Alef Realty: 585 Isham Street (Child)

How does Alef Realty: 585 Isham Street (Child) 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. Alef Realty: 585 Isham Street (Child)'s ENERGY STAR score of 33 compares with an average of 63 across the 22,829 that report a score; it scores higher than 19% of them and lower than 80%. Its site EUI of 112.8 kBtu/ft² is about 51% above the average of 74.9 kBtu/ft² — it uses more energy per square foot than the typical building in that group. Its emissions intensity of 6.8 kgCO₂e/ft² is about 30% above the group average of 5.2 kgCO₂e/ft².

At 41,345 sq ft, it is about 59% below the average floor area of 100,951 sq ft for those buildings. It was built in 1930, 22 years earlier 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 Alef Realty: 585 Isham Street (Child)'s energy performance changed over time?

BuildingCensus holds 3 New York City disclosures for Alef Realty: 585 Isham Street (Child), covering report years 2022–2024. Its ENERGY STAR score was 33 in both 2022 and 2024. Site EUI moved from 116.4 kBtu/ft² (2022) to 112.8 kBtu/ft² (2024), a 3% decrease. Reported emissions went from 270 tCO₂e to 280 tCO₂e over the same span (up 4%).

What does an ENERGY STAR score of 33 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 33 means the building performs better than about 33% of its national peers. BuildingCensus bands the score into report-card grades; 33 falls in band D — lowest band (1–54). It sits 42 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. Alef Realty: 585 Isham Street (Child)'s 112.8 kBtu/ft² across 41,345 sq ft works out to about 4.7 billion Btu (1,367 MWh-equivalent) in 2024. Its source EUI of 137.3 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 132,028 kWh of electricity, 40,043 therms of natural gas and 2,038 thousand gallons of water for the year.

Which law requires Alef Realty: 585 Isham Street (Child) to report its energy use?

Alef Realty: 585 Isham Street (Child) 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:6282447:2024). 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.