article Latest Updates
Reassessment Notices Mailed to Jefferson Township Taxpayers
Median sale price for homes increases to $280,000; residential assessments increase by a median of 9.17% Read more...

Possible airport impact on property values

Assessor adds to comprehensive review of potential impact of O'Hare reconfiguration
Portions of current Jefferson Township triennial reassessment will be revisited in 2016


Bed and Breakfast Notice

As indicated in our previous public notice dated April 22, 2015, the Cook County Assessor will host a meeting for all interested parties regarding the reclassification of Bed and Breakfast (B & B) Properties.  The meeting will take place on August 10, 2015 from 10:00 a.m. to 12:00 p.m. in the 4th floor conference room (4S-A Real Estate) in the Cook County Building located at 118 N. Clark Street in Chicago.


Regarding Notice of Discovery mailings
DISCLAIMER: The Assessor’s Office does not provide legal advice. If you have legal questions regarding the audit relating to your property or any other matter relating to your property taxes, you should contact an attorney.

The Notice of Discovery that you received is to notify the taxpayer that the Assessor’s Office will be conducting an audit to verify whether or not you are entitled to the homestead exemptions that you have received on your non-homestead property. Taxpayers are only entitled to one homestead exemption on their primary residence for any given tax year. If you received a notice of discovery for your primary residence, please contact the Assessor’s Office if you have not already done so. You may contact the Assessor’s Office either by email using the Contact Us link, or by telephone at (312) 603-7434.

Receipt of this notice does not mean that the taxpayer has been found to have an exemption they are not entitled to. If the Assessor’s Office, through its audit, finds that you have received an exemption that you are not entitled to, you will receive a notice of intent to lien the property, at which time you will be able to request an administrative hearing to determine your liability. Please consult our website for further information regarding this matter.

Berrios Mails West Township Reassessment Notices
Reassessment Notices Mailed to West Township Taxpayers
Residential Assessments Increase by a Median of 12.41%
Median Sale Price for Homes is $210,000

Notice regarding "Bed and Breakfast" properties
In February of 2015, the Cook County Assessor began mailing notices to the owners of so-called "Bed and Breakfast" properties in Cook County indicating that such real estate would be re-classified from residential to commercial. Read more...

Received a Notice of Discovery?

Read Frequently Asked Questions or contact us here

Email delays

Due to the high volume of email notifications sent by our office, there may be a slight delay while our new provider verifies the email addresses we currently have on file" please read more...

Important Notices

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

Office Closure

Notice: The Rolling Meadows branch of the Cook County Assessor’s Office was closed permanently effective as of May 30, 2014. If you need immediate assistance we ask that you visit the Skokie Branch Office or the Downtown Chicago Office.

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