Local Law 97 requires buildings larger than 25,000 square feet to meet ambitious carbon reduction targets, starting in 2024. The Department of Buildings provides guidance on compliance and reporting for LL97. The GHG Emission Calculator estimates a building's carbon penalty because of non-compliance with NYC Local Law 97 (2019). Input annual utility information and building characteristics to generate emissions thresholds and resulting estimated penalties for three major penalty periods (2024-2029, 2030-2034, 2035, and later). Affordable or rent-regulated housing may quality for alternate or delayed compliance with LL97.Some affordable housing is subject to delayed compliance requirements. There is also an alternate pathway for certain types of affordable housing. To comply with LL97, affordable housing building owners may choose the Prescriptive Energy Conservation Measures (PECM) Path and implement applicable ECMs or demonstrate that emissions are below the 2030 limit by 2024 if specific qualifications are met. These qualifications include buildings where more than 35% of units are rent-regulated, HDFC cooperatives, and buildings with HUD project-based assistance. Buildings must submit a report to the Department of Buildings (DOB) to demonstrate compliance by May 1, 2025.
Buildings with at least one rent-regulated unit where up to 35% of units are rent-regulated must meet the applicable emissions limits starting in 2026 and then subsequent limits beginning in 2030. Certain income-restricted housing is not required to meet the applicable emissions limits until 2035 and then must meet subsequent limits.
Buildings on land owned by New York City Housing Authority (NYCHA) will make efforts to reduce greenhouse gas emissions, on a portfolio-wide basis, by 40% by 2030 and by 80% by 2050. NYCHA developments in the Rental Assistance Demonstration (RAD) and Permanent Affordability Commitment Together (PACT) programs are also required to comply.