Assessment Calendar and Deadlines

The 2021 assessment and appeal schedule coincides with the implementation of iasWorld, a new integrated property tax system. This upgrade moves us from an aging mainframe system onto a state-of-the-art platform that allows property owners to easily access and update property data. Therefore, assessment mailing dates and appeal dates are subject to change. Please plan accordingly. Information will be published as it becomes available.

As new townships are certified, those dates will be published below.

Our phone lines remain open to the public during normal business hours and assistance is available via our website and social media channels.

Last updated: 05/02/2022

Note that values may take 24 hours to update online from the mail / certified date. Result letters will be sent in the mail or sent to practitioners via GovQA in the few days after certification.

2021 Assessment Calendar: City of Chicago

Township Reassessment Notice Mail Date Last Day to File CCAO Appeal  Date A-Roll Certified Date A-Roll Published Board of Review appeal dates Pass
Rogers Park 6/15/2021  7/19/2021 1/28/2022 2/3/2022 2/14/2022 - 3/15/2022 2
West Chicago 7/21/2021 8/23/2021 3/21/2022 3/31/2022 4/4/2022 - 5/3/2022 2
Jefferson 8/16/2021 9/17/2021 4/12/2022 4/23/2022 5/2/2022 - 5/31/2022 2
North 9/17/2021 10/19/2021 4/7/2022 4/20/22 4/26/2022 - 5/25/2022 2
South 9/30/2021 11/1/2021 4/11/2022 4/23/2022 4/26/2022 - 5/25/2022 2
Lake 11/4/2021 12/6/2021 4/12/2022 4/20/2022 4/26/2022 - 5/25/2022 2
Lake View 11/22/2021 12/23/2021 3/29/2022 4/6/2022 4/11/2022 - 5/10/2022 2
Hyde Park 12/15/2021 1/21/2022 4/1/2022 4/7/2022 4/11/2022 - 5/10/2022 2


2021 Assessment Calendar: Suburbs (North, South, and West)

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

Note that values may take 24 hours to update online from the mail date.

Township Reassessment Notice Mail Date Last Day to File CCAO Appeal  Date A-Roll Certified Date A-Roll Published Board of Review Appeal Dates Pass
River Forest 4/21/2021 5/21/2021 11/15/2021 12/02/2021 12/06/2021 - 1/04/2022 2
Riverside 4/22/2021 5/22/2021 11/16/2021 12/02/2021 12/06/2021 - 1/04/2022 2
Evanston 5/7/2021 6/7/2021 1/28/2022 2/10/2022 02/14/2022 - 3/15/2022 2
Oak Park 5/17/2021 6/16/2021 11/24/2021 12/01/2021 12/06/2021 - 1/04/2022 2
Norwood Park 5/17/2021 6/16/2021 11/17/2021 12/02/2021 12/06/2021 - 1/04/2022 2
Berwyn 6/1/2021 7/1/2021 12/20/2021 12/23/2021 1/03/2022 - 2/01/2022 2
New Trier 6/1/2021 7/1/2021 12/20/2021 12/30/2021 1/03/2022 - 2/01/2022 2
Cicero 6/8/2021 7/9/2021 12/13/2021 12/16/2021 12/22/2021 - 1/20/2022 2
Palatine 6/14/2021 7/16/2021 12/30/2021 1/06/2022 2/14/2022 - 3/15/2022 2
Schaumburg 6/16/2021 7/19/2021 12/23/2021 12/30/2021 1/03/2022 - 2/01/2022 2
Elk Grove 6/28/2021 7/29/2021 2/7/2022 2/10/2022 2/14/2022 - 3/15/2022 2
Orland 7/2/2021 8/3/2021 1/28/2022 2/2/2022 2/14/2022 - 3/15/2022 2
Calumet 7/2/2021 8/3/2021 12/13/2021 12/15/2021 12/22/2021 - 1/20/2022 2
Hanover 7/14/2021 8/16/2021 12/23/2021 12/30/2021 1/03/2022 - 2/01/2022 2
Barrington 7/14/2021 8/16/2021 12/10/2021 12/16/2021 12/22/2021 - 1/20/2022 2
Bloom 7/23/2021 8/23/2021 2/17/2022 2/23/2022 2/28/2022 - 3/29/2022 2
Maine 7/23/2021 8/23/2021 3/18/2022 3/24/2022 3/28/2022 - 4/26/2022 2
Thornton 8/9/2021 9/9/2021 2/17/2022 2/24/2022 2/28/2022 - 3/29/2022 2
Palos 8/12/2021 9/13/2021 3/16/2022 3/24/2022 3/28/2022 - 4/26/2022 2
Lemont 8/14/2021 9/14/2021 2/7/2022 2/11/2022 2/14/2022 - 3/15/2022 2
Worth 8/24/2021 9/24/2021 4/8/2022 4/21/2022 4/26/2022 - 5/25/2022 2
Leyden 8/30/2021 9/30/2021 3/21/2022 3/31/2022 4/4/2022 - 5/3/2022 2
Northfield 9/3/2021 10/04/2021 3/28/2022 4/7/2022 4/11/2022 - 5/10/2022 2
Bremen 9/15/2021 10/18/2021 2/11/2022 2/16/2022 02/28/2022 - 03/29/2022 2
Lyons 9/21/2021 10/25/2021 4/12/2022 4/20/2022 4/26/2022 - 5/25/2022 2
Wheeling 10/05/2021 11/05/2021 4/1/2022 4/7/2022 4/11/2022 - 5/10/2022 2
Proviso 10/08/2021 11/08/2021 4/8/2022 4/20/2022 5/2/2022 - 5/31/2022 2
Stickney 10/14/2021 11/29/2021 4/6/2022 4/21/2022 5/2/2022 - 5/31/2022 2
Rich  10/26/2021 11/29/2021 4/5/2022 4/20/2022 5/2/2022 - 5/31/2022 2
Niles 11/1/2021 12/03/2021 4/5/2022 4/21/2022 5/2/2022 - 5/31/2022 2

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Tentative township order for 2022 reassessment

The following ten townships will be the first to be reassessed and opened for appeals in the 2022 reassessment cycle.

River Forest
Riverside
Oak Park
Cicero
Calumet
Norwood Park *
Berwyn
Barrington *
Bloom
Hanover *

* Townships in the 2022 triennial reassessment of the north suburbs

At this time, we do not have exact dates for when 2022 reassessment notices will be distributed or townships will be open for appeals. When the 2022 reassessment cycle begins, more specific information will be posted on this page.

Our office continues to process appeals and certify townships as part of the 2021 Chicago reassessment process.

The CCAO is working in conjunction with the Cook County Bureau of Technology and the Cook County Board of Review on the implementation of iasWorld, a new integrated property tax system. In order to certify townships, both the CCAO and the BOR County offices must make changes to their internal systems. This process has led to delays in certifying townships. All offices of the property tax system are working diligently to manage this process.

Past Calendars:

2020 Assessment Calendar and Deadlines

2019 Assessment Calendar and Deadlines

2018 Assessment Calendar and Deadlines 

Other relevant information:

2021 CCAO Appeal Rules
2021 Practitioners Meeting Presentation Slides >> and Video >>

Commercial real estate participants: Market Analyst Day Presentations
Submit RPIE valuations data