Bills rise from changes in assessed value or tax rates. Common causes: higher assessed value, a township reassessment (three-year cycle), local taxing districts raising rates, property improvements/renovations, or losing an exemption. If you believe the assessment is too high, you can appeal during your township's window.
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Why did my property tax bill increase so much?
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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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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