City Skyline: 520 W 136th

How does City Skyline: 520 W 136th 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. City Skyline: 520 W 136th's ENERGY STAR score of 94 compares with an average of 63 across the 22,829 that report a score; it scores higher than 82% of them and lower than 17%. Its site EUI of 96.6 kBtu/ft² is about 29% 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 6.1 kgCO₂e/ft² is about 18% above the group average of 5.2 kgCO₂e/ft².

At 44,460 sq ft, it is about 56% below the average floor area of 100,951 sq ft for those buildings. It was built in 1926, 26 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 City Skyline: 520 W 136th's energy performance changed over time?

BuildingCensus holds 2 New York City disclosures for City Skyline: 520 W 136th, covering report years 2023–2024. Its ENERGY STAR score went from 95 in 2023 to 94 in 2024 (-1 points); its best year on file was 2023, at 95. Site EUI moved from 94.8 kBtu/ft² (2023) to 96.6 kBtu/ft² (2024), an 2% increase. Reported emissions went from 261 tCO₂e to 272 tCO₂e over the same span (up 4%).

What does an ENERGY STAR score of 94 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 94 means the building performs better than about 94% of its national peers. BuildingCensus bands the score into report-card grades; 94 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 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. City Skyline: 520 W 136th's 96.6 kBtu/ft² across 44,460 sq ft works out to about 4.3 billion Btu (1,259 MWh-equivalent) in 2024. Its source EUI of 129.9 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 211,469 kWh of electricity and 35,525 therms of natural gas for the year.

Which law requires City Skyline: 520 W 136th to report its energy use?

City Skyline: 520 W 136th 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:6282583:2024). 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.