At a glance
Port Of Seattle- Mic (Maritime Industrial Center) is a 48,560-square-foot other building at 4600 27TH AVE W in Seattle, Washington, built in 1926. In its 2025 Seattle benchmarking disclosure it reported a site energy-use intensity of 49.4 kBtu/ft² and 17 tCO₂e of greenhouse-gas emissions.
Seattle Energy Benchmarking Ordinance (SMC 22.920) · reporting year 2025
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 49.4 kBtu/ft² |
| Source EUI | 138.4 kBtu/ft² |
| GHG emissions | 17 tCO₂e |
| GHG intensity | 0.3 kgCO₂e/ft² |
| Electricity | 866,420 kWh |
| Gross floor area | 48,560 sq ft |
| Source record | seattle:20216:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | — | 49.4 kBtu/ft² | 17 tCO₂e | |
| 2024 | — | 45.8 kBtu/ft² | 16 tCO₂e | |
| 2023 | — | 49.1 kBtu/ft² | 17 tCO₂e | |
| 2022 | — | 54.5 kBtu/ft² | 19 tCO₂e | |
| 2021 | — | 51.2 kBtu/ft² | 18 tCO₂e | |
| 2020 | — | 44.4 kBtu/ft² | 15 tCO₂e | |
| 2019 | — | 44.6 kBtu/ft² | 16 tCO₂e | |
| 2018 | — | 50.1 kBtu/ft² | 17 tCO₂e | |
| 2017 | — | — | — | |
| 2016 | — | — | — | |
| 2015 | — | — | — |
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
- 4600 27TH AVE W
- City
- Seattle
- State
- Washington
- ZIP
- 98199
- Coordinates
- 47.66304, -122.39169
Within ~1 km
Nearby benchmarked buildings
- Ballard On The Park Apartmentsscore 100
Multifamily Housing · 447,755 sq ft
- Amli Mark 24 Aptsscore 100
Multifamily Housing · 418,285 sq ft
- Commons At Ballardscore 96
Mixed Use Property · 178,578 sq ft
- Ballard Yardsscore 100
Multifamily Housing · 165,146 sq ft
- Salmon Bayscore —
Office · 163,921 sq ft
- Lock Vista Aptsscore 99
Multifamily Housing · 159,820 sq ft
See also: most efficient in Seattle · biggest emitters
How does Port Of Seattle- Mic (Maritime Industrial Center) compare with other other buildings in Seattle?
The latest disclosures cover 45 other buildings in Seattle, out of 3,871 buildings citywide. Its site EUI of 49.4 kBtu/ft² is about 17% below the average of 59.4 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 0.3 kgCO₂e/ft² is about 75% below the group average of 1.1 kgCO₂e/ft².
At 48,560 sq ft, it is about 13% below the average floor area of 55,708 sq ft for those buildings. It was built in 1926, 26 years earlier than the group's average year built (1952). Across all 24 jurisdictions BuildingCensus covers, the 1,327 other buildings average an ENERGY STAR score of 60 and a site EUI of 63.3 kBtu/ft².
How has Port Of Seattle- Mic (Maritime Industrial Center)'s energy performance changed over time?
BuildingCensus holds 11 Seattle disclosures for Port Of Seattle- Mic (Maritime Industrial Center), covering report years 2015–2025. Site EUI moved from 50.1 kBtu/ft² (2018) to 49.4 kBtu/ft² (2025), a 1% decrease. Reported emissions went from 17 tCO₂e to 17 tCO₂e over the same span (down 5%).
What does a site EUI of 49.4 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- Mic (Maritime Industrial Center)'s 49.4 kBtu/ft² across 48,560 sq ft works out to about 2.4 billion Btu (703 MWh-equivalent) in 2025. Its source EUI of 138.4 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 866,420 kWh of electricity for the year.
Which law requires Port Of Seattle- Mic (Maritime Industrial Center) to report its energy use?
Port Of Seattle- Mic (Maritime Industrial Center) 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:20216:2025). 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 other buildings in Seattle
- Olympic Health Club· 45,750 sq ft
- F & O Inc· 44,775 sq ft · EUI 15.9 kBtu/ft²
- Centurylink: Parkway Co· 41,022 sq ft · EUI 68.0 kBtu/ft²
- Georgetown Steam Plant· 39,212 sq ft · EUI 4.3 kBtu/ft²
- Coliseum Building· 36,504 sq ft · EUI 79.0 kBtu/ft²
- Old Pacific Industrial Supply· 36,400 sq ft · EUI 35.5 kBtu/ft²
- Other buildings in Seattle· 45 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 Port Of Seattle- Mic (Maritime Industrial Center)'s energy grade?
Port Of Seattle- Mic (Maritime Industrial Center) did not report an ENERGY STAR score in its 2025 disclosure, but its site energy-use intensity was 49.4 kBtu/ft².
How much energy does Port Of Seattle- Mic (Maritime Industrial Center) use?
Its 2025 site energy-use intensity was 49.4 kBtu/ft² (138.4 kBtu/ft² source) across 48,560 sq ft, including 866,420 kWh of electricity.
What are Port Of Seattle- Mic (Maritime Industrial Center)'s carbon emissions?
Port Of Seattle- Mic (Maritime Industrial Center) reported 17 tCO₂e of greenhouse-gas emissions (0.3 kgCO₂e/ft²) for 2025.
Where is Port Of Seattle- Mic (Maritime Industrial Center)?
Port Of Seattle- Mic (Maritime Industrial Center) is at 4600 27TH AVE W, in Seattle, Washington 98199. Its coordinates are 47.66304, -122.39169 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is Port Of Seattle- Mic (Maritime Industrial Center) and when was it built?
Port Of Seattle- Mic (Maritime Industrial Center) has 48,560 sq ft of gross floor area, as reported in its 2025 disclosure. The disclosure lists 1926 as its year built. It is classed as other.
Is Port Of Seattle- Mic (Maritime Industrial Center) 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- Mic (Maritime Industrial Center), Seattle, Washington — 2025 benchmarking disclosure”, https://buildingcensus.com/buildings/seattle/port-of-seattle-mic-maritime-industrial-center-ad816274 (data as of October 2, 2026).