Orland Park requires a building permit for retaining walls over 4 feet in height (measured from base footing). Walls over 4 feet require engineered drawings stamped by a licensed Illinois structural engineer.
Orland Park's building code requires permits for retaining walls based on height. Walls 4 feet or less measured from the bottom of the footing typically require only a basic permit. Walls exceeding 4 feet, or walls supporting a surcharge (driveway, structure, or slope above), require engineered drawings stamped by a licensed Illinois professional engineer or structural engineer, plus full building permit review. Drainage behind the wall, proper geogrid reinforcement, and frost-depth footings are required for engineered walls. Walls near property lines must comply with setback rules. Walls over 30 inches in fall hazard areas may need guard railings. JULIE utility location is required before excavation. Contact Orland Park Building Division at (708) 403-6200.
Building a retaining wall without required permits or engineering may result in stop-work orders, mandatory removal, or costly retrofitting. Failed walls causing property damage create civil liability beyond village fines.
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