Des Plaines, IL Accessory Structures: Shed Rules (2026)

Residential sheds in Des Plaines are governed by Zoning Ordinance Section 12-8-1 (Accessory Uses and Structures) and the City's official Community and Economic Development handout 'Residential Accessory Structures (Shed, gazebo, or pergola).' Key requirements: a residential accessory structure cannot be located within 5 feet of any property line or on any easement; the maximum allowed area is 225 square feet; the structure cannot be taller than the principal home and the maximum height cannot exceed 15 feet; and the maximum number of accessory structures allowed on each property is two, including any detached garage or carport (so a property that already has a detached garage or carport may have only one additional accessory structure). Sheds may be placed on a minimum 4-inch-thick concrete slab or on a minimum 4-inch gravel base, and the shed must be anchored to that slab or base. Properties in the R-1 district cannot exceed 60% rear-yard lot coverage. A building permit is required: residents apply online through the Customer Self Service portal at desplainesil.gov/buildingpermits and select 'Accessory Structure - Shed, Gazebo, Pergola (Residential),' uploading a current Plat of Survey showing the structure's location, dimensions, and distance from all lot lines and other structures, plus construction plans (or manufacturer product details for a prefabricated shed). The shed permit fee is $50. Two inspections are required - a Pre-Pour/Base Inspection and a Final Inspection. Work is permitted 7 a.m. to 7 p.m. Monday through Saturday and 10 a.m. to 6 p.m. on Sunday, and applicants should call JULIE (1-800-892-0123) before digging.