2030-2050 S Carlos Avenue (Ab 802 Rexford)
Office in California, CA · 2030 South Carlos Avenue, Ontario · 91761
At a glance
2030-2050 S Carlos Avenue (Ab 802 Rexford) is a 51,508-square-foot office building at 2030 South Carlos Avenue, Ontario in Ontario, California, built in 1988. In its 2024 California benchmarking disclosure it reported an ENERGY STAR score of 100 out of 100 (grade A), a site energy-use intensity of 6.0 kBtu/ft² and 20 tCO₂e of greenhouse-gas emissions. That score is higher than 91% of the 4,912 scored office buildings in California.
AB 802 (Public Resources Code §25402.10) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 100 (band A) |
| Site EUI | 6.0 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 20 tCO₂e |
| GHG intensity | 0.4 kgCO₂e/ft² |
| Electricity | 82,721 kWh |
| Natural gas | 303 therms |
| Gross floor area | 51,508 sq ft |
| Source record | california:10173623:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 100 | ±0 | 6.0 kBtu/ft² | 20 tCO₂e |
| 2023 | 100 | +33 | 4.5 kBtu/ft² | 16 tCO₂e |
| 2022 | 67 | ±0 | 10.5 kBtu/ft² | 32 tCO₂e |
| 2021 | 67 | +10 | 10.8 kBtu/ft² | 31 tCO₂e |
| 2020 | 57 | +10 | 11.7 kBtu/ft² | 37 tCO₂e |
| 2019 | 47 | 13.9 kBtu/ft² | 44 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
- 2030 South Carlos Avenue, Ontario
- City
- California
- State
- California
- ZIP
- 91761
- Coordinates
- 34.03671, -117.60708
Within ~1 km
Nearby benchmarked buildings
- Ontario Hospital Campusscore 35
Hospital (General Medical & Surgical) · 744,560 sq ft
Manufacturing/Industrial Plant · 696,106 sq ft
- Ine05201 - Terra Francesco Dc #1score 93
Distribution Center · 414,543 sq ft
- 1651 S. Carlos Avescore 83
Distribution Center · 147,484 sq ft
- Bt42550-1651 S Carlos Avescore 87
Non-Refrigerated Warehouse · 147,484 sq ft
Non-Refrigerated Warehouse · 133,612 sq ft
See also: most efficient in California · biggest emitters
How does 2030-2050 S Carlos Avenue (Ab 802 Rexford) compare with other office buildings in California?
The latest disclosures cover 6,214 office buildings in California, out of 40,029 buildings citywide. 2030-2050 S Carlos Avenue (Ab 802 Rexford)'s ENERGY STAR score of 100 compares with an average of 75 across the 4,912 that report a score; it scores higher than 91% of them. Its site EUI of 6.0 kBtu/ft² is about 89% below the average of 56.4 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 89% below the group average of 3.6 kgCO₂e/ft².
At 51,508 sq ft, it is about 66% below the average floor area of 151,937 sq ft for those buildings. It was built in 1988, 3 years later than the group's average year built (1985). Across all 24 jurisdictions BuildingCensus covers, the 15,264 office buildings average an ENERGY STAR score of 73 and a site EUI of 59.3 kBtu/ft².
How has 2030-2050 S Carlos Avenue (Ab 802 Rexford)'s energy performance changed over time?
BuildingCensus holds 6 California disclosures for 2030-2050 S Carlos Avenue (Ab 802 Rexford), covering report years 2019–2024. Its ENERGY STAR score went from 47 in 2019 to 100 in 2024 (+53 points); its best year on file was 2023, at 100. Site EUI moved from 13.9 kBtu/ft² (2019) to 6.0 kBtu/ft² (2024), a 57% decrease. Reported emissions went from 44 tCO₂e to 20 tCO₂e over the same span (down 54%).
What does an ENERGY STAR score of 100 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: 100 is the top of the scale. BuildingCensus bands the score into report-card grades; 100 falls in band A — high performer (85–100). 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. 2030-2050 S Carlos Avenue (Ab 802 Rexford)'s 6.0 kBtu/ft² across 51,508 sq ft works out to about 0.3 billion Btu (91 MWh-equivalent) in 2024. The disclosure also reports 82,721 kWh of electricity and 303 therms of natural gas for the year.
Which law requires 2030-2050 S Carlos Avenue (Ab 802 Rexford) to report its energy use?
2030-2050 S Carlos Avenue (Ab 802 Rexford) 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:10173623:2024). 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 office buildings in California
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- 15445 Innovation Drive· 51,500 sq ft · score 73 (B)
- 9292 Jeronimo· 51,485 sq ft · score 75 (B)
- Fre 123· 51,484 sq ft · score 100 (A)
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- Office buildings in California· 6,214 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 2030-2050 S Carlos Avenue (Ab 802 Rexford)'s energy grade?
2030-2050 S Carlos Avenue (Ab 802 Rexford) scores 100 out of 100 on ENERGY STAR — band A, high performer (85–100) — in its 2024 California disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does 2030-2050 S Carlos Avenue (Ab 802 Rexford) use?
Its 2024 site energy-use intensity was 6.0 kBtu/ft² across 51,508 sq ft, including 82,721 kWh of electricity and 303 therms of natural gas.
What are 2030-2050 S Carlos Avenue (Ab 802 Rexford)'s carbon emissions?
2030-2050 S Carlos Avenue (Ab 802 Rexford) reported 20 tCO₂e of greenhouse-gas emissions (0.4 kgCO₂e/ft²) for 2024.
Where is 2030-2050 S Carlos Avenue (Ab 802 Rexford)?
2030-2050 S Carlos Avenue (Ab 802 Rexford) is at 2030 South Carlos Avenue, Ontario, in Ontario, California 91761. Its coordinates are 34.03671, -117.60708 (latitude, longitude), as published in the Building Energy Benchmarking Program (statewide) file.
How big is 2030-2050 S Carlos Avenue (Ab 802 Rexford) and when was it built?
2030-2050 S Carlos Avenue (Ab 802 Rexford) has 51,508 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1988 as its year built. It is classed as office.
Is 2030-2050 S Carlos Avenue (Ab 802 Rexford) 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, “2030-2050 S Carlos Avenue (Ab 802 Rexford), Ontario, California — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/california/2030-2050-s-carlos-avenue-ab-802-rexford-e19ca9f8 (data as of July 9, 2026).