Monroe County, FL Fence Regulations: Material Restrictions (2026)
Key Facts
- Allowed materials
- Brick, lumber, stone, metal, plaster, concrete, masonry
- Barbed/razor wire
- Prohibited except in Industrial (I) and Airport (AD) districts
- Chain-link
- Allowed for taller 5-6 ft fence exceptions
- Attachments
- Only 2 driveway lights per fence permitted
- Permit
- Required for all fences under § 114-13(h)
Summary
In the unincorporated Florida Keys (Monroe County), Land Development Code § 114-13(f) lets fences be built of brick, lumber, stone, metal, plaster, concrete or masonry, but bans barbed wire and razor wire county-wide. The only exception is the Industrial (I) and Airport (AD) zoning districts, where barbed and razor wire fencing remains allowed.
(f)Construction material. Fences may be constructed of natural or manmade materials, including, but not limited to, brick, lumber, stone, metal, plaster, concrete and masonry. Barbed wire and razor wire are prohibited except in the Industrial (I) and Airport (AD) Land Use (Zoning) Districts.
Full Breakdown
Section 114-13(f) gives property owners broad latitude on fence material: brick, lumber, stone, metal, plaster, concrete and masonry are all listed as acceptable, and the list is non-exclusive, so other natural or manmade materials qualify as long as the fence still meets the height, setback and sight-triangle rules of Section 114-13(a) and (b). The one flat prohibition is barbed wire and razor wire, which the county bars everywhere except the Industrial (I) and Airport (AD) Land Use (Zoning) Districts, where security fencing around industrial sites and airport property can still use it.
Chain-link is treated separately: it is one of the materials allowed to reach the taller five- and six-foot allowances in Section 114-13(a)(4), along with a four-foot solid fence topped with a one-foot lattice or louvre, and any non-chain-link material used to reach those taller heights needs Planning Director approval of the construction details. Attachments are otherwise restricted regardless of material: Section 114-13(g) bars anything attached to a fence except up to two driveway lights that stay within two feet of the fence's maximum allowed height and meet the outdoor lighting standards of Chapter 114, Article VI. Every fence, whatever material is chosen, still needs a building permit under Section 114-13(h) and must be kept in good repair under Section 114-13(j).
Violations & Fines
Installing barbed wire or razor wire on a fence outside the Industrial or Airport districts is a code violation subject to the county's building permit and code compliance process, since Section 114-13(f) prohibits it outright in every other zoning district. Building or altering a fence without the required permit under Section 114-13(h) is a separate violation that can trigger a stop-work order and removal or modification of the fence.
Frequently Asked Questions
Can I put up a barbed wire fence around my Keys property?
What materials can I use for a residential fence?
Can I hang lights or signs on my fence?
Sources & Official References
Other rules in Monroe County
Florida rules heatmap·Compare Monroe County to another location·View the Florida fence regulations overview
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