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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.

ENERGY STAR score
87
band A · 2025
Site EUI
26.8
kBtu/ft²
GHG emissions
6
tCO₂e
GHG intensity
0.1
kgCO₂e/ft²
Floor area
42,084
sq ft
Year built
1981
vintage
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85–10070–8455–691–54
This entry + 6 nearby

Seattle Energy Benchmarking Ordinance (SMC 22.920) · reporting year 2025

Benchmarking record

FieldValue
ENERGY STAR score87 (band A)
Site EUI26.8 kBtu/ft²
Source EUI75.0 kBtu/ft²
GHG emissions6 tCO₂e
GHG intensity0.1 kgCO₂e/ft²
Electricity291,717 kWh
Gross floor area42,084 sq ft
Source recordseattle:25338:2025

The disclosure history

Year over year

YearScoreΔSite EUIGHG emissions
2025latest87+126.8 kBtu/ft²6 tCO₂e
202486+427.1 kBtu/ft²6 tCO₂e
202382-528.2 kBtu/ft²6 tCO₂e
202287-127.5 kBtu/ft²6 tCO₂e
202188+526.5 kBtu/ft²6 tCO₂e
202083+127.1 kBtu/ft²6 tCO₂e
201982+227.7 kBtu/ft²6 tCO₂e
201880+128.0 kBtu/ft²6 tCO₂e
201779+328.7 kBtu/ft²6 tCO₂e
201676-627.1 kBtu/ft²6 tCO₂e
20158225.7 kBtu/ft²6 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.

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Ownership

No owning organisation shown. Names of private individuals in the disclosure are not published here.

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Location

Address
3421 SW ROXBURY ST
State
Washington
ZIP
98126
Coordinates
47.51715, -122.37647

Within ~1 km

Nearby benchmarked buildings

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

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).

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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, “Olympic Park Condominium, Seattle, Washington — 2025 benchmarking disclosure”, https://buildingcensus.com/buildings/seattle/olympic-park-condominium-21b2d473 (data as of October 2, 2026).