How to file a Will County property tax appeal.

Step 1: verify the official filing path

Use Will County's Supervisor of Assessments and Board of Review complaint resources to confirm the current complaint method, required forms, due date, and evidence submission requirements.

Do not rely on a template page as the filing itself. The official portal or complaint form is the filing path.

Step 2: choose the appeal basis

The appeal basis should match the evidence: market value, comparable equity, property-record correction, condition issue, recent purchase price, or exemption treatment.

Write the current value and requested value before opening the form. That keeps the filing focused.

• Current assessed or market value shown by the record.
• Requested corrected value or fact.
• One primary reason for the request.
• Evidence list tied to that reason.

Step 3: attach the best documents

Use a short evidence packet: comparable sales, appraisals, closing documents, photos, repair estimates, inspection notes, property record corrections, or exemption support.

Label each attachment with the issue it supports so the Board reviewer does not have to guess why it is included.

Step 4: save proof of filing

After filing, save the submitted form, confirmation page, emails, uploaded attachments, and the official deadline source used to file.

If anything is mailed or delivered physically, keep receipts and copies.

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