en en de en en en en en en en en en en en en en en en en en en en en en en en en en en en vi en en en en en en en en en en en en en it en en en en en en en en en en en en en en en en en en en en en en en en en en en en en en en en en en en en en en en en en en en en en en en en en en en en en en en en en en en en en en en en en en en en en en en en en en en en en en en en en en en en en en en en en en en en en en en en en de en en en en en en en en en ru en en en en en en en en en en en en en en en en en en en eu en en vo en en en en en en en en en en en hbs_lat en en hbs_lat en en en en en en
To better assist you, we encourage you to schedule an appointment at our downtown and branch offices from 8:30 am to 5:00 pm.  The safety of our staff and the public is our top priority. Visitors are required to wear a mask and practice physical distancing. Schedule an appointment here.
Your Assessment & Tax Bill
Property Tax Rate Simulator Tool
Gitlab Code and Models
CCAO Datasets on Cook County Data Portal
All Forms & Tools
Divisions & Assessment by Legal
Flood and Disaster Areas
Model Home Forms and Information
Property Tax Rate Simulator
Real Property Income & Expense (RPIE)
Business with the CCAO
File a Complaint Form
Facebook Instagram Linked In Twitter You Tube Medium
© Cook County Assessor's Office - All rights reserved.
While the CCAO attempts to keep this Web site up to date with current law and policies, the CCAO does not guarantee the accuracy of any of the information contained herein, including but not limited to any dates or deadlines. Although the CCAO attempts to maintain the security of any information submitted through this Web site, the security of the information is not guaranteed. The CCAO assumes no liability for any damages incurred, whether directly or indirectly, incidental, punitive or consequential, as a result of any errors, omissions or discrepancies in any information published on this Web site or any use of this Web site, including but not limited to use of the on-line appeal form or exemption applications.
The Cook County Assessor's Office does not endorse and makes no representations, explicit or otherwise concerning any advertiser on this site, their content or any products or services which they offer. Content contained in advertisements or on advertisers' Web sites does not represent the views of the Cook County Assessor's Office.
Below is a summary of the Cook County Assessor's Office advertising acceptance guidelines. To receive a copy of the full list of guidelines, please contact us.
No advertisements or links to sites containing inappropriate material will be accepted. The Assessor's Office reserves the right to deny any and all requests for inclusion of inappropriate advertisements on its Web site.  In addition, the Assessor's Office reserves the right to remove any inappropriate link and/or advertisement from the site.
Inappropriate advertising examples include, but are not limited to:
Unauthorized or unapproved use of the Assessor's advertisement assets (such as, talent, logos, characters, etc.),
Gun advertisements (firearms, bullets, etc.),
Pornography advertisements, including, but not limited to any site selling, showing, linking, offering for free or otherwise, sex related matters in any medium and/or media, products or services that include massage parlors, escort services and/or matters with sexual overtones,
Potentially slanderous or libelous content,
Bad language, body parts, proxies for bad language,
Indecent language or behavior,
Illegal discrimination of any group,
Attacks considered ethnic, racial, sexual, or religious,
Ads harmful to children, emotionally or physically.
Advertisements containing disparaging characteristics,
Advertisements and/or links for products and/or services that violate the law,
Advertising that is false, misleading, deceptive and/or offensive to the moral standards of the community, or contrary to good taste,
Advertising which might be contrary to the best interests of the County, its departments, appointed and elected officials and that state or suggest that proponents or opponents of the persons or measures advertised are vulgar, greedy, immoral, monopolistic, illegal or unfair,
Advertisements involving or referring to political, religious, moral or environmental issues subject to public debate,
Any information that would subject the Web site to be a public forum,
Links to sites that contain malicious software that may be uploaded and/or downloaded to the Internet user's computer, including but not limited to spyware, adware, malicious pop-ups, and/or viruses.  Non-malicious “Cookies”, a very small text document which often includes anonymous unique identifiers, are accepted.
The assessor reserves the right to reject or to suspend any advertisement that is deemed by the assessor, in his/her sole discretion, to disrupt site service or performance or is reported to negatively affect user experience.
The advertising content must be clearly identifiable as an advertisement.
The advertiser must fulfill the advertised offer as stated in the advertisement, including without limitation, not altering any offer periods, product offers or prices that are stated in the advertisement unless advertiser has obtained the assessor's prior approval.
Advertisements cannot mislead the user. For example, they may not mimic or resemble Windows/Mac/Unix dialog boxes, error messages, or the like.
Advertisements cannot resemble cookcountyassessor.com content.
Advertisements cannot solicit or collect, or appear to solicit or collect, any personally identifiable information from cookcountyassessor.com visitors without their knowledge.
Advertisements cannot mimic news headlines in design, tone, third person sentence structure, or topic.
Advertisements cannot contain graphics that simulate interactivity (i.e. dropdown menus, search boxes etc.).   Actual interactive ads approved by the Assessor are accepted.
Must be initiated by user click
Must include a clearly labeled button or link to stop audio
Audio clips cannot loop
Additional specifications that amend or supercede these general guidelines may apply for individual ad products.
Additionally, no advertising will be accepted from attorneys, law firms, or real estate tax representatives who file appeals with the Assessor's Office.
While the CCAO attempts to keep this Web site and emails up to date with current law and policies, the CCAO does not guarantee the accuracy of any of the information contained herein and in its emails, including but not limited to any dates or deadlines. Although the CCAO attempts to maintain the security of any information submitted through this Web site, the security of the information is not guaranteed. The CCAO assumes no liability for any damages incurred, whether directly or indirectly, incidental, punitive or consequential, as a result of any errors, omissions or discrepancies in any information published on this Web site or any use of this Web site, or for products advertised and market promotions on the Web site or by and through emails including but not limited to use of the on-line appeal form or exemption applications.
The Cook County Assessor's Office does not endorse and makes no representations, explicit or otherwise concerning any advertiser on this site or emails, their content or any products or services which they offer. Content contained in advertisements, on advertisers' Web sites, or email does not represent the views of the Cook County Assessor's Office.