Check the County.

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November 2026 appeal opening: five Cook County townships

The Board of Review announced a November 9–December 8, 2026 filing window for Barrington, Bremen, Calumet, Hyde Park, and Lemont. This dated update was checked November 10, 2026; confirm any later changes on the county calendar.

By Check the County, operated by Embento LLC. Reviewed .

1. Check your township

These five townships are in Group 4 for the Board's 2026 session. Use the township on your property record, which can differ from the city in your mailing address.

Find a different township in our township directory. The Assessor and Board of Review have separate calendars.

2. Keep the two deadlines separate

  • Filing opens: November 9, 2026.
  • Complaint filing closes: December 8, 2026.
  • Evidence submission deadline: December 18, 2026.

The later evidence date is not extra time to start a complaint. Check the official dates and deadlines and follow the filing portal's instructions.

For the previous group—Lyons, Northfield, Stickney, and West Chicago—the published complaint deadline was November 6, with evidence due November 16, 2026. If you already filed, check your submission and remaining evidence requirements.

3. Prepare your property records

Start with your PIN, assessment notice, and property facts. Note any record errors, and keep sources for the corrections you request. For sales research, record each sale's date, price, size, and why it is comparable to your home.

Use our evidence checklist to organize your documents and our comparable-sales worksheet to review possible sales. A nearby sale alone does not establish that your assessment is wrong.

File through the Board of Review's official website and keep your confirmation. The county charges no filing fee. Checking your property here or buying research does not submit an appeal.

4. Official sources checked November 10

The Board's November 5 announcement identifies the five townships and the November 9 opening. Its body and the 2026 session calendar (PDF) agree on the December 8 filing deadline. The calendar separately lists December 18 for evidence.

Use the county's current calendar for any changes after this review date.

General information for public-record research, not legal, tax, or appraisal advice. Verify filing requirements with the office handling your request.