10563 Willow Glen

How does 10563 Willow Glen 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. 10563 Willow Glen's ENERGY STAR score of 77 compares with an average of 82 across the 9,612 that report a score; it scores higher than 29% of them and lower than 70%. Its site EUI of 53.0 kBtu/ft² is about 54% 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 3.0 kgCO₂e/ft² is about 41% above the group average of 2.1 kgCO₂e/ft².

At 153,250 sq ft, it is roughly in line with the average floor area of 150,919 sq ft for those buildings. It was built in 1976, 12 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.

How has 10563 Willow Glen's energy performance changed over time?

BuildingCensus holds 5 California disclosures for 10563 Willow Glen, covering report years 2020–2024. Its ENERGY STAR score went from 51 in 2020 to 77 in 2024 (+26 points). Site EUI moved from 58.5 kBtu/ft² (2020) to 53.0 kBtu/ft² (2024), a 9% decrease. Reported emissions went from 520 tCO₂e to 453 tCO₂e over the same span (down 13%).

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. 10563 Willow Glen's 53.0 kBtu/ft² across 153,250 sq ft works out to about 8.1 billion Btu (2,380 MWh-equivalent) in 2024. The disclosure also reports 815,213 kWh of electricity and 50,608 therms of natural gas for the year.

Which law requires 10563 Willow Glen to report its energy use?

10563 Willow Glen 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:3891647:2024). 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.