Assessment & Appeal Calendar

Last updated: 9/20/23

This page contains a list of every township in Cook County along with the reassessment mailing dates and timeframe in which appeals may be filed. Property owners are given an opportunity to file an appeal with the Assessor's Office and at the Board of Review, both dates can be found below. 

Cook County follows a triennial reassessment cycle, meaning that a property is reassessed once every three years. A property's reassessment year depends on the township in which the property is located. To determine which township a property is located in, click here

In 2023, the South and Western Suburbs will undergo reassessment and each property owner will be mailed a Reassessment Notice, which contains the property address, its characteristics, and its updated estimated Fair Market Value. Properties in the City of Chicago and the northern suburbs only undergo reassessment if there is a change due to division work, permit applications, or other special circumstances. 

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2023 Assessment Calendar: South and West Suburbs

As townships are certified by the Board of Review for the 2023 assessment calendar below, they will be noted in the "Pass" column. Only rows with the words "BOR Final" are currently available on the CCAO website and data subscription service.

Once assessment rolls are certified, the information is made available online and to all offices of the Cook County property tax system. By law, the assessment roll must also be published in a print newspaper. The "published" date refers to when the information will be available in the newspaper.

Open For Appeals Until 10/2/2023
File an Appeal
Reassessment Notice Date
Last File Date
Date A-Roll Certified
Date A-Roll Published
Last File Date Board of Review Appeal Dates
Pass
1
Open For Appeals Until 10/23/2023
File an Appeal
Reassessment Notice Date
Last File Date
Date A-Roll Certified
Date A-Roll Published
Last File Date Board of Review Appeal Dates
Pass
1
Reassessment Notice Date
Last File Date
Date A-Roll Certified
Date A-Roll Published
Last File Date Board of Review Appeal Dates
Pass
Reassessment Notice Date
Last File Date
Date A-Roll Certified
Date A-Roll Published
Last File Date Board of Review Appeal Dates
Pass
Reassessment Notice Date
Last File Date
Date A-Roll Certified
Date A-Roll Published
Last File Date Board of Review Appeal Dates
Pass
Closed For Appeals
Reassessment Notice Date
Last File Date
Date A-Roll Certified
Date A-Roll Published
Board of Review Appeal Dates
-
Pass
2
Closed For Appeals
Reassessment Notice Date
Last File Date
Date A-Roll Certified
Date A-Roll Published
Board of Review Appeal Dates
-
Pass
2
Closed For Appeals
Reassessment Notice Date
Last File Date
Date A-Roll Certified
Date A-Roll Published
Board of Review Appeal Dates
-
Pass
2
Closed For Appeals
Reassessment Notice Date
Last File Date
Date A-Roll Certified
Date A-Roll Published
Board of Review Appeal Dates
-
Pass
2
Closed For Appeals
Reassessment Notice Date
Last File Date
Date A-Roll Certified
Date A-Roll Published
Board of Review Appeal Dates
-
Pass
2
Closed For Appeals
Reassessment Notice Date
Last File Date
Date A-Roll Certified
Date A-Roll Published
Board of Review Appeal Dates
-
Pass
2
Closed For Appeals
Reassessment Notice Date
Last File Date
Date A-Roll Certified
Date A-Roll Published
Last File Date Board of Review Appeal Dates
Pass
2
Closed For Appeals
Reassessment Notice Date
Last File Date
Date A-Roll Certified
Date A-Roll Published
Last File Date Board of Review Appeal Dates
Pass
2
Closed For Appeals
Reassessment Notice Date
Last File Date
Date A-Roll Certified
Date A-Roll Published
Last File Date Board of Review Appeal Dates
Pass
1
Closed For Appeals
Reassessment Notice Date
Last File Date
Date A-Roll Certified
Date A-Roll Published
Last File Date Board of Review Appeal Dates
Pass
1
Closed For Appeals
Reassessment Notice Date
Last File Date
Date A-Roll Certified
Date A-Roll Published
Last File Date Board of Review Appeal Dates
Pass
1
Closed For Appeals
Reassessment Notice Date
Last File Date
Date A-Roll Certified
Date A-Roll Published
Last File Date Board of Review Appeal Dates
Pass
1

2023 Assessment Calendar: City of Chicago and North Suburbs

In the City of Chicago and North Suburban townships, individual properties will only be reassessed only if there is a change due to division work, permit applications, or other special applications. 

