15 Charles at Waverly Place Condominium (15 Charles Street)

How does 15 Charles at Waverly Place Condominium (15 Charles Street) 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. 15 Charles at Waverly Place Condominium (15 Charles Street)'s ENERGY STAR score of 5 compares with an average of 63 across the 22,829 that report a score; it scores higher than 4% of them and lower than 95%. Its site EUI of 136.9 kBtu/ft² is about 83% 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 8.7 kgCO₂e/ft² is about 67% above the group average of 5.2 kgCO₂e/ft².

At 118,865 sq ft, it is about 18% above the average floor area of 100,951 sq ft for those buildings. It was built in 1964, 12 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 15 Charles at Waverly Place Condominium (15 Charles Street)'s energy performance changed over time?

BuildingCensus holds 3 New York City disclosures for 15 Charles at Waverly Place Condominium (15 Charles Street), covering report years 2022–2024. Its ENERGY STAR score went from 1 in 2022 to 5 in 2024 (+4 points). Site EUI moved from 186.2 kBtu/ft² (2022) to 136.9 kBtu/ft² (2024), a 26% decrease. Reported emissions went from 1,162 tCO₂e to 1,032 tCO₂e over the same span (down 11%).

What does an ENERGY STAR score of 5 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 5 means the building performs better than about 5% of its national peers. BuildingCensus bands the score into report-card grades; 5 falls in band D — lowest band (1–54). It sits 70 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. 15 Charles at Waverly Place Condominium (15 Charles Street)'s 136.9 kBtu/ft² across 118,865 sq ft works out to about 16.3 billion Btu (4,769 MWh-equivalent) in 2024. Its source EUI of 183.5 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 792,674 kWh of electricity, 135,628 therms of natural gas and 6,787 thousand gallons of water for the year.

Which law requires 15 Charles at Waverly Place Condominium (15 Charles Street) to report its energy use?

15 Charles at Waverly Place Condominium (15 Charles Street) 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:24317571:2024). 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.