DuPage County Property Tax Appeal Deadlines & Due Dates for 2019

DuPage County Property Tax Appeal Deadlines for 2018Below is a listing of 2019 deadlines for appealing your DuPage County property taxes with the Supervisor of Assessments.

  • Dates in green have been announced (the window to appeal is now open)
  • Dates in red have passed (the window to appeal has closed)
  • Dates in gray are estimated based on previous years

The earliest you can submit a property tax appeal is the date listed as “Open for Filing” and no property tax appeal will be accepted after the “Closed for Filing” deadline. Click here if you don’t know which DuPage County township you live in.

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DuPage County Township DuPage County Assessor Open for Filing (Notice Date)
DuPage County Board of Review Closed for Filing (Final Complaint Filing)
Addison Mid-September Mid-October
Bloomingdale Late June Late July
Downers Grove Late November Late December
Lisle Late October Late November
Milton Mid-September Mid-October
Naperville Mid-October Mid-November
Wayne Mid-October Mid-November
Winfield Early October Early November
York Late November Late December

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2018 DuPage County Property Tax Appeal Deadlines & Due Dates