Do any of you all have any experience with this. My son has building lot in a subdivision that on the lot next door, a contractor has moved the property line marker at the edge of the street in a ditch ( a steel rod ) about 10 feet and put in a additional length of culvert. So now his driveway goes onto our lot. I think this is easy to prove with a survey, but my question is if he doesn't want to fix this, how do you force him to fix it. We've called him and so far no response. The local zoning dept is no help. Thanks in advance.