Chicago Property Taxes and Appeals

Every Chicago property sits in one of eight Cook County townships: Hyde Park, Jefferson, Lake, Lake View, North Chicago, Rogers Park, South Chicago and West. The Cook County Assessor last reassessed the city in 2024 and reassesses it again in 2027. Here is how Chicago property taxes are set, why bills have gone up, and how to appeal your assessment at the Assessor and the Board of Review.

Enter your property address or 14-digit PIN. We map it to the correct township and show your Cook County Assessor and Cook County Board of Review filing windows.

  • West Township (Chicago)

    Board closes in 3 days

    Assessor appeal window

    CLOSEDJul 10 – Aug 21, 2026

    Board of Review appeal window

    OPENOct 8 – Nov 6, 2026

    Notice mailed: Jul 10, 2026

    Reassessed 2024 → next 2027

  • Jefferson Township (Chicago)

    Assessor closes in 9 days

    Assessor appeal window

    OPENSep 29 – Nov 12, 2026

    Board of Review appeal window

    DATES NOT RELEASED

    Notice mailed: Sep 29, 2026

    Reassessed 2024 → next 2027

  • North Chicago Township (Chicago)

    Assessor closes in 21 days

    Assessor appeal window

    OPENOct 9 – Nov 24, 2026

    Board of Review appeal window

    DATES NOT RELEASED

    Notice mailed: Oct 09, 2026

    Reassessed 2024 → next 2027

  • South Chicago Township (Chicago)

    Assessor closes in 42 days

    Assessor appeal window

    OPENOct 30 – Dec 15, 2026

    Board of Review appeal window

    DATES NOT RELEASED

    Notice mailed: Oct 30, 2026

    Reassessed 2024 → next 2027

  • Assessor appeal window

    CLOSEDAug 26 – Oct 8, 2026

    Board of Review appeal window

    DATES NOT RELEASED

    Notice mailed: Aug 26, 2026

    Reassessed 2024 → next 2027

  • Lake Township (Chicago)

    No window open yet

    Assessor appeal window

    CLOSEDSep 16 – Oct 29, 2026

    Board of Review appeal window

    DATES NOT RELEASED

    Notice mailed: Sep 16, 2026

    Reassessed 2024 → next 2027

  • Lake View Township (Chicago)

    Both windows closed

    Assessor appeal window

    CLOSEDMay 28 – Jul 13, 2026

    Board of Review appeal window

    CLOSEDAug 31 – Sep 29, 2026

    Notice mailed: May 28, 2026

    Reassessed 2024 → next 2027

    Sign up now for your 2027 appeal

    Free to start. 25% of first-year savings, only if your assessment is reduced. When the 2027 assessments are published, our attorneys review your property and, if the record supports an appeal, prepare and file it, from initial filing to final decision.

    Start My 2027 Appeal
  • Assessor appeal window

    CLOSEDApr 17 – Jun 1, 2026

    Board of Review appeal window

    CLOSEDAug 3 – Sep 1, 2026

    Notice mailed: Apr 17, 2026

    Reassessed 2024 → next 2027

    Sign up now for your 2027 appeal

    Free to start. 25% of first-year savings, only if your assessment is reduced. When the 2027 assessments are published, our attorneys review your property and, if the record supports an appeal, prepare and file it, from initial filing to final decision.

    Start My 2027 Appeal

Chicago property tax appeal attorneys and CPAs

Our office is in Palos Heights, in southwest Cook County. We represent Chicago owners in all eight city townships, and appeals are filed online, so you do not need to visit us. Call (708) 888-8880 or check your property below.

Who sets a Chicago property tax

The City of Chicago levies a tax, but it does not value your property. The Cook County Assessor sets the assessment, the Cook County Board of Review hears appeals, and the Cook County Treasurer sends the bill. An appeal of a Chicago property goes to the county.

Chicago & Cook County property tax rates by township

Why did your Chicago bill go up? See why Cook County property tax bills rise.

The 2027 Chicago reassessment

In 2027 the Assessor mails a new assessment notice to every Chicago property, township by township, and each township's appeal window opens when its notices go out.

Do I appeal to the City of Chicago or to Cook County?

To Cook County. The Cook County Assessor and the Cook County Board of Review hear appeals; the city does not. You can file at the Assessor, at the Board of Review, or at both, each in your township's window.

Can I appeal in a year Chicago is not reassessed?

Yes. Each township's appeal windows open every year, not only in its reassessment year.

What does it cost?

Our fee is 25% of your first-year tax savings, invoiced only after your assessment is reduced. If there is no reduction, there is no fee.

Cook County Tax Appeals, LLC is not affiliated with any government agency.