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:
How often is my property reassessed?
Cook County is reassessed triennially, which means one-third of the county is reassessed each year. This year, the south suburbs will be reassessed. Your property may also be reassessed if there are significant changes due to a permit application, property division, demolition, or other special application.
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