For the full picture, see our guide to the Illinois Property Tax Appeal Board.
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Can I appeal beyond the Board of Review?
Yes. After the Board of Review's final decision you may appeal to the Illinois Property Tax Appeal Board (PTAB), a state agency—but only if you first filed with the Board of Review. The PTAB deadline is 30 days from the later of the Board of Review's written decision or the date the Board sends its final action on your township to the Assessor; a petition sent by mail counts as filed on its postmark date. Strong evidence (comps, appraisals, commercial income data) is important. A Circuit Court tax objection (after paying the bill) is another option.
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ATTORNEYS & CPAs, EVERY VENUE
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 with 100+ decided residential appeals (2.2 times at the Assessor in 2026 so far, as of October 29, 2026).
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Every level: Assessor → Board of Review → PTAB or Circuit Court
Source: Cook County Assessor and Board of Review public appeal records. Past results do not guarantee a similar outcome.
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$0 Upfront cost — no fee unless your assessment is reducedOur fee is 25% of first-year savings, only if your assessment is reduced.
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