The 2020 Board of Review appeal session is now closed. If you have received a Mapping Change Notice or an Assessment Change Notice dated November 2 or later, you may appeal by the deadline date listed on the notice. Please read the Board of Review Rules prior to completing the application. The appeal with all evidence and supporting documentation must be received or postmarked by deadline date listed on the notice. Please contact the Chief County Assessment Office at 815-895-7120 with questions you may have. The Board of Review Rules with appeal application are posted below.