Property Tax Hub
Understand the property tax system.
Find plain-language information about assessments, appeals, exemptions, bills, deadlines, records, and the different offices involved in Cook County property taxes.
Property Lookup
Find Your Property
Search by street address or Property Index Number (PIN) to find available property information, assessment history, and appeal history.
Start with what you need
Property taxes move through several different offices. Choose the part of the system you are trying to understand or navigate.
Assessment
Understand how property value and classification are determined before an appeal is filed.
Open Assessment → 02Appeals
Learn how property owners can challenge assessed value during an open filing period.
Open Appeals → 03Tax Bills
Understand billing, payments, exemptions, tax rates, and why a final property-tax bill can change.
Open Billing → 04Records
Find information about tax extensions, property-tax records, redemption services, and tax maps.
Open Records →Who handles what?
No single office controls the entire property-tax bill. Understanding which office handles each step can save taxpayers time and confusion.
Assessment and appeals
The Assessor establishes initial assessments. The Board of Review considers assessment appeals filed during the applicable township filing period.
Bills and records
The Treasurer handles tax bills and payments. The Clerk performs tax-extension and related property-tax administrative functions.
Need help navigating the system?
Use Taxpayer Services for assistance finding the right process, agency, deadline, or property-tax resource.