If the property has already been foreclosed on by the bank, then the answer is zero - the house was taken back and the mortgage cancelled.
I list and sell REO (Real Estate Owned) properties for banks and I can tell you that foreclosure properties are sold "as is" and are put on the market at a discount based on their overall condition. Besides the shortfall from the mortgage, the banks also have about $30,000 in legal expenses to foreclose on a borrower so they reselling the property at a significant loss. But the total loss is not what the resale price is based on - it's the fair market value less a discount to get the property sold in less than 90 days.
Wayne Hare, e-PRO RealtorÂ®