West Allis, WI Fence Regulations: Retaining Walls (2026)

Exterior Site Improvements. No permit is required for retaining walls less than five (5) feet in height or walks, driveways, stoops, outdoor patio areas and/or other similar improvements constructed of concrete, brick, or other hard surfaces within three (3) feet of grade. Window Replacement and Awnings. For residential one- or two-family use properties, no permit is required to replace existing windows of the same dimension in the original opening, and no permit is required for awnings supported by an exterior wall. Siding and Roofing. For residential one- and two-family use properties, no permit is required to install or replace nonstructural siding or roofing materials, including underlayment, on an existing dwelling or accessory building or structure. Decks. No permit is required for decks less than twenty-five (25) square feet that are within four (4) feet of grade. No permit is required for replacing deck boards, stairs, guards or handrails on an existing deck. Other Work. No permit is required for painting, replacing tiling, replacing flooring, replacing cabinetry, or other similar work. Code Compliance. All work, including work exempted from permit requirements, shall conform to all applicable construction code requirements unless otherwise stated. An Inspector may require a permit to be issued for repairs ordered for code compliance.