IL HB1812

Amends the Property Tax Code for counties with 3,000,000 or more inhabitants (Cook County) regarding board of review decisions on property tax assessment complaints

Limits board of review decisions on agent-filed complaints to evidence presented by the complainant/agent, county assessor, and taxing district, restricted to grounds and documents filed with the petition

Requires a 30-day period for complainants or their agents to review and rebut board decisions before any assessment can be revised and corrected

Guarantees oral hearings upon request of any complainant or complainant's agent

Beginning with the 2026 assessment year, simplifies board decision documentation requirements by removing the mandate to explain how the assessor's method was erroneous; decisions must now be transmitted to the county assessor, complainant, and complainant's agent