Legal Question in Real Estate Law in Illinois

You might try reposting this in the bankruptcy law section to get more information. Since your brother owned an interest in the house, when he filed bankruptcy, his portion of the house became the property of the bankruptcy estate. You will need to get the trustee to agree to the sale in order to sell it. If you can show there is no equity, this will be an easier task.

On another topic: If in fact you and your brother are both in title, and you were both in title when you mortgaged the property, and only you signed the mortgage, you might have an interesting defense to any foreclosure. You should have an attorney review the loan documents with this in mind.