DuPage County Property Tax Appeal Deadlines & Due Dates for 2020

DuPage County Property Tax Appeal Deadlines for 2018Below is a listing of 2020 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
October 22
November 23
Bloomingdale
July 17
August 17
Downers Grove
November 10
December 14
Lisle
August 26
September 28
Milton
July 10
August 10
Naperville
June 30
July 31
Wayne
October 27
November 30
Winfield
October 29
November 30
York
August 19
September 21

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2019 DuPage County Property Tax Appeal Deadlines & Due Dates

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