Martin County, FL Fence Regulations: Material Restrictions (2026)

204 of the Martin County Land Development Regulations, in Article 3, Division 4 (Miscellaneous Development Standards), sets the county's general fence, wall and hedge standards for every zoning district. 3 is the material ban: no fence or wall may be built with broken glass, spikes, exposed nails, barbed wire, electrical elements or other hazardous material. The only carve-out applies to nonresidential parcels, where a fence or wall already at least six feet tall may add a one-foot wire extension; the code specifically treats that extension as added height, so the resulting seven-foot barrier becomes subject to the setback standards applicable in that zoning district.

The prohibition on barbed wire and electrified elements does not apply at all in agricultural areas, reflecting the county's separate livestock-fencing standards found in Sec. e for commercial stables. 2). Fences, walls or hedges six feet or less in height are exempt from the district's normal yard setback requirements, and on corner lots a fence or hedge inside the 25-foot sight-triangle at a street intersection is capped at 30 inches so drivers can see oncoming traffic. Martin County's Growth Management Department reviews fence applications against these standards during zoning review, and violations are handled through the county's code compliance program.