Departments
Assessor’s Office

Assessor’s Office

Welcome to the Township of Lemont Assessor's office!

We are first and foremost your local property tax advocate. Our office provides many services to the residents of Lemont Township:

Filing for Homeowner, Senior, Senior Freeze, Disability and Veterans Exemptions

Assistance to residents with completing Certificate of Error

Assistance to residents with completing Certificate of Error forms for any exemptions not received, which may result in a property tax refund

Assistance with filing appeals to the Cook County Assessor

Assistance with filing appeals to the Cook County Assessor and the Cook County Board of Review **Lemont is not yet open for appeals for 2024. Follow the links below to learn more:

Requesting a tax bill

Change of name and address

Access to Sidwell (Township property) maps

To Apply for past exemptions, you may use the below Certificate of Error form

Need to check on the status of a Certificate of Error that has been previously submitted. Click the button below.

With the release of Cook County 2023 Second Installment Property Tax Bills, homeowners should check to make sure they are not missing property tax-saving exemptions on their bills. Homeowners are encouraged to review the bottom left corner of the tax bill to confirm their exemption deductions. Most homeowners are eligible for the Homeowner Exemption, which saves an average of approximately $950 dollars. Senior homeowners over 65 are likely eligible for additional property tax savings with the Senior Exemption.