HUD listings – US Department of Housing and Urban Development
At this web site you can check out free HUD foreclosures, homes and other property listings in your area owned by different federal agencies: Single family homes and multifamily properties.
Foreclosure.com web site
This web site offers one of the largest USA database of foreclosures and other distressed properties. Free trial and paid membership, but you can start your research at no cost at their web site and see what foreclosed properties they have.