Longfellow Elementary
K-12 School in California, CA · 5055 July St., San Diego · 92110
At a glance
Longfellow Elementary is a 57,105-square-foot K-12 school at 5055 July St., San Diego in San Diego, California, built in 1955. In its 2024 California benchmarking disclosure it reported an ENERGY STAR score of 40 out of 100 (grade D), a site energy-use intensity of 29.3 kBtu/ft² and 119 tCO₂e of greenhouse-gas emissions. That score is higher than 10% 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 | 40 (band D) |
| Site EUI | 29.3 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 119 tCO₂e |
| GHG intensity | 2.1 kgCO₂e/ft² |
| Electricity | 312,987 kWh |
| Natural gas | 9,036 therms |
| Gross floor area | 57,105 sq ft |
| Source record | california:26669:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 40 | +5 | 29.3 kBtu/ft² | 119 tCO₂e |
| 2023 | 35 | -15 | 33.5 kBtu/ft² | 129 tCO₂e |
| 2022 | 50 | 29.6 kBtu/ft² | 110 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
- 5055 July St., San Diego
- City
- California
- State
- California
- ZIP
- 92110
- Coordinates
- 32.78343, -117.18876
Within ~1 km
Nearby benchmarked buildings
No other benchmarked buildings within ~1 km.
See also: most efficient in California · biggest emitters
How does Longfellow Elementary 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. Longfellow Elementary's ENERGY STAR score of 40 compares with an average of 74 across the 2,016 that report a score; it scores higher than 10% of them and lower than 90%. Its site EUI of 29.3 kBtu/ft² is about 15% 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 2.1 kgCO₂e/ft² is roughly in line with the group average of 2.0 kgCO₂e/ft².
At 57,105 sq ft, it is about 56% below the average floor area of 129,123 sq ft for those buildings. It was built in 1955, 21 years earlier 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 Longfellow Elementary's energy performance changed over time?
BuildingCensus holds 3 California disclosures for Longfellow Elementary, covering report years 2022–2024. Its ENERGY STAR score went from 50 in 2022 to 40 in 2024 (-10 points); its best year on file was 2022, at 50. Site EUI moved from 29.6 kBtu/ft² (2022) to 29.3 kBtu/ft² (2024), a 1% decrease. Reported emissions went from 110 tCO₂e to 119 tCO₂e over the same span (up 8%).
What does an ENERGY STAR score of 40 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 40 means the building performs better than about 40% of its national peers. BuildingCensus bands the score into report-card grades; 40 falls in band D — lowest band (1–54). It sits 35 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. Longfellow Elementary's 29.3 kBtu/ft² across 57,105 sq ft works out to about 1.7 billion Btu (490 MWh-equivalent) in 2024. The disclosure also reports 312,987 kWh of electricity and 9,036 therms of natural gas for the year.
Which law requires Longfellow Elementary to report its energy use?
Longfellow Elementary 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:26669:2024). 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
- Washington Es· 57,063 sq ft · score 74 (B)
- Kaiser Elementary· 57,057 sq ft · score 96 (A)
- Redwood Elementary School· 57,030 sq ft · score 82 (B)
- Mesquite Trails Elementary School· 56,966 sq ft · score 75 (B)
- Grimes Elementary· 56,962 sq ft
- Grimes Elementary· 56,962 sq ft · score 98 (A)
- 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 Longfellow Elementary's energy grade?
Longfellow Elementary scores 40 out of 100 on ENERGY STAR — band D, lowest band (1–54) — in its 2024 California disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does Longfellow Elementary use?
Its 2024 site energy-use intensity was 29.3 kBtu/ft² across 57,105 sq ft, including 312,987 kWh of electricity and 9,036 therms of natural gas.
What are Longfellow Elementary's carbon emissions?
Longfellow Elementary reported 119 tCO₂e of greenhouse-gas emissions (2.1 kgCO₂e/ft²) for 2024.
Where is Longfellow Elementary?
Longfellow Elementary is at 5055 July St., San Diego, in San Diego, California 92110. Its coordinates are 32.78343, -117.18876 (latitude, longitude), as published in the Building Energy Benchmarking Program (statewide) file.
How big is Longfellow Elementary and when was it built?
Longfellow Elementary has 57,105 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1955 as its year built. It is classed as K-12 school.
Is Longfellow Elementary 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, “Longfellow Elementary, San Diego, California — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/california/longfellow-elementary-9fa999a7 (data as of July 9, 2026).