Mayfair Residences

How does Mayfair Residences 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. Mayfair Residences's ENERGY STAR score of 100 compares with an average of 82 across the 9,612 that report a score; it scores higher than 76% of them. Its site EUI of 14.1 kBtu/ft² is about 59% 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 0.8 kgCO₂e/ft² is about 60% below the group average of 2.1 kgCO₂e/ft².

At 54,876 sq ft, it is about 64% below the average floor area of 150,919 sq ft for those buildings. It was built in 2013, 25 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 Mayfair Residences's energy performance changed over time?

BuildingCensus holds 6 California disclosures for Mayfair Residences, covering report years 2019–2024. Its ENERGY STAR score was 100 in both 2019 and 2024. Site EUI moved from 14.2 kBtu/ft² (2019) to 14.1 kBtu/ft² (2024), a 1% decrease. Reported emissions went from 49 tCO₂e to 46 tCO₂e over the same span (down 6%).

What does an ENERGY STAR score of 100 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: 100 is the top of the scale. BuildingCensus bands the score into report-card grades; 100 falls in band A — high performer (85–100). 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. Mayfair Residences's 14.1 kBtu/ft² across 54,876 sq ft works out to about 0.8 billion Btu (227 MWh-equivalent) in 2024. The disclosure also reports 132,303 kWh of electricity and 3,103 therms of natural gas for the year.

Which law requires Mayfair Residences to report its energy use?

Mayfair Residences 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:6868846:2024). 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.