Also, you can search the country sheriff website. You'll want to look under "civil process" or "foreclosure" you should be able to search on the site specific address, and you'll be able to see when they got foreclosed or where they are in the foreclosure status.
If they are listed they can be found on either a bank's or third party servicer's website who is handling the asset or a good Realtor can help you find out.
Hope that helps.
if you are interested in bank owned homes, please see my blog for tips and advice in looking for them and making an offer to get you the best price and terms.