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