Check to see if your township is "open for appeals"
An appeal can only be filed during certain timeframes. Check to see if your township is open for appeals. Starting a file before your township is open may result in a deleted file.
Check to see if your township is "open for appeals"
An appeal can only be filed during certain timeframes. Check to see if your township is open for appeals. Starting a file before your township is open may result in a deleted file.
Have an email address ready
An email address is required to create an account. A Filing ID and Docket Number will be created and emailed to you for your filing record.
Have an email address ready
An email address is required to create an account. A Filing ID and Docket Number will be created and emailed to you for your filing record.
Begin your application
You can save a draft, which allows you to return, modify, and upload attachments before submitting your application.
Begin your application
You can save a draft, which allows you to return, modify, and upload attachments before submitting your application.
Submit by the deadline date
Please only submit one application by the deadline date.
Submit by the deadline date
Please only submit one application by the deadline date.
Await results by mail
You will receive an initial email confirming your submission and a second email containing your appeal docket number used to reference your appeal. The results of your application will be sent by mail.
Await results by mail
You will receive an initial email confirming your submission and a second email containing your appeal docket number used to reference your appeal. The results of your application will be sent by mail.
PLEASE READ FOR APPEALS WITH MULTIPLE PARCELS OR PINS: The CCAO appeal filing system is currently undergoing an update. If you file an appeal now for property that includes multiple parcels (PINs), you will not be able to enter additional parcels into the system or upload a batch of parcels. Please check back in a few days for a status update that will allow you to enter or upload all parcels with your appeal.
This update does not affect anybody filing an appeal on a single parcel of property.
To begin an appeal application, click on the filing type below.
Residential
All single-family homes, townhomes, multi-family residential buildings, and mixed-use properties with no more than six units (class 2).
A new tool allows users to find and use comparable properties within this online application.
Condo/Coop
For condominium parcels.
Commercial
Commercial and industrial (class 5), apartment buildings with 7 or more units (class 3), and Not-for-Profit (class 4) properties.
Other Filing Types
Vacant Land
All vacant and unimproved real estate (class 1).
Incentive Property
To file an incentive appeal, an incentive eligibility application must be on file and deemed eligible.
Omitted Property
An omitted assessment can be issued up to three years before the current assessment year.
This is commonly referred to as "charging a back tax" to a property omitted from the assessment roll.
Attach Additional Documents
Filers can attach additional documents for an application that has been "submitted" if the township is still open for appeal.
Correct Property Characteristics
This filing allows a residential property owner to fix the "Property Characteristics" that are on file with the Assessor's Office. This can be done year-round and is not an appeal filing.
These filings are only for municipalities and townships
Permits
For municipalities & townships only
Permits
Only for the City of Chicago
Watch a video that provides an overview of how to file an online appeal application.
Resources to help guide you through the appeal process
Online appeal FAQs How to Find Comparable Properties
Questions? We're here to help. Please contact us any time by sending a message on the website, Facebook, or by calling us at (312) 443-7550.
If you experience issues with the online appeal system, please email Assessor.onlineappeals@cookcountyil.gov.
