My spouse & I legally separated 10 years ago. All matters concerning child support, education, residence status have all been honored except for one thing. My ex bought me out of the house but still owed me $30k (+ 3% per annum) to be paid over the 10 years or in a balloon payment at the date 10 years from the signing. It's now that time, the house is for sale (no bites) and she says she has no money to pay me. What do I have to do to get the money owed me?
Criminal Defense Attorney
Hire an experienced matrimonial attorney who can bring an enforcement proceeding in the appropriate Supreme Court. Just because she can't sell the house for as much as she wants, so long as it can sell for enough to pay off the outstanding mortgage and the amount she owes you she is required to do so. You should not fail to pay your child support or deduct the amount she owes you from your payments. Doing that would put you in jeopardy of being brought into court for failing to pay your child support and having your driver's license suspended. Your obligation to pay child support is independent of her obligation to pay you.
Divorce / Separation Lawyer
You need to file a motion in Court forcing the sale. She is probably being difficult and not really trying to sell the house
Child Custody Lawyer
You really should speak with an attorney to discuss what your best options are - in some instances an enforcement motion may be necessary but, if your wife has other assets, you may be able to have your attorney issue an income execution and obtain the sums due to you that way. Whatever route you take, do not withhold child support - that is a court order and failing to follow it is contempt of court.
This advice is not meant to create an attorney-client relationship and is a general answer to the question posed.