Below are some example photos of residential classification codes. Beneath the picture(s) you should write the address, Permanent Index Numbers and assessed value of property shown.For example, if you bought a residential property in Cook County in 2022, your 2023 homeowners exemption form was due in April of 2023. Method 1: Go to the CCOA Site for APPEAL SEARCH. After you enter your PIN, this will get you a listing of properties on and around your block. Below are frequently asked questions for landlords to help navigate the Just Housing Amendment to the Human Rights Ordinance. Appeals must be filed on the official Board of Review Complaint Form. A BOR Complaint Number is proof that an appeal has been filed at the BOR. Remember, compare your property to properties located in the same neighborhood and within the same classification code. Join us for a workshop to learn about the Cook County Assessor's Office and homeowner exemptions.