Cook County Assessor Fritz Kaegi is committed to fairness, ethics, and transparency


The Cook County Assessor’s Office invites all who conduct business before the office to the annual practitioners’ meeting on Thursday, February 6th at 1030 a.m. in the lower level lecture hall at the Thompson Center.

A copy of the revised rules for appeal will be posted in advance of the meeting on on Monday, February 3rd.

Please click here to RSVP

We look forward to seeing you on the 6th.


If you received the Homeowner and/or Senior Exemptions last year and your residency did not change, you will automatically continue to receive both the Homeowner and Senior Exemptions and do not need to re-apply. Prior recipients of the Senior Exemption will receive mail about their exemption status in January.

Note: A new law this year allows for the automatic renewal of the Senior Exemption for those taxpayers who received it last year. All other exemptions besides the Homeowner and Senior Exemptions require annual applications.

New senior exemption applications are due on February 13th, 2020.

If you received the Senior Freeze Exemption last year, the Cook County Assessor’s Office has mailed your renewal application to your home.

If you received the Persons with Disabilities, Veterans with Disabilities, and/or Longtime Occupant Exemptions, we will mail your renewal form to your home in early February.

New homeowners who purchased their homes before January 1, 2019 will receive application forms in the mail in the first week of February.

For answers to frequently asked questions about exemptions, read our 2020 FAQ here.

External Audit Report of CCAO

IAAO Logo As part of his reform plan for the office, Assessor Kaegi asked the International Association of Assessing Officers to conduct a comprehensive audit of the Cook County Assessor's Office (CCAO) operations. The IAAO is a global community of mass appraisal experts who promote excellence in appraisal, assessment administration, and property tax policy. The audit's goal was to identify opportunities to improve office operations, especially in the area of valuations and data modernization, and determine the resources needed to support Assessor Kaegi's vision of an office driven by a commitment to equity, fairness, and transparency.

The IAAO identified four areas of operation that needed improvement in the CCAO: staffing and skill development, adapting technology, data quality, and valuation methods. Many of the operational changes recommended in the report have been areas of focus in the first 100 days of Assessor Kaegi's administration.

A copy of the audit report can be found PDFhere.


First Assessments of North Suburbs Released

In a commitment to fairness and transparency, Assessor Fritz Kaegi promised to release detailed reports on how the Assessor's Office creates its assessments.

As part of the triennial assessment process, the Northern Suburbs will be re-assessed this year, the South Suburbs next year and Chicago proper in 2021.

Assessor Kaegi has released his first reports, starting with the Norwood Park, Evanston and New Trier townships.

Historical data comparisons can be found here. Additional reports will be released for each re-assessed township and a full accounting of the North Suburban re-assessment process will be released this fall.

The tentative schedule for assessment mailings and appeals for 2019 can be found here.

New Rules For Appeals

The Cook County Assessor's Office has released new rules for lawyers, tax representatives and practitioners doing business with the Office in March of 2019. You can read a copy of the rules here.

June 27, 2019 Update: The Office has created new forms to assist lawyers, tax representatives, and practitioners filing appeals so that doing business with us is not only fair, ethical, and transparent, but also efficient. Read Assessor Kaegi's letter about how to use the new PDFAppeal Data Form A and PDFAppeal Data Form B together.

Important Notices

Tax Bills and Payments

The Cook County Treasurers Office mails out tax bills and collects payments.
For a copy of your bill and/or payment information, please contact the Cook County Treasurers Office at 312-443-5100,
or visit their Web site at

Report Erroneous Exemptions

When a property is getting an erroneous exemption you are paying more than your fair share. You can anonymously report erroneous exemptions at whistleblowing .


Click here if you have a question, would like to send us an email or to receive emails regarding mailing dates, deadlines and assessment information.