11423 N PORTER RANCH DR

How does 11423 N PORTER RANCH DR 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. 11423 N PORTER RANCH DR's ENERGY STAR score of 99 compares with an average of 78 across the 3,344 that report a score; it scores higher than 82% of them and lower than 14%. Its site EUI of 24.0 kBtu/ft² is about 35% below the average of 37.2 kBtu/ft² — it uses less energy per square foot than the typical building in that group.

At 76,746 sq ft, it is about 27% above the average floor area of 60,540 sq ft for those buildings. It was built in 2007, 32 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 11423 N PORTER RANCH DR's energy performance changed over time?

BuildingCensus holds 9 Los Angeles disclosures for 11423 N PORTER RANCH DR, covering report years 2017–2025. Its ENERGY STAR score went from 91 in 2022 to 99 in 2025 (+8 points); its best year on file was 2024, at 99. Site EUI moved from 28.8 kBtu/ft² (2022) to 24.0 kBtu/ft² (2025), a 17% decrease. Reported emissions went from 139 tCO₂e to 102 tCO₂e over the same span (down 27%).

What does an ENERGY STAR score of 99 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 99 means the building performs better than about 99% of its national peers. BuildingCensus bands the score into report-card grades; 99 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. 11423 N PORTER RANCH DR's 24.0 kBtu/ft² across 76,746 sq ft works out to about 1.8 billion Btu (540 MWh-equivalent) in 2025. Its source EUI of 49.0 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 1,822 thousand gallons of water for the year.

Which law requires 11423 N PORTER RANCH DR to report its energy use?

11423 N PORTER RANCH DR 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:112217100541:2025). 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.