Retaining walls in Oxnard over 4 feet in height require a building permit and engineered plans. Walls must comply with California Building Code structural requirements and may require soils engineering reports for stability.
Under the California Building Code as adopted by Oxnard, retaining walls over 4 feet in height (measured from the bottom of the footing to the top of the wall) require a building permit with engineered structural plans. Walls retaining a surcharge or supporting a slope may require permits at lower heights. A soils engineering report is typically required for walls over 4 feet or in areas with expansive clay soils common in the Oxnard Plain. Drainage behind retaining walls is mandatory to prevent hydrostatic pressure buildup. Setback requirements apply based on wall height and zoning district. Combined fence-and-retaining-wall structures have cumulative height limits.
Unpermitted retaining walls are subject to stop-work orders, permit requirements after the fact with double fees, or demolition orders. Failing walls creating safety hazards may be red-tagged.
Oxnard, CA
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Oxnard, CA
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Oxnard, CA
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Oxnard, CA
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Oxnard, CA
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Oxnard, CA
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Side-by-side rule comparisons with other cities in Ventura County.
See how other cities in Ventura County handle retaining walls.
See how Oxnard's retaining walls rules stack up against other locations.
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