Steps: (1) confirm your township's appeal window is open (~30 days, strict); (2) review your assessment for errors or overvaluation; (3) gather evidence (comparable sales/assessments, condition issues, appraisals; commercial: income/expense, vacancy); (4) file online with the Assessor and, if needed, the Board of Review; (5) await the decision—reduction, no change, or a request for more info.
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