gas line

We had a Gas line drilled privately by a neighbor on their property the next property over and they finally came to get their port-a-toilets they left behind there from like 3 months ago, whew glad they're gone, could see them from my back patio door and not exactly a beautiful view, *l
Just hope they never bow their tops or my house might go with it, shutter to think. I wasn't too happy when I found out what the neighbor was intending to do, wonder if that decreased my property value?, hope not. If and when I sale I hope that's not a hinderance:(