Probably not. What was your understanding with your FIL regarding the payments you made? Was it a loan? Was it payment in lieu of rent? More facts are needed. There is a theoretical claim against the estate. But this sounds really iffy to me, absent some concrete loan agreement or documentation of the agreement that you be repaid.
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I agree with Attorney Frederick. It appears that your father-in-law allowed you to live in the house in exchange for the payment of his expenses as a form of rent. With that said, please consult with an experienced probate attorney to see if a claim against your father-in-law's estate could prove fruitful. Good luck to you.
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I agree with both of my colleagues. It does not sound like the daughter or the estate owes you anything because you stayed in the house for the three years you paid expenses. Your remedy, if any, would be to file a creditor's claim, but I would consult with a probate attorney before deciding whether to pursue reimbursement.
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