We have had a shed built on the property line for over 7 years. We decided to take down the shed and put up a metal building in its place. Now the owner of the land wants us to move the building 5 feet away from the property line even though they never complained about the previous building. The building backs up to farmland and there is about 10 feet between our building and where they farm (the owner leases the land to farm). We cannot move the building because there is no room and it is concreted into the foundation. We tried to find the boundary markers with a metal detector but cannot. Is there any way I can win this?