Monroe County, FL Fence Regulations: Height Limits (2026)

Section 114-13(a) sets the baseline fence and wall height at six feet, measured from the highest finished elevation next to the fence, but layers on lower limits near roads and setbacks. S. 1 or an arterial road, or any nonresidential property, is held to three feet inside the clear sight triangle defined in Section 114-201; the same three-foot cap applies at the intersection of any two public roads, matching FDOT and AASHTO sightline standards where those are stricter. A single-family lot on a local road can exceed three feet inside the sight triangle only if the fence sits at least ten feet back from the edge of pavement, sidewalk or bike path, measured from the cleared right-of-way edge on unpaved streets.

Within a front-yard setback, or a side-yard setback that overlaps one, the general cap drops to four feet under Chapter 131, unless the fence qualifies for one of the listed exceptions: chain-link or a four-foot solid fence topped with a one-foot lattice or louvre, up to five feet, with non-chain-link materials needing Planning Director approval; a driveway gate up to twelve feet wide and six feet tall; or, in the Airport, Commercial, Industrial, Maritime Industries, Mixed Use, RV and similar zoning districts, a full six-foot fence outside the sight triangle.

In the Improved Subdivision, Native Area, Sparsely Settled and Suburban Residential districts, a six-foot fence is allowed if no other residentially developed property sits within 200 feet. Athletic fences can reach twelve feet if built of chain-link or similarly transparent material, and fences around high-voltage substations, pump stations or wastewater plants can go as high as recognized industry codes allow.