Port Of Seattle -Marine Maintenance Shop
Vehicle Repair Services in Seattle, WA · 25 S HORTON ST · 98134
At a glance
Port Of Seattle -Marine Maintenance Shop is a 32,192-square-foot vehicle repair services building at 25 S HORTON ST in Seattle, Washington, built in 1959. In its 2025 Seattle benchmarking disclosure it reported a site energy-use intensity of 83.5 kBtu/ft² and 154 tCO₂e of greenhouse-gas emissions.
Seattle Energy Benchmarking Ordinance (SMC 22.920) · reporting year 2025
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 83.5 kBtu/ft² |
| Source EUI | 139.3 kBtu/ft² |
| GHG emissions | 154 tCO₂e |
| GHG intensity | 3.0 kgCO₂e/ft² |
| Electricity | 446,086 kWh |
| Natural gas | 27,909 therms |
| Gross floor area | 32,192 sq ft |
| Source record | seattle:20394:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | — | 83.5 kBtu/ft² | 154 tCO₂e | |
| 2024 | — | 89.8 kBtu/ft² | 168 tCO₂e | |
| 2023 | — | 82.6 kBtu/ft² | 149 tCO₂e | |
| 2022 | — | 109.7 kBtu/ft² | 224 tCO₂e | |
| 2021 | — | 137.9 kBtu/ft² | 306 tCO₂e | |
| 2020 | — | 88.5 kBtu/ft² | 171 tCO₂e | |
| 2019 | — | 85.2 kBtu/ft² | 163 tCO₂e | |
| 2018 | — | 87.0 kBtu/ft² | 164 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
- 25 S HORTON ST
- City
- Seattle
- State
- Washington
- ZIP
- 98134
- Coordinates
- 47.57411, -122.33715
Within ~1 km
Nearby benchmarked buildings
- Starbucks (Sodo) Center - Campusscore 97
Office · 1,750,319 sq ft
- Portside Distribution Centerscore 96
Distribution Center · 411,584 sq ft
Office · 338,063 sq ft
- Sodo Urban Worksscore —
Mixed Use Property · 188,681 sq ft
Refrigerated Warehouse · 174,227 sq ft
Non-Refrigerated Warehouse · 115,668 sq ft
See also: most efficient in Seattle · biggest emitters
How does Port Of Seattle -Marine Maintenance Shop compare with other vehicle repair services buildings in Seattle?
The latest disclosures cover 16 vehicle repair services buildings in Seattle, out of 3,871 buildings citywide. Its site EUI of 83.5 kBtu/ft² is roughly in line with the average of 78.3 kBtu/ft². Its emissions intensity of 3.0 kgCO₂e/ft² is about 15% above the group average of 2.6 kgCO₂e/ft².
At 32,192 sq ft, it is about 25% below the average floor area of 43,130 sq ft for those buildings. Its 1959 construction date is close to the group's average year built (1961).
How has Port Of Seattle -Marine Maintenance Shop's energy performance changed over time?
BuildingCensus holds 8 Seattle disclosures for Port Of Seattle -Marine Maintenance Shop, covering report years 2018–2025. Site EUI moved from 87.0 kBtu/ft² (2018) to 83.5 kBtu/ft² (2025), a 4% decrease. Reported emissions went from 164 tCO₂e to 154 tCO₂e over the same span (down 6%).
What does a site EUI of 83.5 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. Port Of Seattle -Marine Maintenance Shop's 83.5 kBtu/ft² across 32,192 sq ft works out to about 2.7 billion Btu (788 MWh-equivalent) in 2025. Its source EUI of 139.3 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 446,086 kWh of electricity and 27,909 therms of natural gas for the year.
Which law requires Port Of Seattle -Marine Maintenance Shop to report its energy use?
Port Of Seattle -Marine Maintenance Shop 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:20394:2025). 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 vehicle repair services buildings in Seattle
- Orcas Building - King County· 27,680 sq ft · EUI 77.6 kBtu/ft²
- Hlf Vehicle Maintenance (A)· 26,994 sq ft · EUI 164.8 kBtu/ft²
- MERCEDES BENZ OF SEATTLE 2015· 24,520 sq ft · EUI 54.3 kBtu/ft²
- First Student· 23,260 sq ft · EUI 102.6 kBtu/ft²
- Aker's Volks-Porsche Repair· 22,320 sq ft · EUI 7.0 kBtu/ft²
- King County Metro Transit Power Distribution· 21,947 sq ft · EUI 49.4 kBtu/ft²
- 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 Port Of Seattle -Marine Maintenance Shop's energy grade?
Port Of Seattle -Marine Maintenance Shop did not report an ENERGY STAR score in its 2025 disclosure, but its site energy-use intensity was 83.5 kBtu/ft².
How much energy does Port Of Seattle -Marine Maintenance Shop use?
Its 2025 site energy-use intensity was 83.5 kBtu/ft² (139.3 kBtu/ft² source) across 32,192 sq ft, including 446,086 kWh of electricity and 27,909 therms of natural gas.
What are Port Of Seattle -Marine Maintenance Shop's carbon emissions?
Port Of Seattle -Marine Maintenance Shop reported 154 tCO₂e of greenhouse-gas emissions (3.0 kgCO₂e/ft²) for 2025.
Where is Port Of Seattle -Marine Maintenance Shop?
Port Of Seattle -Marine Maintenance Shop is at 25 S HORTON ST, in Seattle, Washington 98134. Its coordinates are 47.57411, -122.33715 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is Port Of Seattle -Marine Maintenance Shop and when was it built?
Port Of Seattle -Marine Maintenance Shop has 32,192 sq ft of gross floor area, as reported in its 2025 disclosure. The disclosure lists 1959 as its year built. It is classed as vehicle repair services.
Is Port Of Seattle -Marine Maintenance Shop 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, “Port Of Seattle -Marine Maintenance Shop, Seattle, Washington — 2025 benchmarking disclosure”, https://buildingcensus.com/buildings/seattle/port-of-seattle-marine-maintenance-shop-8a8ebf65 (data as of October 2, 2026).