27 Washington Square North

How does 27 Washington Square North compare with other residence hall/dormitory buildings in New York City?

The latest disclosures cover 343 residence hall/dormitory buildings in New York City, out of 48,310 buildings citywide. 27 Washington Square North's ENERGY STAR score of 92 compares with an average of 69 across the 177 that report a score; it scores higher than 75% of them and lower than 22%. Its site EUI of 57.2 kBtu/ft² is about 28% below the average of 79.6 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 3.3 kgCO₂e/ft² is about 40% below the group average of 5.5 kgCO₂e/ft².

At 49,133 sq ft, it is about 43% below the average floor area of 85,583 sq ft for those buildings. It was built in 1898, 48 years earlier than the group's average year built (1947). Across all 24 jurisdictions BuildingCensus covers, the 702 residence hall/dormitory buildings average an ENERGY STAR score of 70 and a site EUI of 70.7 kBtu/ft².

How has 27 Washington Square North's energy performance changed over time?

BuildingCensus holds 3 New York City disclosures for 27 Washington Square North, covering report years 2022–2024. Its ENERGY STAR score went from 97 in 2022 to 92 in 2024 (-5 points); its best year on file was 2023, at 99. Site EUI moved from 60.8 kBtu/ft² (2022) to 57.2 kBtu/ft² (2024), a 6% decrease. Reported emissions went from 166 tCO₂e to 161 tCO₂e over the same span (down 3%).

What does an ENERGY STAR score of 92 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 92 means the building performs better than about 92% of its national peers. BuildingCensus bands the score into report-card grades; 92 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. 27 Washington Square North's 57.2 kBtu/ft² across 49,133 sq ft works out to about 2.8 billion Btu (824 MWh-equivalent) in 2024. Its source EUI of 66.9 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 55,845 kWh of electricity, 26,214 therms of natural gas and 597 thousand gallons of water for the year.

Which law requires 27 Washington Square North to report its energy use?

27 Washington Square North 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:6797673:2024). 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.