500 S WESTLAKE AVE

How does 500 S WESTLAKE 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. 500 S WESTLAKE AVE's ENERGY STAR score of 22 compares with an average of 78 across the 3,344 that report a score; it scores higher than 3% of them and lower than 96%. Its site EUI of 63.7 kBtu/ft² is about 71% above the average of 37.2 kBtu/ft² — it uses more energy per square foot than the typical building in that group.

At 26,600 sq ft, it is about 56% below the average floor area of 60,540 sq ft for those buildings. It was built in 1926, 49 years earlier 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 500 S WESTLAKE AVE's energy performance changed over time?

BuildingCensus holds 8 Los Angeles disclosures for 500 S WESTLAKE AVE, covering report years 2018–2025. Its ENERGY STAR score went from 47 in 2018 to 22 in 2025 (-25 points); its best year on file was 2019, at 49. Site EUI moved from 71.0 kBtu/ft² (2018) to 63.7 kBtu/ft² (2025), a 10% decrease. Reported emissions went from 108 tCO₂e to 92 tCO₂e over the same span (down 15%).

What does an ENERGY STAR score of 22 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 22 means the building performs better than about 22% of its national peers. BuildingCensus bands the score into report-card grades; 22 falls in band D — lowest band (1–54). It sits 53 points below 75, the threshold for ENERGY STAR certification. 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. 500 S WESTLAKE AVE's 63.7 kBtu/ft² across 26,600 sq ft works out to about 1.7 billion Btu (497 MWh-equivalent) in 2025. Its source EUI of 90.4 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 5,815 thousand gallons of water for the year.

Which law requires 500 S WESTLAKE AVE to report its energy use?

500 S WESTLAKE 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:479005844200:2025). 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.