Los Angeles requires a building permit for a masonry or concrete fence over 3 feet 6 inches and for a fence of another material over 10 feet; a swimming-pool barrier requires a permit regardless of those exemptions.
Every fence must still comply with zoning height, yard, visibility, hillside, retaining-wall, public-right-of-way, and overlay rules even when no building permit is required.
What this tells youComputed rule answer
How precise this isComputed rule answer
Official data checkedLADBS fence permit guidance
Next stepCheck official fence rules with height, location, and property constraints.
Masonry or concretePermit required over 3 ft 6 in
Other materialPermit required over 10 ft
Always separateSwimming-pool barriers, retaining walls, zoning, visibility, public-way, and overlay review