24358-Brookdale Walnut
Senior Living Community in California, CA · 19850 Golden Springs Drive, Walnut · 91789
At a glance
24358-Brookdale Walnut is a 51,001-square-foot senior living community building at 19850 Golden Springs Drive, Walnut in Walnut, California, built in 2000. In its 2020 California benchmarking disclosure it reported an ENERGY STAR score of 77 out of 100 (grade B), a site energy-use intensity of 55.3 kBtu/ft² and 174 tCO₂e of greenhouse-gas emissions. That score is higher than 29% of the 517 scored senior living community buildings in California.
AB 802 (Public Resources Code §25402.10) · reporting year 2020
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 77 (band B) |
| Site EUI | 55.3 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 174 tCO₂e |
| GHG intensity | 3.4 kgCO₂e/ft² |
| Electricity | 536,289 kWh |
| Natural gas | 9,930 therms |
| Gross floor area | 51,001 sq ft |
| Source record | california:4768578:2020 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2020latest | 77 | +1 | 55.3 kBtu/ft² | 174 tCO₂e |
| 2019 | 76 | 53.2 kBtu/ft² | 176 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.
Own or manage this building? Claim it to correct the record and get compliance alerts.
Location
- Address
- 19850 Golden Springs Drive, Walnut
- City
- California
- State
- California
- ZIP
- 91789
- Coordinates
- 34.00121, -117.83724
Within ~1 km
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See also: most efficient in California · biggest emitters
How does 24358-Brookdale Walnut compare with other senior living community buildings in California?
The latest disclosures cover 542 senior living community buildings in California, out of 40,029 buildings citywide. 24358-Brookdale Walnut's ENERGY STAR score of 77 compares with an average of 81 across the 517 that report a score; it scores higher than 29% of them and lower than 70%. Its site EUI of 55.3 kBtu/ft² is roughly in line with the average of 51.6 kBtu/ft². Its emissions intensity of 3.4 kgCO₂e/ft² is roughly in line with the group average of 3.2 kgCO₂e/ft².
At 51,001 sq ft, it is about half of the average floor area of 104,319 sq ft for those buildings. Its 2000 construction date is close to the group's average year built (1998). Across all 24 jurisdictions BuildingCensus covers, the 1,181 senior living community buildings average an ENERGY STAR score of 71 and a site EUI of 73.6 kBtu/ft².
How has 24358-Brookdale Walnut's energy performance changed over time?
BuildingCensus holds 2 California disclosures for 24358-Brookdale Walnut, covering report years 2019–2020. Its ENERGY STAR score went from 76 in 2019 to 77 in 2020 (+1 points). Site EUI moved from 53.2 kBtu/ft² (2019) to 55.3 kBtu/ft² (2020), an 4% increase. Reported emissions went from 176 tCO₂e to 174 tCO₂e over the same span (down 1%).
What does an ENERGY STAR score of 77 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 77 means the building performs better than about 77% of its national peers. BuildingCensus bands the score into report-card grades; 77 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. 24358-Brookdale Walnut's 55.3 kBtu/ft² across 51,001 sq ft works out to about 2.8 billion Btu (827 MWh-equivalent) in 2020. The disclosure also reports 536,289 kWh of electricity and 9,930 therms of natural gas for the year.
Which law requires 24358-Brookdale Walnut to report its energy use?
24358-Brookdale Walnut 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 2020 disclosure (source record california:4768578:2020). 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 senior living community buildings in California
- 1650 Monrovia Ave· 50,921 sq ft · score 100 (A)
- Siena Skilled Nursing· 50,911 sq ft · score 45 (D)
- Sunset Villa Post Acute (Lo060)· 50,848 sq ft · EUI 95.5 kBtu/ft²
- Avenues Transitional Care Center· 50,814 sq ft · score 99 (A)
- 12730 Monte Vista Rd, Poway, Ca 92064· 50,800 sq ft · score 100 (A)
- Grace Gardens At Town And Country· 50,564 sq ft · score 96 (A)
- Senior Living Community buildings in California· 542 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 24358-Brookdale Walnut's energy grade?
24358-Brookdale Walnut scores 77 out of 100 on ENERGY STAR — band B, above median (70–84) — in its 2020 California disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does 24358-Brookdale Walnut use?
Its 2020 site energy-use intensity was 55.3 kBtu/ft² across 51,001 sq ft, including 536,289 kWh of electricity and 9,930 therms of natural gas.
What are 24358-Brookdale Walnut's carbon emissions?
24358-Brookdale Walnut reported 174 tCO₂e of greenhouse-gas emissions (3.4 kgCO₂e/ft²) for 2020.
Where is 24358-Brookdale Walnut?
24358-Brookdale Walnut is at 19850 Golden Springs Drive, Walnut, in Walnut, California 91789. Its coordinates are 34.00121, -117.83724 (latitude, longitude), as published in the Building Energy Benchmarking Program (statewide) file.
How big is 24358-Brookdale Walnut and when was it built?
24358-Brookdale Walnut has 51,001 sq ft of gross floor area, as reported in its 2020 disclosure. The disclosure lists 2000 as its year built. It is classed as senior living community.
Is 24358-Brookdale Walnut covered by AB 802 (Public Resources Code §25402.10)?
Yes — it appears in the 2020 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, “24358-Brookdale Walnut, Walnut, California — 2020 benchmarking disclosure”, https://buildingcensus.com/buildings/california/24358-brookdale-walnut-9a9aa379 (data as of July 9, 2026).