Westlake North Business Park Ii
Office in California, CA · 30721 Russell Ranch Road, Westlake Village · 91362
At a glance
Westlake North Business Park Ii is a 65,517-square-foot office building at 30721 Russell Ranch Road, Westlake Village in Westlake Village, California, built in 2001. In its 2024 California benchmarking disclosure it reported an ENERGY STAR score of 76 out of 100 (grade B), a site energy-use intensity of 72.9 kBtu/ft² and 299 tCO₂e of greenhouse-gas emissions. That score is higher than 36% 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 | 76 (band B) |
| Site EUI | 72.9 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 299 tCO₂e |
| GHG intensity | 4.6 kgCO₂e/ft² |
| Electricity | 987,265 kWh |
| Natural gas | 14,157 therms |
| Gross floor area | 65,517 sq ft |
| Source record | california:1201610:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 76 | -6 | 72.9 kBtu/ft² | 299 tCO₂e |
| 2023 | 82 | +5 | 68.9 kBtu/ft² | 289 tCO₂e |
| 2022 | 77 | -3 | 63.7 kBtu/ft² | 261 tCO₂e |
| 2021 | 80 | +2 | 64.6 kBtu/ft² | 245 tCO₂e |
| 2020 | 78 | -7 | 70.2 kBtu/ft² | 278 tCO₂e |
| 2019 | 85 | +16 | 84.3 kBtu/ft² | 352 tCO₂e |
| 2018 | 69 | 107.5 kBtu/ft² | 437 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
- 30721 Russell Ranch Road, Westlake Village
- City
- California
- State
- California
- ZIP
- 91362
- Coordinates
- 34.14985, -118.79497
Within ~1 km
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See also: most efficient in California · biggest emitters
How does Westlake North Business Park Ii compare with other office buildings in California?
The latest disclosures cover 6,214 office buildings in California, out of 40,029 buildings citywide. Westlake North Business Park Ii's ENERGY STAR score of 76 compares with an average of 75 across the 4,912 that report a score; it scores higher than 36% of them and lower than 62%. Its site EUI of 72.9 kBtu/ft² is about 29% 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 4.6 kgCO₂e/ft² is about 27% above the group average of 3.6 kgCO₂e/ft².
At 65,517 sq ft, it is about 57% below the average floor area of 151,937 sq ft for those buildings. It was built in 2001, 16 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 Westlake North Business Park Ii's energy performance changed over time?
BuildingCensus holds 7 California disclosures for Westlake North Business Park Ii, covering report years 2018–2024. Its ENERGY STAR score went from 69 in 2018 to 76 in 2024 (+7 points); its best year on file was 2019, at 85. Site EUI moved from 107.5 kBtu/ft² (2018) to 72.9 kBtu/ft² (2024), a 32% decrease. Reported emissions went from 437 tCO₂e to 299 tCO₂e over the same span (down 32%).
What does an ENERGY STAR score of 76 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 76 means the building performs better than about 76% of its national peers. BuildingCensus bands the score into report-card grades; 76 falls in band B — above median (70–84). 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. Westlake North Business Park Ii's 72.9 kBtu/ft² across 65,517 sq ft works out to about 4.8 billion Btu (1,400 MWh-equivalent) in 2024. The disclosure also reports 987,265 kWh of electricity and 14,157 therms of natural gas for the year.
Which law requires Westlake North Business Park Ii to report its energy use?
Westlake North Business Park Ii 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:1201610:2024). 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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Frequently asked questions
What is Westlake North Business Park Ii's energy grade?
Westlake North Business Park Ii scores 76 out of 100 on ENERGY STAR — band B, above median (70–84) — in its 2024 California disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does Westlake North Business Park Ii use?
Its 2024 site energy-use intensity was 72.9 kBtu/ft² across 65,517 sq ft, including 987,265 kWh of electricity and 14,157 therms of natural gas.
What are Westlake North Business Park Ii's carbon emissions?
Westlake North Business Park Ii reported 299 tCO₂e of greenhouse-gas emissions (4.6 kgCO₂e/ft²) for 2024.
Where is Westlake North Business Park Ii?
Westlake North Business Park Ii is at 30721 Russell Ranch Road, Westlake Village, in Westlake Village, California 91362. Its coordinates are 34.14985, -118.79497 (latitude, longitude), as published in the Building Energy Benchmarking Program (statewide) file.
How big is Westlake North Business Park Ii and when was it built?
Westlake North Business Park Ii has 65,517 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 2001 as its year built. It is classed as office.
Is Westlake North Business Park Ii 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, “Westlake North Business Park Ii, Westlake Village, California — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/california/westlake-north-business-park-ii-f6a6d75c (data as of July 9, 2026).