They gave a small amount of money to the previous owners for the use. We had not knowledge of this. He is a landscaper and built the retaining wall and fence for us. When we questioned if our land went over further he became upset and said no. We got a survey and when the markers were put on his side of the fence he removed them. He has now planted trees and buildings on the fence claiming it is grandfathered in. He also expanded his pool within two feet of the fence. Can we take our property back?