awgee, correct me if I'm wrong, but unless you can prove the seller knew of the problem, even a cracked foundation would be you issue to fix and not the seller.
More importantly, anything that is material will end up being fought, so to be safe, basically assume all transactions are "as-is". The only difference with a REO is the REO won't give any disclaimers. A private party, you'll get the boiler plate disclaimers. Anything that is written on the disclaimers should be checked extremely diligently as it wil likely be Realtorspeak and euphemistic.