I remember looking at a farm property in NC. After walking the entire farm I noticed that someone had built a home on the wrong side of a creek on the farmland

I remember looking at a farm property in NC. After walking the entire farm I noticed that someone had built a home on the wrong side of a creek on the farmland, instead of the other side of the creek on the land they actually owned. I notified the sellers who after talking to the county found out I was correct. They ended up having to change the lot lines. We ended up not buying the property due to other reasons. It is truly amazing to me that things like this get past the banks and county inspectors. The lack of due diligence is astounding.