By Glen Scott
Rising inflation and changes in federal laws have led to deficit spending in Cook County. As a result, homeowners are strongly encouraged to review their reassessment property tax notice carefully. For detailed information on the reasons behind these changes and instructions on how to file an appeal, please visit the Cook County Assessor's website: https://www.cookcountyassessoril.gov.
Below are the current appeal deadlines as of late October 2025:
- Schaumburg: Appeals are open until November 17, 2025.
- Niles: Appeals are open until December 5, 2025.
- Hanover: Appeals will open in mid-November 2025.
- Other Townships: Deadlines for Norwood Park, Evanston, New Trier, Elk Grove, Maine, and Northfield will be provided soon.
- Other townships: The appeal deadlines for Norwood Park, Evanston, New Trier, Elk Grove, Maine, Northfield, Barrington, Leyden, Palatine, and Wheeling have passed
Keep in mind that your chances of winning a reassessment appeal typically range between 41% and 60%.