Legacy West End (ly77)

How does Legacy West End (ly77) compare with other multifamily housing buildings in Washington, DC?

The latest disclosures cover 1,799 multifamily housing buildings in Washington, DC, out of 6,870 buildings citywide. Legacy West End (ly77)'s ENERGY STAR score of 63 compares with an average of 72 across the 1,618 that report a score; it scores higher than 30% of them and lower than 69%. Its site EUI of 42.6 kBtu/ft² is about 17% below the average of 51.1 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 3.6 kgCO₂e/ft² is roughly in line with the group average of 3.8 kgCO₂e/ft².

At 212,614 sq ft, it is about 56% above the average floor area of 136,346 sq ft for those buildings. It was built in 1989, 24 years later than the group's average year built (1965). 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 Legacy West End (ly77)'s energy performance changed over time?

BuildingCensus holds 6 Washington, DC disclosures for Legacy West End (ly77), covering report years 2019–2024. Its ENERGY STAR score went from 47 in 2019 to 63 in 2024 (+16 points); its best year on file was 2022, at 65. Site EUI moved from 57.3 kBtu/ft² (2019) to 42.6 kBtu/ft² (2024), a 26% decrease. Reported emissions went from 797 tCO₂e to 766 tCO₂e over the same span (down 4%).

What does an ENERGY STAR score of 63 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 63 means the building performs better than about 63% of its national peers. BuildingCensus bands the score into report-card grades; 63 falls in band C — below median (55–69). It sits 12 points below 75, the threshold for ENERGY STAR certification. In Washington, DC, 47% 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. Legacy West End (ly77)'s 42.6 kBtu/ft² across 212,614 sq ft works out to about 9.1 billion Btu (2,654 MWh-equivalent) in 2024. Its source EUI of 112.4 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 2,408,912 kWh of electricity, 8,326 therms of natural gas and 11,451 thousand gallons of water for the year.

Which law requires Legacy West End (ly77) to report its energy use?

Legacy West End (ly77) reports under the Clean and Affordable Energy Act / BEPS, the legal basis of Washington, DC's Building Energy Benchmarking program, which publishes each covered building's annual benchmarking results. The record shown here is the report-year 2024 disclosure (source record dc:PM6766508:2024). DC's Building Energy Performance Standards (BEPS) require buildings below the performance standard to improve over compliance cycles (the first ends December 31, 2026; later cycles run five years), with penalties for buildings that fail to meet their pathway.