Willowridge Apartments

How does Willowridge 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. Willowridge Apartments's ENERGY STAR score of 80 compares with an average of 82 across the 9,612 that report a score; it scores higher than 32% of them and lower than 67%. Its site EUI of 48.8 kBtu/ft² is about 42% 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 2.9 kgCO₂e/ft² is about 37% above the group average of 2.1 kgCO₂e/ft².

At 94,522 sq ft, it is about 37% below the average floor area of 150,919 sq ft for those buildings. Its 1988 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 Willowridge Apartments's energy performance changed over time?

BuildingCensus holds 3 California disclosures for Willowridge Apartments, covering report years 2022–2024. Its ENERGY STAR score went from 75 in 2022 to 80 in 2024 (+5 points). Site EUI moved from 50.8 kBtu/ft² (2022) to 48.8 kBtu/ft² (2024), a 4% decrease. Reported emissions went from 294 tCO₂e to 272 tCO₂e over the same span (down 7%).

What does an ENERGY STAR score of 80 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 80 means the building performs better than about 80% of its national peers. BuildingCensus bands the score into report-card grades; 80 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. Willowridge Apartments's 48.8 kBtu/ft² across 94,522 sq ft works out to about 4.6 billion Btu (1,352 MWh-equivalent) in 2024. The disclosure also reports 648,017 kWh of electricity and 23,633 therms of natural gas for the year.

Which law requires Willowridge Apartments to report its energy use?

Willowridge 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:24727276:2024). 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.