Retaining walls over 4 feet high require a building permit with engineered plans in Oceanside. Walls in hillside areas or the coastal zone may require geotechnical review. Walls serving as fences have combined height limits.
Retaining walls in Oceanside are regulated under Chapter 6 (Building Code). Walls not exceeding 4 feet from footing bottom to wall top are generally permit-exempt if they do not support a surcharge. Walls over 4 feet require a building permit with engineered plans by a licensed engineer. Combination retaining wall/fence structures have combined height measured from the lower grade side. Hillside areas may require geotechnical investigation. Walls in the Coastal Zone may need additional review. Adequate drainage behind retaining walls is required to prevent hydrostatic pressure buildup. The Building Division at (760) 435-3940 handles retaining wall permits.
Unpermitted retaining walls are subject to code enforcement. Retroactive engineering and permits may be required.
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Side-by-side rule comparisons with other cities in San Diego County.
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