If you do not believe you could sell your property on the open market for the amount of the county appraisal, you can appeal your value by filing a Complaint Against the Valuation of Real Property. This form can be found on the Auditor’s webpage or you can call the Auditor’s Office at 330-740-2010 to request the form by mail. Appeals may be submitted by mail or in person to the Auditor’s Office in the County Courthouse Building between January 2 and March 31 each year. Filing this form will formally initiate the appeal process with the Mahoning County Board of Revision. Detailed information regarding the appeal process and the Board of Revision can be found here.