There are worse things than having to sell your house. Sometimes we have to do whatever is necessary to improve our situation. I would advise doing whatever is necessary so that you are not dependent on his child support in order to live. A smaller, less expensive place, less eating out, no more cable TV, maybe a better paying job (or a second part-time job) for yourself, etc. I know it isn't easy because I had to do it myself, but I was sure glad I did when after my daughter was 13 years old, her dad just stopped paying any child support at all. We were still able to stay where we were living and I was able to keep paying my bills. The best thing you can do for yourself and your children is to not be dependent on anyone other than yourself.