Scca - Proton Therapy Center
Medical Office in Seattle, WA · 1570 N 115TH ST · 98133
At a glance
Scca - Proton Therapy Center is a 53,575-square-foot medical office at 1570 N 115TH ST in Seattle, Washington, built in 2012. In its 2025 Seattle benchmarking disclosure it reported an ENERGY STAR score of 1 out of 100 (grade D), a site energy-use intensity of 477.7 kBtu/ft² and 442 tCO₂e of greenhouse-gas emissions. That score is higher than 0% of the 32 scored medical office buildings in Seattle.
Seattle Energy Benchmarking Ordinance (SMC 22.920) · reporting year 2025
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 1 (band D) |
| Site EUI | 477.7 kBtu/ft² |
| Source EUI | 1134.4 kBtu/ft² |
| GHG emissions | 442 tCO₂e |
| GHG intensity | 8.3 kgCO₂e/ft² |
| Electricity | 5,678,569 kWh |
| Natural gas | 62,161 therms |
| Gross floor area | 53,575 sq ft |
| Source record | seattle:49709:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | 1 | ±0 | 477.7 kBtu/ft² | 442 tCO₂e |
| 2024 | 1 | ±0 | 479.2 kBtu/ft² | 462 tCO₂e |
| 2023 | 1 | 476.4 kBtu/ft² | 463 tCO₂e | |
| 2022 | — | — | 114 tCO₂e | |
| 2021 | — | — | 114 tCO₂e | |
| 2020 | 1 | ±0 | 499.9 kBtu/ft² | 476 tCO₂e |
| 2019 | 1 | 501.2 kBtu/ft² | 479 tCO₂e | |
| 2018 | — | 514.4 kBtu/ft² | 516 tCO₂e | |
| 2017 | — | 500.1 kBtu/ft² | 496 tCO₂e | |
| 2016 | — | 593.6 kBtu/ft² | 592 tCO₂e | |
| 2015 | — | 544.9 kBtu/ft² | 571 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
- 1570 N 115TH ST
- City
- Seattle
- State
- Washington
- ZIP
- 98133
- Coordinates
- 47.71286, -122.33635
Within ~1 km
Nearby benchmarked buildings
Hospital (General Medical & Surgical) · 668,027 sq ft
- Galleriascore 92
Multifamily Housing · 227,233 sq ft
- Meridian Medical Pavilionscore 69
Medical Office · 161,789 sq ft
- North Court Aptsscore 81
Multifamily Housing · 123,841 sq ft
- Haller Postscore 70
Multifamily Housing · 103,345 sq ft
- Home Depotscore 80
Retail Store · 101,830 sq ft
See also: most efficient in Seattle · biggest emitters
How does Scca - Proton Therapy Center compare with other medical office buildings in Seattle?
The latest disclosures cover 45 medical office buildings in Seattle, out of 3,871 buildings citywide. Scca - Proton Therapy Center's ENERGY STAR score of 1 compares with an average of 60 across the 32 that report a score; it scores higher than 0% of them and lower than 97%. Its site EUI of 477.7 kBtu/ft² is about 441% above the average of 88.3 kBtu/ft² — it uses more energy per square foot than the typical building in that group. Its emissions intensity of 8.3 kgCO₂e/ft² is about 450% above the group average of 1.5 kgCO₂e/ft².
At 53,575 sq ft, it is about 63% below the average floor area of 145,612 sq ft for those buildings. It was built in 2012, 33 years later than the group's average year built (1979). Across all 24 jurisdictions BuildingCensus covers, the 1,266 medical office buildings average an ENERGY STAR score of 64 and a site EUI of 92.2 kBtu/ft².
How has Scca - Proton Therapy Center's energy performance changed over time?
BuildingCensus holds 11 Seattle disclosures for Scca - Proton Therapy Center, covering report years 2015–2025. Its ENERGY STAR score was 1 in both 2019 and 2025. Site EUI moved from 544.9 kBtu/ft² (2015) to 477.7 kBtu/ft² (2025), a 12% decrease. Reported emissions went from 571 tCO₂e to 442 tCO₂e over the same span (down 23%).
What does an ENERGY STAR score of 1 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: 1 is the bottom of the scale. BuildingCensus bands the score into report-card grades; 1 falls in band D — lowest band (1–54). It sits 74 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. Scca - Proton Therapy Center's 477.7 kBtu/ft² across 53,575 sq ft works out to about 25.6 billion Btu (7,501 MWh-equivalent) in 2025. Its source EUI of 1134.4 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 5,678,569 kWh of electricity and 62,161 therms of natural gas for the year.
Which law requires Scca - Proton Therapy Center to report its energy use?
Scca - Proton Therapy Center 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:49709:2025). 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 medical office buildings in Seattle
- Springbrook Bldg· 45,264 sq ft · score 37 (D)
- Neighborcare Health· 44,745 sq ft · score 94 (A)
- NAVOS PSYCHIATRIC HOSPITAL· 43,615 sq ft
- BASTYR UNIVERSITY MEDICAL OFFICE BUILDING· 41,293 sq ft · score 42 (D)
- VIRGINIA MASON MEDICAL CENTER· 40,304 sq ft
- Fhcrc- 1213 Valley· 40,204 sq ft · score 66 (C)
- Medical Office buildings in Seattle· 45 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 Scca - Proton Therapy Center's energy grade?
Scca - Proton Therapy Center scores 1 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 Scca - Proton Therapy Center use?
Its 2025 site energy-use intensity was 477.7 kBtu/ft² (1134.4 kBtu/ft² source) across 53,575 sq ft, including 5,678,569 kWh of electricity and 62,161 therms of natural gas.
What are Scca - Proton Therapy Center's carbon emissions?
Scca - Proton Therapy Center reported 442 tCO₂e of greenhouse-gas emissions (8.3 kgCO₂e/ft²) for 2025.
Where is Scca - Proton Therapy Center?
Scca - Proton Therapy Center is at 1570 N 115TH ST, in Seattle, Washington 98133. Its coordinates are 47.71286, -122.33635 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is Scca - Proton Therapy Center and when was it built?
Scca - Proton Therapy Center has 53,575 sq ft of gross floor area, as reported in its 2025 disclosure. The disclosure lists 2012 as its year built. It is classed as medical office.
Is Scca - Proton Therapy Center 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, “Scca - Proton Therapy Center, Seattle, Washington — 2025 benchmarking disclosure”, https://buildingcensus.com/buildings/seattle/scca-proton-therapy-center-d97ef8d4 (data as of October 2, 2026).