5231 California
Office in California, CA · 5231 California Avenue, Irvine · 92617
At a glance
5231 California is a 53,840-square-foot office building at 5231 California Avenue, Irvine in Irvine, California, built in 2000. In its 2024 California benchmarking disclosure it reported an ENERGY STAR score of 50 out of 100 (grade D), a site energy-use intensity of 52.6 kBtu/ft² and 179 tCO₂e of greenhouse-gas emissions. That score is higher than 16% 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 | 50 (band D) |
| Site EUI | 52.6 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 179 tCO₂e |
| GHG intensity | 3.3 kgCO₂e/ft² |
| Electricity | 589,537 kWh |
| Natural gas | 8,481 therms |
| Gross floor area | 53,840 sq ft |
| Source record | california:5881018:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 50 | -5 | 52.6 kBtu/ft² | 179 tCO₂e |
| 2023 | 55 | -9 | 51.0 kBtu/ft² | 179 tCO₂e |
| 2022 | 64 | -10 | 46.6 kBtu/ft² | 152 tCO₂e |
| 2021 | 74 | -13 | 38.7 kBtu/ft² | 119 tCO₂e |
| 2020 | 87 | +10 | 47.8 kBtu/ft² | 154 tCO₂e |
| 2019 | 77 | -1 | 57.0 kBtu/ft² | 202 tCO₂e |
| 2018 | 78 | 57.9 kBtu/ft² | 201 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
- 5231 California Avenue, Irvine
- City
- California
- State
- California
- ZIP
- 92617
- Coordinates
- 33.63717, -117.85291
Within ~1 km
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See also: most efficient in California · biggest emitters
How does 5231 California compare with other office buildings in California?
The latest disclosures cover 6,214 office buildings in California, out of 40,029 buildings citywide. 5231 California's ENERGY STAR score of 50 compares with an average of 75 across the 4,912 that report a score; it scores higher than 16% of them and lower than 84%. Its site EUI of 52.6 kBtu/ft² is roughly in line with 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 3.3 kgCO₂e/ft² is roughly in line with the group average of 3.6 kgCO₂e/ft².
At 53,840 sq ft, it is about 65% below the average floor area of 151,937 sq ft for those buildings. It was built in 2000, 15 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 5231 California's energy performance changed over time?
BuildingCensus holds 7 California disclosures for 5231 California, covering report years 2018–2024. Its ENERGY STAR score went from 78 in 2018 to 50 in 2024 (-28 points); its best year on file was 2020, at 87. Site EUI moved from 57.9 kBtu/ft² (2018) to 52.6 kBtu/ft² (2024), a 9% decrease. Reported emissions went from 201 tCO₂e to 179 tCO₂e over the same span (down 11%).
What does an ENERGY STAR score of 50 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 50 means the building performs better than about 50% of its national peers. BuildingCensus bands the score into report-card grades; 50 falls in band D — lowest band (1–54). It sits 25 points below 75, the threshold for ENERGY STAR certification. 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. 5231 California's 52.6 kBtu/ft² across 53,840 sq ft works out to about 2.8 billion Btu (830 MWh-equivalent) in 2024. The disclosure also reports 589,537 kWh of electricity and 8,481 therms of natural gas for the year.
Which law requires 5231 California to report its energy use?
5231 California 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:5881018:2024). 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
- 3901 Via Oro Avenue (Rexford Ab 802)· 53,817 sq ft · score 66 (C)
- Vccf Nonprofit Center, Llc· 53,815 sq ft · score 91 (A)
- 15535 Sand Canyon Bldg A· 53,803 sq ft · score 88 (A)
- 7535 Irvine Center Drive· 53,794 sq ft · score 95 (A)
- 111 Theory· 53,794 sq ft · score 84 (B)
- 9520 Towne Centre· 53,794 sq ft
- 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 5231 California's energy grade?
5231 California scores 50 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 5231 California use?
Its 2024 site energy-use intensity was 52.6 kBtu/ft² across 53,840 sq ft, including 589,537 kWh of electricity and 8,481 therms of natural gas.
What are 5231 California's carbon emissions?
5231 California reported 179 tCO₂e of greenhouse-gas emissions (3.3 kgCO₂e/ft²) for 2024.
Where is 5231 California?
5231 California is at 5231 California Avenue, Irvine, in Irvine, California 92617. Its coordinates are 33.63717, -117.85291 (latitude, longitude), as published in the Building Energy Benchmarking Program (statewide) file.
How big is 5231 California and when was it built?
5231 California has 53,840 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 2000 as its year built. It is classed as office.
Is 5231 California 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, “5231 California, Irvine, California — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/california/5231-california-c0332020 (data as of July 9, 2026).