101 Portola (Pr252)
Multifamily Housing in California, CA · 100 Fountainhead, Irvine · 92618
At a glance
101 Portola (Pr252) is a 318,786-square-foot multifamily housing building at 100 Fountainhead, Irvine in Irvine, California, built in 2016. 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 16.0 kBtu/ft² and 285 tCO₂e of greenhouse-gas emissions. That score is higher than 76% 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 | 100 (band A) |
| Site EUI | 16.0 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 285 tCO₂e |
| GHG intensity | 0.9 kgCO₂e/ft² |
| Electricity | 867,907 kWh |
| Natural gas | 21,732 therms |
| Gross floor area | 318,786 sq ft |
| Source record | california:7236915:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 100 | ±0 | 16.0 kBtu/ft² | 285 tCO₂e |
| 2023 | 100 | ±0 | 15.8 kBtu/ft² | 320 tCO₂e |
| 2022 | 100 | ±0 | 16.0 kBtu/ft² | 316 tCO₂e |
| 2021 | 100 | ±0 | 16.8 kBtu/ft² | 301 tCO₂e |
| 2020 | 100 | ±0 | 16.8 kBtu/ft² | 296 tCO₂e |
| 2019 | 100 | 0.6 kBtu/ft² | 11 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
- 100 Fountainhead, Irvine
- City
- California
- State
- California
- ZIP
- 92618
- Coordinates
- 33.68461, -117.71468
Within ~1 km
Nearby benchmarked buildings
No other benchmarked buildings within ~1 km.
See also: most efficient in California · biggest emitters
How does 101 Portola (Pr252) 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. 101 Portola (Pr252)'s ENERGY STAR score of 100 compares with an average of 82 across the 9,612 that report a score; it scores higher than 76% of them. Its site EUI of 16.0 kBtu/ft² is about half of the average of 34.4 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 0.9 kgCO₂e/ft² is about 58% below the group average of 2.1 kgCO₂e/ft².
At 318,786 sq ft, it is about twice the average floor area of 150,919 sq ft for those buildings. It was built in 2016, 28 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 101 Portola (Pr252)'s energy performance changed over time?
BuildingCensus holds 6 California disclosures for 101 Portola (Pr252), covering report years 2019–2024. Its ENERGY STAR score was 100 in both 2019 and 2024. Site EUI moved from 0.6 kBtu/ft² (2019) to 16.0 kBtu/ft² (2024), an 2567% increase. Reported emissions went from 11 tCO₂e to 285 tCO₂e over the same span (up 2465%).
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. 101 Portola (Pr252)'s 16.0 kBtu/ft² across 318,786 sq ft works out to about 5.1 billion Btu (1,495 MWh-equivalent) in 2024. The disclosure also reports 867,907 kWh of electricity and 21,732 therms of natural gas for the year.
Which law requires 101 Portola (Pr252) to report its energy use?
101 Portola (Pr252) 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:7236915:2024). 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
- Siena Terrace - 29177· 318,635 sq ft · score 83 (B)
- Larkspur Woods· 318,616 sq ft · score 99 (A)
- Villa Hemet· 318,423 sq ft · score 100 (A)
- El Centro Town Center Villa· 318,095 sq ft
- Paradise Gardens - Reliant· 318,000 sq ft · score 72 (B)
- Cambridge Park - Essex (Cm79)· 317,958 sq ft · score 100 (A)
- 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 101 Portola (Pr252)'s energy grade?
101 Portola (Pr252) 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 101 Portola (Pr252) use?
Its 2024 site energy-use intensity was 16.0 kBtu/ft² across 318,786 sq ft, including 867,907 kWh of electricity and 21,732 therms of natural gas.
What are 101 Portola (Pr252)'s carbon emissions?
101 Portola (Pr252) reported 285 tCO₂e of greenhouse-gas emissions (0.9 kgCO₂e/ft²) for 2024.
Where is 101 Portola (Pr252)?
101 Portola (Pr252) is at 100 Fountainhead, Irvine, in Irvine, California 92618. Its coordinates are 33.68461, -117.71468 (latitude, longitude), as published in the Building Energy Benchmarking Program (statewide) file.
How big is 101 Portola (Pr252) and when was it built?
101 Portola (Pr252) has 318,786 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 2016 as its year built. It is classed as multifamily housing.
Is 101 Portola (Pr252) 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).
Working with California building benchmarking records? Pro adds alerts, change history and CSV export ($49/mo); Enterprise adds full national files, the API and an MCP server for AI tools.
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, “101 Portola (Pr252), Irvine, California — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/california/101-portola-pr252-9137551d (data as of July 9, 2026).