I am looking at a home that is for sale that has a septic tank in it. I'm told it works but the previous owner never got a permit for it so at some point the county may come back and ask to dig it up and inspect it. Can anyone give me a round about cost of what such an endeavor would cost? I would want to consider this if I was to make an offer but down even have a clue. Also what would it cost to dig it up and to replace it with a new one (worst case scenario)? Thanks.