6 rules for unincorporated Champaign County, Illinois.
Verified from official government sources
Illinois sets no statewide residential fence-height cap, so each Champaign County city fixes it by zoning. In the City of Champaign, front-yard fences run 3 feet if solid or 6 feet if transparent, and side and rear fences up to 8 feet.
The City of Champaign requires no permit at all to install a residential fence; you build to the height and placement rules without one. Other Champaign County towns such as Urbana and Rantoul may ask for a simple zoning permit.
Illinois has no residential cost-sharing fence statute, so a shared fence between two homes is voluntary. But across Champaign County's vast farmland the Illinois Fence Act (765 ILCS 130) does bind adjoining rural owners to split a division fence.
765 ILCS 130/3 (Illinois Fence Act)
When 2 or more persons have lands adjoining, each of them shall make and maintain a just proportion of the division fence between them
Champaign County requires permits for retaining walls above a certain height, typically 4 feet. Engineering review may be required for taller walls.
Champaign County requires pool barriers meeting safety codes to prevent drowning. Fences must be at least 4 to 5 feet tall with self-closing, self-latching gates.
No Illinois statute limits residential fence materials, so wood, vinyl, chain-link, and wrought iron are all fine across Champaign County. The City of Champaign, however, prohibits barbed wire, electrified fences, and sharp spikes on residential fences.
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