No, you don't get to bill your spouse for payments made out of the marital estate. If the home is paid off, such that you have $4,000 in equity, she may be entitled to half, and she also may be able to claim a share of any deduction for a capital loss. The details of how the home was purchased and titled, and how payments and maintenance were funded during the marriage, can play a role as to whether you could plausibly claim the home to be separate premarital property. I'm not optimistic based on what you've told us, but you will want to discuss the details with your divorce lawyer.