Showing ordinances that apply to Holtsville, NY
Holtsville is an unincorporated community (population 18,937) in Suffolk County, New York. Because Holtsville is not an incorporated city, it does not have its own municipal code. Instead, Suffolk County ordinances apply directly to properties here. The flood zones rules below are the ones that govern your area.
Suffolk County has extensive FEMA Special Flood Hazard Areas along Atlantic coast, Long Island Sound, Great South Bay, Peconic Bays, and Shinnecock Bay. New construction in VE and AE zones must elevate to BFE + 2 ft freeboard. Superstorm Sandy prompted enhanced elevation requirements countywide.
FEMA FIRM maps for Suffolk County were updated following Hurricane Sandy (2013 preliminary, 2024 effective in many towns). VE zones (velocity/wave action) cover Atlantic Ocean-fronting properties in Southampton, East Hampton, and barrier beaches. AE zones cover bayfronts and harbor frontage. NY State Building Code requires 2-foot freeboard above Base Flood Elevation in Suffolk County communities participating in FEMA Community Rating System. Lowest horizontal structural member must be at or above DFE (BFE + 2 ft). Breakaway walls required below DFE in V zones. Enclosed below-BFE areas limited to parking, storage, or building access. Substantial improvement rule: improvements exceeding 50% of market value require full flood-zone compliance. New Suffolk Sanitary Code Article 6 ties to flood zones for IA OWTS (innovative septic) requirements.
Violations of NFIP floodplain ordinances: community sanctions, policy suspensions, and fines up to $5,000 per violation. Illegally enclosed V-zone spaces: order to demolish, CO revocation, and insurance rating penalties.
See how Holtsville's flood zones rules stack up against other locations.
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