Kendall County, IL Accessory Structures: Shed & Carport Rules (2026)

Kendall County's accessory-structure table in Section 36-971(b)(2) singles out sheds and storage buildings for garden equipment and household items as accessory to dwellings as a permitted obstruction in the side and rear yards only, marking an X in those two columns but leaving the front-yard column blank, meaning a shed cannot be placed in a required front setback anywhere in the County. That table sits inside the section's general obstruction rules, which bar placing any structure within a recorded easement, require staying clear of drainage impacts, and set a default five-foot minimum from a property line for any obstruction not given a smaller number in the table itself.

Section 36-971(c) then supplies the baseline setback for the shed as a building rather than as an obstruction: no part of any accessory building shall be located closer than five feet from any side or rear property line, nor closer than ten feet to any main buildings, unless attached and made a part of such main building. In the A-1 Agricultural District that setback tightens to ten feet from all property lines dividing separately owned lots, and a shed that is the first building on an A-1 lot must instead meet full principal-building setbacks under Section 36-285(2).

Height is capped separately by the Section 36-971(e) table: an accessory building in a required rear yard tops out at 25 feet in R-1, R-2, RPD-1 or RPD-2, 20 feet in R-3 or RPD-3, 15 feet in other residential districts, and 25 feet in commercial or industrial districts, with no limit in A-1.