A strong appeal clearly explains why your assessed value is too high and includes supporting documents.
Common evidence includes:
Assessment notice
Property record card
Interior and exterior photos
Repair or maintenance estimates
Comparable sales or assessments
Professional appraisal, if available
For commercial property, income and expense data when relevant
Your evidence should:
Be clear and organized
Directly support your claim
Address valuation errors or property condition issues
Well-prepared documentation can make a significant difference in the outcome.
Cook County Tax Appeals prepares complete residential and commercial appeal packages designed to meet Board of Review requirements.