Skyline East Marginal Warehouse
Manufacturing/Industrial Plant in Seattle, WA · 4401 EAST MARGINAL WAY S · 98134
At a glance
Skyline East Marginal Warehouse is a 326,751-square-foot manufacturing/industrial plant at 4401 EAST MARGINAL WAY S in Seattle, Washington, built in 1999. In its 2025 Seattle benchmarking disclosure it reported a site energy-use intensity of 78.4 kBtu/ft² and 439 tCO₂e of greenhouse-gas emissions.
Seattle Energy Benchmarking Ordinance (SMC 22.920) · reporting year 2025
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 78.4 kBtu/ft² |
| Source EUI | 186.2 kBtu/ft² |
| GHG emissions | 439 tCO₂e |
| GHG intensity | 1.4 kgCO₂e/ft² |
| Electricity | 5,663,582 kWh |
| Natural gas | 61,771 therms |
| Gross floor area | 326,751 sq ft |
| Source record | seattle:507:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | — | 78.4 kBtu/ft² | 439 tCO₂e | |
| 2024 | — | 65.9 kBtu/ft² | 274 tCO₂e | |
| 2023 | — | 63.3 kBtu/ft² | 232 tCO₂e | |
| 2022 | — | 78.8 kBtu/ft² | 448 tCO₂e | |
| 2021 | — | 73.6 kBtu/ft² | 381 tCO₂e | |
| 2020 | — | 66.9 kBtu/ft² | 278 tCO₂e | |
| 2019 | — | 76.2 kBtu/ft² | 390 tCO₂e | |
| 2018 | — | 85.5 kBtu/ft² | 474 tCO₂e | |
| 2017 | 11 | 68.7 kBtu/ft² | 171 tCO₂e | |
| 2016 | — | 70.3 kBtu/ft² | 253 tCO₂e | |
| 2015 | — | — | 119 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
- 4401 EAST MARGINAL WAY S
- City
- Seattle
- State
- Washington
- ZIP
- 98134
- Coordinates
- 47.56419, -122.34262
Within ~1 km
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- 4727 Buildingscore 95
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- Restaurant Depotscore 1
Wholesale Club/Supercenter · 63,225 sq ft
See also: most efficient in Seattle · biggest emitters
How does Skyline East Marginal Warehouse compare with other manufacturing/industrial plant buildings in Seattle?
The latest disclosures cover 14 manufacturing/industrial plant buildings in Seattle, out of 3,871 buildings citywide. Its site EUI of 78.4 kBtu/ft² is about 78% above the average of 44.0 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 23% above the group average of 1.1 kgCO₂e/ft².
At 326,751 sq ft, it is about 389% above the average floor area of 66,769 sq ft for those buildings. It was built in 1999, 23 years later than the group's average year built (1976). Across all 24 jurisdictions BuildingCensus covers, the 2,372 manufacturing/industrial plant buildings average an ENERGY STAR score of 67 and a site EUI of 126.3 kBtu/ft².
How has Skyline East Marginal Warehouse's energy performance changed over time?
BuildingCensus holds 11 Seattle disclosures for Skyline East Marginal Warehouse, covering report years 2015–2025. Site EUI moved from 70.3 kBtu/ft² (2016) to 78.4 kBtu/ft² (2025), an 12% increase. Reported emissions went from 119 tCO₂e to 439 tCO₂e over the same span (up 271%).
What does a site EUI of 78.4 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. Skyline East Marginal Warehouse's 78.4 kBtu/ft² across 326,751 sq ft works out to about 25.6 billion Btu (7,508 MWh-equivalent) in 2025. Its source EUI of 186.2 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 5,663,582 kWh of electricity and 61,771 therms of natural gas for the year.
Which law requires Skyline East Marginal Warehouse to report its energy use?
Skyline East Marginal Warehouse 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:507:2025). 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 manufacturing/industrial plant buildings in Seattle
- SALMON BAY WATERWAY· 132,754 sq ft · EUI 17.8 kBtu/ft²
- Norfolk Industrial (KG)· 123,000 sq ft · EUI 55.2 kBtu/ft²
- Seadrunar Properties· 46,340 sq ft · EUI 46.7 kBtu/ft²
- Sk Food Group/Lsg Sky Chef· 43,387 sq ft · EUI 21.5 kBtu/ft²
- Auto-Chlor System· 43,380 sq ft · EUI 50.3 kBtu/ft²
- Whse· 36,000 sq ft
- 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 Skyline East Marginal Warehouse's energy grade?
Skyline East Marginal Warehouse did not report an ENERGY STAR score in its 2025 disclosure, but its site energy-use intensity was 78.4 kBtu/ft².
How much energy does Skyline East Marginal Warehouse use?
Its 2025 site energy-use intensity was 78.4 kBtu/ft² (186.2 kBtu/ft² source) across 326,751 sq ft, including 5,663,582 kWh of electricity and 61,771 therms of natural gas.
What are Skyline East Marginal Warehouse's carbon emissions?
Skyline East Marginal Warehouse reported 439 tCO₂e of greenhouse-gas emissions (1.4 kgCO₂e/ft²) for 2025.
Where is Skyline East Marginal Warehouse?
Skyline East Marginal Warehouse is at 4401 EAST MARGINAL WAY S, in Seattle, Washington 98134. Its coordinates are 47.56419, -122.34262 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is Skyline East Marginal Warehouse and when was it built?
Skyline East Marginal Warehouse has 326,751 sq ft of gross floor area, as reported in its 2025 disclosure. The disclosure lists 1999 as its year built. It is classed as manufacturing/industrial plant.
Is Skyline East Marginal Warehouse 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, “Skyline East Marginal Warehouse, Seattle, Washington — 2025 benchmarking disclosure”, https://buildingcensus.com/buildings/seattle/skyline-east-marginal-warehouse-1d95f961 (data as of October 2, 2026).