2535 W Hillcrest
Office in California, CA · 2535 West Hillcrest Drive, Thousand Oaks · 91320
At a glance
2535 W Hillcrest is a 71,000-square-foot office building at 2535 West Hillcrest Drive, Thousand Oaks in Thousand Oaks, California, built in 2007. In its 2023 California benchmarking disclosure it reported an ENERGY STAR score of 64 out of 100 (grade C), a site energy-use intensity of 78.1 kBtu/ft² and 341 tCO₂e of greenhouse-gas emissions. That score is higher than 25% of the 4,912 scored office buildings in California.
AB 802 (Public Resources Code §25402.10) · reporting year 2023
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 64 (band C) |
| Site EUI | 78.1 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 341 tCO₂e |
| GHG intensity | 4.8 kgCO₂e/ft² |
| Electricity | 755,903 kWh |
| Natural gas | 29,721 therms |
| Gross floor area | 71,000 sq ft |
| Source record | california:6866201:2023 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2023latest | 64 | +4 | 78.1 kBtu/ft² | 341 tCO₂e |
| 2022 | 60 | -4 | 79.9 kBtu/ft² | 350 tCO₂e |
| 2021 | 64 | -7 | 86.0 kBtu/ft² | 343 tCO₂e |
| 2020 | 71 | -5 | 75.0 kBtu/ft² | 304 tCO₂e |
| 2019 | 76 | -21 | 68.2 kBtu/ft² | 294 tCO₂e |
| 2018 | 97 | 18.2 kBtu/ft² | 92 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
- 2535 West Hillcrest Drive, Thousand Oaks
- City
- California
- State
- California
- ZIP
- 91320
- Coordinates
- 34.18807, -118.93187
Within ~1 km
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- 1011 Rancho Conejo - 13044score —
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See also: most efficient in California · biggest emitters
How does 2535 W Hillcrest compare with other office buildings in California?
The latest disclosures cover 6,214 office buildings in California, out of 40,029 buildings citywide. 2535 W Hillcrest's ENERGY STAR score of 64 compares with an average of 75 across the 4,912 that report a score; it scores higher than 25% of them and lower than 75%. Its site EUI of 78.1 kBtu/ft² is about 38% above the average of 56.4 kBtu/ft² — it uses more energy per square foot than the typical building in that group. Its emissions intensity of 4.8 kgCO₂e/ft² is about 33% above the group average of 3.6 kgCO₂e/ft².
At 71,000 sq ft, it is about half of the average floor area of 151,937 sq ft for those buildings. It was built in 2007, 22 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 2535 W Hillcrest's energy performance changed over time?
BuildingCensus holds 6 California disclosures for 2535 W Hillcrest, covering report years 2018–2023. Its ENERGY STAR score went from 97 in 2018 to 64 in 2023 (-33 points); its best year on file was 2018, at 97. Site EUI moved from 18.2 kBtu/ft² (2018) to 78.1 kBtu/ft² (2023), an 329% increase. Reported emissions went from 92 tCO₂e to 341 tCO₂e over the same span (up 271%).
What does an ENERGY STAR score of 64 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 64 means the building performs better than about 64% of its national peers. BuildingCensus bands the score into report-card grades; 64 falls in band C — below median (55–69). It sits 11 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. 2535 W Hillcrest's 78.1 kBtu/ft² across 71,000 sq ft works out to about 5.5 billion Btu (1,625 MWh-equivalent) in 2023. The disclosure also reports 755,903 kWh of electricity and 29,721 therms of natural gas for the year.
Which law requires 2535 W Hillcrest to report its energy use?
2535 W Hillcrest 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 2023 disclosure (source record california:6866201:2023). 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
- 6200 Greenwich Drive· 70,987 sq ft · score 87 (A)
- 6200 Greenwich Drive· 70,987 sq ft · score 85 (A)
- Tustin Financial Plaza - Center· 70,965 sq ft · score 86 (A)
- Good Irvine Office Llc· 70,962 sq ft · score 100 (A)
- 18801 Ventura Blvd· 70,922 sq ft · score 77 (B)
- 820 Stillwater Road· 70,916 sq ft · EUI 153.7 kBtu/ft²
- 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 2535 W Hillcrest's energy grade?
2535 W Hillcrest scores 64 out of 100 on ENERGY STAR — band C, below median (55–69) — in its 2023 California disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does 2535 W Hillcrest use?
Its 2023 site energy-use intensity was 78.1 kBtu/ft² across 71,000 sq ft, including 755,903 kWh of electricity and 29,721 therms of natural gas.
What are 2535 W Hillcrest's carbon emissions?
2535 W Hillcrest reported 341 tCO₂e of greenhouse-gas emissions (4.8 kgCO₂e/ft²) for 2023.
Where is 2535 W Hillcrest?
2535 W Hillcrest is at 2535 West Hillcrest Drive, Thousand Oaks, in Thousand Oaks, California 91320. Its coordinates are 34.18807, -118.93187 (latitude, longitude), as published in the Building Energy Benchmarking Program (statewide) file.
How big is 2535 W Hillcrest and when was it built?
2535 W Hillcrest has 71,000 sq ft of gross floor area, as reported in its 2023 disclosure. The disclosure lists 2007 as its year built. It is classed as office.
Is 2535 W Hillcrest covered by AB 802 (Public Resources Code §25402.10)?
Yes — it appears in the 2023 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, “2535 W Hillcrest, Thousand Oaks, California — 2023 benchmarking disclosure”, https://buildingcensus.com/buildings/california/2535-w-hillcrest-55c7f620 (data as of July 9, 2026).