Cook County Property Tax Appeal Deadlines & Due Dates 2019

Cook County Property Tax Assessment Calculator | KensingtonBelow is a 2019 listing of 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* Early June Early July Early September Early October
Berwyn Early March Early April Early August Late August
Bloom Early September Early October Early December Early January
Bremen Late April Late May Late August Mid-September
Calumet Late May Early July Early September Early October
Cicero Mid-April Mid-May Early August Late August
Elk Grove* Mid-April Mid-May Early August Late August
Evanston* Mid-March Mid-April Early August Late August
Hanover* Late September Late October Late November Late December
Hyde Park Mid-June Mid-July Mid-October Mid-November
Jefferson Mid-July Mid-August Early November Early December
Lake Late July Late August Late November Late December
Lake View Early May Early June Mid-October Mid-November
Lemont Early June Early July Early September Early October
Leyden* Mid-June Mid-July Mid-October Mid-November
Lyons Mid-May Mid-June Early September Early October
Maine* Early May Early June Early August Late August
New Trier* Early April Early May Early August Late August
Niles* Early September Early October Late November Late December
North Chicago Early September Early October Early December Early January
Northfield* Late May Late June Early September Early October
Norwood Park* Late February Late March Early August Late August
Oak Park Early March Early April Early August Late August
Orland Mid-July Mid-August Early November Early December
Palatine* Late July Late August Late November Late December
Palos Early April Early May Early August Late August
Proviso Mid-July Mid-August Early November Early December
Rich Early September Early October Late November Late December
River Forest February 6 March 8 Early August Late August
Riverside February 5 March 7 Early August Late August
Rogers Park February 15 March 18 Mid-August Mid-September
Schaumburg* Mid-August Mid-September Late November Late December
South Chicago Mid-September Mid-October Early December Early January
Stickney Late May Late June Early September Early October
Thornton Early August Early September Late November Late December
West Chicago Late August Late September Early December Early January
Wheeling* Early July Early August Early November Early December
Worth Late June Late July Mid-October Mid-November

* North suburbs will be fully re-assessed in 2019 as part of the triennial schedule

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2018 Cook County Property Tax Appeal Deadlines & Due Dates