Ca050_Eaves Santa Margarita (Cg74)
Multifamily Housing in California, CA · 111 Via Serena, Rancho Santa Margarita · 92688
At a glance
Ca050_Eaves Santa Margarita (Cg74) is a 286,991-square-foot multifamily housing building at 111 Via Serena, Rancho Santa Margarita in Rancho Santa Margarita, California, built in 1990. In its 2024 California benchmarking disclosure it reported a site energy-use intensity of 18.8 kBtu/ft² and 285 tCO₂e of greenhouse-gas emissions.
AB 802 (Public Resources Code §25402.10) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 18.8 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 285 tCO₂e |
| GHG intensity | 1.0 kgCO₂e/ft² |
| Electricity | 1,172,620 kWh |
| Natural gas | 10,664 therms |
| Gross floor area | 286,991 sq ft |
| Source record | california:15291999:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | — | 18.8 kBtu/ft² | 285 tCO₂e | |
| 2023 | 98 | +1 | 15.9 kBtu/ft² | 311 tCO₂e |
| 2022 | 97 | -1 | 16.0 kBtu/ft² | 336 tCO₂e |
| 2021 | 98 | 15.0 kBtu/ft² | 269 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
- 111 Via Serena, Rancho Santa Margarita
- City
- California
- State
- California
- ZIP
- 92688
- Coordinates
- 33.64448, -117.59617
Within ~1 km
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- W000758-Rancho Santa Margarita Cascore 100
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- Rancho Santa Margarita (0914)score 88
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K-12 School · 118,917 sq ft
See also: most efficient in California · biggest emitters
How does Ca050_Eaves Santa Margarita (Cg74) 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. Its site EUI of 18.8 kBtu/ft² is about half of 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 1.0 kgCO₂e/ft² is about half of the group average of 2.1 kgCO₂e/ft².
At 286,991 sq ft, it is about twice the average floor area of 150,919 sq ft for those buildings. Its 1990 construction date is close to 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 Ca050_Eaves Santa Margarita (Cg74)'s energy performance changed over time?
BuildingCensus holds 4 California disclosures for Ca050_Eaves Santa Margarita (Cg74), covering report years 2021–2024. Its ENERGY STAR score was 98 in both 2021 and 2023. Site EUI moved from 15.0 kBtu/ft² (2021) to 18.8 kBtu/ft² (2024), an 25% increase. Reported emissions went from 269 tCO₂e to 285 tCO₂e over the same span (up 6%).
What does a site EUI of 18.8 kBtu/ft² mean?
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. Ca050_Eaves Santa Margarita (Cg74)'s 18.8 kBtu/ft² across 286,991 sq ft works out to about 5.4 billion Btu (1,581 MWh-equivalent) in 2024. The disclosure also reports 1,172,620 kWh of electricity and 10,664 therms of natural gas for the year.
Which law requires Ca050_Eaves Santa Margarita (Cg74) to report its energy use?
Ca050_Eaves Santa Margarita (Cg74) 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:15291999:2024). 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
- The Diplomat· 286,969 sq ft · score 100 (A)
- Stonegate· 286,946 sq ft · score 77 (B)
- Walnut Creek Manor (Wa200)· 286,901 sq ft · score 41 (D)
- Sea Breeze Gardens (Sb037)· 286,884 sq ft · EUI 28.3 kBtu/ft²
- 3845 Nobel Dr· 286,800 sq ft · score 100 (A)
- Summerset Village - 29136· 286,752 sq ft · score 67 (C)
- 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 Ca050_Eaves Santa Margarita (Cg74)'s energy grade?
Ca050_Eaves Santa Margarita (Cg74) did not report an ENERGY STAR score in its 2024 disclosure, but its site energy-use intensity was 18.8 kBtu/ft².
How much energy does Ca050_Eaves Santa Margarita (Cg74) use?
Its 2024 site energy-use intensity was 18.8 kBtu/ft² across 286,991 sq ft, including 1,172,620 kWh of electricity and 10,664 therms of natural gas.
What are Ca050_Eaves Santa Margarita (Cg74)'s carbon emissions?
Ca050_Eaves Santa Margarita (Cg74) reported 285 tCO₂e of greenhouse-gas emissions (1.0 kgCO₂e/ft²) for 2024.
Where is Ca050_Eaves Santa Margarita (Cg74)?
Ca050_Eaves Santa Margarita (Cg74) is at 111 Via Serena, Rancho Santa Margarita, in Rancho Santa Margarita, California 92688. Its coordinates are 33.64448, -117.59617 (latitude, longitude), as published in the Building Energy Benchmarking Program (statewide) file.
How big is Ca050_Eaves Santa Margarita (Cg74) and when was it built?
Ca050_Eaves Santa Margarita (Cg74) has 286,991 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1990 as its year built. It is classed as multifamily housing.
Is Ca050_Eaves Santa Margarita (Cg74) 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, “Ca050_Eaves Santa Margarita (Cg74), Rancho Santa Margarita, California — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/california/ca050-eaves-santa-margarita-cg74-45fdbd0a (data as of July 9, 2026).