PropTaxCheckerCook County, IL

Chicago property tax appeals: deadlines and a free assessment check

Is your Chicago home assessed higher than similar homes nearby? Check in a minute, then file yourself for free.

Free. No sign-up. Compares your home with the 5 to 10 most similar homes nearby, from the Assessor's own data.

Chicago spans 8 townships. Your result page shows which one your home is in, and its exact deadline.

Lake Township 33% of Chicago's homes

The Assessor window has closed. The Board of Review opens this township later; check the Board's dates page or pre-register on its portal.

Last year 9,356 Lake Township homeowners filed their own Board of Review appeal and 58% won a reduction.

Jefferson Township 26% of Chicago's homes

Assessor appeals are open until November 12, 2026. 6 days left

Last year 7,251 Jefferson Township homeowners filed their own Board of Review appeal and 61% won a reduction.

Hyde Park Township 15% of Chicago's homes

The Assessor window has closed. The Board of Review opens this township later; check the Board's dates page or pre-register on its portal.

Last year 2,389 Hyde Park Township homeowners filed their own Board of Review appeal and 50% won a reduction.

West Chicago Township 15% of Chicago's homes

The Assessor window has closed. The Board of Review opens this township later; check the Board's dates page or pre-register on its portal.

Last year 3,639 West Chicago Township homeowners filed their own Board of Review appeal and 57% won a reduction.

Lake View Township 5% of Chicago's homes

The 2026 appeal windows for Lake View have closed. You can still check the comps now and file next year.

Last year 991 Lake View Township homeowners filed their own Board of Review appeal and 53% won a reduction.

South Chicago Township 4% of Chicago's homes

Dates for this township weren't published when our calendar was last updated.

Last year 1,703 South Chicago Township homeowners filed their own Board of Review appeal and 48% won a reduction.

Rogers Park Township 2% of Chicago's homes

The 2026 appeal windows for Rogers Park have closed. You can still check the comps now and file next year.

Last year 478 Rogers Park Township homeowners filed their own Board of Review appeal and 44% won a reduction.

North Chicago Township 1% of Chicago's homes

Assessor appeals are open until November 24, 2026. 18 days left

Last year 161 North Chicago Township homeowners filed their own Board of Review appeal and 31% won a reduction.

What to do

  1. Run the free check above. It compares your assessed value per square foot with similar homes in your assessment neighborhood.
  2. If yours looks high, get the evidence kit from the result page: the comps in the Board's format, recent sales, and a statement to paste into the form.
  3. File online at the office whose window is open. Filing is free at both. You type the complaint yourself; only you or an Illinois attorney can file for your home.
  4. Leave an email on the result page and we'll remind you a week and three days before the deadline.

New to this? Read how to appeal, step by step.