Post Alley Court - Apts
Multifamily Housing in Seattle, WA · 1408 WESTERN AVE · 98101
At a glance
Post Alley Court - Apts is a 42,765-square-foot multifamily housing building at 1408 WESTERN AVE in Seattle, Washington, built in 1989. In its 2025 Seattle benchmarking disclosure it reported an ENERGY STAR score of 100 out of 100 (grade A), a site energy-use intensity of 0.6 kBtu/ft² and 0 tCO₂e of greenhouse-gas emissions. That score is higher than 88% of the 1,652 scored multifamily housing buildings in Seattle.
Seattle Energy Benchmarking Ordinance (SMC 22.920) · reporting year 2025
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 100 (band A) |
| Site EUI | 0.6 kBtu/ft² |
| Source EUI | 1.6 kBtu/ft² |
| GHG emissions | 0 tCO₂e |
| GHG intensity | — |
| Electricity | 7,089 kWh |
| Gross floor area | 42,765 sq ft |
| Source record | seattle:21479:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | 100 | 0.6 kBtu/ft² | 0 tCO₂e | |
| 2024 | — | — | — | |
| 2023 | 92 | +2 | 32.5 kBtu/ft² | 8 tCO₂e |
| 2022 | 90 | -1 | 34.5 kBtu/ft² | 9 tCO₂e |
| 2021 | 91 | +1 | 33.6 kBtu/ft² | 8 tCO₂e |
| 2020 | 90 | +2 | 33.2 kBtu/ft² | 8 tCO₂e |
| 2019 | 88 | +48 | 34.1 kBtu/ft² | 9 tCO₂e |
| 2018 | 40 | +16 | 54.0 kBtu/ft² | 10 tCO₂e |
| 2017 | 24 | +13 | 59.3 kBtu/ft² | 10 tCO₂e |
| 2016 | 11 | -7 | 63.4 kBtu/ft² | 11 tCO₂e |
| 2015 | 18 | 58.7 kBtu/ft² | 10 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
- 1408 WESTERN AVE
- City
- Seattle
- State
- Washington
- ZIP
- 98101
- Coordinates
- 47.60780, -122.34014
Within ~1 km
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See also: most efficient in Seattle · biggest emitters
How does Post Alley Court - Apts 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. Post Alley Court - Apts's ENERGY STAR score of 100 compares with an average of 83 across the 1,652 that report a score; it scores higher than 88% of them. Its site EUI of 0.6 kBtu/ft² is about 98% below the average of 34.9 kBtu/ft² — it uses less energy per square foot than the typical building in that group.
At 42,765 sq ft, it is about half of the average floor area of 86,468 sq ft for those buildings. It was built in 1989, 6 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 Post Alley Court - Apts's energy performance changed over time?
BuildingCensus holds 11 Seattle disclosures for Post Alley Court - Apts, covering report years 2015–2025. Its ENERGY STAR score went from 18 in 2015 to 100 in 2025 (+82 points). Site EUI moved from 58.7 kBtu/ft² (2015) to 0.6 kBtu/ft² (2025), a 99% decrease. Reported emissions went from 10 tCO₂e to 0 tCO₂e over the same span (down 99%).
What does an ENERGY STAR score of 100 mean?
ENERGY STAR scores run from 1 to 100 and are computed by the EPA's Portfolio Manager as a percentile against similar buildings nationwide, adjusted for climate, size and use: 100 is the top of the scale. BuildingCensus bands the score into report-card grades; 100 falls in band A — high performer (85–100). Scores of 75 or higher meet the threshold for ENERGY STAR certification; certification itself is a separate, verified application that the disclosure does not record. In Seattle, 69% of scored buildings are at 75 or above.
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. Post Alley Court - Apts's 0.6 kBtu/ft² across 42,765 sq ft works out to about 0 billion Btu (8 MWh-equivalent) in 2025. Its source EUI of 1.6 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 7,089 kWh of electricity for the year.
Which law requires Post Alley Court - Apts to report its energy use?
Post Alley Court - Apts 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:21479:2025). 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
- Tempo Apts -2305, -2310, -2300· 42,763 sq ft · score 82 (B)
- Portal Apartments· 42,752 sq ft · score 94 (A)
- Primeau Place· 42,720 sq ft · score 88 (A)
- Mix - Use Apt/Commercial· 42,705 sq ft · score 78 (B)
- Prexy Apartments· 42,677 sq ft · score 100 (A)
- Ok Hotel Apts· 42,534 sq ft · score 74 (B)
- Multifamily Housing buildings in Seattle· 1,971 benchmarked
- All Seattle benchmarked buildings· Seattle Energy Benchmarking Ordinance (SMC 22.920)
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- Biggest emitters in Seattle
Frequently asked questions
What is Post Alley Court - Apts's energy grade?
Post Alley Court - Apts scores 100 out of 100 on ENERGY STAR — band A, high performer (85–100) — in its 2025 Seattle disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does Post Alley Court - Apts use?
Its 2025 site energy-use intensity was 0.6 kBtu/ft² (1.6 kBtu/ft² source) across 42,765 sq ft, including 7,089 kWh of electricity.
What are Post Alley Court - Apts's carbon emissions?
Post Alley Court - Apts reported 0 tCO₂e of greenhouse-gas emissions for 2025.
Where is Post Alley Court - Apts?
Post Alley Court - Apts is at 1408 WESTERN AVE, in Seattle, Washington 98101. Its coordinates are 47.60780, -122.34014 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is Post Alley Court - Apts and when was it built?
Post Alley Court - Apts has 42,765 sq ft of gross floor area, as reported in its 2025 disclosure. The disclosure lists 1989 as its year built. It is classed as multifamily housing.
Is Post Alley Court - Apts 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, “Post Alley Court - Apts, Seattle, Washington — 2025 benchmarking disclosure”, https://buildingcensus.com/buildings/seattle/post-alley-court-apts-29e8225e (data as of October 2, 2026).