This is a very technical matter only lawyers can really help. I think it goes into things like, who paid for the house, etc., how much was paid, whose name, can you track the payments, and you can only claim what you?ve put into. Perhaps if you have custody of the kid, you may receive an allowance for the kid until he?s 18 or depends on the settlement. Note that I?m only saying general things, because each situation is different. I can only say this, just get yourself a decent lawyer, hang on and good luck!