A property tax assessment appeal is a formal request to challenge the Cook County Assessor's valuation of your property. It can be supported by legal strategy, valuation analysis, and data modeling that detects over-assessments, and may be filed with the Assessor, Board of Review, or PTAB.
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What is a property tax assessment appeal in Cook County?
Are You Overpaying?
Most Cook County homeowners are over-assessed. Check your potential savings in under a minute.
WHY CHOOSE US?
In 2025 our clients were 1.7 times as likely to win a reduction at the Assessor, and 1.3 times as likely at the Board of Review, as clients of attorneys who filed 100+ residential appeals (2.2 times at the Assessor in 2026 so far).
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Licensed Illinois tax attorneys & CPAs
3-tier escalation: Assessor → BOR → PTAB
Source: Cook County Assessor and Board of Review public appeal records. Past results do not guarantee a similar outcome.
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