Cchnc-Flower Park Plaza
Multifamily Housing in California, CA · 901 West 1St Street, Santa Ana · 92703
At a glance
Cchnc-Flower Park Plaza is a 73,150-square-foot multifamily housing building at 901 West 1St Street, Santa Ana in Santa Ana, California, built in 1984. In its 2024 California benchmarking disclosure it reported an ENERGY STAR score of 81 out of 100 (grade B), a site energy-use intensity of 56.4 kBtu/ft² and 237 tCO₂e of greenhouse-gas emissions. That score is higher than 33% 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 | 81 (band B) |
| Site EUI | 56.4 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 237 tCO₂e |
| GHG intensity | 3.2 kgCO₂e/ft² |
| Electricity | 630,607 kWh |
| Natural gas | 21,439 therms |
| Gross floor area | 73,150 sq ft |
| Source record | california:34288183:2024 |
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
- 901 West 1St Street, Santa Ana
- City
- California
- State
- California
- ZIP
- 92703
- Coordinates
- 33.74597, -117.87716
Within ~1 km
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See also: most efficient in California · biggest emitters
How does Cchnc-Flower Park Plaza 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-Flower Park Plaza's ENERGY STAR score of 81 compares with an average of 82 across the 9,612 that report a score; it scores higher than 33% of them and lower than 66%. Its site EUI of 56.4 kBtu/ft² is about 64% above the average of 34.4 kBtu/ft² — it uses more energy per square foot than the typical building in that group. Its emissions intensity of 3.2 kgCO₂e/ft² is about 54% above the group average of 2.1 kgCO₂e/ft².
At 73,150 sq ft, it is about half of the average floor area of 150,919 sq ft for those buildings. It was built in 1984, 4 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.
What does an ENERGY STAR score of 81 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 81 means the building performs better than about 81% of its national peers. BuildingCensus bands the score into report-card grades; 81 falls in band B — above median (70–84). 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-Flower Park Plaza's 56.4 kBtu/ft² across 73,150 sq ft works out to about 4.1 billion Btu (1,209 MWh-equivalent) in 2024. The disclosure also reports 630,607 kWh of electricity and 21,439 therms of natural gas for the year.
Which law requires Cchnc-Flower Park Plaza to report its energy use?
Cchnc-Flower Park Plaza 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:34288183:2024). 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
- Virginia Lane Apartments - Total· 73,146 sq ft · score 97 (A)
- Le Tournesol Apartments· 73,132 sq ft · score 100 (A)
- 1380 30Th Ave· 73,132 sq ft · score 100 (A)
- 62168 Verbena Rd· 73,125 sq ft · score 100 (A)
- 250 S Eastern Ave· 73,105 sq ft · score 100 (A)
- 451 E Riverside Dr· 73,104 sq ft · score 60 (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 Cchnc-Flower Park Plaza's energy grade?
Cchnc-Flower Park Plaza scores 81 out of 100 on ENERGY STAR — band B, above median (70–84) — in its 2024 California disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does Cchnc-Flower Park Plaza use?
Its 2024 site energy-use intensity was 56.4 kBtu/ft² across 73,150 sq ft, including 630,607 kWh of electricity and 21,439 therms of natural gas.
What are Cchnc-Flower Park Plaza's carbon emissions?
Cchnc-Flower Park Plaza reported 237 tCO₂e of greenhouse-gas emissions (3.2 kgCO₂e/ft²) for 2024.
Where is Cchnc-Flower Park Plaza?
Cchnc-Flower Park Plaza is at 901 West 1St Street, Santa Ana, in Santa Ana, California 92703. Its coordinates are 33.74597, -117.87716 (latitude, longitude), as published in the Building Energy Benchmarking Program (statewide) file.
How big is Cchnc-Flower Park Plaza and when was it built?
Cchnc-Flower Park Plaza has 73,150 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1984 as its year built. It is classed as multifamily housing.
Is Cchnc-Flower Park Plaza 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-Flower Park Plaza, Santa Ana, California — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/california/cchnc-flower-park-plaza-3a0b8465 (data as of July 9, 2026).