BTW I'm not putting in a skylight to get more rent, I'm opening the drywall ceiling to reveal an existing skylight so I can call the room a bedroom.

And that's only what your inspection revealed.  

The Home Inspections/ contingencies revealed a number of problems so we renegotiated the selling price to reflect the new added cost.

Also, revealed details of contents could have lead this person to share info with someone else, would may have took the opportunity to break into the home.Obviously, the buyer is extremely upset as well as my family because our personal business was shared with people that was not a party to the transaction, which should violate some code conduct.My question is: can someone point me to a standard of conduct or ethical information that would explain the recourse or ramifications for this type of activity by this appraiser.I’ve searched high and low, but I haven’t found anything.

Title work did not reveal anything. 

Background checks reveal several felony and misdemeanor charges, all from one date in his home town.

A quick Google reveals that both MN and ND have some sort of TDR or conservation easement programs, although I couldn't find a home page for either.

Take the total ARV, subtract rough estimate of fix up and all recorded liens.Get a copy of the decedent's death certificate which may reveal a next of kin.

Due diligence revealed it sold for 28k in 2008.

My assumption is if he tries to file a complaint against me then it gets revealed that he didn't do things by the books either.