Rancho Cucamonga follows California Civil Code 841, the Good Neighbor Fence Act. Adjoining owners share the reasonable cost of a shared boundary fence unless they agree otherwise.
California Civil Code section 841, the Good Neighbor Fence Act, presumes that adjoining landowners share equally in the reasonable cost of constructing, maintaining, or replacing a boundary fence between their parcels. A neighbor who wants to invoke cost-sharing must give 30 days written notice describing the need, proposed materials, estimated cost, and timing. The notice allows the other neighbor to dispute reasonableness or agree to contribute. If a neighbor refuses to pay their share, the initiating owner can still proceed but may need to pursue small-claims court for recovery. In Rancho Cucamonga, disputes often arise in master-planned communities where HOA approval dictates materials (stucco block with specific caps) and homeowners cannot simply erect any fence they prefer. The city does not mediate private fence disputes but Planning Division can confirm the height and setback rules. Property line surveys are strongly recommended before any new construction to avoid encroachment claims; the city does not certify property lines.
Contact your local code enforcement office for specific penalty information.
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