9230 Mason Ave (Rexford Ebewe)
Non-Refrigerated Warehouse in California, CA · 9230 Mason Avenue, Los Angeles · 91311
At a glance
9230 Mason Ave (Rexford Ebewe) is a 54,000-square-foot non-refrigerated warehouse at 9230 Mason Avenue, Los Angeles in Los Angeles, California, built in 1965. In its 2024 California benchmarking disclosure it reported an ENERGY STAR score of 1 out of 100 (grade D) and 134 tCO₂e of greenhouse-gas emissions. That score is higher than 0% of the 2,227 scored non-refrigerated warehouse buildings in California.
AB 802 (Public Resources Code §25402.10) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 1 (band D) |
| Site EUI | — |
| Source EUI | — |
| GHG emissions | 134 tCO₂e |
| GHG intensity | 2.5 kgCO₂e/ft² |
| Electricity | 592,483 kWh |
| Gross floor area | 54,000 sq ft |
| Source record | california:6877746:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 1 | ±0 | — | 134 tCO₂e |
| 2023 | 1 | -9 | — | 122 tCO₂e |
| 2022 | 10 | +2 | 17.6 kBtu/ft² | 68 tCO₂e |
| 2021 | 8 | +6 | 18.8 kBtu/ft² | 64 tCO₂e |
| 2020 | 2 | +1 | 28.9 kBtu/ft² | 109 tCO₂e |
| 2019 | 1 | ±0 | 34.6 kBtu/ft² | 132 tCO₂e |
| 2018 | 1 | 47.9 kBtu/ft² | 182 tCO₂e |
Compliance context
AB 802 (Public Resources Code §25402.10)
AB 802 requires every California commercial building over 50,000 sq ft to report energy use to the CEC annually; the CEC publicly discloses the results statewide.
Ownership
No owning organisation shown. Names of private individuals in the disclosure are not published here.
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Location
- Address
- 9230 Mason Avenue, Los Angeles
- City
- California
- State
- California
- ZIP
- 91311
- Coordinates
- 34.23786, -118.57754
Within ~1 km
Nearby benchmarked buildings
- 20525 Nordhoff Stscore 100
Non-Refrigerated Warehouse · 737,606 sq ft
- 20525 Nordhoff Streetscore 99
Non-Refrigerated Warehouse · 584,000 sq ft
Distribution Center · 319,348 sq ft
- 19-Ay1 Chatsworth Courthousescore 84
Courthouse · 302,436 sq ft
- 24 Apartmentsscore 96
Multifamily Housing · 247,043 sq ft
- 20730 Prairie Streetscore 81
Distribution Center · 221,842 sq ft
See also: most efficient in California · biggest emitters
How does 9230 Mason Ave (Rexford Ebewe) compare with other non-refrigerated warehouse buildings in California?
The latest disclosures cover 2,867 non-refrigerated warehouse buildings in California, out of 40,029 buildings citywide. 9230 Mason Ave (Rexford Ebewe)'s ENERGY STAR score of 1 compares with an average of 68 across the 2,227 that report a score; it scores higher than 0% of them and lower than 94%. Its emissions intensity of 2.5 kgCO₂e/ft² is about 77% above the group average of 1.4 kgCO₂e/ft².
At 54,000 sq ft, it is about 69% below the average floor area of 173,929 sq ft for those buildings. It was built in 1965, 23 years earlier than the group's average year built (1988). 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 9230 Mason Ave (Rexford Ebewe)'s energy performance changed over time?
BuildingCensus holds 7 California disclosures for 9230 Mason Ave (Rexford Ebewe), covering report years 2018–2024. Its ENERGY STAR score was 1 in both 2018 and 2024. Site EUI moved from 47.9 kBtu/ft² (2018) to 17.6 kBtu/ft² (2022), a 63% decrease. Reported emissions went from 182 tCO₂e to 134 tCO₂e over the same span (down 26%).
What does an ENERGY STAR score of 1 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: 1 is the bottom of the scale. BuildingCensus bands the score into report-card grades; 1 falls in band D — lowest band (1–54). It sits 74 points below 75, the threshold for ENERGY STAR certification. In California, 65% of scored buildings are at 75 or above.
Which law requires 9230 Mason Ave (Rexford Ebewe) to report its energy use?
9230 Mason Ave (Rexford Ebewe) reports under AB 802 (Public Resources Code §25402.10), the legal basis of California's Building Energy Benchmarking Program (statewide), which publishes each covered building's annual benchmarking results. The record shown here is the report-year 2024 disclosure (source record california:6877746:2024). AB 802 requires every California commercial building over 50,000 sq ft to report energy use to the CEC annually; the CEC publicly discloses the results statewide.
More non-refrigerated warehouse buildings in California
- Cubesmart (Ca) - Store 220· 53,913 sq ft · score 99 (A)
- Br42237-1020 Striker Ave· 53,875 sq ft · score 71 (B)
- Orange County Commerce Center - Bldg. 3· 53,850 sq ft · score 98 (A)
- 60 Van Ness Ave, Fresno, Ca 93721, Usa· 53,847 sq ft · score 21 (D)
- 15541 Mosher· 53,842 sq ft
- Sba00310 - Bayside 22· 53,800 sq ft · score 1 (D)
- Non-Refrigerated Warehouse buildings in California· 2,867 benchmarked
- All California benchmarked buildings· AB 802 (Public Resources Code §25402.10)
- Most efficient large buildings in California
- Least efficient large buildings in California
- Biggest emitters in California
Frequently asked questions
What is 9230 Mason Ave (Rexford Ebewe)'s energy grade?
9230 Mason Ave (Rexford Ebewe) scores 1 out of 100 on ENERGY STAR — band D, lowest band (1–54) — in its 2024 California disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does 9230 Mason Ave (Rexford Ebewe) use?
No energy-use intensity was reported for 2024.
What are 9230 Mason Ave (Rexford Ebewe)'s carbon emissions?
9230 Mason Ave (Rexford Ebewe) reported 134 tCO₂e of greenhouse-gas emissions (2.5 kgCO₂e/ft²) for 2024.
Where is 9230 Mason Ave (Rexford Ebewe)?
9230 Mason Ave (Rexford Ebewe) is at 9230 Mason Avenue, Los Angeles, in Los Angeles, California 91311. Its coordinates are 34.23786, -118.57754 (latitude, longitude), as published in the Building Energy Benchmarking Program (statewide) file.
How big is 9230 Mason Ave (Rexford Ebewe) and when was it built?
9230 Mason Ave (Rexford Ebewe) has 54,000 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1965 as its year built. It is classed as non-refrigerated warehouse.
Is 9230 Mason Ave (Rexford Ebewe) covered by AB 802 (Public Resources Code §25402.10)?
Yes — it appears in the 2024 Building Energy Benchmarking Program (statewide) disclosure, which lists the buildings reporting under AB 802 (Public Resources Code §25402.10).
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About this data
Source: Building Energy Benchmarking Program (statewide) (AB 802 (Public Resources Code §25402.10)), as published July 9, 2026. See the methodology for how records are matched, cleaned and scored.
Cite as: BuildingCensus, “9230 Mason Ave (Rexford Ebewe), Los Angeles, California — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/california/9230-mason-ave-rexford-ebewe-1fc9ff35 (data as of July 9, 2026).