Garden Grove requires building permits for retaining walls over 4 feet in height measured from the bottom of the footing to the top of the wall under the California Building Code adopted by the city. Walls exceeding 4 feet or supporting a surcharge require engineered plans. Retaining walls of any height that impound water or affect drainage also require permits.
Retaining walls in Garden Grove are regulated under the California Building Code as adopted in the city's municipal code. A building permit is required for retaining walls exceeding 4 feet in height measured from the bottom of the footing to the top of the wall. Walls supporting surcharges (such as a slope, driveway, or structure above) may require a permit regardless of height. Engineering calculations and plans stamped by a licensed civil or structural engineer are required for walls over 4 feet. All retaining walls must include proper drainage to prevent hydrostatic pressure buildup, typically through weep holes or drainage gravel behind the wall. Retaining walls on or near property lines must comply with setback requirements. The Community Development Department at (714) 741-5312 handles permit applications and plan review for retaining walls.
Building a retaining wall over 4 feet without a permit may result in stop-work orders, fines, and required removal or engineering retrofit. Contact Community Development at (714) 741-5312 for permit requirements.
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