PropTaxCheckerCook County, IL

Tinley Park property tax appeals: deadlines and a free assessment check

Is your Tinley Park 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.

Tinley Park spans 3 townships. Your result page shows which one your home is in, and its exact deadline.

Orland Township 62% of Tinley Park's homes

Assessor appeals are open until November 6, 2026. 0 days left

Last year 2,122 Orland Township homeowners filed their own Board of Review appeal and 43% won a reduction.

Bremen Township 32% of Tinley Park'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 2,183 Bremen Township homeowners filed their own Board of Review appeal and 45% won a reduction.

Rich Township 5% of Tinley Park's homes

Assessor appeals are open until December 4, 2026. 28 days left

Last year 2,344 Rich Township homeowners filed their own Board of Review appeal and 42% 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.