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 Early March Early April Early August Late August
Berwyn Late April Late May Late September Late October
Bloom Mid-September Mid-October Early January Late January
Bremen Mid-April Mid-May Late August Late September
Calumet Late June Late July Late October Late November
Cicero Late March Late April Early August Late August
Elk Grove Late April Late May Late September Late October
Evanston Late February Late March Early August Late August
Hanover Early September Early October Early January Late January
Hyde Park Mid-July Mid-August Mid-December Mid-January
Jefferson Late July Late August Mid-December Mid-January
Lake Early September Early October Mid-December Mid-January
Lake View Early April Early May Late August Late September
Lemont Early May Early June Late August Late September
Leyden Mid-June Mid-July Late October Late November
Lyons Late May Late June Late October Late November
Maine Mid-May Mid-June Late September Late October
New Trier Early March Early April Late August Late September
Niles Mid-September Mid-October Early January Late January
North Chicago Mid-September Mid-October Mid-December Mid-January
Northfield Early August Early September Mid-December Mid-January
Norwood Park Early March Early April Early August Late August
Oak Park Early March Early April Early August Late August
Orland Late July Late August Early December Early January
Palatine Late March Late April Early August Late August
Palos Early April Early May Late August Late September
Proviso Mid-July Mid-August Early December Early January
Rich Early September Early October Early January Late January
River Forest Early February Early March Early August Late August
Riverside Early February Early March Early August Late August
Rogers Park Late January Late February Early August Late August
Schaumburg Mid-August Mid-September Early January Late January
South Chicago Mid-September Mid-October Mid-December Mid-January
Stickney Early June Early July Late October Late November
Thornton Mid-August Mid-September Mid-December Mid-January
West Chicago Late May Late June Mid-November Mid-December
Wheeling Early July Early August Mid-November Mid-December
Worth Late June Late July Mid-November Mid-December

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