Should you look at your Cook County property assessment this year?
This tool shows you how your home's assessed value compares to similar homes nearby, using the county's own public records. It presents the data. You decide what, if anything, to do with it. It does not tell you whether to appeal, and it cannot file anything for you.
Check your address
Enter a street address (partial is fine) or a 14-digit PIN. Results are free and shown immediately. No account, no email, nothing to sign up for.
Is this your township's reassessment year?
Cook County reassesses one third of its townships each year on a three-year rotation. In county data for 2023 and 2024, appeals filed in a township's reassessment year succeeded at roughly double the rate of other years.
Find your township
South/West townships — reassessed this year (2026)
City townships — next reassessed 2027
North townships — next reassessed 2028