Assessment Calendar and Deadlines

As of Monday, November 16th, the downtown and suburban offices of the Cook County Assessor's Office are closed to the public. 

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

South and West Suburbs (triennial reassessment in 2020)

Township Reassessment Notice Mail Date Last Date Appeals Accepted Date A-Roll Certified Date A-Roll Published Board of Review Filing Dates Pass
River Forest 2/7/2020 5/1/2020 9/30/2020* 10/8/2020 10/13/2020 to 11/1/2020 2
Riverside 2/11/2020 5/1/2020 9/30/2020* 10/8/2020 10/13/2020 to 11/1/2020 2
Oak Park 2/27/2020 5/1/2020 9/30/2020* 10/7/2020 10/13/2020 to 11/1/2020 2
Palos 3/13/2020 5/1/2020 8/27/2020 9/3/2020 9/14/2020 to 10/13/2020 2
Calumet 4/20/2020 5/26/2020 9/1/2020 9/11/2020 9/14/2020 to 10/13/2020 2
Berwyn 5/18/2020 6/23/2020 10/6/2020 10/15/2020 10/26/2020 to 11/24/2020 2
Lemont 5/27/2020 7/2/2020 10/6/2020 10/16/2020 10/26/2020 to 11/24/2020 2
Worth 6/17/2020 7/23/2020 10/15/2020 10/22/2020 10/26/2020 to 11/24/2020 2
Stickney 6/26/2020 8/3/2020 10/19/2020 10/22/2020 10/26/2020 to 11/24/2020 2
Lyons 7/10/2020 8/14/2020 10/30/2020 11/5/2020 11/16/2020 to 12/15/2020 2
Orland 7/22/2020 8/27/2020 11/2/2020 11/5/2020 11/16/2020 to 12/15/2020 2
Cicero 7/24/2020 8/31/2020 11/2/2020 11/5/2020 11/16/2020 to 12/15/2020 2
Thornton 8/21/2020 9/25/2020 11/18/2020 11/26/2020 12/7/2020 to 1/5/2021 2
Proviso 8/31/2020 10/5/2020 11/24/2020 12/2/2020 12/7/2020 to 1/5/2021 2
Bremen 9/16/2020 10/22/2020 11/27/2020 12/3/2020 12/7/2020 to 1/5/2021 2
Rich 9/24/2020 10/30/2020 12/2/2020 12/10/2020 12/16/2020 to 1/14/2021 2
Bloom 10/8/2020 11/12/2020 12/4/2020 12/9/2020 12/16/2020 to 1/14/2021 2

* Indicates date of re-certification of this township


City of Chicago and North Suburbs

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

Township Reassessment Notice Mail Date Last Date Appeals Accepted Date A-Roll Certified Date A-Roll Published Board of Review Filing Dates Pass
Evanston 2/19/2020 5/1/2020 9/23/2020 10/8/2020 10/14/2020 to 11/12/2020 2
Norwood Park 2/20/2020 5/1/2020 9/4/2020 9/17/2020 9/28/2020 to 10/27/2020 2
Rogers Park 2/24/2020 5/1/2020 8/19/2020 8/26/2020 9/14/2020 to 10/13/2020 2
New Trier 3/5/2020 5/1/2020 10/8/2020 10/22/2020 11/2/2020 to 12/1/2020 2
Barrington 3/13/2020 5/1/2020 10/8/2020 10/22/2020 11/2/2020 to 12/1/2020 2
Palatine 5/6/2020 6/10/2020 9/28/2020 10/8/2020 10/14/2020 to 11/12/2020 2
Wheeling 5/14/2020 6/19/2020 10/8/2020 10/22/2020 11/2/2020 to 12/1/2020 2
West Chicago 6/12/2020 7/20/2020 10/19/2020 10/22/2020 10/26/2020 to 11/24/2020 2
Leyden 6/23/2020 7/29/2020 10/22/2020 10/29/2020 11/2/2020 to 12/1/2020 2
Elk Grove 6/26/2020 8/4/2020 10/23/2020 10/29/2020 11/2/2020 to 12/1/2020 2
Lake View 7/1/2020 8/5/2020 11/4/2020 11/11/2020 11/16/2020 to 12/15/2020 2
Maine 7/21/2020 8/26/2020 11/5/2020 11/11/2020 11/16/2020 to 12/15/2020 2
Schaumburg 7/29/2020 9/1/2020 11/5/2020 11/11/2020 11/16/2020 to 12/15/2020 2
Hyde Park 8/20/2020 9/24/2020 11/17/2020 11/26/2020 12/7/2020 to 1/5/2021 2
Jefferson 8/28/2020 10/2/2020 11/23/2020 11/28/2020 12/7/2020 to 1/5/2021 2
Hanover 9/9/2020 10/15/2020 12/1/2020 12/10/2020 12/16/2020 to 1/14/2021 2
Northfield 9/15/2020 10/21/2020 11/27/2020 12/10/2020 12/16/2020 to 1/14/2021 2
Lake 9/23/2020 10/29/2020 12/8/2020 12/18/2020 12/23/2020 to 1/21/2021 2
Niles 9/24/2020 10/30/2020 12/3/2020 12/10/2020 12/16/2020 to 1/14/2021 2
North Chicago 9/25/2020 11/2/2020 12/10/2020 12/16/2020 12/23/2020 to 1/21/2021 2
South Chicago 10/6/2020 11/10/2020 12/10/2020 12/19/2020 12/30/2020 to 1/29/2021 2

 

2020 Townships Certified Assessor-Final

Townships in South/West Suburbs  Townships in North Suburbs and Chicago 
Berwyn, Bloom, Bremen, Calumet, Cicero, Lemont, Lyons, Oak Park, Orland, Palos, Proviso, Rich, River Forest, Riverside,  Stickney, Thornton, Worth Barrington, Elk Grove, Evanston, Hanover, Hyde Park, Jefferson, Lake, Lake View, Leyden, Maine, New Trier, Niles, North Chicago, Northfield, Norwood Park, Palatine, Rogers Park, Schaumburg, South Chicago, West Chicago, Wheeling

 

Records:

2019 Assessment Calendar and Deadlines

2018 Assessment Calendar and Deadlines