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If you and your father don't want to save the property, then deed in lieu of foreclosure is a good option to get rid of the property. This will not only help you in selling off the property but you won't be liable for paying off the deficient balance resulting from the sale of the property. However, if you and your father wants to save the property from foreclosure, then he may apply for a reverse mortgage and check out if the lender can help him with that. Or else, he may even apply for a loan modification in order to save the property from foreclosure.