William S. Hart High School
K-12 School in California, CA · 24825 N. Newhall Ave., Newhall · 91321
At a glance
William S. Hart High School is a 235,268-square-foot K-12 school at 24825 N. Newhall Ave., Newhall in Newhall, California, built in 1975. In its 2024 California benchmarking disclosure it reported an ENERGY STAR score of 55 out of 100 (grade C), a site energy-use intensity of 65.0 kBtu/ft² and 845 tCO₂e of greenhouse-gas emissions. That score is higher than 19% of the 2,016 scored K-12 school buildings in California.
AB 802 (Public Resources Code §25402.10) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 55 (band C) |
| Site EUI | 65.0 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 845 tCO₂e |
| GHG intensity | 3.6 kgCO₂e/ft² |
| Electricity | 1,926,305 kWh |
| Natural gas | 76,944 therms |
| Gross floor area | 235,268 sq ft |
| Source record | california:34606368:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 55 | +20 | 65.0 kBtu/ft² | 845 tCO₂e |
| 2023 | 35 | -13 | 68.2 kBtu/ft² | 963 tCO₂e |
| 2022 | 48 | 68.3 kBtu/ft² | 889 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
- 24825 N. Newhall Ave., Newhall
- City
- California
- State
- California
- ZIP
- 91321
- Coordinates
- 34.38511, -118.53955
Within ~1 km
Nearby benchmarked buildings
- The Canyons At Santa Clarita (Cn423)score 100
Multifamily Housing · 112,175 sq ft
- Placerita Junior Highscore 88
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- Newhall Terracescore 100
Multifamily Housing · 98,732 sq ft
- 24724 Valley Street - Ab802score 90
Multifamily Housing · 75,251 sq ft
- 23502-23504 Lyons Avescore 41
Office · 62,396 sq ft
- Aldiscore —
Supermarket/Grocery Store · 52,979 sq ft
See also: most efficient in California · biggest emitters
How does William S. Hart High School compare with other K-12 school buildings in California?
The latest disclosures cover 2,128 K-12 school buildings in California, out of 40,029 buildings citywide. William S. Hart High School's ENERGY STAR score of 55 compares with an average of 74 across the 2,016 that report a score; it scores higher than 19% of them and lower than 80%. Its site EUI of 65.0 kBtu/ft² is about 88% above the average of 34.6 kBtu/ft² — it uses more energy per square foot than the typical building in that group. Its emissions intensity of 3.6 kgCO₂e/ft² is about 80% above the group average of 2.0 kgCO₂e/ft².
At 235,268 sq ft, it is about 82% above the average floor area of 129,123 sq ft for those buildings. Its 1975 construction date is close to the group's average year built (1976). Across all 24 jurisdictions BuildingCensus covers, the 6,548 K-12 school buildings average an ENERGY STAR score of 64 and a site EUI of 52.7 kBtu/ft².
How has William S. Hart High School's energy performance changed over time?
BuildingCensus holds 3 California disclosures for William S. Hart High School, covering report years 2022–2024. Its ENERGY STAR score went from 48 in 2022 to 55 in 2024 (+7 points). Site EUI moved from 68.3 kBtu/ft² (2022) to 65.0 kBtu/ft² (2024), a 5% decrease. Reported emissions went from 889 tCO₂e to 845 tCO₂e over the same span (down 5%).
What does an ENERGY STAR score of 55 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 55 means the building performs better than about 55% of its national peers. BuildingCensus bands the score into report-card grades; 55 falls in band C — below median (55–69). It sits 20 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. William S. Hart High School's 65.0 kBtu/ft² across 235,268 sq ft works out to about 15.3 billion Btu (4,482 MWh-equivalent) in 2024. The disclosure also reports 1,926,305 kWh of electricity and 76,944 therms of natural gas for the year.
Which law requires William S. Hart High School to report its energy use?
William S. Hart High School 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:34606368:2024). 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 K-12 school buildings in California
- Everett Alvarez High School· 235,262 sq ft · EUI 26.5 kBtu/ft²
- San Luis Obispo High School· 235,000 sq ft · score 29 (D)
- Montclair High School· 234,409 sq ft · score 25 (D)
- Hanford High School· 234,068 sq ft · score 79 (B)
- Mater Dei Catholic· 233,801 sq ft · score 98 (A)
- Matilda Torres High School· 233,775 sq ft · score 20 (D)
- K-12 School buildings in California· 2,128 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 William S. Hart High School's energy grade?
William S. Hart High School scores 55 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 William S. Hart High School use?
Its 2024 site energy-use intensity was 65.0 kBtu/ft² across 235,268 sq ft, including 1,926,305 kWh of electricity and 76,944 therms of natural gas.
What are William S. Hart High School's carbon emissions?
William S. Hart High School reported 845 tCO₂e of greenhouse-gas emissions (3.6 kgCO₂e/ft²) for 2024.
Where is William S. Hart High School?
William S. Hart High School is at 24825 N. Newhall Ave., Newhall, in Newhall, California 91321. Its coordinates are 34.38511, -118.53955 (latitude, longitude), as published in the Building Energy Benchmarking Program (statewide) file.
How big is William S. Hart High School and when was it built?
William S. Hart High School has 235,268 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1975 as its year built. It is classed as K-12 school.
Is William S. Hart High School 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, “William S. Hart High School, Newhall, California — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/california/william-s-hart-high-school-0364348a (data as of July 9, 2026).