La Mesa, CA Fence Regulations: Fence Permit Requirements (2026)

La Mesa measures fence and wall height from the midpoint between the finished grades on both sides, checked in sections no longer than ten feet, so a sloped lot cannot hide extra height in a single long run. A freestanding fence built on top of a retaining wall is measured as one combined structure, not two separate heights. Inside the minimum front setback the cap is four feet; everywhere else on a single-family or multi-family lot the cap is six feet. A property owner who wants taller fencing must apply for a special permit, which the code allows only where topographic or other site conditions make a standard-height fence ineffective for privacy screening.

That discretion has one hard limit: no fence or wall inside an area required for sight-distance visibility at a driveway, alley or street intersection may exceed the height the chapter sets for that triangle, regardless of any permit granted elsewhere on the property. A separate carve-out lets corner lots that share a common rear property line with another corner lot build fences up to six feet inside the reduced front setback area, again capped by the sight-distance rule in Section 24.05.030(N). Fences approved to screen recreational-vehicle parking areas, or required as a condition of a site development plan to reduce impacts on adjoining property, are permitted outside the standard height math under the same subsection.