Dates to Remember

Assessment Year 2023

Notice Mailing Date:

Thursday, December 7th, 2023

Publication Dates:

Thursday, December 7th, 2023 for Oak Brook Doings, Lombardian, Downers Grove Suburban Life Newspaper, and Villa Park Review

Friday, December 8th, 2023 for Elmhurst Suburban Life

Final Filing Date:   January 8th, 2024

General Dates to Know

All properties are assessed as of January 1st of the tax year.

Senior Citizen Assessment Freeze applications and status cards for the Senior exemption are mailed by the Supervisor of Assessments Office.

First installment of the property tax bill is due.

Second installment of the property tax bill is due.

Late Fall
Assessment revisions must be completed by November 15th of the current assessment year. Change of assessment letters are mailed and published for all parcels that show a change in the total assessment from the prior year. During a General Reassessment year, every four (4) years, notices are mailed and published for ALL parcels whether or not a change occurred in the total assessment. Taxpayers have 30 days from the date of publication to file an appeal of their assessment for the current year. For exact mailing and publication dates for the current assessment year, please check the DuPage County Supervisor of Assessments website at: in a new window or feel free to call our office at 630-627-3354.