Milwaukee Apartments
Multifamily Housing in Seattle, WA · 664 S KING ST · 98104
At a glance
Milwaukee Apartments is a 86,400-square-foot multifamily housing building at 664 S KING ST in Seattle, Washington, built in 1911.
Seattle Energy Benchmarking Ordinance (SMC 22.920) · reporting year 2025
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | — |
| Source EUI | — |
| GHG emissions | — |
| GHG intensity | — |
| Electricity | 411,048 kWh |
| Gross floor area | 86,400 sq ft |
| Source record | seattle:26995:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | — | — | — | |
| 2024 | 100 | ±0 | 25.5 kBtu/ft² | 27 tCO₂e |
| 2023 | 100 | ±0 | 22.8 kBtu/ft² | 10 tCO₂e |
| 2022 | 100 | ±0 | 23.0 kBtu/ft² | 10 tCO₂e |
| 2021 | 100 | ±0 | 19.2 kBtu/ft² | 8 tCO₂e |
| 2020 | 100 | +1 | 25.4 kBtu/ft² | 9 tCO₂e |
| 2019 | 99 | ±0 | 31.9 kBtu/ft² | 9 tCO₂e |
| 2018 | 99 | ±0 | 35.7 kBtu/ft² | 9 tCO₂e |
| 2017 | 99 | +1 | 37.7 kBtu/ft² | 9 tCO₂e |
| 2016 | 98 | -1 | 37.0 kBtu/ft² | 9 tCO₂e |
| 2015 | 99 | 35.0 kBtu/ft² | 9 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
- 664 S KING ST
- City
- Seattle
- State
- Washington
- ZIP
- 98104
- Coordinates
- 47.59861, -122.32413
Within ~1 km
Nearby benchmarked buildings
- Columbia Centerscore 90
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- Centurylink Field-Stadiumscore —
Stadium (Open) · 1,913,640 sq ft
- Seattle Municipal Towerscore 86
Office · 1,354,987 sq ft
Office · 1,249,055 sq ft
- Madison Centerscore 93
Office · 990,000 sq ft
See also: most efficient in Seattle · biggest emitters
How does Milwaukee Apartments 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.
At 86,400 sq ft, it is roughly in line with the average floor area of 86,468 sq ft for those buildings. It was built in 1911, 72 years earlier 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 Milwaukee Apartments's energy performance changed over time?
BuildingCensus holds 11 Seattle disclosures for Milwaukee Apartments, covering report years 2015–2025. Its ENERGY STAR score went from 99 in 2015 to 100 in 2024 (+1 points); its best year on file was 2020, at 100. Site EUI moved from 35.0 kBtu/ft² (2015) to 25.5 kBtu/ft² (2024), a 27% decrease. Reported emissions went from 9 tCO₂e to 27 tCO₂e over the same span (up 211%).
Which law requires Milwaukee Apartments to report its energy use?
Milwaukee Apartments 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:26995:2025). 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
- Plaza Roberto Maestas (West Bldg)· 86,391 sq ft · score 98 (A)
- Lake City House· 86,283 sq ft · score 73 (B)
- Retail & Residential Building· 86,045 sq ft · score 91 (A)
- Adell Apts· 85,803 sq ft · score 97 (A)
- Willow Court Apartments· 85,695 sq ft · score 86 (A)
- Zephyr Apts· 85,647 sq ft · score 33 (D)
- Multifamily Housing buildings in Seattle· 1,971 benchmarked
- All Seattle benchmarked buildings· Seattle Energy Benchmarking Ordinance (SMC 22.920)
- Most efficient large buildings in Seattle
- Least efficient large buildings in Seattle
- Biggest emitters in Seattle
Frequently asked questions
What is Milwaukee Apartments's energy grade?
Milwaukee Apartments did not report an ENERGY STAR score in its 2025 disclosure.
How much energy does Milwaukee Apartments use?
No energy-use intensity was reported for 2025.
What are Milwaukee Apartments's carbon emissions?
No greenhouse-gas emissions figure was reported for 2025.
Where is Milwaukee Apartments?
Milwaukee Apartments is at 664 S KING ST, in Seattle, Washington 98104. Its coordinates are 47.59861, -122.32413 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is Milwaukee Apartments and when was it built?
Milwaukee Apartments has 86,400 sq ft of gross floor area, as reported in its 2025 disclosure. The disclosure lists 1911 as its year built. It is classed as multifamily housing.
Is Milwaukee Apartments 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, “Milwaukee Apartments, Seattle, Washington — 2025 benchmarking disclosure”, https://buildingcensus.com/buildings/seattle/milwaukee-apartments-3e061e3b (data as of October 2, 2026).