Olympic Park Condominium
Multifamily Housing in Seattle, WA · 3421 SW ROXBURY ST · 98126
At a glance
Olympic Park Condominium is a 42,084-square-foot multifamily housing building at 3421 SW ROXBURY ST in Seattle, Washington, built in 1981. In its 2025 Seattle benchmarking disclosure it reported an ENERGY STAR score of 87 out of 100 (grade A), a site energy-use intensity of 26.8 kBtu/ft² and 6 tCO₂e of greenhouse-gas emissions. That score is higher than 41% 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 | 87 (band A) |
| Site EUI | 26.8 kBtu/ft² |
| Source EUI | 75.0 kBtu/ft² |
| GHG emissions | 6 tCO₂e |
| GHG intensity | 0.1 kgCO₂e/ft² |
| Electricity | 291,717 kWh |
| Gross floor area | 42,084 sq ft |
| Source record | seattle:25338:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | 87 | +1 | 26.8 kBtu/ft² | 6 tCO₂e |
| 2024 | 86 | +4 | 27.1 kBtu/ft² | 6 tCO₂e |
| 2023 | 82 | -5 | 28.2 kBtu/ft² | 6 tCO₂e |
| 2022 | 87 | -1 | 27.5 kBtu/ft² | 6 tCO₂e |
| 2021 | 88 | +5 | 26.5 kBtu/ft² | 6 tCO₂e |
| 2020 | 83 | +1 | 27.1 kBtu/ft² | 6 tCO₂e |
| 2019 | 82 | +2 | 27.7 kBtu/ft² | 6 tCO₂e |
| 2018 | 80 | +1 | 28.0 kBtu/ft² | 6 tCO₂e |
| 2017 | 79 | +3 | 28.7 kBtu/ft² | 6 tCO₂e |
| 2016 | 76 | -6 | 27.1 kBtu/ft² | 6 tCO₂e |
| 2015 | 82 | 25.7 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
- 3421 SW ROXBURY ST
- City
- Seattle
- State
- Washington
- ZIP
- 98126
- Coordinates
- 47.51715, -122.37647
Within ~1 km
Nearby benchmarked buildings
- Target Storescore 81
Retail Store · 102,500 sq ft
K-12 School · 78,972 sq ft
K-12 School · 46,797 sq ft
- Westside Schoolscore 97
K-12 School · 35,844 sq ft
- Barton Court Aptsscore 100
Multifamily Housing · 31,499 sq ft
- Summit Atlas Charter Schoolscore 87
K-12 School · 23,772 sq ft
See also: most efficient in Seattle · biggest emitters
How does Olympic Park 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. Olympic Park Condominium's ENERGY STAR score of 87 compares with an average of 83 across the 1,652 that report a score; it scores higher than 41% of them and lower than 57%. Its site EUI of 26.8 kBtu/ft² is about 23% 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 0.1 kgCO₂e/ft² is about 79% below the group average of 0.7 kgCO₂e/ft².
At 42,084 sq ft, it is about half of the average floor area of 86,468 sq ft for those buildings. Its 1981 construction date is close to 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 Olympic Park Condominium's energy performance changed over time?
BuildingCensus holds 11 Seattle disclosures for Olympic Park Condominium, covering report years 2015–2025. Its ENERGY STAR score went from 82 in 2015 to 87 in 2025 (+5 points); its best year on file was 2021, at 88. Site EUI moved from 25.7 kBtu/ft² (2015) to 26.8 kBtu/ft² (2025), an 4% increase. Reported emissions went from 6 tCO₂e to 6 tCO₂e over the same span (up 0%).
What does an ENERGY STAR score of 87 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: a score of 87 means the building performs better than about 87% of its national peers. BuildingCensus bands the score into report-card grades; 87 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. Olympic Park Condominium's 26.8 kBtu/ft² across 42,084 sq ft works out to about 1.1 billion Btu (331 MWh-equivalent) in 2025. Its source EUI of 75.0 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 291,717 kWh of electricity for the year.
Which law requires Olympic Park Condominium to report its energy use?
Olympic Park 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:25338:2025). 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
- Second & Pine Apts· 42,078 sq ft · score 62 (C)
- Terrace View· 42,048 sq ft · score 85 (A)
- June On South Lake· 42,000 sq ft · score 93 (A)
- The Point Apartments· 41,921 sq ft · score 80 (B)
- Gilman Court Apartments· 41,919 sq ft · score 72 (B)
- 500 Broadway Congregate Housing· 41,889 sq ft · score 100 (A)
- 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 Olympic Park Condominium's energy grade?
Olympic Park Condominium scores 87 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 Olympic Park Condominium use?
Its 2025 site energy-use intensity was 26.8 kBtu/ft² (75.0 kBtu/ft² source) across 42,084 sq ft, including 291,717 kWh of electricity.
What are Olympic Park Condominium's carbon emissions?
Olympic Park Condominium reported 6 tCO₂e of greenhouse-gas emissions (0.1 kgCO₂e/ft²) for 2025.
Where is Olympic Park Condominium?
Olympic Park Condominium is at 3421 SW ROXBURY ST, in Seattle, Washington 98126. Its coordinates are 47.51715, -122.37647 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is Olympic Park Condominium and when was it built?
Olympic Park Condominium has 42,084 sq ft of gross floor area, as reported in its 2025 disclosure. The disclosure lists 1981 as its year built. It is classed as multifamily housing.
Is Olympic Park 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).
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, “Olympic Park Condominium, Seattle, Washington — 2025 benchmarking disclosure”, https://buildingcensus.com/buildings/seattle/olympic-park-condominium-21b2d473 (data as of October 2, 2026).