Ontario Business Center - 820
Non-Refrigerated Warehouse in California, CA · 820 South Rockefeller Avenue, Ontario · 91761
At a glance
Ontario Business Center - 820 is a 63,157-square-foot non-refrigerated warehouse at 820 South Rockefeller Avenue, Ontario in Ontario, California, built in 1988. In its 2024 California benchmarking disclosure it reported an ENERGY STAR score of 84 out of 100 (grade B), a site energy-use intensity of 6.4 kBtu/ft² and 27 tCO₂e of greenhouse-gas emissions. That score is higher than 56% 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 | 84 (band B) |
| Site EUI | 6.4 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 27 tCO₂e |
| GHG intensity | 0.4 kgCO₂e/ft² |
| Electricity | 117,847 kWh |
| Gross floor area | 63,157 sq ft |
| Source record | california:4524003:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 84 | +4 | 6.4 kBtu/ft² | 27 tCO₂e |
| 2023 | 80 | 7.2 kBtu/ft² | 32 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
- 820 South Rockefeller Avenue, Ontario
- City
- California
- State
- California
- ZIP
- 91761
- Coordinates
- 34.05639, -117.55521
Within ~1 km
Nearby benchmarked buildings
- 4450 E. Lowell St.score 12
Distribution Center · 317,070 sq ft
Distribution Center · 317,000 sq ft
- Dpi - 601 S Rockefellerscore 40
Refrigerated Warehouse · 252,800 sq ft
- 1251 South Rockefeller Avescore 93
Non-Refrigerated Warehouse · 242,000 sq ft
Manufacturing/Industrial Plant · 237,302 sq ft
- Airport Cscore 95
Distribution Center · 230,484 sq ft
See also: most efficient in California · biggest emitters
How does Ontario Business Center - 820 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. Ontario Business Center - 820's ENERGY STAR score of 84 compares with an average of 68 across the 2,227 that report a score; it scores higher than 56% of them and lower than 42%. Its site EUI of 6.4 kBtu/ft² is about 71% below the average of 21.7 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 70% below the group average of 1.4 kgCO₂e/ft².
At 63,157 sq ft, it is about 64% below the average floor area of 173,929 sq ft for those buildings. Its 1988 construction date is close to 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 Ontario Business Center - 820's energy performance changed over time?
BuildingCensus holds 2 California disclosures for Ontario Business Center - 820, covering report years 2023–2024. Its ENERGY STAR score went from 80 in 2023 to 84 in 2024 (+4 points). Site EUI moved from 7.2 kBtu/ft² (2023) to 6.4 kBtu/ft² (2024), a 11% decrease. Reported emissions went from 32 tCO₂e to 27 tCO₂e over the same span (down 17%).
What does an ENERGY STAR score of 84 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 84 means the building performs better than about 84% of its national peers. BuildingCensus bands the score into report-card grades; 84 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. Ontario Business Center - 820's 6.4 kBtu/ft² across 63,157 sq ft works out to about 0.4 billion Btu (118 MWh-equivalent) in 2024. The disclosure also reports 117,847 kWh of electricity for the year.
Which law requires Ontario Business Center - 820 to report its energy use?
Ontario Business Center - 820 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:4524003:2024). 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
- 27525 Newhall Ranch Road· 63,156 sq ft · score 1 (D)
- Brackett Field Hangars G, I, K (Ab 802)· 63,142 sq ft
- Br42097-42259 Rio Nedo· 63,126 sq ft · score 60 (C)
- 1920 Violet Street· 63,104 sq ft · score 48 (D)
- 950 Whipple Road· 63,099 sq ft · score 21 (D)
- 6590 Darin Way (Cypress Land)· 63,016 sq ft · score 77 (B)
- 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 Ontario Business Center - 820's energy grade?
Ontario Business Center - 820 scores 84 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 Ontario Business Center - 820 use?
Its 2024 site energy-use intensity was 6.4 kBtu/ft² across 63,157 sq ft, including 117,847 kWh of electricity.
What are Ontario Business Center - 820's carbon emissions?
Ontario Business Center - 820 reported 27 tCO₂e of greenhouse-gas emissions (0.4 kgCO₂e/ft²) for 2024.
Where is Ontario Business Center - 820?
Ontario Business Center - 820 is at 820 South Rockefeller Avenue, Ontario, in Ontario, California 91761. Its coordinates are 34.05639, -117.55521 (latitude, longitude), as published in the Building Energy Benchmarking Program (statewide) file.
How big is Ontario Business Center - 820 and when was it built?
Ontario Business Center - 820 has 63,157 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1988 as its year built. It is classed as non-refrigerated warehouse.
Is Ontario Business Center - 820 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, “Ontario Business Center - 820, Ontario, California — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/california/ontario-business-center-820-7648bc2a (data as of July 9, 2026).