Wichita, KS Fence Regulations: Retaining Walls (2026)

Wichita has adopted the International Residential Code and International Building Code with local amendments through the Office of Central Inspection (OCI). Under these codes, any retaining wall exceeding 4 feet measured from the bottom of the footing to the top of the wall requires a building permit and engineered plans. Walls supporting surcharge loads (driveways, structures, or sloped soil above the wall) require engineering regardless of height. Tiered walls where the horizontal separation is less than twice the height of the lower wall are typically combined as one structure for permitting purposes. Plans must address soil bearing capacity, reinforcement, drainage provisions (gravel backfill, weep holes, or perimeter drain), and global stability. Walls placed in drainage easements require approval from Public Works and cannot impede stormwater flow. Property owners must call Kansas One Call (811) before excavation. Inspections are required at footing and final stages. Improperly drained walls in Wichita's expansive clay soils frequently fail from hydrostatic pressure, so the OCI strongly recommends drain rock and a perforated pipe behind every wall over 2 feet. Walls on property lines should respect lateral support rights of adjoining owners under Kansas common law.