Charlotte County, FL Fence Regulations: Retaining Walls (2026)

Section 3-2-302 of the Charlotte County Code, part of the flood damage prevention article adopted by Ordinance No. 2016-014, states that retaining walls and sidewalks and driveways that involve the placement of fill in regulated floodways shall meet the limitations of section 3-2-282 of this article. Section 3-2-282 requires a floodway encroachment analysis showing the wall and any accompanying fill will not raise the base flood elevation; without that analysis, no fill-supported retaining wall can be authorized in a mapped regulatory floodway. Section 3-2-300 adds that any other development not separately addressed, including retaining walls, must still be anchored against flotation and lateral movement and built of flood damage-resistant materials.

A tighter standard applies on the barrier islands and other coastal high hazard (zone V) parcels along Charlotte Harbor, Lemon Bay, Gasparilla Sound and the Gulf. Section 3-2-306 lists bulkheads, seawalls, retaining walls, revetments, and similar erosion control structures among the development activities that need sign-off from the appropriate federal, state or local authority, plus an analysis by a qualified registered design professional demonstrating no harmful diversion of floodwaters or wave runup and wave reflection that would increase damage to adjacent buildings. That review sits on top of, not instead of, whatever Florida Building Code engineering the wall itself needs.

Because Charlotte County was directly in Hurricane Ian's 2022 path, floodplain administrators have been applying these sections heavily during post-storm rebuilds along the canal network and Charlotte Harbor shoreline, where property owners often want to raise or rebuild seawalls and retaining walls as part of storm repair. Permits for this work run through the Community Development Department's floodplain review, separate from any zoning fence-height review under a different article of the code.