You can IF:1) You fully disclose all not-readily or immediately obvous issues to any prospective buyers (and when in doubt, err on the side of disclosure);2) If you don't have or can't get a Certificate of Occupancy, the buyer agrees to take the property without one--this must be in a written agreement; 3) The buyer generally agrees in writing to an "as is" purchase.People are allowed to buy distressed or even condemned and uninhabitable properties to renovate them, flip them, or do a tear down--the key is there must be *full* disclosure and agreement in writing.