Kendall County, IL Fence Regulations: Height Limits (2026)

Kendall County Code Section 36-980(a) sets the fence height rules for the unincorporated county outside the A-1 Agricultural District, which Subsection (1) excludes from every height and type restriction in the section entirely. Subsection (2) limits a front yard, defined as the area between the road right-of-way line and the nearest line of the building, to decorative or open fences no taller than four feet. Subsection (3)a governs solid and semi-solid fences in residential districts: they can run up to six feet in the required side and rear yards with the finished side facing out, but cannot extend into a required front or corner side yard, and the limit rises to eight feet where a residential lot's side or rear line abuts a business or manufacturing district.

Subsection (3)b lets business and manufacturing districts build solid or semi-solid fences up to eight feet along the lot line in side and rear yards, again keeping the finished side outward and staying clear of front and corner side yards. Subsection (4) allows any fence to sit right up to a property line as long as it does not encroach into a right-of-way. Subsection (5) folds in the county's separate corner-clearance rule at Section 36-970(e), which bars any obstruction between two and ten feet high within a forty-foot sight triangle at street intersections, with a tighter thirty-inch cap on plantings and structures within twenty-five feet of the corner.

Subsection (b) can also force a property owner to build a six-foot fence or wall around any area the Board of Appeals finds dangerous to public health.