Seward Park Apts
Multifamily Housing in Seattle, WA · 4911 S ROSE ST · 98118
At a glance
Seward Park Apts is a 20,645-square-foot multifamily housing building at 4911 S ROSE ST in Seattle, Washington, built in 1953. In its 2025 Seattle benchmarking disclosure it reported a site energy-use intensity of 32.5 kBtu/ft² and 4 tCO₂e of greenhouse-gas emissions.
Seattle Energy Benchmarking Ordinance (SMC 22.920) · reporting year 2025
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 32.5 kBtu/ft² |
| Source EUI | 91.1 kBtu/ft² |
| GHG emissions | 4 tCO₂e |
| GHG intensity | 0.2 kgCO₂e/ft² |
| Electricity | 196,880 kWh |
| Gross floor area | 20,645 sq ft |
| Source record | seattle:24150:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | — | 32.5 kBtu/ft² | 4 tCO₂e | |
| 2024 | — | 33.8 kBtu/ft² | 4 tCO₂e | |
| 2023 | — | 36.9 kBtu/ft² | 4 tCO₂e | |
| 2022 | — | 38.4 kBtu/ft² | 5 tCO₂e | |
| 2021 | — | 34.5 kBtu/ft² | 4 tCO₂e | |
| 2020 | — | 32.3 kBtu/ft² | 4 tCO₂e | |
| 2019 | — | 30.2 kBtu/ft² | 4 tCO₂e | |
| 2018 | — | 33.5 kBtu/ft² | 4 tCO₂e | |
| 2017 | — | 37.7 kBtu/ft² | 5 tCO₂e | |
| 2016 | — | 37.2 kBtu/ft² | 5 tCO₂e | |
| 2015 | — | 48.0 kBtu/ft² | 6 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
- 4911 S ROSE ST
- City
- Seattle
- State
- Washington
- ZIP
- 98118
- Coordinates
- 47.52887, -122.27116
Within ~1 km
Nearby benchmarked buildings
- Lake Washington Apartmentsscore 29
Multifamily Housing · 332,900 sq ft
K-12 School · 184,125 sq ft
- Caroline Kline Galland Homescore 93
Senior Living Community · 141,297 sq ft
K-12 School · 138,705 sq ft
- Elizabeth Thomas Homesscore 96
Multifamily Housing · 101,267 sq ft
- Ethiopian Villagescore 93
Multifamily Housing · 92,040 sq ft
See also: most efficient in Seattle · biggest emitters
How does Seward Park 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. Its site EUI of 32.5 kBtu/ft² is roughly in line with 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 0.2 kgCO₂e/ft² is about 73% below the group average of 0.7 kgCO₂e/ft².
At 20,645 sq ft, it is about 76% below the average floor area of 86,468 sq ft for those buildings. It was built in 1953, 30 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 Seward Park Apts's energy performance changed over time?
BuildingCensus holds 11 Seattle disclosures for Seward Park Apts, covering report years 2015–2025. Site EUI moved from 48.0 kBtu/ft² (2015) to 32.5 kBtu/ft² (2025), a 32% decrease. Reported emissions went from 6 tCO₂e to 4 tCO₂e over the same span (down 32%).
What does a site EUI of 32.5 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. Seward Park Apts's 32.5 kBtu/ft² across 20,645 sq ft works out to about 0.7 billion Btu (197 MWh-equivalent) in 2025. Its source EUI of 91.1 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 196,880 kWh of electricity for the year.
Which law requires Seward Park Apts to report its energy use?
Seward Park 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:24150:2025). 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
- Casanita Apts· 20,640 sq ft · score 100 (A)
- De Lorges Condo· 20,639 sq ft · EUI 39.1 kBtu/ft²
- Lambda Chi Alpha Fraternity· 20,629 sq ft
- Costas/Apts/U Seafood· 20,600 sq ft · EUI 66.1 kBtu/ft²
- Galleon Apartments· 20,598 sq ft · score 95 (A)
- Merrill Place Residential Condominium· 20,583 sq ft · EUI 17.9 kBtu/ft²
- 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 Seward Park Apts's energy grade?
Seward Park Apts did not report an ENERGY STAR score in its 2025 disclosure, but its site energy-use intensity was 32.5 kBtu/ft².
How much energy does Seward Park Apts use?
Its 2025 site energy-use intensity was 32.5 kBtu/ft² (91.1 kBtu/ft² source) across 20,645 sq ft, including 196,880 kWh of electricity.
What are Seward Park Apts's carbon emissions?
Seward Park Apts reported 4 tCO₂e of greenhouse-gas emissions (0.2 kgCO₂e/ft²) for 2025.
Where is Seward Park Apts?
Seward Park Apts is at 4911 S ROSE ST, in Seattle, Washington 98118. Its coordinates are 47.52887, -122.27116 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is Seward Park Apts and when was it built?
Seward Park Apts has 20,645 sq ft of gross floor area, as reported in its 2025 disclosure. The disclosure lists 1953 as its year built. It is classed as multifamily housing.
Is Seward Park 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).
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.
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, “Seward Park Apts, Seattle, Washington — 2025 benchmarking disclosure”, https://buildingcensus.com/buildings/seattle/seward-park-apts-1945f6a4 (data as of October 2, 2026).