Iowa City, IA Fence Regulations: Material Restrictions (2026)

Section 14-4C-2L requires a fence permit for any electric fence or barbed wire fence anywhere in the city, on top of the general height-triggered permits for tall fences and retaining walls. Subsection L3 then lays out the substantive restrictions. Barbed wire is defined precisely: twisted wires with barbs spaced at least 4 inches apart on each wire; anything looser than that description is banned outright, and concertina wire is prohibited without exception, livestock use included.

Outside the livestock exception, barbed wire fencing is confined to the commercial, industrial, and research zones, and even there the bottom strand has to sit at least 6 feet above grade, keeping it out of reach at ground level. Electric fences are banned in every zone in the city except for enclosing livestock tied to an allowed agricultural use. Where an electric fence is permitted for that livestock exception, the charge cannot exceed 25 milliamperes and the pulsating current cannot run faster than one-tenth of a second in a one-second cycle, and the fence must carry an approved testing laboratory's seal.

Both materials face an added sidewalk buffer: barbed wire and electric fences are prohibited within 5 feet of a public sidewalk, or within 4 feet of a street right of way line where no sidewalk yet exists. If a sidewalk is later built along that right of way, a fence installed under that exception has to be moved back within 2 months, and the property owner has to sign an agreement to that effect with the fence permit application.