The Mason Flats At Township Square (Ms035)

How does The Mason Flats At Township Square (Ms035) 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. The Mason Flats At Township Square (Ms035)'s ENERGY STAR score of 52 compares with an average of 82 across the 9,612 that report a score; it scores higher than 11% of them and lower than 89%. Its site EUI of 42.9 kBtu/ft² is about 25% 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 2.6 kgCO₂e/ft² is about 24% above the group average of 2.1 kgCO₂e/ft².

At 213,850 sq ft, it is about 42% above the average floor area of 150,919 sq ft for those buildings. It was built in 2016, 28 years later 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 The Mason Flats At Township Square (Ms035)'s energy performance changed over time?

BuildingCensus holds 4 California disclosures for The Mason Flats At Township Square (Ms035), covering report years 2019–2022. Its ENERGY STAR score went from 59 in 2019 to 52 in 2022 (-7 points); its best year on file was 2021, at 69. Site EUI moved from 40.8 kBtu/ft² (2019) to 42.9 kBtu/ft² (2022), an 5% increase. Reported emissions went from 523 tCO₂e to 557 tCO₂e over the same span (up 6%).

What does an ENERGY STAR score of 52 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 52 means the building performs better than about 52% of its national peers. BuildingCensus bands the score into report-card grades; 52 falls in band D — lowest band (1–54). It sits 23 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. The Mason Flats At Township Square (Ms035)'s 42.9 kBtu/ft² across 213,850 sq ft works out to about 9.2 billion Btu (2,689 MWh-equivalent) in 2022. The disclosure also reports 1,232,216 kWh of electricity and 50,612 therms of natural gas for the year.

Which law requires The Mason Flats At Township Square (Ms035) to report its energy use?

The Mason Flats At Township Square (Ms035) 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:6175874:2022). 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.