Sommerset Apartments
Multifamily Housing in California, CA · 3265 Sweetwater Springs Boulevard, Spring Valley · 91978
At a glance
Sommerset Apartments is a 109,250-square-foot multifamily housing building at 3265 Sweetwater Springs Boulevard, Spring Valley in Spring Valley, California, built in 1985. In its 2024 California benchmarking disclosure it reported an ENERGY STAR score of 100 out of 100 (grade A), a site energy-use intensity of 12.5 kBtu/ft² and 84 tCO₂e of greenhouse-gas emissions. That score is higher than 76% of the 9,612 scored multifamily housing buildings in California.
AB 802 (Public Resources Code §25402.10) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 100 (band A) |
| Site EUI | 12.5 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 84 tCO₂e |
| GHG intensity | 0.8 kgCO₂e/ft² |
| Electricity | 210,585 kWh |
| Natural gas | 6,805 therms |
| Gross floor area | 109,250 sq ft |
| Source record | california:6683298:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 100 | ±0 | 12.5 kBtu/ft² | 84 tCO₂e |
| 2023 | 100 | ±0 | 14.7 kBtu/ft² | 99 tCO₂e |
| 2022 | 100 | +96 | 16.7 kBtu/ft² | 116 tCO₂e |
| 2021 | 4 | -90 | 63.0 kBtu/ft² | 395 tCO₂e |
| 2020 | 94 | 27.6 kBtu/ft² | 180 tCO₂e | |
| 2019 | — | — | — |
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
- 3265 Sweetwater Springs Boulevard, Spring Valley
- City
- California
- State
- California
- ZIP
- 91978
- Coordinates
- 32.73768, -116.97158
Within ~1 km
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How does Sommerset Apartments compare with other multifamily housing buildings in California?
The latest disclosures cover 10,630 multifamily housing buildings in California, out of 40,029 buildings citywide. Sommerset Apartments's ENERGY STAR score of 100 compares with an average of 82 across the 9,612 that report a score; it scores higher than 76% of them. Its site EUI of 12.5 kBtu/ft² is about 64% below the average of 34.4 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 0.8 kgCO₂e/ft² is about 63% below the group average of 2.1 kgCO₂e/ft².
At 109,250 sq ft, it is about 28% below the average floor area of 150,919 sq ft for those buildings. It was built in 1985, 3 years earlier than the group's average year built (1988). Across all 24 jurisdictions BuildingCensus covers, the 59,945 multifamily housing buildings average an ENERGY STAR score of 70 and a site EUI of 59.0 kBtu/ft².
How has Sommerset Apartments's energy performance changed over time?
BuildingCensus holds 6 California disclosures for Sommerset Apartments, covering report years 2019–2024. Its ENERGY STAR score went from 94 in 2020 to 100 in 2024 (+6 points); its best year on file was 2022, at 100. Site EUI moved from 27.6 kBtu/ft² (2020) to 12.5 kBtu/ft² (2024), a 55% decrease. Reported emissions went from 180 tCO₂e to 84 tCO₂e over the same span (down 53%).
What does an ENERGY STAR score of 100 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: 100 is the top of the scale. BuildingCensus bands the score into report-card grades; 100 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. Sommerset Apartments's 12.5 kBtu/ft² across 109,250 sq ft works out to about 1.4 billion Btu (400 MWh-equivalent) in 2024. The disclosure also reports 210,585 kWh of electricity and 6,805 therms of natural gas for the year.
Which law requires Sommerset Apartments to report its energy use?
Sommerset Apartments 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:6683298:2024). 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 multifamily housing buildings in California
- Brookvale Chateau (Bc)· 109,206 sq ft · score 91 (A)
- Ascent· 109,150 sq ft · score 61 (C)
- The Windsor (Wn31)· 109,146 sq ft · score 89 (A)
- The Palazzo East At Park Labrea (Pl72) - Building 5· 109,113 sq ft · score 89 (A)
- 1158 Hamal, Irvine, Ca 92618, Usa· 109,082 sq ft · score 100 (A)
- Luminaira- Cadence Family Irvine Housing Partners, L.P. (Lz22)· 109,082 sq ft · score 100 (A)
- Multifamily Housing buildings in California· 10,630 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 Sommerset Apartments's energy grade?
Sommerset Apartments scores 100 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 Sommerset Apartments use?
Its 2024 site energy-use intensity was 12.5 kBtu/ft² across 109,250 sq ft, including 210,585 kWh of electricity and 6,805 therms of natural gas.
What are Sommerset Apartments's carbon emissions?
Sommerset Apartments reported 84 tCO₂e of greenhouse-gas emissions (0.8 kgCO₂e/ft²) for 2024.
Where is Sommerset Apartments?
Sommerset Apartments is at 3265 Sweetwater Springs Boulevard, Spring Valley, in Spring Valley, California 91978. Its coordinates are 32.73768, -116.97158 (latitude, longitude), as published in the Building Energy Benchmarking Program (statewide) file.
How big is Sommerset Apartments and when was it built?
Sommerset Apartments has 109,250 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1985 as its year built. It is classed as multifamily housing.
Is Sommerset Apartments 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, “Sommerset Apartments, Spring Valley, California — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/california/sommerset-apartments-b807a3c6 (data as of July 9, 2026).