Villa Siena #30
Multifamily Housing in California, CA · 30 Palatine, Irvine · 92612
At a glance
Villa Siena #30 is a 218,264-square-foot multifamily housing building at 30 Palatine, Irvine in Irvine, California, built in 1998. In its 2024 California benchmarking disclosure it reported an ENERGY STAR score of 43 out of 100 (grade D), a site energy-use intensity of 36.2 kBtu/ft² and 469 tCO₂e of greenhouse-gas emissions. That score is higher than 8% of the 9,612 scored multifamily housing buildings in California.
AB 802 (Public Resources Code §25402.10) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 43 (band D) |
| Site EUI | 36.2 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 469 tCO₂e |
| GHG intensity | 2.1 kgCO₂e/ft² |
| Electricity | 990,250 kWh |
| Natural gas | 46,154 therms |
| Gross floor area | 218,264 sq ft |
| Source record | california:6793720:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 43 | +6 | 36.2 kBtu/ft² | 469 tCO₂e |
| 2023 | 37 | -4 | 39.0 kBtu/ft² | 517 tCO₂e |
| 2022 | 41 | +3 | 41.3 kBtu/ft² | 523 tCO₂e |
| 2021 | 38 | +2 | 40.3 kBtu/ft² | 488 tCO₂e |
| 2020 | 36 | -2 | 41.5 kBtu/ft² | 519 tCO₂e |
| 2019 | 38 | 38.8 kBtu/ft² | 515 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
- 30 Palatine, Irvine
- City
- California
- State
- California
- ZIP
- 92612
- Coordinates
- 33.66839, -117.84739
Within ~1 km
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How does Villa Siena #30 compare with other multifamily housing buildings in California?
The latest disclosures cover 10,630 multifamily housing buildings in California, out of 40,029 buildings citywide. Villa Siena #30's ENERGY STAR score of 43 compares with an average of 82 across the 9,612 that report a score; it scores higher than 8% of them and lower than 92%. Its site EUI of 36.2 kBtu/ft² is roughly in line with the average of 34.4 kBtu/ft². Its emissions intensity of 2.1 kgCO₂e/ft² is roughly in line with the group average of 2.1 kgCO₂e/ft².
At 218,264 sq ft, it is about 45% above the average floor area of 150,919 sq ft for those buildings. It was built in 1998, 10 years later than the group's average year built (1988). Across all 24 jurisdictions BuildingCensus covers, the 59,945 multifamily housing buildings average an ENERGY STAR score of 70 and a site EUI of 59.0 kBtu/ft².
How has Villa Siena #30's energy performance changed over time?
BuildingCensus holds 6 California disclosures for Villa Siena #30, covering report years 2019–2024. Its ENERGY STAR score went from 38 in 2019 to 43 in 2024 (+5 points). Site EUI moved from 38.8 kBtu/ft² (2019) to 36.2 kBtu/ft² (2024), a 7% decrease. Reported emissions went from 515 tCO₂e to 469 tCO₂e over the same span (down 9%).
What does an ENERGY STAR score of 43 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 43 means the building performs better than about 43% of its national peers. BuildingCensus bands the score into report-card grades; 43 falls in band D — lowest band (1–54). It sits 32 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. Villa Siena #30's 36.2 kBtu/ft² across 218,264 sq ft works out to about 7.9 billion Btu (2,316 MWh-equivalent) in 2024. The disclosure also reports 990,250 kWh of electricity and 46,154 therms of natural gas for the year.
Which law requires Villa Siena #30 to report its energy use?
Villa Siena #30 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:6793720:2024). 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 multifamily housing buildings in California
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- Almaden Lake Apts· 218,070 sq ft · score 93 (A)
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- Multifamily Housing buildings in California· 10,630 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 Villa Siena #30's energy grade?
Villa Siena #30 scores 43 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 Villa Siena #30 use?
Its 2024 site energy-use intensity was 36.2 kBtu/ft² across 218,264 sq ft, including 990,250 kWh of electricity and 46,154 therms of natural gas.
What are Villa Siena #30's carbon emissions?
Villa Siena #30 reported 469 tCO₂e of greenhouse-gas emissions (2.1 kgCO₂e/ft²) for 2024.
Where is Villa Siena #30?
Villa Siena #30 is at 30 Palatine, Irvine, in Irvine, California 92612. Its coordinates are 33.66839, -117.84739 (latitude, longitude), as published in the Building Energy Benchmarking Program (statewide) file.
How big is Villa Siena #30 and when was it built?
Villa Siena #30 has 218,264 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1998 as its year built. It is classed as multifamily housing.
Is Villa Siena #30 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, “Villa Siena #30, Irvine, California — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/california/villa-siena-30-955b3bba (data as of July 9, 2026).