Looking For An Appraiser? Boardman Appraisal - Servicing all of Northern Michigan for 26 years/MACKINAC ISLAND – County appraisal experts. As licensed appraisers, we have the education and qualifications to give you the level of dependable property value opinions that banks and national lending institutions require for home loans. With years of experience behind us, we're prepared to tackle practically any type of real estate.