWh |
| Natural gas | 3,331 therms |
| Gross floor area | 25,200 sq ft |
| Source record | seattle:25857:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | — | 29.5 kBtu/ft² | 20 tCO₂e | |
| 2024 | — | 30.3 kBtu/ft² | 21 tCO₂e | |
| 2023 | — | 29.2 kBtu/ft² | 19 tCO₂e | |
| 2022 | — | 30.7 kBtu/ft² | 19 tCO₂e | |
| 2021 | — | 30.2 kBtu/ft² | 18 tCO₂e | |
| 2020 | — | 30.6 kBtu/ft² | 18 tCO₂e | |
| 2019 | — | 30.0 kBtu/ft² | 17 tCO₂e | |
| 2018 | — | 29.3 kBtu/ft² | 17 tCO₂e | |
| 2017 | — | 30.7 kBtu/ft² | 18 tCO₂e | |
| 2016 | — | 31.7 kBtu/ft² | 19 tCO₂e | |
| 2015 | — | 30.8 kBtu/ft² | 18 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.
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
- 1238 ALKI AVE SW
- City
- Seattle
- State
- Washington
- ZIP
- 98116
- Coordinates
- 47.59376, -122.38936
Within ~1 km
Nearby benchmarked buildings
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- Seabird Condominiumscore 76
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- Harbor Avenue Campusscore —
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- Alki Condominiumscore 49
Multifamily Housing · 45,878 sq ft
- Waterside At Alki Beach Condominiumscore 100
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See also: most efficient in Seattle · biggest emitters
How does 1238 Alki Condominium compare with other multifamily housing buildings in Seattle?
The latest disclosures cover 1,971 multifamily housing buildings in Seattle, out of 3,871 buildings citywide. Its site EUI of 29.5 kBtu/ft² is about 15% below the average of 34.9 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 0.8 kgCO₂e/ft² is roughly in line with the group average of 0.7 kgCO₂e/ft².
At 25,200 sq ft, it is about 71% below the average floor area of 86,468 sq ft for those buildings. It was built in 2002, 19 years later than the group's average year built (1983). Across all 24 jurisdictions BuildingCensus covers, the 59,945 multifamily housing buildings average an ENERGY STAR score of 70 and a site EUI of 59.0 kBtu/ft².
How has 1238 Alki Condominium's energy performance changed over time?
BuildingCensus holds 11 Seattle disclosures for 1238 Alki Condominium, covering report years 2015–2025. Site EUI moved from 30.8 kBtu/ft² (2015) to 29.5 kBtu/ft² (2025), a 4% decrease. Reported emissions went from 18 tCO₂e to 20 tCO₂e over the same span (up 9%).
What does a site EUI of 29.5 kBtu/ft² mean?
Site energy-use intensity (EUI) is the energy a building uses on site in a year divided by its floor area, in thousand Btu per square foot — lower is more efficient. 1238 Alki Condominium's 29.5 kBtu/ft² across 25,200 sq ft works out to about 0.7 billion Btu (218 MWh-equivalent) in 2025. Its source EUI of 60.5 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 130,951 kWh of electricity and 3,331 therms of natural gas for the year.
Which law requires 1238 Alki Condominium to report its energy use?
1238 Alki Condominium reports under the Seattle Energy Benchmarking Ordinance (SMC 22.920), the legal basis of Seattle's Building Energy Benchmarking program, which publishes each covered building's annual benchmarking results. The record shown here is the report-year 2025 disclosure (source record seattle:25857:2025). 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.
More multifamily housing buildings in Seattle
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- Multifamily Housing buildings in Seattle· 1,971 benchmarked
- All Seattle benchmarked buildings· Seattle Energy Benchmarking Ordinance (SMC 22.920)
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Frequently asked questions
What is 1238 Alki Condominium's energy grade?
1238 Alki Condominium did not report an ENERGY STAR score in its 2025 disclosure, but its site energy-use intensity was 29.5 kBtu/ft².
How much energy does 1238 Alki Condominium use?
Its 2025 site energy-use intensity was 29.5 kBtu/ft² (60.5 kBtu/ft² source) across 25,200 sq ft, including 130,951 kWh of electricity and 3,331 therms of natural gas.
What are 1238 Alki Condominium's carbon emissions?
1238 Alki Condominium reported 20 tCO₂e of greenhouse-gas emissions (0.8 kgCO₂e/ft²) for 2025.
Where is 1238 Alki Condominium?
1238 Alki Condominium is at 1238 ALKI AVE SW, in Seattle, Washington 98116. Its coordinates are 47.59376, -122.38936 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is 1238 Alki Condominium and when was it built?
1238 Alki Condominium has 25,200 sq ft of gross floor area, as reported in its 2025 disclosure. The disclosure lists 2002 as its year built. It is classed as multifamily housing.
Is 1238 Alki Condominium covered by the Seattle Energy Benchmarking Ordinance (SMC 22.920)?
Yes — it appears in the 2025 Building Energy Benchmarking disclosure, which lists the buildings reporting under the Seattle Energy Benchmarking Ordinance (SMC 22.920).
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About this data
Source: Building Energy Benchmarking (Seattle Energy Benchmarking Ordinance (SMC 22.920)), as published October 2, 2026. See the methodology for how records are matched, cleaned and scored.
Cite as: BuildingCensus, “1238 Alki Condominium, Seattle, Washington — 2025 benchmarking disclosure”, https://buildingcensus.com/buildings/seattle/1238-alki-condominium-01324cc3 (data as of October 2, 2026).