Magnolia Self Storage
Self-Storage Facility in Seattle, WA · 1900 15TH AVE W · 98119
At a glance
Magnolia Self Storage is a 94,470-square-foot self-storage facility at 1900 15TH AVE W in Seattle, Washington, built in 1956. In its 2025 Seattle benchmarking disclosure it reported a site energy-use intensity of 11.1 kBtu/ft² and 36 tCO₂e of greenhouse-gas emissions.
Seattle Energy Benchmarking Ordinance (SMC 22.920) · reporting year 2025
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 11.1 kBtu/ft² |
| Source EUI | 18.0 kBtu/ft² |
| GHG emissions | 36 tCO₂e |
| GHG intensity | 0.4 kgCO₂e/ft² |
| Electricity | 100,552 kWh |
| Natural gas | 7,047 therms |
| Gross floor area | 94,470 sq ft |
| Source record | seattle:536:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | — | 11.1 kBtu/ft² | 36 tCO₂e | |
| 2024 | — | 10.8 kBtu/ft² | 37 tCO₂e | |
| 2023 | — | 9.5 kBtu/ft² | 31 tCO₂e | |
| 2022 | — | 13.1 kBtu/ft² | 48 tCO₂e | |
| 2021 | — | 11.0 kBtu/ft² | 39 tCO₂e | |
| 2020 | — | 11.2 kBtu/ft² | 37 tCO₂e | |
| 2019 | — | 12.4 kBtu/ft² | 42 tCO₂e | |
| 2018 | — | 11.9 kBtu/ft² | 39 tCO₂e | |
| 2017 | — | 13.3 kBtu/ft² | 45 tCO₂e | |
| 2016 | — | 10.6 kBtu/ft² | 33 tCO₂e | |
| 2015 | — | 9.8 kBtu/ft² | 29 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
- 1900 15TH AVE W
- City
- Seattle
- State
- Washington
- ZIP
- 98119
- Coordinates
- 47.63634, -122.37540
Within ~1 km
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See also: most efficient in Seattle · biggest emitters
How does Magnolia Self Storage compare with other self-storage facility buildings in Seattle?
The latest disclosures cover 48 self-storage facility buildings in Seattle, out of 3,871 buildings citywide. Its site EUI of 11.1 kBtu/ft² is about 29% below the average of 15.6 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 0.4 kgCO₂e/ft² is about 27% above the group average of 0.3 kgCO₂e/ft².
At 94,470 sq ft, it is roughly in line with the average floor area of 88,206 sq ft for those buildings. It was built in 1956, 20 years earlier than the group's average year built (1976). Across all 24 jurisdictions BuildingCensus covers, the 3,050 self-storage facility buildings average an ENERGY STAR score of 75 and a site EUI of 9.4 kBtu/ft².
How has Magnolia Self Storage's energy performance changed over time?
BuildingCensus holds 11 Seattle disclosures for Magnolia Self Storage, covering report years 2015–2025. Site EUI moved from 9.8 kBtu/ft² (2015) to 11.1 kBtu/ft² (2025), an 13% increase. Reported emissions went from 29 tCO₂e to 36 tCO₂e over the same span (up 22%).
What does a site EUI of 11.1 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. Magnolia Self Storage's 11.1 kBtu/ft² across 94,470 sq ft works out to about 1 billion Btu (307 MWh-equivalent) in 2025. Its source EUI of 18.0 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 100,552 kWh of electricity and 7,047 therms of natural gas for the year.
Which law requires Magnolia Self Storage to report its energy use?
Magnolia Self Storage 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:536:2025). 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 self-storage facility buildings in Seattle
- Extra Space Self Storage· 94,400 sq ft · EUI 11.8 kBtu/ft²
- Extra Space Self Storage· 93,815 sq ft · EUI 7.4 kBtu/ft²
- Seattle Vault Self Storage· 93,660 sq ft · EUI 4.3 kBtu/ft²
- Public Storage (Store 8458)· 80,360 sq ft · EUI 18.0 kBtu/ft²
- Public Storage (Store 27020)· 75,397 sq ft · EUI 6.5 kBtu/ft²
- Greenwood Self Service Storage· 71,874 sq ft · EUI 19.1 kBtu/ft²
- Self-Storage Facility buildings in Seattle· 48 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 Magnolia Self Storage's energy grade?
Magnolia Self Storage did not report an ENERGY STAR score in its 2025 disclosure, but its site energy-use intensity was 11.1 kBtu/ft².
How much energy does Magnolia Self Storage use?
Its 2025 site energy-use intensity was 11.1 kBtu/ft² (18.0 kBtu/ft² source) across 94,470 sq ft, including 100,552 kWh of electricity and 7,047 therms of natural gas.
What are Magnolia Self Storage's carbon emissions?
Magnolia Self Storage reported 36 tCO₂e of greenhouse-gas emissions (0.4 kgCO₂e/ft²) for 2025.
Where is Magnolia Self Storage?
Magnolia Self Storage is at 1900 15TH AVE W, in Seattle, Washington 98119. Its coordinates are 47.63634, -122.37540 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is Magnolia Self Storage and when was it built?
Magnolia Self Storage has 94,470 sq ft of gross floor area, as reported in its 2025 disclosure. The disclosure lists 1956 as its year built. It is classed as self-storage facility.
Is Magnolia Self Storage 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, “Magnolia Self Storage, Seattle, Washington — 2025 benchmarking disclosure”, https://buildingcensus.com/buildings/seattle/magnolia-self-storage-5acb93f2 (data as of October 2, 2026).