If you think your assessment is too high, first check your tax bill to see if you are receiving all of the exemptions for which you qualify.  The next step is to look over your property record card, checking it for accuracy.  The property record cards are maintained by the St. Clair County Assessor.  If you are still unsatisfied, you may use one of the following appeal processes.

One appeal is to the elected three-member St. Clair County Board of Review. This appeal seeks to reduce the assessment, which helps set the next year’s property tax bill. The thirty-day period during which one can file this appeal begins when the St. Clair County Assessor revised assessments.

To file an appeal, you may contact the St. Clair County Board of Review:

St. Clair County Board of Review
St. Clair County Building
10 Public Square
Belleville, IL 62220
(618) 277-6600 ext. 2489, 2493, 2488
 

After receiving the Board of Review's decision, if you still  feel that your property is over assessed, you may appeal to the Illinois Property Tax Appeal Board.​  You may obtain the forms from the Board of Review.
 

The other appeal requires filing a Tax Objection Complaint with the elected Clerk of the Circuit Court. This appeal seeks to reduce the current year’s property taxes and is usually reserved for tax rate challenge. The Tax Objection Complaint must be filed within seventy-five days of the property tax 2nd installment due date. You may contact the Clerk of the Circuit Court as follows:

Kahalah Clay, Clerk of the Circuit Court
St. Clair County Building
10 Public Square
Belleville, IL 62220
(618) 277-6600 ext. 2334