Port Of Seattle - Terminal 5 Campus
Transportation Terminal/Station in Seattle, WA · 3443 WEST MARGINAL WAY SW · 98106
At a glance
Port Of Seattle - Terminal 5 Campus is a 279,916-square-foot transportation terminal/station at 3443 WEST MARGINAL WAY SW in Seattle, Washington, built in 1980. In its 2025 Seattle benchmarking disclosure it reported a site energy-use intensity of 172.9 kBtu/ft² and 380 tCO₂e of greenhouse-gas emissions.
Seattle Energy Benchmarking Ordinance (SMC 22.920) · reporting year 2025
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 172.9 kBtu/ft² |
| Source EUI | 469.0 kBtu/ft² |
| GHG emissions | 380 tCO₂e |
| GHG intensity | 1.4 kgCO₂e/ft² |
| Electricity | 13,031,940 kWh |
| Natural gas | 23,635 therms |
| Gross floor area | 279,916 sq ft |
| Source record | seattle:50452:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | — | 172.9 kBtu/ft² | 380 tCO₂e | |
| 2024 | — | 152.4 kBtu/ft² | 335 tCO₂e | |
| 2023 | — | 40.7 kBtu/ft² | 161 tCO₂e | |
| 2022 | — | 8.9 kBtu/ft² | 117 tCO₂e | |
| 2021 | — | 15.6 kBtu/ft² | 61 tCO₂e | |
| 2020 | — | 59.8 kBtu/ft² | 106 tCO₂e | |
| 2019 | — | 68.7 kBtu/ft² | 118 tCO₂e | |
| 2018 | — | 48.5 kBtu/ft² | 85 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
- 3443 WEST MARGINAL WAY SW
- City
- Seattle
- State
- Washington
- ZIP
- 98106
- Coordinates
- 47.57250, -122.36306
Within ~1 km
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See also: most efficient in Seattle · biggest emitters
How does Port Of Seattle - Terminal 5 Campus compare with other transportation terminal/station buildings in Seattle?
The latest disclosures cover 7 transportation terminal/station buildings in Seattle, out of 3,871 buildings citywide. Its site EUI of 172.9 kBtu/ft² is about 34% above the average of 129.3 kBtu/ft² — it uses more energy per square foot than the typical building in that group. Its emissions intensity of 1.4 kgCO₂e/ft² is about 75% above the group average of 0.8 kgCO₂e/ft².
At 279,916 sq ft, it is about 237% above the average floor area of 83,053 sq ft for those buildings. Its 1980 construction date is close to the group's average year built (1980). Across all 24 jurisdictions BuildingCensus covers, the 103 transportation terminal/station buildings average an ENERGY STAR score of 4 and a site EUI of 105.1 kBtu/ft².
How has Port Of Seattle - Terminal 5 Campus's energy performance changed over time?
BuildingCensus holds 8 Seattle disclosures for Port Of Seattle - Terminal 5 Campus, covering report years 2018–2025. Site EUI moved from 48.5 kBtu/ft² (2018) to 172.9 kBtu/ft² (2025), an 256% increase. Reported emissions went from 85 tCO₂e to 380 tCO₂e over the same span (up 348%).
What does a site EUI of 172.9 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 - Terminal 5 Campus's 172.9 kBtu/ft² across 279,916 sq ft works out to about 48.4 billion Btu (14,184 MWh-equivalent) in 2025. Its source EUI of 469.0 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 13,031,940 kWh of electricity and 23,635 therms of natural gas for the year.
Which law requires Port Of Seattle - Terminal 5 Campus to report its energy use?
Port Of Seattle - Terminal 5 Campus 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:50452:2025). 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 transportation terminal/station buildings in Seattle
- King Street Station-Bnrr/Amtrak· 85,595 sq ft · EUI 35.6 kBtu/ft²
- Port Of Seattle - Terminal 86· 64,812 sq ft · EUI 550.2 kBtu/ft²
- U-District Transit Station· 52,635 sq ft · EUI 77.2 kBtu/ft²
- Port Of Seattle- T-104 W-3 Container Freight Station· 41,280 sq ft · EUI 12.4 kBtu/ft²
- Northgate Transit Station· 28,869 sq ft · EUI 10.7 kBtu/ft²
- South Light Rail Station - Primary· 28,264 sq ft · EUI 46.2 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 - Terminal 5 Campus's energy grade?
Port Of Seattle - Terminal 5 Campus did not report an ENERGY STAR score in its 2025 disclosure, but its site energy-use intensity was 172.9 kBtu/ft².
How much energy does Port Of Seattle - Terminal 5 Campus use?
Its 2025 site energy-use intensity was 172.9 kBtu/ft² (469.0 kBtu/ft² source) across 279,916 sq ft, including 13,031,940 kWh of electricity and 23,635 therms of natural gas.
What are Port Of Seattle - Terminal 5 Campus's carbon emissions?
Port Of Seattle - Terminal 5 Campus reported 380 tCO₂e of greenhouse-gas emissions (1.4 kgCO₂e/ft²) for 2025.
Where is Port Of Seattle - Terminal 5 Campus?
Port Of Seattle - Terminal 5 Campus is at 3443 WEST MARGINAL WAY SW, in Seattle, Washington 98106. Its coordinates are 47.57250, -122.36306 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is Port Of Seattle - Terminal 5 Campus and when was it built?
Port Of Seattle - Terminal 5 Campus has 279,916 sq ft of gross floor area, as reported in its 2025 disclosure. The disclosure lists 1980 as its year built. It is classed as transportation terminal/station.
Is Port Of Seattle - Terminal 5 Campus 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 - Terminal 5 Campus, Seattle, Washington — 2025 benchmarking disclosure”, https://buildingcensus.com/buildings/seattle/port-of-seattle-terminal-5-campus-500e5f39 (data as of October 2, 2026).