2021 Cook County Property Tax Appeal Dates and Deadlines
| Township |
Assessment Notices Mailed |
Assessor’s Appeal Period Closed | Board of Review Appeals Open |
Board of Review Appeals Closed |
| Barrington | 7/14/21 | 8/16/21 | ||
| Berwyn | 6/1/21 | 7/1/21 | ||
| Bloom | 7/23/21 | 8/23/21 | ||
| Bremen | 9/15/21 | 10/18/21 | ||
| Calumet | 7/2/21 | 8/3/21 | ||
| Cicero | 6/8/21 | 7/9/21 | ||
| Elk Grove | 6/28/21 | 7/29/21 | ||
| Evanston | 5/7/21 | 6/7/21 | ||
| Hanover | 7/14/21 | 8/16/21 | ||
| Hyde Park | ||||
| Jefferson | 8/16/21 | 9/17/21 | ||
| Lake | ||||
| Lake View | ||||
| Lemont | 8/14/21 | 9/14/21 | ||
| Leyden | 8/30/21 | 9/30/21 | ||
| Lyons | 9/21/21 | 10/25/21 | ||
| Maine | 7/23/21 | 8/23/21 | ||
| New Trier | 6/1/21 | 7/1/21 | ||
| Niles | ||||
| North | 9/17/21 | 10/19/21 | ||
| Northfield | 9/3/21 | 10/4/21 | ||
| Norwood Park | 5/17/21 | 6/16/21 | ||
| Oak Park | 5/17/21 | 6/16/21 | ||
| Orland | 7/2/21 | 8/3/21 | ||
| Palatine | 6/14/21 | 7/16/21 | ||
| Palos | 8/12/21 | 9/13/21 | ||
| Proviso | ||||
| Rich | ||||
| River Forest | 4/21/21 | 5/21/21 | ||
| Riverside | 4/22/21 | 5/22/21 | ||
| Rogers Park | 6/15/21 | 7/19/21 | ||
| Schaumburg | 6/16/21 | 7/19/21 | ||
| South | ||||
| Stickney | ||||
| Thornton | 8/9/21 | 9/9/21 | ||
| West | 7/21/21 | 8/23/21 | ||
| Wheeling | ||||
| Worth | 8/24/21 | 9/24/21 |