451 Broadway

How does 451 Broadway compare with other financial office buildings in New York City?

The latest disclosures cover 48 financial office buildings in New York City, out of 48,310 buildings citywide. 451 Broadway's ENERGY STAR score of 95 compares with an average of 72 across the 35 that report a score; it scores higher than 91% of them and lower than 6%. Its site EUI of 79.2 kBtu/ft² is roughly in line with the average of 82.7 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 8.4 kgCO₂e/ft² is about 11% above the group average of 7.6 kgCO₂e/ft².

At 65,000 sq ft, it is about 90% below the average floor area of 655,976 sq ft for those buildings. It was built in 1865, 103 years earlier than the group's average year built (1968). Across all 24 jurisdictions BuildingCensus covers, the 161 financial office buildings average an ENERGY STAR score of 72 and a site EUI of 69.2 kBtu/ft².

How has 451 Broadway's energy performance changed over time?

BuildingCensus holds 2 New York City disclosures for 451 Broadway, covering report years 2022–2023. Its ENERGY STAR score went from 89 in 2022 to 95 in 2023 (+6 points). Site EUI moved from 97.8 kBtu/ft² (2022) to 79.2 kBtu/ft² (2023), a 19% decrease. Reported emissions went from 525 tCO₂e to 543 tCO₂e over the same span (up 3%).

What does an ENERGY STAR score of 95 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 95 means the building performs better than about 95% of its national peers. BuildingCensus bands the score into report-card grades; 95 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. 451 Broadway's 79.2 kBtu/ft² across 65,000 sq ft works out to about 5.1 billion Btu (1,509 MWh-equivalent) in 2023. Its source EUI of 213.6 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 1,419,160 kWh of electricity, 3,084 therms of natural gas and 912 thousand gallons of water for the year.

Which law requires 451 Broadway to report its energy use?

451 Broadway 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 2023 disclosure (source record nyc:4041424:2023). 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.