Due to a Countywide technology upgrade, processing of Certificates of Error applications are temporarily on hold. This means that no applications or refunds will be issued at this time. Applications can still be filed, but they will be processed at a later date in the order they were received. When your application is processed, you will receive an email notification with the result. You can also check the status of your application by logging into your account and clicking on “My Filings” on the top of the Page. Login here
The Cook County Assessor’s Office won three 2025 Achievement Awards from the National Association for Counties (NACo). The awards honor innovative, effective county government programs that strengthen services for residents of Cook County. Click on the link below to learn about the awards.
Cook County Homeowners Saved $1.9 Billion Under Fritz Kaegi’s Reforms, University of Chicago Study Finds
A study was published by the University of Chicago that found our Office has made great progress in improving the fairness of residential assessments. We encourage you to read the study and learn about the changes we’ve made to improve residential assessments.
Assessor Kaegi is pleased to share the 2024-2027 Strategic Plan
This comprehensive plan represents a collaborative effort across our office and with key stakeholders and community partners. This new plan focuses on data integrity, distinguished service, and a teamwork culture as the pillars of our reform approach.