Closed For Appeals
Reassessment Notice Date
Last File Date
Date A-Roll Certified
Date A-Roll Published
Last File Date Board of Review Appeal Dates
Pass
1
Open For Appeals Until 10/2/2023
File an Appeal
Reassessment Notice Date
Last File Date
Date A-Roll Certified
Date A-Roll Published
Last File Date Board of Review Appeal Dates
Pass
1
Open For Appeals Until 10/2/2023
File an Appeal
Reassessment Notice Date
Last File Date
Date A-Roll Certified
Date A-Roll Published
Last File Date Board of Review Appeal Dates
Pass
2
Open For Appeals Until 10/19/2023
File an Appeal
Reassessment Notice Date
Last File Date
Date A-Roll Certified
Date A-Roll Published
Last File Date Board of Review Appeal Dates
Pass
1
Open For Appeals Until 10/20/2023
File an Appeal
Reassessment Notice Date
Last File Date
Date A-Roll Certified
Date A-Roll Published
Last File Date Board of Review Appeal Dates
Pass
1
Reassessment Notice Date
Last File Date
Date A-Roll Certified
Date A-Roll Published
Last File Date Board of Review Appeal Dates
Pass
Reassessment Notice Date
Last File Date
Date A-Roll Certified
Date A-Roll Published
Last File Date Board of Review Appeal Dates
Pass
Reassessment Notice Date
Last File Date
Date A-Roll Certified
Date A-Roll Published
Last File Date Board of Review Appeal Dates
Pass
Reassessment Notice Date
Last File Date
Date A-Roll Certified
Date A-Roll Published
Last File Date Board of Review Appeal Dates
Pass
Closed For Appeals
Reassessment Notice Date
Last File Date
Date A-Roll Certified
Date A-Roll Published
Last File Date Board of Review Appeal Dates
Pass
Closed For Appeals
Reassessment Notice Date
Last File Date
Date A-Roll Certified
Date A-Roll Published
Board of Review Appeal Dates
-
Pass
2
Closed For Appeals
Reassessment Notice Date
Last File Date
Date A-Roll Certified
Date A-Roll Published
Board of Review Appeal Dates
-
Pass
2
Closed For Appeals
Reassessment Notice Date
Last File Date
Date A-Roll Certified
Date A-Roll Published
Board of Review Appeal Dates
-
Pass
2
Closed For Appeals
Reassessment Notice Date
Last File Date
Date A-Roll Certified
Date A-Roll Published
Board of Review Appeal Dates
-
Pass
2
Closed For Appeals
Reassessment Notice Date
Last File Date
Date A-Roll Certified
Date A-Roll Published
Last File Date Board of Review Appeal Dates
Pass
2
Closed For Appeals
Reassessment Notice Date
Last File Date
Date A-Roll Certified
Date A-Roll Published
Last File Date Board of Review Appeal Dates
Pass
2
Closed For Appeals
Reassessment Notice Date
Last File Date
Date A-Roll Certified
Date A-Roll Published
Last File Date Board of Review Appeal Dates
Pass
2
Closed For Appeals
Reassessment Notice Date
Last File Date
Date A-Roll Certified
Date A-Roll Published
Last File Date Board of Review Appeal Dates
Pass
1
Closed For Appeals
Reassessment Notice Date
Last File Date
Date A-Roll Certified
Date A-Roll Published
Last File Date Board of Review Appeal Dates
Pass
Closed For Appeals
Reassessment Notice Date
Last File Date
Date A-Roll Certified
Date A-Roll Published
Last File Date Board of Review Appeal Dates
Pass
1
Closed For Appeals
Reassessment Notice Date
Last File Date
Date A-Roll Certified
Date A-Roll Published
Last File Date Board of Review Appeal Dates
Pass
1

2022 Assessment Calendar: North Suburbs

2021 Assessment Calendar: City of Chicago

2020 Assessment Calendar: South and West Suburbs