Had a coworker who had to deal with this in CO. New next door owner resurveyed the property that was developed in the 60’s. Found the property line was off by 10 ft as the survey of the development was off. Had a fence at the original survey line, went to court and had to move it 10 ft closer to coworkers house as that was the correct location even though it had been at the original survey forever. So even though the property line had been at one location based on the original survey and maintained by the parties the new survey overruled it. The moral, know your states laws.
