Mallory Safety & Supply LLC
Non-Refrigerated Warehouse in Seattle, WA · 5510 EAST MARGINAL WAY S · 98134
At a glance
Mallory Safety & Supply LLC is a 30,545-square-foot non-refrigerated warehouse at 5510 EAST MARGINAL WAY S in Seattle, Washington, built in 1938. In its 2025 Seattle benchmarking disclosure it reported an ENERGY STAR score of 68 out of 100 (grade C), a site energy-use intensity of 21.4 kBtu/ft² and 20 tCO₂e of greenhouse-gas emissions. That score is higher than 54% of the 117 scored non-refrigerated warehouse buildings in Seattle.
Seattle Energy Benchmarking Ordinance (SMC 22.920) · reporting year 2025
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 68 (band C) |
| Site EUI | 21.4 kBtu/ft² |
| Source EUI | 39.7 kBtu/ft² |
| GHG emissions | 20 tCO₂e |
| GHG intensity | 0.7 kgCO₂e/ft² |
| Electricity | 88,319 kWh |
| Natural gas | 3,518 therms |
| Gross floor area | 30,545 sq ft |
| Source record | seattle:20707:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | 68 | +7 | 21.4 kBtu/ft² | 20 tCO₂e |
| 2024 | 61 | +26 | 24.4 kBtu/ft² | 24 tCO₂e |
| 2023 | 35 | +5 | 47.0 kBtu/ft² | 60 tCO₂e |
| 2022 | 30 | +3 | 50.5 kBtu/ft² | 64 tCO₂e |
| 2021 | 27 | +6 | 51.6 kBtu/ft² | 64 tCO₂e |
| 2020 | 21 | +13 | 52.7 kBtu/ft² | 62 tCO₂e |
| 2019 | 8 | -4 | 83.8 kBtu/ft² | 114 tCO₂e |
| 2018 | 12 | +7 | 70.4 kBtu/ft² | 91 tCO₂e |
| 2017 | 5 | -7 | 94.3 kBtu/ft² | 130 tCO₂e |
| 2016 | 12 | ±0 | 51.6 kBtu/ft² | 61 tCO₂e |
| 2015 | 12 | 49.9 kBtu/ft² | 58 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
- 5510 EAST MARGINAL WAY S
- City
- Seattle
- State
- Washington
- ZIP
- 98134
- Coordinates
- 47.55302, -122.33605
Within ~1 km
Nearby benchmarked buildings
Mixed Use Property · 733,533 sq ft
Refrigerated Warehouse · 442,846 sq ft
- 6100 Buildingscore 94
Office · 238,148 sq ft
- Terreno 1st Ave Southscore 75
Non-Refrigerated Warehouse · 234,144 sq ft
- Seattle Design Centerscore —
Enclosed Mall · 156,188 sq ft
Parking · 127,065 sq ft
See also: most efficient in Seattle · biggest emitters
How does Mallory Safety & Supply LLC compare with other non-refrigerated warehouse buildings in Seattle?
The latest disclosures cover 164 non-refrigerated warehouse buildings in Seattle, out of 3,871 buildings citywide. Mallory Safety & Supply LLC's ENERGY STAR score of 68 compares with an average of 58 across the 117 that report a score; it scores higher than 54% of them and lower than 44%. Its site EUI of 21.4 kBtu/ft² is about 30% below the average of 30.5 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 0.7 kgCO₂e/ft² is about 28% below the group average of 0.9 kgCO₂e/ft².
At 30,545 sq ft, it is about half of the average floor area of 58,727 sq ft for those buildings. It was built in 1938, 22 years earlier than the group's average year built (1960). Across all 24 jurisdictions BuildingCensus covers, the 4,723 non-refrigerated warehouse buildings average an ENERGY STAR score of 66 and a site EUI of 26.0 kBtu/ft².
How has Mallory Safety & Supply LLC's energy performance changed over time?
BuildingCensus holds 11 Seattle disclosures for Mallory Safety & Supply LLC, covering report years 2015–2025. Its ENERGY STAR score went from 12 in 2015 to 68 in 2025 (+56 points). Site EUI moved from 49.9 kBtu/ft² (2015) to 21.4 kBtu/ft² (2025), a 57% decrease. Reported emissions went from 58 tCO₂e to 20 tCO₂e over the same span (down 66%).
What does an ENERGY STAR score of 68 mean?
ENERGY STAR scores run from 1 to 100 and are computed by the EPA's Portfolio Manager as a percentile against similar buildings nationwide, adjusted for climate, size and use: a score of 68 means the building performs better than about 68% of its national peers. BuildingCensus bands the score into report-card grades; 68 falls in band C — below median (55–69). It sits 7 points below 75, the threshold for ENERGY STAR certification. In Seattle, 69% of scored buildings are at 75 or above.
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. Mallory Safety & Supply LLC's 21.4 kBtu/ft² across 30,545 sq ft works out to about 0.7 billion Btu (192 MWh-equivalent) in 2025. Its source EUI of 39.7 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 88,319 kWh of electricity and 3,518 therms of natural gas for the year.
Which law requires Mallory Safety & Supply LLC to report its energy use?
Mallory Safety & Supply LLC 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:20707:2025). 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 non-refrigerated warehouse buildings in Seattle
- Pape' Material Handling· 30,004 sq ft · score 6 (D)
- Mckinstry Sea - 4800 Denver Warehouse· 30,000 sq ft · score 35 (D)
- Nautical Landing· 29,498 sq ft
- Hanson Bros Transfer & Storage· 29,400 sq ft · score 62 (C)
- Lander Station Business Park· 29,394 sq ft · score 21 (D)
- Whse Multi Tenant· 29,380 sq ft · score 58 (C)
- Non-Refrigerated Warehouse buildings in Seattle· 164 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 Mallory Safety & Supply LLC's energy grade?
Mallory Safety & Supply LLC scores 68 out of 100 on ENERGY STAR — band C, below median (55–69) — in its 2025 Seattle disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does Mallory Safety & Supply LLC use?
Its 2025 site energy-use intensity was 21.4 kBtu/ft² (39.7 kBtu/ft² source) across 30,545 sq ft, including 88,319 kWh of electricity and 3,518 therms of natural gas.
What are Mallory Safety & Supply LLC's carbon emissions?
Mallory Safety & Supply LLC reported 20 tCO₂e of greenhouse-gas emissions (0.7 kgCO₂e/ft²) for 2025.
Where is Mallory Safety & Supply LLC?
Mallory Safety & Supply LLC is at 5510 EAST MARGINAL WAY S, in Seattle, Washington 98134. Its coordinates are 47.55302, -122.33605 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is Mallory Safety & Supply LLC and when was it built?
Mallory Safety & Supply LLC has 30,545 sq ft of gross floor area, as reported in its 2025 disclosure. The disclosure lists 1938 as its year built. It is classed as non-refrigerated warehouse.
Is Mallory Safety & Supply LLC 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, “Mallory Safety & Supply LLC, Seattle, Washington — 2025 benchmarking disclosure”, https://buildingcensus.com/buildings/seattle/mallory-safety-supply-llc-57eed7be (data as of October 2, 2026).