Message From Your Assessor, Mary Mahady

Hello McHenry Township Residents!
We have submitted our 2023 assessment values to the County. Our publication date is yet to be determined, so please contact me for updates. We will post that information when it becomes available.
I urge you to open and review the assessment notice that will be mailed to you within the next few weeks. Please pay attention to the indicated fair cash value and also the exemptions that are shown to be currently on your property. If you have any questions on anything on the assessment notice, please call my office as my staff and I are happy to answer any questions you may have. If your situation is one that requires an in-person meeting, we will gladly set that up.
Assessment Complaint Forms are available through the following link:
You may also obtain forms from my office. We will again be asking that you call the office to make an appointment if you would like assistance with the complaint forms.
We will be hosting an Assessment Appeal Workshop here at the Township shortly after the Assessment Notices are mailed. Please watch for that information on our webpage or our Facebook page.
Mary Mahady, C.I.A.O.
McHenry Township Assessor
If you have questions, please feel free to contact my office or email me at

McHenry Township Assessor Mary Mahady

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