Milpitas, CA Fence Regulations: Permit Requirements (2026)

Milpitas separates building-permit requirements from zoning-height rules. Per the city's Building and Safety FAQ, which applies the California Building Code (CBC) and California Residential Code (CRC), a building permit is not required for 'Fences not over 7 feet' in height. The same exemption list states that retaining walls 'not over 4 feet in height measured from the bottom of the footing to the top of the wall' do not need a permit unless the wall supports a surcharge (additional load) or impounds liquids. A fence taller than seven feet, or a taller retaining wall, requires a building permit from Building and Safety. Importantly, being permit-exempt does not mean unregulated: the Zoning Ordinance expressly notes in Section C.2.040 that its standards 'apply to all fences and walls, including those not requiring a Building Permit.' So even a five-foot fence must still meet the Section C.2.040 height and placement limits and the corner-lot visibility-triangle rule. In residential zones, raising a rear or side fence to eight feet requires written consent of adjoining property owners and is directed to Milpitas Municipal Code Title II (Building Regulations) for permit requirements. Property owners should confirm current requirements with the Building and Safety Division before installing taller or load-bearing fences and walls.