Assessors and appraisers determine the value of land, businesses, estates and other real property, for purposes of sale, purchase, taxation or disposal of assets. Appraisers also determine the value of personal and household items. Business valuators quantify the value of a business, its securities or its intangible assets. Assessors, business valuators and appraisers are employed by government agencies, real estate firms and other private companies, or they may be self-employed.