At a glance
Building O, 655 S ORCAS ST is a 25,872-square-foot office building in Seattle, Washington, built in 1969. In its 2025 Seattle benchmarking disclosure it reported a site energy-use intensity of 38.2 kBtu/ft² and 23 tCO₂e of greenhouse-gas emissions.
Seattle Energy Benchmarking Ordinance (SMC 22.920) · reporting year 2025
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 38.2 kBtu/ft² |
| Source EUI | 82.7 kBtu/ft² |
| GHG emissions | 23 tCO₂e |
| GHG intensity | 0.9 kgCO₂e/ft² |
| Electricity | 188,575 kWh |
| Natural gas | 3,656 therms |
| Gross floor area | 25,872 sq ft |
| Source record | seattle:20988:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | — | 38.2 kBtu/ft² | 23 tCO₂e | |
| 2024 | — | 39.8 kBtu/ft² | 25 tCO₂e | |
| 2023 | — | 51.8 kBtu/ft² | 39 tCO₂e | |
| 2022 | — | 40.3 kBtu/ft² | 22 tCO₂e | |
| 2021 | — | 52.8 kBtu/ft² | 43 tCO₂e | |
| 2020 | — | 68.3 kBtu/ft² | 66 tCO₂e | |
| 2019 | — | 74.6 kBtu/ft² | 69 tCO₂e | |
| 2018 | — | 73.9 kBtu/ft² | 64 tCO₂e | |
| 2017 | 33 | -8 | 92.4 kBtu/ft² | 78 tCO₂e |
| 2016 | 41 | -7 | 96.0 kBtu/ft² | 81 tCO₂e |
| 2015 | 48 | 86.3 kBtu/ft² | 69 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
- 655 S ORCAS ST
- City
- Seattle
- State
- Washington
- ZIP
- 98108
- Coordinates
- 47.55127, -122.32576
Within ~1 km
Nearby benchmarked buildings
Mixed Use Property · 733,533 sq ft
- Georgetown Squaredscore 74
Office · 390,295 sq ft
- 6100 Buildingscore 94
Office · 238,148 sq ft
- Terreno 1st Ave Southscore 75
Non-Refrigerated Warehouse · 234,144 sq ft
- Seattle Design Centerscore —
Enclosed Mall · 156,188 sq ft
Parking · 127,065 sq ft
See also: most efficient in Seattle · biggest emitters
How does Building O, 655 S ORCAS ST compare with other office buildings in Seattle?
The latest disclosures cover 497 office buildings in Seattle, out of 3,871 buildings citywide. Its site EUI of 38.2 kBtu/ft² is about 15% below the average of 44.8 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 0.9 kgCO₂e/ft² is about 23% above the group average of 0.7 kgCO₂e/ft².
At 25,872 sq ft, it is about 87% below the average floor area of 196,452 sq ft for those buildings. It was built in 1969, 4 years later than the group's average year built (1965). Across all 24 jurisdictions BuildingCensus covers, the 15,264 office buildings average an ENERGY STAR score of 73 and a site EUI of 59.3 kBtu/ft².
How has Building O, 655 S ORCAS ST's energy performance changed over time?
BuildingCensus holds 11 Seattle disclosures for Building O, 655 S ORCAS ST, covering report years 2015–2025. Its ENERGY STAR score went from 48 in 2015 to 33 in 2017 (-15 points); its best year on file was 2015, at 48. Site EUI moved from 86.3 kBtu/ft² (2015) to 38.2 kBtu/ft² (2025), a 56% decrease. Reported emissions went from 69 tCO₂e to 23 tCO₂e over the same span (down 66%).
What does a site EUI of 38.2 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. Building O, 655 S ORCAS ST's 38.2 kBtu/ft² across 25,872 sq ft works out to about 1 billion Btu (290 MWh-equivalent) in 2025. Its source EUI of 82.7 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 188,575 kWh of electricity and 3,656 therms of natural gas for the year.
Which law requires Building O, 655 S ORCAS ST to report its energy use?
Building O, 655 S ORCAS ST 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:20988:2025). 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 office buildings in Seattle
- Canal Building· 25,859 sq ft · score 76 (B)
- Jewish Family Service· 25,834 sq ft
- Seattle City Light Technical Metering Operations· 25,658 sq ft · score 54 (D)
- 246 Nick -2 Nickerson· 25,262 sq ft · score 26 (D)
- SWEDISH HOSPITAL MEDICAL CENTER Cherry Bldg· 25,151 sq ft · score 94 (A)
- Office Building, 9620 STONE AVE N· 25,111 sq ft · score 86 (A)
- Office buildings in Seattle· 497 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 Building O, 655 S ORCAS ST's energy grade?
Building O, 655 S ORCAS ST did not report an ENERGY STAR score in its 2025 disclosure, but its site energy-use intensity was 38.2 kBtu/ft².
How much energy does Building O, 655 S ORCAS ST use?
Its 2025 site energy-use intensity was 38.2 kBtu/ft² (82.7 kBtu/ft² source) across 25,872 sq ft, including 188,575 kWh of electricity and 3,656 therms of natural gas.
What are Building O, 655 S ORCAS ST's carbon emissions?
Building O, 655 S ORCAS ST reported 23 tCO₂e of greenhouse-gas emissions (0.9 kgCO₂e/ft²) for 2025.
Where is Building O, 655 S ORCAS ST?
Building O, 655 S ORCAS ST is in Seattle, Washington 98108. Its coordinates are 47.55127, -122.32576 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is Building O, 655 S ORCAS ST and when was it built?
Building O, 655 S ORCAS ST has 25,872 sq ft of gross floor area, as reported in its 2025 disclosure. The disclosure lists 1969 as its year built. It is classed as office.
Is Building O, 655 S ORCAS ST 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, “Building O, 655 S ORCAS ST, Seattle, Washington — 2025 benchmarking disclosure”, https://buildingcensus.com/buildings/seattle/building-o-6c246e71 (data as of October 2, 2026).