There is not one signing answer for every divorce sale. The recorded deed shows whose names appear in the property records, but an agreement or court order about the house may also affect what can happen next. A title company can confirm the documents and signatures needed for this closing; an Illinois family-law attorney can explain what an order means for your situation.
For a divorce property division, Illinois generally presumes property acquired by either spouse during the marriage is marital property, subject to exceptions. Courts divide marital property in just proportions based on the circumstances—not by an automatic half-and-half rule. That division rule does not, by itself, tell you who can sign a particular deed or mean the house has to be sold.
You can talk with us about the house while those documents are being reviewed. You do not have to settle every practical disagreement before the conversation starts.