15975 Alton Parkway
Office in California, CA · 15975 Alton Parkway, Irvine · 92618
At a glance
15975 Alton Parkway is a 86,457-square-foot office building at 15975 Alton Parkway, Irvine in Irvine, California, built in 1990. In its 2022 California benchmarking disclosure it reported an ENERGY STAR score of 89 out of 100 (grade A), a site energy-use intensity of 26.0 kBtu/ft² and 164 tCO₂e of greenhouse-gas emissions. That score is higher than 61% of the 4,912 scored office buildings in California.
AB 802 (Public Resources Code §25402.10) · reporting year 2022
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 89 (band A) |
| Site EUI | 26.0 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 164 tCO₂e |
| GHG intensity | 1.9 kgCO₂e/ft² |
| Electricity | 703,151 kWh |
| Gross floor area | 86,457 sq ft |
| Source record | california:15962333:2022 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2022latest | 89 | -1 | 26.0 kBtu/ft² | 164 tCO₂e |
| 2020 | 90 | +11 | 27.6 kBtu/ft² | 158 tCO₂e |
| 2019 | 79 | +3 | 36.3 kBtu/ft² | 210 tCO₂e |
| 2018 | 76 | 37.7 kBtu/ft² | 221 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
- 15975 Alton Parkway, Irvine
- City
- California
- State
- California
- ZIP
- 92618
- Coordinates
- 33.65846, -117.76395
Within ~1 km
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- Westview Ii Apartment Homes #02score 51
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- 15800 Altonscore —
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- 5 Pasteurscore 38
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See also: most efficient in California · biggest emitters
How does 15975 Alton Parkway compare with other office buildings in California?
The latest disclosures cover 6,214 office buildings in California, out of 40,029 buildings citywide. 15975 Alton Parkway's ENERGY STAR score of 89 compares with an average of 75 across the 4,912 that report a score; it scores higher than 61% of them and lower than 36%. Its site EUI of 26.0 kBtu/ft² is about half of 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 1.9 kgCO₂e/ft² is about half of the group average of 3.6 kgCO₂e/ft².
At 86,457 sq ft, it is about 43% below the average floor area of 151,937 sq ft for those buildings. It was built in 1990, 5 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 15975 Alton Parkway's energy performance changed over time?
BuildingCensus holds 4 California disclosures for 15975 Alton Parkway, covering report years 2018, 2019, 2020, 2022. Its ENERGY STAR score went from 76 in 2018 to 89 in 2022 (+13 points); its best year on file was 2020, at 90. Site EUI moved from 37.7 kBtu/ft² (2018) to 26.0 kBtu/ft² (2022), a 31% decrease. Reported emissions went from 221 tCO₂e to 164 tCO₂e over the same span (down 26%).
What does an ENERGY STAR score of 89 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 89 means the building performs better than about 89% of its national peers. BuildingCensus bands the score into report-card grades; 89 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. 15975 Alton Parkway's 26.0 kBtu/ft² across 86,457 sq ft works out to about 2.2 billion Btu (659 MWh-equivalent) in 2022. The disclosure also reports 703,151 kWh of electricity for the year.
Which law requires 15975 Alton Parkway to report its energy use?
15975 Alton Parkway 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 2022 disclosure (source record california:15962333:2022). 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
- Irv - Catalina Building· 86,445 sq ft · score 80 (B)
- Irv - Monterey· 86,445 sq ft · score 90 (A)
- Irv - Redwoods· 86,445 sq ft · score 86 (A)
- Irv - Sierra Building· 86,445 sq ft · score 83 (B)
- 201 North Sunrise Ave· 86,423 sq ft · score 100 (A)
- 16752 Armstrong Ave (Rexford Ab 802)· 86,415 sq ft · score 82 (B)
- 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 15975 Alton Parkway's energy grade?
15975 Alton Parkway scores 89 out of 100 on ENERGY STAR — band A, high performer (85–100) — in its 2022 California disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does 15975 Alton Parkway use?
Its 2022 site energy-use intensity was 26.0 kBtu/ft² across 86,457 sq ft, including 703,151 kWh of electricity.
What are 15975 Alton Parkway's carbon emissions?
15975 Alton Parkway reported 164 tCO₂e of greenhouse-gas emissions (1.9 kgCO₂e/ft²) for 2022.
Where is 15975 Alton Parkway?
15975 Alton Parkway is at 15975 Alton Parkway, Irvine, in Irvine, California 92618. Its coordinates are 33.65846, -117.76395 (latitude, longitude), as published in the Building Energy Benchmarking Program (statewide) file.
How big is 15975 Alton Parkway and when was it built?
15975 Alton Parkway has 86,457 sq ft of gross floor area, as reported in its 2022 disclosure. The disclosure lists 1990 as its year built. It is classed as office.
Is 15975 Alton Parkway covered by AB 802 (Public Resources Code §25402.10)?
Yes — it appears in the 2022 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, “15975 Alton Parkway, Irvine, California — 2022 benchmarking disclosure”, https://buildingcensus.com/buildings/california/15975-alton-parkway-3bad8687 (data as of July 9, 2026).