Legal Question in Family Law in Illinois

How is title held? Assuming you have a mortgage,how has it been paid? These facts effect the response. If it is in both your names, the money was in effect gifted to the marriage. The law presumes anything bought during a marriage is marital property. It might be argued, which a chance of success, that if all the funds from the three flat are used to operate the building and no marital funds were used that it was and is non-marital property, but that is an expensive and difficult to prove position to take.