Westhills Plaza
Office in California, CA · 20700 Ventura Boulevard, Los Angeles · 91364
At a glance
Westhills Plaza is a 86,788-square-foot office building at 20700 Ventura Boulevard, Los Angeles in Los Angeles, California, built in 1987. In its 2024 California benchmarking disclosure it reported an ENERGY STAR score of 63 out of 100 (grade C), a site energy-use intensity of 57.8 kBtu/ft² and 327 tCO₂e of greenhouse-gas emissions. That score is higher than 24% 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 | 63 (band C) |
| Site EUI | 57.8 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 327 tCO₂e |
| GHG intensity | 3.8 kgCO₂e/ft² |
| Electricity | 1,203,561 kWh |
| Gross floor area | 86,788 sq ft |
| Source record | california:6342221:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 63 | +9 | 57.8 kBtu/ft² | 327 tCO₂e |
| 2018 | 54 | 61.4 kBtu/ft² | 369 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
- 20700 Ventura Boulevard, Los Angeles
- City
- California
- State
- California
- ZIP
- 91364
- Coordinates
- 34.16636, -118.58388
Within ~1 km
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See also: most efficient in California · biggest emitters
How does Westhills Plaza compare with other office buildings in California?
The latest disclosures cover 6,214 office buildings in California, out of 40,029 buildings citywide. Westhills Plaza's ENERGY STAR score of 63 compares with an average of 75 across the 4,912 that report a score; it scores higher than 24% of them and lower than 75%. Its site EUI of 57.8 kBtu/ft² is roughly in line with the average of 56.4 kBtu/ft². Its emissions intensity of 3.8 kgCO₂e/ft² is roughly in line with the group average of 3.6 kgCO₂e/ft².
At 86,788 sq ft, it is about 43% below the average floor area of 151,937 sq ft for those buildings. Its 1987 construction date is close to 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 Westhills Plaza's energy performance changed over time?
BuildingCensus holds 2 California disclosures for Westhills Plaza, covering report years 2018, 2024. Its ENERGY STAR score went from 54 in 2018 to 63 in 2024 (+9 points). Site EUI moved from 61.4 kBtu/ft² (2018) to 57.8 kBtu/ft² (2024), a 6% decrease. Reported emissions went from 369 tCO₂e to 327 tCO₂e over the same span (down 11%).
What does an ENERGY STAR score of 63 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 63 means the building performs better than about 63% of its national peers. BuildingCensus bands the score into report-card grades; 63 falls in band C — below median (55–69). It sits 12 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. Westhills Plaza's 57.8 kBtu/ft² across 86,788 sq ft works out to about 5 billion Btu (1,470 MWh-equivalent) in 2024. The disclosure also reports 1,203,561 kWh of electricity for the year.
Which law requires Westhills Plaza to report its energy use?
Westhills Plaza 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:6342221:2024). 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.
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- 5300 Stevens Creek· 86,734 sq ft · score 82 (B)
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- 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 Westhills Plaza's energy grade?
Westhills Plaza scores 63 out of 100 on ENERGY STAR — band C, below median (55–69) — in its 2024 California disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does Westhills Plaza use?
Its 2024 site energy-use intensity was 57.8 kBtu/ft² across 86,788 sq ft, including 1,203,561 kWh of electricity.
What are Westhills Plaza's carbon emissions?
Westhills Plaza reported 327 tCO₂e of greenhouse-gas emissions (3.8 kgCO₂e/ft²) for 2024.
Where is Westhills Plaza?
Westhills Plaza is at 20700 Ventura Boulevard, Los Angeles, in Los Angeles, California 91364. Its coordinates are 34.16636, -118.58388 (latitude, longitude), as published in the Building Energy Benchmarking Program (statewide) file.
How big is Westhills Plaza and when was it built?
Westhills Plaza has 86,788 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1987 as its year built. It is classed as office.
Is Westhills Plaza 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, “Westhills Plaza, Los Angeles, California — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/california/westhills-plaza-40c1364a (data as of July 9, 2026).