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

1(d), rewriting the state's list of work exempt from a building permit. Exception 2 on that list sets Costa Mesa's fence permit threshold: wood, steel, vinyl or iron fencing not over six feet in height, and stucco, concrete or masonry brick fencing not over three feet high, can go up without a permit. Any fence taller than those thresholds, or built from other materials, falls outside the exemption and needs a building permit reviewed by the city's building division before construction begins. The same amended exception list also exempts small above-ground prefabricated pools under 18 inches deep and 5,000 gallons, and low decks under 200 square feet and 30 inches high, the only other structures folded into this residential exemption alongside fences.

Beyond the building permit threshold, section 13-75(h) layers on a planning review requirement: any fence or wall built adjacent to a public street must be approved by the planning division for compatibility with the surrounding neighborhood, and on arterial streets bordering residential development it must meet the city's streetscape and median development standards. Security gates carry their own approval step in every zone, needing sign-off from the planning division together with the fire department and transportation division under section 13-75(o) before installation. Because these amendments took effect with Ordinance 2025-08 alongside the 2025 California Building Standards Code adoption, homeowners pulling a permit for a taller fence should expect plan check against the current 2025 edition.