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Welcome to DuPage Township Assessor's Office
DuPage Township is a WILL COUNTY Office
Ken Harris, CIAO, CPA
DuPage Township Assessor
OFFICE INFORMATION
9:00 a.m. - 4:00 p.m.
(630) 759-1315
Notary Service Available - No Charge
Bilingual Speakers are Available
Fax: 630-759-6163
Email:
Information@dupagetownshipassessor.com
Assessor@dupagetownshipassessor.com
DUPAGE TOWNSHIP OFFICES WILL BE CLOSED
01/19/2026 - Martin Luther King Day
* = 2026 Board of Review – Filing a Complaint
The Board of Review Appeal Portal will be open for submissions from August 10th, 2026, through September 14th, 2026.
Click on the link below to visit the Board of Review Appeal Portal:
https://borappeals.willcountysoa.com
Any change of assessments will also be published in local newspapers August 12th and August 13th, 2026.
To see the publication schedule, which includes what newspaper will publish changes in DuPage Township: The link will be provided later.
Notice to Township Residents
Property owners who disagree with their 2026 assessment may file an Assessment Review Inquiry through this website. The deadline to submit an inquiry is July 12, 2026. Filing an inquiry allows sufficient time to pursue a formal appeal, if necessary, should you disagree with the Township’s review. Please visit the appropriate tab on our website for instructions and the required form.
Assessment Information
Property assessments are set at one-third (33.33%) of fair market value.
Assessments are based on three years of adjusted, valid sales prior to the assessment date.
2026 assessments are based on sales from 2023, 2024, and 2025, not current market conditions.
Exemptions
Renewal exemption forms will be mailed mid-April 2026 by the Will County Supervisor of Assessments.
Homeowners may visit our office for assistance completing exemption forms. Please bring all required documentation, including:
New applicants may visit our office at any time for assistance. However, Low-Income Senior Freeze forms will not be available until mid-April 2026.
A detailed explanation of all exemptions is available under the Exemptions tab on our website.
General Homestead and Senior Exemptions increased beginning with the 2023 tax year (payable in 2024).
Total household income (for the Senior Freeze Exemption)
Appropriate documentation for disability-related exemptions
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TAX BILL INFORMATION:
How to understand your tax bill from the County - CLICK HERE
HOW DOES THE ILLINOIS TAX SYSTEM WORK? CLICK HERE to see how the Illinois Property Tax System works!
If you need to find your tax bill amount, visit website of Will County Treasurer at www.willcountytreasurer.com to review current bills and past bills.
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2024 Notices and Assessment Process Information:
DuPage Township received a 1.1114 multiplier from Will County for 2024. It has been a fast-rising market, and most of the townships in Will County have received large multipliers.
THE 2024 ASSESSMENTS ON THIS WEBSITE ARE NOT FINAL VALUES. THEY ARE VALUES AS OF THE PUBLISH DATE BY THE COUNTY. THEY DO NOT INCLUDE ANY CHANGES MADE AT THE LEVELS CURRENTLY OPEN. THE FINAL VALUES WILL NOT BE POSTED UNTIL THE BOARD OF REVIEW HAS CLOSED THE BOOKS AT THE END OF THE YEAR. IF YOU HAVE QUESTION ON ANY SPECIFIC VALUE, PLEASE CALL OUR OFFICE WITH THE PIN NUMBER AND WE WILL BE HAPPY TO HELP.
Notice values and multipliers are used for the 2024 tax bill, which is payable in 2025. Notices are not a bill!
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