Resources
Property tax check
Two quick checks every homeowner can do with the county offices. I do not perform these checks; the links below go directly to the official offices.
Do you have your homeowner exemption?
Exemptions lower the taxable value of your home. In Cook County, the most common is the Homeowner Exemption, for owners who live in the home as their principal residence. Other exemptions include the Senior Exemption, the Low-Income Senior Citizens Assessment Freeze, and exemptions for persons with disabilities and veterans with disabilities.
To check: find your property on the Cook County Assessor’s site by address or by your 14-digit Property Index Number (PIN), then review the Exemption History and Status.
To apply: the Assessor’s Office accepts applications online. Missing exemptions from past years may be requested through a Certificate of Error.
More on this site: senior exemptions and Cook County exemptions.
- Cook County Assessor: search by address
- Cook County Assessor: exemptions
- Homeowner Exemption
- Senior Exemption
- Senior Freeze Exemption
- Persons with Disabilities Exemption
- Veterans with Disabilities Exemption
- Online exemption application (Cook County)
Is the tax bill in the correct name?
The Cook County Treasurer mails tax bills to the name and mailing address on record, and the Assessor mails exemption forms to that same name and address. After you buy, make sure both are yours.
To check: look up your PIN on the Treasurer’s website (Your Property Tax Overview) and review the mailing information.
To update: the Treasurer explains how to request a name or mailing address change online, by mail or in person. Changing the name on the bill does not change ownership; ownership is shown by the recorded deed.
To see the recorded deed: the Cook County Clerk’s Recordings division keeps recorded documents.
- Cook County Treasurer
- Treasurer: updating name and mailing address
- Assessor: getting your name on the tax bill
- Cook County Clerk: Recordings
Other counties I serve
In DuPage, Lake and Will counties, exemptions are handled by the county assessment office together with your township assessor, and tax bills by the county treasurer. Your township assessor’s office is listed on the county assessment office website.
- DuPage County Supervisor of Assessments
- DuPage County Treasurer
- Lake County Chief County Assessment Office
- Lake County Treasurer
- Will County Supervisor of Assessments
- Will County Treasurer
- Illinois Department of Revenue: property tax
- Illinois Department of Revenue: exemption information
General information only. Exemptions, deadlines and procedures are set by each county; please verify directly with the county offices.
Sources (checked October 17, 2026): all links above were checked on October 17, 2026.
Anett Y. Wator, Illinois Real Estate Broker, License #475.220814 · At Home Realty Group, Inc. · brokeranettwator@gmail.com