The more "fly-by nighters" there are, the better it will be to recognize the efficient well oiled machines.

However, he's a snake oil salesman. 

My husband has a job he works in the oil field so won’t be working in the state for a while. 

A broker/agent with NO INTEGRITY will put their needs FIRST ahead of protecting a client and tell them anything to get that commission check and make a deal happen.That is NOT the way to run a long term business with credibility.How you make sure you are not liable it to DISCLOSE EVERYTHING you know and sell AS-IS.Fill out the sellers disclosure in full truthfully and honestly.AS-IS does not mean you are not disclosing known material facts as a seller.It simply means you are not going to fix them and it's up to the buyer to investigate further.By the way even if you do everything right and disclose the buyer can still sue you later.Buyers can sue for anything but it doesn't mean they will win but just sue you fishing for money once they realize they made a mistake.Usually the judge hearing the lawsuit will see that you fully disclosed and the buyer did not want to spend more money doing the proper inspections before closing.The judge will then dismiss the case usually because the buyer did not perform fully "their right to their own inquiry" before closing on the property.Where you get into trouble is the question you are asking now about I know something and fixed it but my agents says I don't have to disclose it.I can tell you that is absolutely wrong.Fixing a foundation crack and changing a rooms use known for water intrusion is an adverse material fact that you MUST disclose.Many sellers do not want to disclose items because they now it will reduce the sales price.The seller will pay for it now with a lower price or pay later with a settled lawsuit with claims much larger than the lower selling price.The seller usually buying a lemon house themselves try to pass problems off the unsuspecting or not knowing buyers.You as a seller just have to learn from this experience and make sure what you buy going forward is thoroughly inspected.No legal advice.

I used to work in commercial real estate several years ago before I moved into the oil and gas career.  

I have viewed many houses with oil tanks no longer in use that were capped and they weren't a problem.

I would love granite but lite color will show stains from oils left on the surface.

I had my plumber fix all the burst pipes and when he repaired the pipe close to the boiler water supply he discovered oil boiler had developed cracks on it spewing water onto the floor.Is this covered by homeowners insurance?

What this dude is hoping for is a pie in the sky cashout in a hot economy, a green rich kid with WAY too much money at the peak of the market to call him, and maybe put up family money or mortgage daddy's business to buy the owner's portfolio of rotting lemons.

You are far enough away from North Dakota that you are less likely to value or rental rates drop from the oil bust.ConsYou have a lot of equity sitting the property you can use elsewhere.