Boundary disputes are common in California real estate, in all cases- residential, commercial, and agricultural properties. Experienced Sacramento and Yolo real estate attorneys often see cases of adverse possession and prescriptive easement claims. Another theory that is occasionally used is the doctrine of boundary by agreement. In this scenario, when the parties are not sure of he location of the boundary, they agree on a location and live with it. Recently in San Luis Obispo County, the parties accepted a boundary location for over sixty years. But there never was an agreement to set it there, so the true boundary was the legal boundary set out in the deed.