Clarwood Apartments
Multifamily Housing in Seattle, WA · 805 MARION ST · 98104
At a glance
Clarwood Apartments is a 24,900-square-foot multifamily housing building at 805 MARION ST in Seattle, Washington, built in 1920. In its 2025 Seattle benchmarking disclosure it reported an ENERGY STAR score of 44 out of 100 (grade D), a site energy-use intensity of 96.8 kBtu/ft² and 113 tCO₂e of greenhouse-gas emissions. That score is higher than 6% 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 | 44 (band D) |
| Site EUI | 96.8 kBtu/ft² |
| Source EUI | 123.2 kBtu/ft² |
| GHG emissions | 113 tCO₂e |
| GHG intensity | 4.5 kgCO₂e/ft² |
| Electricity | 89,554 kWh |
| Natural gas | 21,058 therms |
| Gross floor area | 24,900 sq ft |
| Source record | seattle:23288:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | 44 | -27 | 96.8 kBtu/ft² | 113 tCO₂e |
| 2024 | 71 | -4 | 74.9 kBtu/ft² | 83 tCO₂e |
| 2023 | 75 | +73 | 71.9 kBtu/ft² | 78 tCO₂e |
| 2022 | 2 | -3 | 173.6 kBtu/ft² | 214 tCO₂e |
| 2021 | 5 | -89 | 154.6 kBtu/ft² | 190 tCO₂e |
| 2020 | 94 | +12 | 49.6 kBtu/ft² | 50 tCO₂e |
| 2019 | 82 | +21 | 72.8 kBtu/ft² | 86 tCO₂e |
| 2018 | 61 | 83.1 kBtu/ft² | 95 tCO₂e | |
| 2017 | — | 90.9 kBtu/ft² | 105 tCO₂e | |
| 2016 | 68 | +7 | 75.2 kBtu/ft² | 85 tCO₂e |
| 2015 | 61 | 81.1 kBtu/ft² | 93 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.
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Location
- Address
- 805 MARION ST
- City
- Seattle
- State
- Washington
- ZIP
- 98104
- Coordinates
- 47.60733, -122.32727
Within ~1 km
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See also: most efficient in Seattle · biggest emitters
How does Clarwood 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. Clarwood Apartments's ENERGY STAR score of 44 compares with an average of 83 across the 1,652 that report a score; it scores higher than 6% of them and lower than 94%. Its site EUI of 96.8 kBtu/ft² is about 177% above the average of 34.9 kBtu/ft² — it uses more energy per square foot than the typical building in that group. Its emissions intensity of 4.5 kgCO₂e/ft² is about 549% above the group average of 0.7 kgCO₂e/ft².
At 24,900 sq ft, it is about 71% below the average floor area of 86,468 sq ft for those buildings. It was built in 1920, 63 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 Clarwood Apartments's energy performance changed over time?
BuildingCensus holds 11 Seattle disclosures for Clarwood Apartments, covering report years 2015–2025. Its ENERGY STAR score went from 61 in 2015 to 44 in 2025 (-17 points); its best year on file was 2020, at 94. Site EUI moved from 81.1 kBtu/ft² (2015) to 96.8 kBtu/ft² (2025), an 19% increase. Reported emissions went from 93 tCO₂e to 113 tCO₂e over the same span (up 21%).
What does an ENERGY STAR score of 44 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 44 means the building performs better than about 44% of its national peers. BuildingCensus bands the score into report-card grades; 44 falls in band D — lowest band (1–54). It sits 31 points below 75, the threshold for ENERGY STAR certification. 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. Clarwood Apartments's 96.8 kBtu/ft² across 24,900 sq ft works out to about 2.4 billion Btu (706 MWh-equivalent) in 2025. Its source EUI of 123.2 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 89,554 kWh of electricity and 21,058 therms of natural gas for the year.
Which law requires Clarwood Apartments to report its energy use?
Clarwood 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:23288:2025). 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
- Stone Court· 24,880 sq ft · score 91 (A)
- Kerner-Scott House· 24,880 sq ft · score 71 (B)
- Belcourt Place Condominium· 24,864 sq ft · score 73 (B)
- Harbor Lights West Condominium· 24,847 sq ft · score 100 (A)
- San Marco Apartments· 24,840 sq ft · score 91 (A)
- Borsen· 24,837 sq ft · score 94 (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 Clarwood Apartments's energy grade?
Clarwood Apartments scores 44 out of 100 on ENERGY STAR — band D, lowest band (1–54) — in its 2025 Seattle disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does Clarwood Apartments use?
Its 2025 site energy-use intensity was 96.8 kBtu/ft² (123.2 kBtu/ft² source) across 24,900 sq ft, including 89,554 kWh of electricity and 21,058 therms of natural gas.
What are Clarwood Apartments's carbon emissions?
Clarwood Apartments reported 113 tCO₂e of greenhouse-gas emissions (4.5 kgCO₂e/ft²) for 2025.
Where is Clarwood Apartments?
Clarwood Apartments is at 805 MARION ST, in Seattle, Washington 98104. Its coordinates are 47.60733, -122.32727 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is Clarwood Apartments and when was it built?
Clarwood Apartments has 24,900 sq ft of gross floor area, as reported in its 2025 disclosure. The disclosure lists 1920 as its year built. It is classed as multifamily housing.
Is Clarwood 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, “Clarwood Apartments, Seattle, Washington — 2025 benchmarking disclosure”, https://buildingcensus.com/buildings/seattle/clarwood-apartments-4ead72cb (data as of October 2, 2026).