Pima County, AZ Fence Regulations: Neighbor Fence Rules (2026)

Pima County does not regulate neighbor-to-neighbor fence disputes in unincorporated territory beyond general zoning code compliance. Arizona is not a community property fence state -- there is no statutory requirement for neighbors to split fence construction or maintenance costs. A property owner may build a fence entirely on their own property without the neighbor's consent, provided it meets county zoning height and setback requirements. Fences must be built on or inside the property line, not on the neighbor's property. A professional boundary survey is recommended before fence construction to avoid encroachment disputes. If a fence is built on a shared property line by mutual agreement, both parties share maintenance responsibility. Disputes over fence encroachment, damage, or shared costs are civil matters resolved through negotiation, mediation, or civil court. HOA CC&Rs in planned communities may establish fence standards including approved materials, colors, and heights that supersede county minimums. The Pima County Justice Court handles small claims disputes under $3,500 involving fence disagreements.