Cook County Property Tax Appeal Deadlines for 2018

Cook County Property Tax Assessment Calculator | KensingtonBelow is a listing of 2018 deadlines for appealing your property taxes in your township for both the Cook County Assessor and Board of Review.

  • 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.

Learn why appealing by yourself can cost you more money than using Kensington

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Cook County Township Cook County Assessor
Open for Filing
Cook County Assessor
Closed for Filing
Cook County Board of Review
Open for Filing
Cook County Board of Review
Closed for Filing
Barrington June 4 July 5 Early August Late August
Berwyn March 1 April 2 Late September Late October
Bloom September 28 October 28 Early January Late January
Bremen April 25 May 25 Late August Late September
Calumet May 30 July 2 Late October Late November
Cicero April 17 May 17 Early August Late August
Elk Grove March 22 April 23 Late September Late October
Evanston February 22 March 26 Early August Late August
Hanover October 1 October 31 Early January Late January
Hyde Park June 19 July 19 Mid-December Mid-January
Jefferson July 16 August 16 Mid-December Mid-January
Lake July 16 August 15 Mid-December Mid-January
Lake View May 7 June 7 Late August Late September
Lemont June 4 July 5 Late August Late September
Leyden June 28 July 30 Late October Late November
Lyons May 14 June 14 Late October Late November
Maine April 20 May 21 Late September Late October
New Trier March 19 April 19 Late August Late September
Niles September 21 October 21 Early January Late January
North Chicago September 14 October 14 Mid-December Mid-January
Northfield May 21 June 21 Mid-December Mid-January
Norwood Park February 9 March 12 Early August Late August
Oak Park March 1 April 2 Early August Late August
Orland August 2 September 1 Early December Early January
Palatine August 9 September 8 Early August Late August
Palos April 3 May 3 Late August Late September
Proviso July 20 August 19 Early December Early January
Rich September 7 October 7 Early January Late January
River Forest February 2 March 6 Early August Late August
Riverside January 31 March 2 Early August Late August
Rogers Park April 23 May 23 Early August Late August
Schaumburg August 23 September 22 Early January Late January
South Chicago October 5 November 4 Mid-December Mid-January
Stickney May 22 June 22 Late October Late November
Thornton August 16 September 15 Mid-December Mid-January
West Chicago May 14 June 14 Mid-November Mid-December
Wheeling July 26 August 25 Mid-November Mid-December
Worth June 21 July 23 Mid-November Mid-December

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