Retaining walls in El Cajon under 4 feet in height (measured from bottom of footing) are generally exempt from building permits. Walls over 4 feet require a building permit and engineered plans. Multiple tiered walls may be considered a single wall for height calculations.
Retaining walls in El Cajon are regulated under the California Building Code as adopted in ECMC Title 15. Retaining walls not retaining a slope and not exceeding 4 feet in height measured from the bottom of the footing are generally exempt from building permit requirements. Walls exceeding 4 feet require a building permit and may require engineered plans prepared by a licensed civil engineer. Walls that retain a slope or surcharge (such as a driveway or structure above) may require a permit regardless of height. Multiple tiered retaining walls in close proximity may be evaluated as a single structure for height and permit purposes. Drainage behind retaining walls must be addressed with weep holes or a drainage system to prevent hydrostatic pressure buildup. Retaining walls that also serve as fence foundations must comply with both retaining wall and fence height requirements.
Building a retaining wall over 4 feet without a permit is a code violation. The city may require removal, reconstruction, or retroactive engineering and permitting. Failing retaining walls that create a hazard may be declared a public nuisance.
El Cajon, CA
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El Cajon, CA
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El Cajon, CA
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