Cchnc-Plaza De Las Flores
Multifamily Housing in California, CA · 233 Carroll Street, Sunnyvale · 94086
At a glance
Cchnc-Plaza De Las Flores is a 69,358-square-foot multifamily housing building at 233 Carroll Street, Sunnyvale in Sunnyvale, California, built in 1990. 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 33.0 kBtu/ft² and 123 tCO₂e of greenhouse-gas emissions. That score is higher than 38% 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 | 85 (band A) |
| Site EUI | 33.0 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 123 tCO₂e |
| GHG intensity | 1.8 kgCO₂e/ft² |
| Electricity | 365,345 kWh |
| Natural gas | 9,736 therms |
| Gross floor area | 69,358 sq ft |
| Source record | california:34398592:2024 |
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
- 233 Carroll Street, Sunnyvale
- City
- California
- State
- California
- ZIP
- 94086
- Coordinates
- 37.37488, -122.02880
Within ~1 km
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See also: most efficient in California · biggest emitters
How does Cchnc-Plaza De Las Flores 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. Cchnc-Plaza De Las Flores's ENERGY STAR score of 85 compares with an average of 82 across the 9,612 that report a score; it scores higher than 38% of them and lower than 60%. Its site EUI of 33.0 kBtu/ft² is roughly in line with 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 1.8 kgCO₂e/ft² is about 16% below the group average of 2.1 kgCO₂e/ft².
At 69,358 sq ft, it is about half of 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.
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. Cchnc-Plaza De Las Flores's 33.0 kBtu/ft² across 69,358 sq ft works out to about 2.3 billion Btu (671 MWh-equivalent) in 2024. The disclosure also reports 365,345 kWh of electricity and 9,736 therms of natural gas for the year.
Which law requires Cchnc-Plaza De Las Flores to report its energy use?
Cchnc-Plaza De Las Flores 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:34398592:2024). 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
- 5200 Arden Way, Carmichael, Ca 95608· 69,335 sq ft · score 99 (A)
- 1553 Alice Street· 69,300 sq ft · score 90 (A)
- 2450 Newport Blvd· 69,300 sq ft · score 70 (B)
- Burano (Bu066)· 69,286 sq ft · score 75 (B)
- St. Joseph'S Senior Apartments· 69,260 sq ft · score 52 (D)
- 8600 Glenoaks Llc· 69,253 sq ft
- 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 Cchnc-Plaza De Las Flores's energy grade?
Cchnc-Plaza De Las Flores 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 Cchnc-Plaza De Las Flores use?
Its 2024 site energy-use intensity was 33.0 kBtu/ft² across 69,358 sq ft, including 365,345 kWh of electricity and 9,736 therms of natural gas.
What are Cchnc-Plaza De Las Flores's carbon emissions?
Cchnc-Plaza De Las Flores reported 123 tCO₂e of greenhouse-gas emissions (1.8 kgCO₂e/ft²) for 2024.
Where is Cchnc-Plaza De Las Flores?
Cchnc-Plaza De Las Flores is at 233 Carroll Street, Sunnyvale, in Sunnyvale, California 94086. Its coordinates are 37.37488, -122.02880 (latitude, longitude), as published in the Building Energy Benchmarking Program (statewide) file.
How big is Cchnc-Plaza De Las Flores and when was it built?
Cchnc-Plaza De Las Flores has 69,358 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 Cchnc-Plaza De Las Flores 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, “Cchnc-Plaza De Las Flores, Sunnyvale, California — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/california/cchnc-plaza-de-las-flores-49445b94 (data as of July 9, 2026).