NOT LIVE YET · IL
Cook County property tax appeals
Appeal Season is a property tax appeal co-pilot. We are live across Florida and expanding to high-tax counties like Cook County. We are not there yet, so we cannot check a Illinois assessment today. Leave your email and we will tell you the day we cover Cook County, and nothing else.
Cook County is on our near-term roadmap.
Cook CountyCOMING SOON
HOW THE DEADLINE WORKS HERE
Cook County assessment appeals open township by township. Each township has its own filing window, roughly 30 days, that opens when its reassessment notices mail.
Source: official schedule · checked 2026-07-07. We publish the exact date the day we are live here.
When we launch in Cook County, you will look up your property by its PIN (property index number).