St. Clair County's zoning code sets no cost-sharing rule for boundary fences. The Illinois Fence Act (765 ILCS 130) governs statewide: adjoining owners each maintain a just proportion of the division fence, and disputes go to town fence viewers.
The County Zoning Ordinance addresses fence height and placement, not who pays. Cost and maintenance of a shared boundary fence fall under the Illinois Fence Act, 765 ILCS 130/3: when two or more persons have adjoining lands, each must make and maintain a just proportion of the division fence between them. If owners disagree over their shares, the Act lets two local fence viewers mark and define each owner's portion. This state statute applies throughout St. Clair County.
This is a civil matter under the Fence Act; a neighbor who refuses their share can be compelled to pay, and fence viewers or a court may allocate costs. County zoning penalties do not apply to cost disputes.
Other ordinances people look up for this city. Green dot = verified primary-source excerpt.
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