That bit of information was a legitimate deal breaker since it was a "material fact" that the seller or realtor should have known and disclosed, even in an "as is" sale.
These homes are referred to as comparables or comps. Be honest and sympathetic to their needs and let them know if you cannot help them.
However, in a seller's market, as we had prior to 2004-2005, a buyer would most likely not be able to use this contingency as easily because of fewer homes on the market and more buyers for the seller to chose from. Image Credits. How long have you been practicing.