21240 S WESTERN AVE

How does 21240 S WESTERN AVE compare with other multifamily housing buildings in Los Angeles?

The latest disclosures cover 3,538 multifamily housing buildings in Los Angeles, out of 11,498 buildings citywide. 21240 S WESTERN AVE's ENERGY STAR score of 90 compares with an average of 78 across the 3,344 that report a score; it scores higher than 59% of them and lower than 39%. Its site EUI of 46.2 kBtu/ft² is about 24% above the average of 37.2 kBtu/ft² — it uses more energy per square foot than the typical building in that group.

At 23,326 sq ft, it is about 61% below the average floor area of 60,540 sq ft for those buildings. It was built in 1979, 4 years later than the group's average year built (1975). 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 21240 S WESTERN AVE's energy performance changed over time?

BuildingCensus holds 8 Los Angeles disclosures for 21240 S WESTERN AVE, covering report years 2018–2025. Its ENERGY STAR score went from 99 in 2018 to 90 in 2025 (-9 points); its best year on file was 2018, at 99. Site EUI moved from 37.8 kBtu/ft² (2018) to 46.2 kBtu/ft² (2025), an 22% increase. Reported emissions went from 50 tCO₂e to 59 tCO₂e over the same span (up 16%).

What does an ENERGY STAR score of 90 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 90 means the building performs better than about 90% of its national peers. BuildingCensus bands the score into report-card grades; 90 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 Los Angeles, 63% 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. 21240 S WESTERN AVE's 46.2 kBtu/ft² across 23,326 sq ft works out to about 1.1 billion Btu (316 MWh-equivalent) in 2025. Its source EUI of 73.8 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 890 thousand gallons of water for the year.

Which law requires 21240 S WESTERN AVE to report its energy use?

21240 S WESTERN AVE reports under LA Municipal Code Div. 97, §91.9701 (EBEWE), the legal basis of Los Angeles's Existing Buildings Energy & Water Efficiency (EBEWE) program, which publishes each covered building's annual benchmarking results. The record shown here is the report-year 2025 disclosure (source record la:467872762697:2025). EBEWE requires annual benchmarking plus audits/retro-commissioning every five years for privately owned buildings of 20,000 sq ft or more; non-compliance carries a $202 fee (LAMC §91.9712) plus possible late fees.