871 Westchester Avenue

How does 871 Westchester Avenue compare with other multifamily housing buildings in New York City?

The latest disclosures cover 33,022 multifamily housing buildings in New York City, out of 48,310 buildings citywide. 871 Westchester Avenue's ENERGY STAR score of 58 compares with an average of 63 across the 22,829 that report a score; it scores higher than 39% of them and lower than 60%. Its site EUI of 72.2 kBtu/ft² is roughly in line with the average of 74.9 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 4.9 kgCO₂e/ft² is roughly in line with the group average of 5.2 kgCO₂e/ft².

At 77,364 sq ft, it is about 23% below the average floor area of 100,951 sq ft for those buildings. It was built in 2007, 55 years later than the group's average year built (1952). 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 871 Westchester Avenue's energy performance changed over time?

BuildingCensus holds 3 New York City disclosures for 871 Westchester Avenue, covering report years 2022–2024. Its ENERGY STAR score went from 8 in 2022 to 58 in 2024 (+50 points). Site EUI moved from 126.3 kBtu/ft² (2022) to 72.2 kBtu/ft² (2024), a 43% decrease. Reported emissions went from 565 tCO₂e to 376 tCO₂e over the same span (down 33%).

What does an ENERGY STAR score of 58 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 58 means the building performs better than about 58% of its national peers. BuildingCensus bands the score into report-card grades; 58 falls in band C — below median (55–69). It sits 17 points below 75, the threshold for ENERGY STAR certification. In New York City, 43% 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. 871 Westchester Avenue's 72.2 kBtu/ft² across 77,364 sq ft works out to about 5.6 billion Btu (1,637 MWh-equivalent) in 2024. Its source EUI of 104.8 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 375,673 kWh of electricity and 43,042 therms of natural gas for the year.

Which law requires 871 Westchester Avenue to report its energy use?

871 Westchester Avenue reports under Local Law 84 (LL84), the legal basis of New York City's Energy and Water Data Disclosure program, which publishes each covered building's annual benchmarking results. The record shown here is the report-year 2024 disclosure (source record nyc:2813848:2024). Under Local Law 97, buildings over 25,000 sq ft face carbon caps with fines of $268 per metric ton of CO₂e over the limit, phasing in from 2024.