Retaining walls in Santa Monica over 4 ft in Seismic Design Category D, E, or F cannot be constructed of wood. Fence height on top of retaining walls is measured from lowest grade within 3-ft radius. Engineering required for significant walls.
Santa Monica regulates retaining walls to ensure structural safety and proper drainage. Walls up to 4 feet typically do not require a permit. Walls over 4 feet require a building permit and may need engineered plans stamped by a licensed professional engineer. Surcharge loads from driveways, structures, or slopes above the wall may lower the permit-free threshold. Drainage behind the wall is critical and must be addressed in design. Setback requirements apply to retaining walls near property lines.
Unpermitted walls: stop-work order, required engineering review, potential demolition. Fines $200 to $1,000.
Santa Monica, CA
Backyard chickens are allowed in Santa Monica with restrictions. Roosters are prohibited in residential areas due to noise. Livestock keeping is restricted b...
Santa Monica, CA
Dogs must be on a leash in all public areas in Santa Monica. Off-leash dogs are only permitted in designated dog parks. The city enforces leash laws through ...
Santa Monica, CA
Santa Monica does not impose breed-specific legislation. All dogs must be licensed per CA Food & Ag Code §30500+. Dangerous dog determinations are based on i...
Santa Monica, CA
Feeding wildlife in Santa Monica public parks and beaches is discouraged. The city's property maintenance code addresses nuisance conditions from wildlife at...
Santa Monica, CA
Portable fire pits on private property in Santa Monica must comply with South Coast AQMD regulations. Burns are prohibited on spare-the-air days. Beach fires...
Santa Monica, CA
Properties in fire hazard zones near Santa Monica must maintain defensible space per CA PRC §4291. Santa Monica itself is largely urban/coastal with limited ...
Side-by-side rule comparisons with other cities in Los Angeles County.
See how other cities in Los Angeles County handle retaining walls.
See how Santa Monica's retaining walls rules stack up against other locations.
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