18523 Corwin Rd
Medical Office in California, CA · 18523 Corwin Rd, Apple Valley · 92307
At a glance
18523 Corwin Rd is a 53,498-square-foot medical office at 18523 Corwin Rd, Apple Valley in Apple Valley, California, built in 1992. In its 2022 California benchmarking disclosure it reported an ENERGY STAR score of 76 out of 100 (grade B), a site energy-use intensity of 60.4 kBtu/ft² and 229 tCO₂e of greenhouse-gas emissions. That score is higher than 55% of the 546 scored medical office buildings in California.
AB 802 (Public Resources Code §25402.10) · reporting year 2022
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 76 (band B) |
| Site EUI | 60.4 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 229 tCO₂e |
| GHG intensity | 4.3 kgCO₂e/ft² |
| Electricity | 946,875 kWh |
| Gross floor area | 53,498 sq ft |
| Source record | california:20066387:2022 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2022latest | 76 | 60.4 kBtu/ft² | 229 tCO₂e | |
| 2020 | — | — | — |
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
- 18523 Corwin Rd, Apple Valley
- City
- California
- State
- California
- ZIP
- 92307
- Coordinates
- 34.54075, -117.25995
Within ~1 km
Nearby benchmarked buildings
Hospital (General Medical & Surgical) · 249,480 sq ft
Self-Storage Facility · 68,684 sq ft
See also: most efficient in California · biggest emitters
How does 18523 Corwin Rd compare with other medical office buildings in California?
The latest disclosures cover 602 medical office buildings in California, out of 40,029 buildings citywide. 18523 Corwin Rd's ENERGY STAR score of 76 compares with an average of 63 across the 546 that report a score; it scores higher than 55% of them and lower than 45%. Its site EUI of 60.4 kBtu/ft² is about 36% below the average of 94.3 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 4.3 kgCO₂e/ft² is about 23% below the group average of 5.6 kgCO₂e/ft².
At 53,498 sq ft, it is about half of the average floor area of 100,847 sq ft for those buildings. Its 1992 construction date is close to the group's average year built (1991). Across all 24 jurisdictions BuildingCensus covers, the 1,266 medical office buildings average an ENERGY STAR score of 64 and a site EUI of 92.2 kBtu/ft².
How has 18523 Corwin Rd's energy performance changed over time?
BuildingCensus holds 2 California disclosures for 18523 Corwin Rd, covering report years 2020, 2022. Only one of those years carries energy figures.
What does an ENERGY STAR score of 76 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 76 means the building performs better than about 76% of its national peers. BuildingCensus bands the score into report-card grades; 76 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. 18523 Corwin Rd's 60.4 kBtu/ft² across 53,498 sq ft works out to about 3.2 billion Btu (947 MWh-equivalent) in 2022. The disclosure also reports 946,875 kWh of electricity for the year.
Which law requires 18523 Corwin Rd to report its energy use?
18523 Corwin Rd 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 2022 disclosure (source record california:20066387:2022). 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 medical office buildings in California
- Ca6581 - Chino Grand Medical Offices· 53,147 sq ft · score 71 (B)
- 1310 Las Tablas· 52,953 sq ft · score 94 (A)
- 14901 Rinaldi St· 52,926 sq ft · score 80 (B)
- Ca2491 - Rancho Bernardo Medical Offices· 52,911 sq ft · score 43 (D)
- Shso - 100 Rowland Way - Novato· 52,798 sq ft · score 54 (D)
- St. George Medical Plaza· 52,778 sq ft · score 19 (D)
- Medical Office buildings in California· 602 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 18523 Corwin Rd's energy grade?
18523 Corwin Rd scores 76 out of 100 on ENERGY STAR — band B, above median (70–84) — in its 2022 California disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does 18523 Corwin Rd use?
Its 2022 site energy-use intensity was 60.4 kBtu/ft² across 53,498 sq ft, including 946,875 kWh of electricity.
What are 18523 Corwin Rd's carbon emissions?
18523 Corwin Rd reported 229 tCO₂e of greenhouse-gas emissions (4.3 kgCO₂e/ft²) for 2022.
Where is 18523 Corwin Rd?
18523 Corwin Rd is at 18523 Corwin Rd, Apple Valley, in Apple Valley, California 92307. Its coordinates are 34.54075, -117.25995 (latitude, longitude), as published in the Building Energy Benchmarking Program (statewide) file.
How big is 18523 Corwin Rd and when was it built?
18523 Corwin Rd has 53,498 sq ft of gross floor area, as reported in its 2022 disclosure. The disclosure lists 1992 as its year built. It is classed as medical office.
Is 18523 Corwin Rd covered by AB 802 (Public Resources Code §25402.10)?
Yes — it appears in the 2022 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, “18523 Corwin Rd, Apple Valley, California — 2022 benchmarking disclosure”, https://buildingcensus.com/buildings/california/18523-corwin-rd-b119d6cb (data as of July 9, 2026).