I agree with Rob in that these are very time consuming and it will most likely be a waiting game if you are interested in the property. Many times, the banks are 6-9 months without homeowner payment before the actual process of foreclosure takes place, then it can take several more months before an actual sale or the home is given to a third party management group handling the bank's foreclosures. Some banks have a section on their main websites identitifying their foreclosures for sale. I know Bank of America does. You could attempt to go look in the public county records at the property address to find out who the lienholder is and then call that bank, ask for their Real Estate Asset or REO department and then give them the tax account number or address to see if they are even aware yet of the foreclosure. Banks that are so large sometimes have no clue for a long time. I do however know of several properties in Katy/ Richmond are that were builder foreclosures (brand new homes) and I know who those banks are and the contacts.
Good luck! Call me if you would like my help!