Trabuco Hills High
K-12 School in California, CA · 27501 Mustang Run, Mission Viejo · 92691
At a glance
Trabuco Hills High is a 416,446-square-foot K-12 school at 27501 Mustang Run, Mission Viejo in Mission Viejo, California, built in 1985. In its 2024 California benchmarking disclosure it reported an ENERGY STAR score of 85 out of 100 (grade A), a site energy-use intensity of 20.9 kBtu/ft² and 579 tCO₂e of greenhouse-gas emissions. That score is higher than 56% 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 | 85 (band A) |
| Site EUI | 20.9 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 579 tCO₂e |
| GHG intensity | 1.4 kgCO₂e/ft² |
| Electricity | 2,554,882 kWh |
| Gross floor area | 416,446 sq ft |
| Source record | california:27498044:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 85 | +2 | 20.9 kBtu/ft² | 579 tCO₂e |
| 2023 | 83 | ±0 | 19.1 kBtu/ft² | 566 tCO₂e |
| 2022 | 83 | 20.1 kBtu/ft² | 620 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
- 27501 Mustang Run, Mission Viejo
- City
- California
- State
- California
- ZIP
- 92691
- Coordinates
- 33.65351, -117.64999
Within ~1 km
Nearby benchmarked buildings
- Vista Del Lago - 29102score 52
Multifamily Housing · 400,000 sq ft
See also: most efficient in California · biggest emitters
How does Trabuco Hills High 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. Trabuco Hills High's ENERGY STAR score of 85 compares with an average of 74 across the 2,016 that report a score; it scores higher than 56% of them and lower than 42%. Its site EUI of 20.9 kBtu/ft² is about 40% below the average of 34.6 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 1.4 kgCO₂e/ft² is about 31% below the group average of 2.0 kgCO₂e/ft².
At 416,446 sq ft, it is about 223% above the average floor area of 129,123 sq ft for those buildings. It was built in 1985, 9 years later than 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 Trabuco Hills High's energy performance changed over time?
BuildingCensus holds 3 California disclosures for Trabuco Hills High, covering report years 2022–2024. Its ENERGY STAR score went from 83 in 2022 to 85 in 2024 (+2 points). Site EUI moved from 20.1 kBtu/ft² (2022) to 20.9 kBtu/ft² (2024), an 4% increase. Reported emissions went from 620 tCO₂e to 579 tCO₂e over the same span (down 7%).
What does an ENERGY STAR score of 85 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 85 means the building performs better than about 85% of its national peers. BuildingCensus bands the score into report-card grades; 85 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. Trabuco Hills High's 20.9 kBtu/ft² across 416,446 sq ft works out to about 8.7 billion Btu (2,551 MWh-equivalent) in 2024. The disclosure also reports 2,554,882 kWh of electricity for the year.
Which law requires Trabuco Hills High to report its energy use?
Trabuco Hills High 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:27498044:2024). 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
- Justin Garza High School· 415,901 sq ft · score 87 (A)
- Independence High School· 413,195 sq ft · score 66 (C)
- Millikan High· 411,791 sq ft · score 66 (C)
- Wilson High· 403,905 sq ft · score 44 (D)
- Orange County School Of The Arts· 400,000 sq ft · score 61 (C)
- Glendale High School· 397,265 sq ft · score 54 (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 Trabuco Hills High's energy grade?
Trabuco Hills High scores 85 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 Trabuco Hills High use?
Its 2024 site energy-use intensity was 20.9 kBtu/ft² across 416,446 sq ft, including 2,554,882 kWh of electricity.
What are Trabuco Hills High's carbon emissions?
Trabuco Hills High reported 579 tCO₂e of greenhouse-gas emissions (1.4 kgCO₂e/ft²) for 2024.
Where is Trabuco Hills High?
Trabuco Hills High is at 27501 Mustang Run, Mission Viejo, in Mission Viejo, California 92691. Its coordinates are 33.65351, -117.64999 (latitude, longitude), as published in the Building Energy Benchmarking Program (statewide) file.
How big is Trabuco Hills High and when was it built?
Trabuco Hills High has 416,446 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1985 as its year built. It is classed as K-12 school.
Is Trabuco Hills High 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, “Trabuco Hills High, Mission Viejo, California — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/california/trabuco-hills-high-f549b706 (data as of July 9, 2026).