Accessory Structures in Kendall County, IL (2026)
2 rules for unincorporated Kendall County, Illinois.
Verified from official government sources
ADU Rules
Unincorporated Kendall County does not allow a standalone rental accessory dwelling unit: Section 36-971(a)(6) permits only a non-paying guest house or guest rooms without kitchen facilities inside an accessory building, limited to occasional housing of the principal home's guests, and only on parcels of three acres or more in the A-1 or R-1 districts.
Accessory Guest House Rules, Kendall County
Significant RestrictionsKendall County Code § 36-971(a)(6)
(6)A non-paying guest house (without kitchen facilities) or rooms for guests within an accessory building provided such facilities are used for the occasional housing of guests of the occupants of the principal building and not for permanent occupancy by others. (Only permitted on parcels of three (3) acres or more in the A-1 Agricultural District or R-1 district.)
Shed & Carport Rules
A garden shed in unincorporated Kendall County can encroach into the side and rear yard setback, but not the front yard, under the Section 36-971(b)(2) obstruction table, and every accessory building must still clear at least five feet from side and rear property lines and ten feet from the main house unless attached.
Shed Setback and Height Rules, Kendall County
Some RestrictionsKendall County Code § 36-971(b)(2), (c)
(2)In the following table, an "X" indicates the obstruction is permitted: Permitted Obstruction Front Side Rear ... Sheds and storage buildings for garden equipment and household items as accessory to dwellings X X ... (c)Location. Except as otherwise provided for under this section, no part of any accessory building shall be located closer than five (5) feet from any side or rear property lin...
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