When can I file an appeal?

In Cook County, you will receive a “Notice of Proposed Assessed Valuation” in the mail when the Assessor’s Office reassesses your home every three years. This notice includes an estimate of the proposed property value, the proposed assessed valuation and a list of your property’s characteristics that are relevant to your property’s value.

Once you have received your “Notice of Proposed Assessed Valuation”, you have approximately 30 calendar days to file an appeal with the assessor’s office. The last date to file an appeal is printed on the top of your notice. You may also appeal your assessed valuation in any year between reassessments.  The deadlines are also available on the Assessor’s website.