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Assessor Services
“Oak Park Township Assessor Services can answer many questions on real estate assessment and property tax bills. Property values are determined by the Cook County Assessor’s office.”
Assessor News
View, print, and download the latest information from the Oak Park Township Assessor's Office.
Press Releases
All Press Releases can be found in the Oak Park Township Assessor Services Archives.
Property Tax
Every Oak Park property pays a small share of Oak Park’s $233 million tax burden.
A property’s share of the burden is determined by comparing its assessed value to Oak Park’s overall assessed value.
Thus, a property that comprises 1% of the total assessed value of Oak Park pays 1% of Oak Park’s total tax burden.
Spending increases will raise the community’s overall tax burden, and changes in your property’s share of the burden will determine whether it pays a larger or smaller portion of the increased community-wide tax burden.
Property Tax Appeals
Oak Park Appeal Period Opening Soon
APPEAL PERIOD RUNS FROM JULY 30 TO AUGUST 28
Contact: Ali ElSaffar
Oak Park Township Assessor
(708) 383-8005
Taxpayers requesting assistance with their appeals may call 708-383-8005 to request a phone appointment.
Effective: July 30, 2020
Property Tax Assessment Resources
Oak Park Township Assessor Services can answer many questions on real estate assessment and property tax bills.
Property values are determined by the Cook County Assessor's office.
Property tax collection and distribution is handled by the Cook County Treasurer's office.
Cook County Assessor Exemptions and Forms
Low-Income Senior Cititzens Assessment Freeze - "Senior Freeze"
Homeowners over 65 years of age and with a total household annual income of $65,000 or less may be eligible for the Low-Income Senior Citizens Assessment Freeze, also known as the "Senior Freeze."
Applications for the current 2023 Tax Year are closed, but if you want to learn more, please visit the Cook County Assessor's Office Senior Freeze Exemption webpage or contact the Oak Park Township Assessor's office at (708) 383-8005.
Persons with Disabilities Exemption
Homeowners with disabilities may be eligible for an annual $2,000 reduction in their property's equalized assessed value (EAV) through the Persons with Disabilities Exemption.
Applications for the current 2023 Tax Year are closed, but if you want to learn more, please visit the Cook County Assessor's Office Persons with Disabilities Exemption webpage or contact the Oak Park Township Assessor's office at (708) 383-8005.
Veterans with Disabilities Exemption
Homeowners with a service-connected disability may be eligible for a reduction in their property's equalized assessed value (EAV) through the Veterans with Disabilities Exemption.
Applications for the current 2023 Tax Year are closed, but if you want to learn more, please visit the Cook County Assessor's Office Veterans with Disabilities Exemption webpage or contact the Oak Park Township Assessor's office at (708) 383-8005.
Missing Tax Exemptions
If you are missing property tax exemptions, homeowners can apply for Certificates of Error(s) for tax years 2022, 2021, 202, 2019, and 2018. It is recommended to apply online using the Certificate of Error Application for Exemptions, but you can also download a Certificate of Error Application in English, Spanish, Polish, and Chinese and mail it to 118 North Clark St, Room 320, Chicago, IL 60602.
Frequently Asked Questions
Can I do anything to reduce my current tax bill?
If you are eligible for a homeowner, senior citizen or other exemption but did not receive one, the Township Assessor’s office can assist you in obtaining a revised bill for a smaller amount. If you have received all exemptions for which you are eligible, you likely will not be able to do anything about your current bill.
Can I do anything to reduce next year's tax bill?
Between July 1 and July 30, the Cook County Board of Review will accept appeals from Oak Park residents for next year’s taxes. Residents may call the Oak Park Township Assessor’s office during the appeal period to schedule an appointment to help prepare an appeal. Alternatively, residents can get help at the end of the appeal period by attending a tax appeal seminar sponsored by the Board of Review. The seminar will take place on July 30 at 6:30 PM at the Percy Julian Middle School auditorium, located at 416 S. Ridgeland Avenue in Oak Park.
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