Cook County Property Tax Appeal Deadlines & Due Dates 2020
Below is a 2020 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
Open for Filing
Cook County Assessor
Closed for Filing
Closed for Filing
Cook County Board of Review
Open for Filing
Open for Filing
Cook County Board of Review
Closed for Filing
Closed for Filing
Barrington
March 13
May 1
November 2
December 1
Berwyn*
May 18
June 23
October 26
November 24
Bloom*
October 8
November 12
December 16
January 14
Bremen*
September 16
October 22
December 07
January 05
Calumet*
April 20
May 26
September 14
October 13
Cicero*
July 24
August 31
November 16
December 15
Elk Grove
June 26
August 4
November 2
December 1
Evanston
February 19
May 1
October 14
November 12
Hanover
September 9
October 15
December 16
January 14
Hyde Park
August 20
September 24
December 07
January 05
Jefferson
August 28
October 2
December 05
January 05
Lake
September 23
October 29
December 23
January 21
Lake View
July 1
August 5
November 16
December 15
Lemont*
May 27
July 2
October 26
November 24
Leyden
June 23
July 29
November 2
December 1
Lyons*
July 10
August 14
November 16
December 15
Maine
July 21
August 26
November 16
December 15
New Trier
March 5
May 1
November 2
December 1
Niles
September 24
October 30
December 16
January 14
North Chicago
September 25
November 2
December 23
January 21
Northfield
September 15
October 21
December 16
January 14
Norwood Park
February 20
May 1
September 28
October 27
Oak Park*
February 27
May 1
October 13
November 1
Orland*
July 22
August 27
November 16
December 15
Palatine
May 5
June 10
October 14
November 12
Palos*
March 13
May 1
September 14
October 13
Proviso*
August 31
October 5
December 07
January 05
Rich*
September 24
October 30
December 16
January 14
River Forest*
February 7
May 1
October 13
November 1
Riverside*
February 11
May 1
October 13
November 1
Rogers Park
February 24
May 1
September 14
October 13
Schaumburg
July 27
September 1
November 16
December 15
South Chicago
October 6
November 10
December 30
January 29
Stickney*
June 26
August 3
October 26
November 24
Thornton*
August 21
September 25
December 07
January 05
West Chicago
June 12
July 20
October 26
November 24
Wheeling
May 14
June 19
November 2
December 1
Worth*
June 17
July 23
October 26
November 24
* south suburbs will be fully re-assessed in 2020 as part of the triennial schedule
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2019 Cook County Property Tax Appeal Deadlines & Due Dates
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