310 ILCS 5/32
Any person affected by a final administrative decision of the Illinois Housing Development Authority granting or refusing an application for increase in rentals pursuant to section 31 of this Act or by any other final administrative decision of the Illinois Housing Development Authority may have a judicial review thereof in the Circuit Court of the county in which the premises are situated. The provisions of the Administrative Review Law, as now or hereafter amended and the rules adopted pursuant thereto, shall apply to and govern all proceedings for the judicial review of final administrative decisions of the Illinois Housing Development Authority hereunder. The term "administrative decision" is defined as in Section 3-101 of the Code of Civil Procedure.
Except as otherwise provided by Section 26 of this Act, the provisions of this section with respect to judicial review shall apply to all final administrative decisions of the Illinois Housing Development Authority, which shall in all cases be based upon findings concerning the matter inquired into, and all parties affected by any of such orders or decisions shall have the rights herein granted.
When no review of a final administrative decision of the Illinois Housing Development Authority is sought as herein provided, parties affected by such order or decision shall be deemed to have waived the right to have the merits of the controversy reviewed by a court and there shall be no trial of the merits of any controversy in which such order or decision was made by any court to which application may be made to enforce the same or in any other judicial proceeding.
310 ILCS 5/32