At a glance
St Joseph's Church is a 40,137-square-foot office building at 732 18TH AVE E in Seattle, Washington, built in 1929. In its 2025 Seattle benchmarking disclosure it reported an ENERGY STAR score of 95 out of 100 (grade A), a site energy-use intensity of 19.2 kBtu/ft² and 17 tCO₂e of greenhouse-gas emissions. That score is higher than 84% of the 378 scored office buildings in Seattle.
Seattle Energy Benchmarking Ordinance (SMC 22.920) · reporting year 2025
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 95 (band A) |
| Site EUI | 19.2 kBtu/ft² |
| Source EUI | 42.1 kBtu/ft² |
| GHG emissions | 17 tCO₂e |
| GHG intensity | 0.4 kgCO₂e/ft² |
| Electricity | 147,362 kWh |
| Natural gas | 2,689 therms |
| Gross floor area | 40,137 sq ft |
| Source record | seattle:20637:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | 95 | +1 | 19.2 kBtu/ft² | 17 tCO₂e |
| 2024 | 94 | 19.9 kBtu/ft² | 17 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
- 732 18TH AVE E
- City
- Seattle
- State
- Washington
- ZIP
- 98112
- Coordinates
- 47.62623, -122.30822
Within ~1 km
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See also: most efficient in Seattle · biggest emitters
How does St Joseph's Church compare with other office buildings in Seattle?
The latest disclosures cover 497 office buildings in Seattle, out of 3,871 buildings citywide. St Joseph's Church's ENERGY STAR score of 95 compares with an average of 76 across the 378 that report a score; it scores higher than 84% of them and lower than 12%. Its site EUI of 19.2 kBtu/ft² is about 57% 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 0.4 kgCO₂e/ft² is about 40% below the group average of 0.7 kgCO₂e/ft².
At 40,137 sq ft, it is about 80% below the average floor area of 196,452 sq ft for those buildings. It was built in 1929, 36 years earlier 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 St Joseph's Church's energy performance changed over time?
BuildingCensus holds 2 Seattle disclosures for St Joseph's Church, covering report years 2024–2025. Its ENERGY STAR score went from 94 in 2024 to 95 in 2025 (+1 points). Site EUI moved from 19.9 kBtu/ft² (2024) to 19.2 kBtu/ft² (2025), a 4% decrease. Reported emissions went from 17 tCO₂e to 17 tCO₂e over the same span (down 3%).
What does an ENERGY STAR score of 95 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 95 means the building performs better than about 95% of its national peers. BuildingCensus bands the score into report-card grades; 95 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. St Joseph's Church's 19.2 kBtu/ft² across 40,137 sq ft works out to about 0.8 billion Btu (226 MWh-equivalent) in 2025. Its source EUI of 42.1 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 147,362 kWh of electricity and 2,689 therms of natural gas for the year.
Which law requires St Joseph's Church to report its energy use?
St Joseph's Church 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:20637:2025). 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
- 4 Nick - Office· 40,067 sq ft · EUI 45.6 kBtu/ft²
- Hathaway Bldg· 40,029 sq ft · score 72 (B)
- Holyoke Building· 39,960 sq ft · score 76 (B)
- Rcc· 39,953 sq ft · score 70 (B)
- NORTHGATE EXECUTIVE CENTER A· 39,927 sq ft · score 18 (D)
- Fremont Space· 39,926 sq ft · EUI 32.5 kBtu/ft²
- 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 St Joseph's Church's energy grade?
St Joseph's Church scores 95 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 St Joseph's Church use?
Its 2025 site energy-use intensity was 19.2 kBtu/ft² (42.1 kBtu/ft² source) across 40,137 sq ft, including 147,362 kWh of electricity and 2,689 therms of natural gas.
What are St Joseph's Church's carbon emissions?
St Joseph's Church reported 17 tCO₂e of greenhouse-gas emissions (0.4 kgCO₂e/ft²) for 2025.
Where is St Joseph's Church?
St Joseph's Church is at 732 18TH AVE E, in Seattle, Washington 98112. Its coordinates are 47.62623, -122.30822 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is St Joseph's Church and when was it built?
St Joseph's Church has 40,137 sq ft of gross floor area, as reported in its 2025 disclosure. The disclosure lists 1929 as its year built. It is classed as office.
Is St Joseph's Church 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, “St Joseph's Church, Seattle, Washington — 2025 benchmarking disclosure”, https://buildingcensus.com/buildings/seattle/st-joseph-s-church-da14d860 (data as of October 2, 2026).