Open Book refers to a period of time before Board of Review when the completed assessment roll is open for examination. At Open Book, the assessor is allowed to make any changes that are necessary to perfect the assessment roll. Instructional materials on appealing an assessment value to the Board of Review will be available. Please schedule an appointment at the assessor's open book session before filing a formal objection for the Board of Review. Appointments should be made by contacting Associated Appraisal Consultants Inc. at (800) 721-4157. All persons who have questions or concerns pertaining to their property assessment are encouraged to contact the assessor throughout the year.