Dont' purchase a home from a bank, builder, seller, or listing agent unless you have your own realtor who works on your behalf.
You can call Steve Free, my Uncle, at 361.946.3045. He's lived in Corpus Christi all his life and has more than 30 years experience and can help you with all foreclosures, He knows everyone in town!
Are you local to the area? If not, you can have Steve preview them for you and assess whether they are worth moving forward on based on your criteria or not. Then, if you decide to make an offer, you have a 10 day option period where you can have a thorough inspection done which will tell you whether or not you want to continue with the purchase. He can go through all that with you.