New York, NY Environmental Rules: Flood Zones (2026)

9's six subsections. Coastal special flood hazard areas and rivervine/other inland special flood hazard areas are defined as areas of land, including floodways, shown on the flood insurance rate maps referenced in Building Code section G402 of Appendix G. "Structure" is defined broadly: any object constructed, installed or placed in, on or under land or water, including a building, permanent shed, deck, in-ground or aboveground swimming pool, garage, mobile home, paving, road, public utility distribution system, storage tank, pier, dock, wharf, groin, jetty, seawall, revetment, bulkhead or breakwater.

2, an applicant for construction document approval must state whether the proposed work sits in a coastal zone or water-sensitive inland zone; failing to disclose that is itself a violation of the Building Code. 3, before the commissioner approves a new structure, a horizontal enlargement, or excavation/fill work in a tidal wetland, freshwater wetland, or coastal erosion hazard area, the applicant must produce documentation that the New York State Department of Environmental Conservation and any other applicable agency already issued their permits or approvals. 3, or any other activity regulated by Appendix G section G201, unless the application complies with Appendix G.

5 bars an applicant from falsely averring or omitting flood-zone status so the department wrongly determines the site is unaffected or that DEC approvals were obtained when they were not. 10. The definitions and disclosure duties were last amended by Local Law 2021/126 (effective 11/7/2022) and Local Law 2023/077 (effective 6/11/2023).