10/23/2025
The potential for confusion during the next few months is high, with a CCAO appeal, quickly followed by a BOR appeal, and the mailing of the 2024 Second Installment tax bill sometime in between. We hope to mitigate some of the confusion with this check list.
Please remember that the actual tax bill is not appealable.
REASSESSMENT LETTERS: The County will mail the 2025 Notice of Proposed Reassessment on Wednesday, October 22, 2025.
FILING APPEALS: We have plenty of time to get an appeal filed for everyone but please help us out by refraining from phone calls and especially by absolutely avoiding multiple filings. Multiple filings have become a significant issue. In an effort to keep the taxpayers informed we send follow-up/reminder emails. When we send these follow up emails some taxpayers re-submit an additional appeal request. This will cause both filings to be deleted and NOT FILED.
2025 CCAO APPEAL DATES:
10/22/2025 Cook County Reassessment notices are mailed to taxpayers.
11/17/2025 Last day to file a 2025 CCAO appeal request with the Niles Township Assessor Office
12/05/2025 Last day to file an appeal directly with the Cook County Assessor Office
TAX BILLS:
My best guess is that the bills could either be mailed “soon” or, months from now. I do not have enough information to support even a wild guess as to a mail date.
When your tax bill arrives and if you did NOT receive the exemptions that you are entitled/applied to, make an APPOINTMENT through our website AFTER 12/5/2025 to request assistance filing for exemptions.
EXEMPTIONS: We can not help process exemption certificate of errors during appeals. If you need immediate help filing exemptions on your current bill, make an APPOINTMENT through our website. The County will open the window for regular exemption filing in late February/March 2026.
APPOINTMENTS: Our office is by appointments only. Please make an APPOINTMENT through our website. We are available to assist during office hours but appointment requests allows us to block time for you and let you know what documents to bring.
EMAIL LIST: We recommend that you encourage relatives and neighbors to join the email notifications list. This is going to be the best source for property tax information. Join our email list today!
Niles Township Assessor Email Forms