NYC Local Laws · Defined
Local Law 92 of 2019: Sustainable roofing amendments
Works with Local Law 94 of 2019 to establish NYC sustainable-roof requirements involving solar photovoltaic systems, green roofs, or a combination.
New York City jurisdiction · Sources checked September 15, 2026. Law numbers repeat by year. These educational summaries are not legal advice or a complete compliance checklist. Later amendments, agency rules, building characteristics, and effective dates determine the requirements for a particular property. Use the linked City sources to confirm current obligations.
Why it matters
Review the two laws together with DOB guidance. Roof work triggers, excluded areas, structural capacity, and applicable exceptions determine the project scope. This is not a blanket instruction to cover every existing roof immediately, regardless of whether work is proposed.
In practice
A project example
A roof replacement study identifies the sustainable roofing zone and coordinates structure, roof drainage, equipment, and access before the owner selects the final replacement scope.
Technical references
General educational guidance from KOW Building Consultants. Examples are illustrative, not project records. The applicable contract, standard, program, and jurisdiction control the requirements for a specific assignment.