Sodo Urban Works
Mixed Use Property in Seattle, WA · 4143 1ST AVE S · 98134
At a glance
Sodo Urban Works is a 188,681-square-foot mixed use property building at 4143 1ST AVE S in Seattle, Washington, built in 1946. In its 2025 Seattle benchmarking disclosure it reported a site energy-use intensity of 153.0 kBtu/ft² and 1,126 tCO₂e of greenhouse-gas emissions.
Seattle Energy Benchmarking Ordinance (SMC 22.920) · reporting year 2025
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 153.0 kBtu/ft² |
| Source EUI | 212.9 kBtu/ft² |
| GHG emissions | 1,126 tCO₂e |
| GHG intensity | 6.6 kgCO₂e/ft² |
| Electricity | 1,491,343 kWh |
| Natural gas | 209,562 therms |
| Gross floor area | 188,681 sq ft |
| Source record | seattle:811:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | — | 153.0 kBtu/ft² | 1,126 tCO₂e | |
| 2024 | 48 | -26 | 81.0 kBtu/ft² | 625 tCO₂e |
| 2023 | 74 | -6 | 52.4 kBtu/ft² | 445 tCO₂e |
| 2022 | 80 | +1 | 51.6 kBtu/ft² | 466 tCO₂e |
| 2021 | 79 | +47 | 57.3 kBtu/ft² | 549 tCO₂e |
| 2020 | 32 | +1 | 81.2 kBtu/ft² | 556 tCO₂e |
| 2019 | 31 | -4 | 82.8 kBtu/ft² | 562 tCO₂e |
| 2018 | 35 | -1 | 75.1 kBtu/ft² | 493 tCO₂e |
| 2017 | 36 | -21 | 19.8 kBtu/ft² | 21 tCO₂e |
| 2016 | 57 | -22 | 19.4 kBtu/ft² | 20 tCO₂e |
| 2015 | 79 | 12.9 kBtu/ft² | 13 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
- 4143 1ST AVE S
- City
- Seattle
- State
- Washington
- ZIP
- 98134
- Coordinates
- 47.56693, -122.33571
Within ~1 km
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See also: most efficient in Seattle · biggest emitters
How does Sodo Urban Works compare with other mixed use property buildings in Seattle?
The latest disclosures cover 157 mixed use property buildings in Seattle, out of 3,871 buildings citywide. Its site EUI of 153.0 kBtu/ft² is about 123% above the average of 68.7 kBtu/ft² — it uses more energy per square foot than the typical building in that group. Its emissions intensity of 6.6 kgCO₂e/ft² is about 373% above the group average of 1.4 kgCO₂e/ft².
At 188,681 sq ft, it is about 14% above the average floor area of 165,352 sq ft for those buildings. It was built in 1946, 22 years earlier than the group's average year built (1968). Across all 24 jurisdictions BuildingCensus covers, the 1,212 mixed use property buildings average an ENERGY STAR score of 69 and a site EUI of 79.8 kBtu/ft².
How has Sodo Urban Works's energy performance changed over time?
BuildingCensus holds 11 Seattle disclosures for Sodo Urban Works, covering report years 2015–2025. Its ENERGY STAR score went from 79 in 2015 to 48 in 2024 (-31 points); its best year on file was 2022, at 80. Site EUI moved from 12.9 kBtu/ft² (2015) to 153.0 kBtu/ft² (2025), an 1086% increase. Reported emissions went from 13 tCO₂e to 1,126 tCO₂e over the same span (up 8368%).
What does a site EUI of 153.0 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. Sodo Urban Works's 153.0 kBtu/ft² across 188,681 sq ft works out to about 28.9 billion Btu (8,460 MWh-equivalent) in 2025. Its source EUI of 212.9 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 1,491,343 kWh of electricity and 209,562 therms of natural gas for the year.
Which law requires Sodo Urban Works to report its energy use?
Sodo Urban Works 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:811:2025). 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 mixed use property buildings in Seattle
- Commons At Ballard· 178,578 sq ft · score 96 (A)
- Capco Plaza (Altamira + Qfc Etc.)· 177,417 sq ft · score 93 (A)
- 500 Fairview Research Center Ii· 167,201 sq ft · EUI 128.6 kBtu/ft²
- CITY WATCH APTS· 163,699 sq ft · score 85 (A)
- Seattle Biomedical Building· 159,700 sq ft · EUI 95.9 kBtu/ft²
- 12th Avenue Arts· 158,967 sq ft
- Mixed Use Property buildings in Seattle· 157 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 Sodo Urban Works's energy grade?
Sodo Urban Works did not report an ENERGY STAR score in its 2025 disclosure, but its site energy-use intensity was 153.0 kBtu/ft².
How much energy does Sodo Urban Works use?
Its 2025 site energy-use intensity was 153.0 kBtu/ft² (212.9 kBtu/ft² source) across 188,681 sq ft, including 1,491,343 kWh of electricity and 209,562 therms of natural gas.
What are Sodo Urban Works's carbon emissions?
Sodo Urban Works reported 1,126 tCO₂e of greenhouse-gas emissions (6.6 kgCO₂e/ft²) for 2025.
Where is Sodo Urban Works?
Sodo Urban Works is at 4143 1ST AVE S, in Seattle, Washington 98134. Its coordinates are 47.56693, -122.33571 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is Sodo Urban Works and when was it built?
Sodo Urban Works has 188,681 sq ft of gross floor area, as reported in its 2025 disclosure. The disclosure lists 1946 as its year built. It is classed as mixed use property.
Is Sodo Urban Works 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, “Sodo Urban Works, Seattle, Washington — 2025 benchmarking disclosure”, https://buildingcensus.com/buildings/seattle/sodo-urban-works-9473a6d2 (data as of October 2, 2026).