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Assessor's Office

The County Assessor's Office will be accepting appeals for Lemont township 2019 assessed values through July 15, 2019.  One can appeal in person at any of the Cook County Assessor's Offices or online at  Also, one can contact the Lemont Township Assessor's Office at 630-257-2522 to schedule a personal appointment.

The Lemont Township Assessor’s Office continues to serve the community with property assessment and tax issues that residents may have. This office is our local source for assistance to appeal assessed values, apply for Homeowner, Disabled Persons, Disabled Veterans, Senior, and Senior Assessment Freeze exemptions.

The office also processes building permits, maintains a database containing assessed values, sales, and transfers information.

To receive direct information regarding assessment appeal dates one can join our email notification list.

Helpful links for other agencies:

Office Hours: 7:30am - 3:00pm

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Kenneth C. Jacobowski CIAO

Township Assessor

Joyce Black

Assessor Administrative Assistant