Can I still appeal my Cook County assessment, and by when?

Enter the address or the 14-digit PIN above. The checker matches it to the parcel in the Cook County Assessor’s records and reads the township from that parcel record, then shows that township’s verified appeal windows.

It means no appeal window for that township has been verified here against the Assessor’s or Board of Review’s published calendar. Twelve of Cook County’s 38 townships are in that position on this page. It does not mean the window is closed, and we do not guess a date from another township — check the Assessor’s calendar, which is linked beside every result.

The Board of Review runs its own window, with its own opening and closing dates, after the Assessor’s. Where we have verified both for your township, both are listed with their dates; where only the Assessor’s is verified, the page says so and links the Board’s published dates.

Yes. Each row shows the date its window was last compared against our captured copy of the office’s published calendar, and offices do move dates after publishing them. Confirm with the office before you file; both calendars are linked above and beside every result.

This page is free, and filing an appeal with the Cook County Assessor or the Board of Review is free. The optional $59 Tax Appeal Evidence Packet is evidence you file yourself; we never file anything for anyone.

No. The address or PIN is matched in your browser against files this site publishes, and nothing is sent anywhere or stored.