Retaining walls over 4 feet measured from the bottom of the footing require a building permit with engineered plans in Victorville. Lower walls need no permit but must meet setback and drainage rules.
Under the California Building Code as adopted by Victorville, any retaining wall that exceeds 4 feet in height measured from the bottom of the footing to the top of the wall, or any retaining wall supporting a surcharge such as a driveway, sloped soil, or adjacent structure, requires a building permit and engineered plans stamped by a California-licensed civil or structural engineer. Walls at or below 4 feet without surcharge generally do not require a permit but still must meet Development Code setback standards and drainage rules that prevent runoff onto neighbor property. Victorville sits on the Mojave Desert alluvium, and shallow caliche, expansive clays in some subdivisions, and seasonal wash flooding demand proper drainage behind walls with weep holes and gravel backfill. Flood Zone X and Zone A/AE parcels near the Mojave River and Oro Grande Wash may need additional grading review. Permits integrate with any fence on top of the wall, which counts toward combined height for code purposes.
Contact your local code enforcement office for specific penalty information.
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