REAL ESTATE FOR SALE BY THE UNITED STATES DEPARTMENT OF AGRICULTURE (USDA):
Real Estate for Sale by US Government Site #1
Site #2 http://www.homesales.gov/homesales/mainAction.do
IRS: Real & Personal Property Sales: http://www.ustreas.gov/auctions/irs/
Acquiring a VA guaranteed home foreclosed by states: http://www.ocwen.com/reo/residential/res_reofindbystate.cfm?
Homes and properties being sold by the different departments in US Government:
USDA Properties for sale all states
I hope it helps you out on your research
There is a buyers agent and a sellers agent and the buyers agent will be representing your best interest
But at the same token CJ posted a bunch of good resources however to purchase most government owned homes such as HUD homes you MUST use a realtor and one that is registered with the agency posessing a NAIDS ID number.
A FEW SHAMELESS PLUGS!