Knights Of Columbus Bldg
Multifamily Housing in Seattle, WA · 722 E UNION ST · 98122
At a glance
Knights Of Columbus Bldg is a 33,708-square-foot multifamily housing building at 722 E UNION ST in Seattle, Washington, built in 1912. In its 2025 Seattle benchmarking disclosure it reported an ENERGY STAR score of 100 out of 100 (grade A), a site energy-use intensity of 13.9 kBtu/ft² and 93 tCO₂e of greenhouse-gas emissions. That score is higher than 88% 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 | 100 (band A) |
| Site EUI | 13.9 kBtu/ft² |
| Source EUI | 23.8 kBtu/ft² |
| GHG emissions | 93 tCO₂e |
| GHG intensity | 0.5 kgCO₂e/ft² |
| Electricity | 297,493 kWh |
| Natural gas | 16,546 therms |
| Gross floor area | 33,708 sq ft |
| Source record | seattle:27244:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | 100 | ±0 | 13.9 kBtu/ft² | 93 tCO₂e |
| 2024 | 100 | 15.3 kBtu/ft² | 81 tCO₂e | |
| 2017 | — | 17.9 kBtu/ft² | 19 tCO₂e | |
| 2016 | — | 23.3 kBtu/ft² | 20 tCO₂e | |
| 2015 | — | 22.4 kBtu/ft² | 16 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
- 722 E UNION ST
- City
- Seattle
- State
- Washington
- ZIP
- 98122
- Coordinates
- 47.61314, -122.32262
Within ~1 km
Nearby benchmarked buildings
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Parking · 2,080,885 sq ft
Office · 1,249,055 sq ft
- Ovationscore 94
Multifamily Housing · 766,545 sq ft
- Horizon Housescore 92
Senior Living Community · 756,740 sq ft
Medical Office · 726,103 sq ft
See also: most efficient in Seattle · biggest emitters
How does Knights Of Columbus Bldg 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. Knights Of Columbus Bldg's ENERGY STAR score of 100 compares with an average of 83 across the 1,652 that report a score; it scores higher than 88% of them. Its site EUI of 13.9 kBtu/ft² is about 60% 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 0.5 kgCO₂e/ft² is about 30% below the group average of 0.7 kgCO₂e/ft².
At 33,708 sq ft, it is about 61% below the average floor area of 86,468 sq ft for those buildings. It was built in 1912, 71 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 Knights Of Columbus Bldg's energy performance changed over time?
BuildingCensus holds 5 Seattle disclosures for Knights Of Columbus Bldg, covering report years 2015, 2016, 2017, 2024, 2025. Its ENERGY STAR score was 100 in both 2024 and 2025. Site EUI moved from 22.4 kBtu/ft² (2015) to 13.9 kBtu/ft² (2025), a 38% decrease. Reported emissions went from 16 tCO₂e to 93 tCO₂e over the same span (up 477%).
What does an ENERGY STAR score of 100 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: 100 is the top of the scale. BuildingCensus bands the score into report-card grades; 100 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. Knights Of Columbus Bldg's 13.9 kBtu/ft² across 33,708 sq ft works out to about 0.5 billion Btu (137 MWh-equivalent) in 2025. Its source EUI of 23.8 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 297,493 kWh of electricity and 16,546 therms of natural gas for the year.
Which law requires Knights Of Columbus Bldg to report its energy use?
Knights Of Columbus Bldg 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:27244:2025). 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
- Summit View· 33,692 sq ft · score 95 (A)
- The Local 422· 33,625 sq ft · score 95 (A)
- Ballard Gilman· 33,622 sq ft · score 100 (A)
- Sunrise Cascade· 33,480 sq ft · score 100 (A)
- Overlook At Magnolia (Bldg H)· 33,466 sq ft · score 84 (B)
- Lakehurst Condominium· 33,456 sq ft · score 96 (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 Knights Of Columbus Bldg's energy grade?
Knights Of Columbus Bldg scores 100 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 Knights Of Columbus Bldg use?
Its 2025 site energy-use intensity was 13.9 kBtu/ft² (23.8 kBtu/ft² source) across 33,708 sq ft, including 297,493 kWh of electricity and 16,546 therms of natural gas.
What are Knights Of Columbus Bldg's carbon emissions?
Knights Of Columbus Bldg reported 93 tCO₂e of greenhouse-gas emissions (0.5 kgCO₂e/ft²) for 2025.
Where is Knights Of Columbus Bldg?
Knights Of Columbus Bldg is at 722 E UNION ST, in Seattle, Washington 98122. Its coordinates are 47.61314, -122.32262 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is Knights Of Columbus Bldg and when was it built?
Knights Of Columbus Bldg has 33,708 sq ft of gross floor area, as reported in its 2025 disclosure. The disclosure lists 1912 as its year built. It is classed as multifamily housing.
Is Knights Of Columbus Bldg 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, “Knights Of Columbus Bldg, Seattle, Washington — 2025 benchmarking disclosure”, https://buildingcensus.com/buildings/seattle/knights-of-columbus-bldg-01672e2e (data as of October 2, 2026).