Cook County Assessor vs. Board of Review
Both offices review property assessments, but they have separate filing systems, deadlines, and supporting-material workflows.
Check the evidence before choosing a filing path.
Enter a Cook County address or property PIN.
Free to check first. No credit card required.
Assessor SmartFile
Board complaint portal
Only while the property’s township is open for Assessor appeals.
During the Board’s official township filing period; pre-filing may be available.
Property corrections, market-value support, or lack-of-uniformity comparables.
Complaint notes plus comparable-property evidence and other supporting exhibits.
No. It is a separate review by the Assessor’s Office.
No. It is an independent review by the Board.
Which path should you use?
Start with the official calendars. If the Assessor window is open, SmartFile may be the immediate route. If that window is closed, check the Board’s current township status and pre-filing options. Do not assume a deadline from another township applies to your property.
Official filing destinations
Prepare the property comparison once, then use the correct path.
Deadlines and procedures can change. Confirm the current township status on the official Cook County website before filing.