A trade organization designed to establish standards of competency in the appraisal industry. The designations MAI (competent by the institute's standards to appraise all types of real property) and SRA (competent to appraise residential property) are prestigious and heavily relied upon by real estate agents, lenders, governments and others who utilize appraisers. The American Institute of Real Estate Appraisers and the Society of Real Estate Appraisers combined in 1991 to form the Appraisal Institute.