The Cook County Board of Review has officially opened the 2025 property tax appeal window for Group 2 townships: Cicero, Oak Park, and Palos. The deadline to file your appeal is August 19, 2025.

What This Means for Cook County Homeowners

If you live in a Group 2 township and believe your home is over-assessed, this is your opportunity to lower your 2025 property tax bill. Whether or not your property was reassessed this year, you can still appeal your assessment annually.

• Missed the Assessor’s Office appeal deadline? No problem.
• Appealed earlier and got denied or a minimal reduction? You have a second shot.
• Never appealed before? Now is a great time to start.

Why You Should Appeal Your Property Taxes

Appealing your assessed value is the only way to reduce your property tax bill—unless you sell your home or qualify for a new exemption. Our data shows that many Cook County homes are over-assessed, and homeowners are unknowingly paying more than they should.
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