21817 LANARK ST

How does 21817 LANARK ST 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. 21817 LANARK ST's ENERGY STAR score of 50 compares with an average of 78 across the 3,344 that report a score; it scores higher than 11% of them and lower than 89%. Its site EUI of 44.6 kBtu/ft² is about 20% above the average of 37.2 kBtu/ft² — it uses more energy per square foot than the typical building in that group.

At 30,872 sq ft, it is about half of the average floor area of 60,540 sq ft for those buildings. It was built in 1964, 11 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 21817 LANARK ST's energy performance changed over time?

BuildingCensus holds 8 Los Angeles disclosures for 21817 LANARK ST, covering report years 2018–2025. Its ENERGY STAR score went from 95 in 2018 to 50 in 2025 (-45 points); its best year on file was 2018, at 95. Site EUI moved from 22.2 kBtu/ft² (2018) to 44.6 kBtu/ft² (2025), an 101% increase. Reported emissions went from 48 tCO₂e to 76 tCO₂e over the same span (up 57%).

What does an ENERGY STAR score of 50 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 50 means the building performs better than about 50% of its national peers. BuildingCensus bands the score into report-card grades; 50 falls in band D — lowest band (1–54). It sits 25 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. 21817 LANARK ST's 44.6 kBtu/ft² across 30,872 sq ft works out to about 1.4 billion Btu (404 MWh-equivalent) in 2025. Its source EUI of 80.8 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 2,254 thousand gallons of water for the year.

Which law requires 21817 LANARK ST to report its energy use?

21817 LANARK ST 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:379184902168:2025). 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.