Casa Sierra

How does Casa Sierra 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. Casa Sierra's ENERGY STAR score of 72 compares with an average of 82 across the 9,612 that report a score; it scores higher than 23% of them and lower than 75%. Its site EUI of 51.7 kBtu/ft² is about 50% 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 45% above the group average of 2.1 kgCO₂e/ft².

At 85,580 sq ft, it is about 43% below the average floor area of 150,919 sq ft for those buildings. It was built in 1972, 16 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 Casa Sierra's energy performance changed over time?

BuildingCensus holds 3 California disclosures for Casa Sierra, covering report years 2022–2024. Its ENERGY STAR score went from 53 in 2022 to 72 in 2024 (+19 points). Site EUI moved from 59.4 kBtu/ft² (2022) to 51.7 kBtu/ft² (2024), a 13% decrease. Reported emissions went from 301 tCO₂e to 261 tCO₂e over the same span (down 13%).

What does an ENERGY STAR score of 72 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 72 means the building performs better than about 72% of its national peers. BuildingCensus bands the score into report-card grades; 72 falls in band B — above median (70–84). It sits 3 points below 75, the threshold for ENERGY STAR certification. 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. Casa Sierra's 51.7 kBtu/ft² across 85,580 sq ft works out to about 4.4 billion Btu (1,297 MWh-equivalent) in 2024. The disclosure also reports 485,830 kWh of electricity and 28,471 therms of natural gas for the year.

Which law requires Casa Sierra to report its energy use?

Casa Sierra 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:28345277:2024). 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.