Sarasota County, FL Environmental Rules: Flood Zones (2026)

Article XVI of Chapter 54, Flood Damage Prevention, was rewritten in its entirety by Ordinance No. 2023-068 to implement the National Flood Insurance Program alongside the Florida Building Code across Sarasota County's Special Flood Hazard Areas, Community Flood Hazard Areas, floodways, and the Coastal High Hazard Areas seaward of the state's Coastal Construction Control Line, which matters directly for the county's Gulf-front barrier islands. Section 54-516(a)(1) sets the baseline elevation rule for Zones A, A1-A30, AE, AO, AH, and Community Flood Hazard Areas: the lowest floor of new construction or a substantial improvement must clear the Base Flood Elevation plus one foot, the Florida Building Code elevation, or one foot above the local 100-year, 24-hour flood stage, whichever is higher.

Floodways get stricter treatment: Section 54-515 bars new fill, encroachments, and substantial improvements there unless a licensed engineer certifies the work won't raise flood levels or push water onto neighboring land. On the coast, Section 54-516(b) requires structures seaward of the Coastal Construction Control Line and in Coastal A Zones to sit on pilings or columns with the lowest floor's supporting members at or above the same Base Flood Elevation plus one foot standard, uses breakaway walls below that level, bars fill used for structural support, and flatly prohibits altering sand dunes or mangrove stands in a way that increases flood damage potential. 00 of coverage; the variance expires in 180 days unless a building permit is pulled and used, under Section 54-518.