Are you overpaying
your property tax?
Enter your Cook County address and see how your assessment compares to your neighbors — in seconds.
23.2%
of Cook County single-family and small multi-family homes are assessed above their class neighborhood median by more than 10%
$10,424
average assessment gap for over-assessed properties
Free
to appeal — no attorney or filing fee required
We compare your property to homes of the same class in the same neighborhood using official Assessor data. Over-assessed means your assessed value exceeds that group median by more than 10% — the specific uniformity argument used in Board of Review appeals.
How it works
Search your address
Type your Cook County address to find your parcel in our database of 1.48 million residential properties.
See your assessment gap
We compare your assessed value to your neighborhood median and calculate how much you may be overpaying.
Appeal for free
If over-assessed, you can file a free appeal with the Cook County Assessor — no attorney or filing fee required.