Willow Run Apartments
Multifamily Housing in California, CA · 5324 Marconi Avenue, Carmichael · 95608
At a glance
Willow Run Apartments is a 70,180-square-foot multifamily housing building at 5324 Marconi Avenue, Carmichael in Carmichael, California, built in 1989. In its 2024 California benchmarking disclosure it reported a site energy-use intensity of 1.6 kBtu/ft² and 7 tCO₂e of greenhouse-gas emissions.
AB 802 (Public Resources Code §25402.10) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 1.6 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 7 tCO₂e |
| GHG intensity | 0.1 kgCO₂e/ft² |
| Electricity | 32,086 kWh |
| Natural gas | 70 therms |
| Gross floor area | 70,180 sq ft |
| Source record | california:26996819:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | — | 1.6 kBtu/ft² | 7 tCO₂e | |
| 2022 | — | 1.8 kBtu/ft² | 8 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
- 5324 Marconi Avenue, Carmichael
- City
- California
- State
- California
- ZIP
- 95608
- Coordinates
- 38.61601, -121.34051
Within ~1 km
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- The Palms Patio Apartmentsscore 71
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See also: most efficient in California · biggest emitters
How does Willow Run Apartments 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 1.6 kBtu/ft² is about 95% below 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 0.1 kgCO₂e/ft² is about 96% below the group average of 2.1 kgCO₂e/ft².
At 70,180 sq ft, it is about half of the average floor area of 150,919 sq ft for those buildings. Its 1989 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 Willow Run Apartments's energy performance changed over time?
BuildingCensus holds 2 California disclosures for Willow Run Apartments, covering report years 2022, 2024. Site EUI moved from 1.8 kBtu/ft² (2022) to 1.6 kBtu/ft² (2024), a 11% decrease. Reported emissions went from 8 tCO₂e to 7 tCO₂e over the same span (down 21%).
What does a site EUI of 1.6 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. Willow Run Apartments's 1.6 kBtu/ft² across 70,180 sq ft works out to about 0.1 billion Btu (33 MWh-equivalent) in 2024. The disclosure also reports 32,086 kWh of electricity and 70 therms of natural gas for the year.
Which law requires Willow Run Apartments to report its energy use?
Willow Run Apartments 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:26996819:2024). 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
- Main + Nine (Mn077)· 70,177 sq ft · score 89 (A)
- Lawrence Road· 70,174 sq ft · score 94 (A)
- The Rivermark· 70,172 sq ft · score 100 (A)
- 1427 West Mission Blvd· 70,160 sq ft · score 31 (D)
- The Grove: The Grove· 70,160 sq ft · score 95 (A)
- Goodmanor Apartments· 70,150 sq ft · score 95 (A)
- 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 Willow Run Apartments's energy grade?
Willow Run Apartments did not report an ENERGY STAR score in its 2024 disclosure, but its site energy-use intensity was 1.6 kBtu/ft².
How much energy does Willow Run Apartments use?
Its 2024 site energy-use intensity was 1.6 kBtu/ft² across 70,180 sq ft, including 32,086 kWh of electricity and 70 therms of natural gas.
What are Willow Run Apartments's carbon emissions?
Willow Run Apartments reported 7 tCO₂e of greenhouse-gas emissions (0.1 kgCO₂e/ft²) for 2024.
Where is Willow Run Apartments?
Willow Run Apartments is at 5324 Marconi Avenue, Carmichael, in Carmichael, California 95608. Its coordinates are 38.61601, -121.34051 (latitude, longitude), as published in the Building Energy Benchmarking Program (statewide) file.
How big is Willow Run Apartments and when was it built?
Willow Run Apartments has 70,180 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1989 as its year built. It is classed as multifamily housing.
Is Willow Run Apartments 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, “Willow Run Apartments, Carmichael, California — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/california/willow-run-apartments-6516b5f6 (data as of July 9, 2026).