Property Tax Appeals by Township
Cook County has 38 townships, and each has its own appeal windows at the Cook County Assessor and the Board of Review. Find your township for its deadlines, its appeal results and our guides.
Not sure which township you are in? Look up your address or PIN.
City of Chicago
Hyde Park
Jefferson
Lake
Lake View
North Chicago
Rogers Park
South Chicago
North and northwest suburbs
Barrington
Elk Grove
Evanston
Hanover
Maine
New Trier
Niles
Northfield
Norwood Park
Palatine
Schaumburg
West suburbs
Berwyn
Cicero
Leyden
Lyons
- Lyons Property Tax Appeal Deadline 2026 — Assessor (CCAO) Window Closed September 3, 2026
- Lyons Property Tax Appeal Deadline 2026 — Board of Review Window Closes November 6, 2026
- Lyons Township Cook County Property Tax Appeal Results (2025):
- Lyons Township 2026 Reassessment: Assessments Up 25%, Assessor Window Closed, Board of Review Open
- Lyons Township Property Tax Appeal: Deadline & Trends
Oak Park
Proviso
- Proviso Property Tax Appeal Deadline 2026 — Assessor (CCAO) Window Closed October 27, 2026
- Proviso Township Residential Property Tax Appeal 2026 (Cook County): Reassessment Year & What Wins
- Proviso Township Commercial Property Tax Appeal 2026 (Cook County) — Your Income Is the Argument
- Proviso Township 2026 Reassessment: Assessments Up 19% — Assessor Window Closed October 27
River Forest
Riverside
South and southwest suburbs
Bloom
Bremen
Calumet
Lemont
Orland
- Orland Property Tax Appeal Deadline 2026 — Assessor (CCAO) Window Closes November 6, 2026
- Orland Township Residential Property Tax Appeal 2026 (Cook County): Reassessment Year & What Wins
- Orland Township Commercial Property Tax Appeal 2026 (Cook County) — Your Income Is the Argument
- 98.8% of Orland Township Homes Got a Higher Assessment in 2026
- Orland Township 2026 Reassessment: Assessments Up 20% — Appeal Window Closes November 6
- Orland Township Property Tax Appeal: Your 2026 Reassessment Guide
Palos
Rich
Thornton
Worth
- Worth Property Tax Appeal Deadline 2026 — Assessor (CCAO) Window Closed October 15, 2026
- Worth Township Property Tax Appeal Results & Assessed Value Trends
- Worth Township Commercial Property Tax Appeal: Deadline & Trends
- Worth Township 2026 Reassessment: Assessments Up 22% — Assessor Window Closed, Board of Review Next
- Worth Township Property Tax Appeal: Deadline & Trends
Cook County Tax Appeals, LLC is not affiliated with any government agency.