Costco #00686 Montclair
Supermarket/Grocery Store in California, CA · 9404 Central Avenue, Montclair · 91763
At a glance
Costco #00686 Montclair is a 149,705-square-foot supermarket/grocery store at 9404 Central Avenue, Montclair in Montclair, California, built in 2001. In its 2024 California benchmarking disclosure it reported an ENERGY STAR score of 82 out of 100 (grade B), a site energy-use intensity of 121.2 kBtu/ft² and 957 tCO₂e of greenhouse-gas emissions. That score is higher than 62% of the 866 scored supermarket/grocery store buildings in California.
AB 802 (Public Resources Code §25402.10) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 82 (band B) |
| Site EUI | 121.2 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 957 tCO₂e |
| GHG intensity | 6.4 kgCO₂e/ft² |
| Electricity | 3,256,511 kWh |
| Natural gas | 41,265 therms |
| Gross floor area | 149,705 sq ft |
| Source record | california:6342456:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 82 | ±0 | 121.2 kBtu/ft² | 957 tCO₂e |
| 2023 | 82 | -14 | 118.1 kBtu/ft² | 1,004 tCO₂e |
| 2022 | 96 | +7 | 96.8 kBtu/ft² | 932 tCO₂e |
| 2021 | 89 | +10 | 117.3 kBtu/ft² | 1,037 tCO₂e |
| 2019 | 79 | -1 | 138.1 kBtu/ft² | 1,319 tCO₂e |
| 2018 | 80 | 133.7 kBtu/ft² | 1,401 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.
Own or manage this building? Claim it to correct the record and get compliance alerts.
Location
- Address
- 9404 Central Avenue, Montclair
- City
- California
- State
- California
- ZIP
- 91763
- Coordinates
- 34.08439, -117.69035
Within ~1 km
Nearby benchmarked buildings
- Montclair Place Campusscore —
Enclosed Mall · 1,234,657 sq ft
- Paseos At Montclairscore 95
Multifamily Housing · 386,578 sq ft
Multifamily Housing · 385,682 sq ft
- Montclair, Ca-1614score 97
Retail Store · 197,422 sq ft
Retail Store · 191,135 sq ft
Retail Store · 174,675 sq ft
See also: most efficient in California · biggest emitters
How does Costco #00686 Montclair compare with other supermarket/grocery store buildings in California?
The latest disclosures cover 975 supermarket/grocery store buildings in California, out of 40,029 buildings citywide. Costco #00686 Montclair's ENERGY STAR score of 82 compares with an average of 74 across the 866 that report a score; it scores higher than 62% of them and lower than 34%. Its site EUI of 121.2 kBtu/ft² is about 26% below the average of 164.4 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 6.4 kgCO₂e/ft² is about 39% below the group average of 10.4 kgCO₂e/ft².
At 149,705 sq ft, it is about twice the average floor area of 76,560 sq ft for those buildings. It was built in 2001, 5 years later than the group's average year built (1996). Across all 24 jurisdictions BuildingCensus covers, the 1,646 supermarket/grocery store buildings average an ENERGY STAR score of 71 and a site EUI of 176.1 kBtu/ft².
How has Costco #00686 Montclair's energy performance changed over time?
BuildingCensus holds 6 California disclosures for Costco #00686 Montclair, covering report years 2018, 2019, 2021, 2022, 2023, 2024. Its ENERGY STAR score went from 80 in 2018 to 82 in 2024 (+2 points); its best year on file was 2022, at 96. Site EUI moved from 133.7 kBtu/ft² (2018) to 121.2 kBtu/ft² (2024), a 9% decrease. Reported emissions went from 1,401 tCO₂e to 957 tCO₂e over the same span (down 32%).
What does an ENERGY STAR score of 82 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 82 means the building performs better than about 82% of its national peers. BuildingCensus bands the score into report-card grades; 82 falls in band B — above median (70–84). Scores of 75 or higher meet the threshold for ENERGY STAR certification; certification itself is a separate, verified application that the disclosure does not record. In California, 65% 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. Costco #00686 Montclair's 121.2 kBtu/ft² across 149,705 sq ft works out to about 18.1 billion Btu (5,318 MWh-equivalent) in 2024. The disclosure also reports 3,256,511 kWh of electricity and 41,265 therms of natural gas for the year.
Which law requires Costco #00686 Montclair to report its energy use?
Costco #00686 Montclair 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:6342456:2024). 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 supermarket/grocery store buildings in California
- Costco #00638 La Quinta· 149,646 sq ft · score 79 (B)
- Costco #00778 Fremont· 149,196 sq ft · score 90 (A)
- Costco #00657 N Fresno· 148,963 sq ft · score 43 (D)
- F2170 - Torrance Crossroads - North· 148,758 sq ft · EUI 152.5 kBtu/ft²
- Costco #00762 Lancaster· 148,689 sq ft · score 78 (B)
- Costco #00658 Tracy· 148,663 sq ft · score 89 (A)
- Supermarket/Grocery Store buildings in California· 975 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 Costco #00686 Montclair's energy grade?
Costco #00686 Montclair scores 82 out of 100 on ENERGY STAR — band B, above median (70–84) — in its 2024 California disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does Costco #00686 Montclair use?
Its 2024 site energy-use intensity was 121.2 kBtu/ft² across 149,705 sq ft, including 3,256,511 kWh of electricity and 41,265 therms of natural gas.
What are Costco #00686 Montclair's carbon emissions?
Costco #00686 Montclair reported 957 tCO₂e of greenhouse-gas emissions (6.4 kgCO₂e/ft²) for 2024.
Where is Costco #00686 Montclair?
Costco #00686 Montclair is at 9404 Central Avenue, Montclair, in Montclair, California 91763. Its coordinates are 34.08439, -117.69035 (latitude, longitude), as published in the Building Energy Benchmarking Program (statewide) file.
How big is Costco #00686 Montclair and when was it built?
Costco #00686 Montclair has 149,705 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 2001 as its year built. It is classed as supermarket/grocery store.
Is Costco #00686 Montclair 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, “Costco #00686 Montclair, Montclair, California — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/california/costco-00686-montclair-1274d7a6 (data as of July 9, 2026).