Real Estate Appraiser business. Good with numbers and values? Start a real estate appraisal business. Business Overview Real estate appraisers are specialists in estimating the value of land and the structures on that land. Real estate appraisals are commonly required when people buy a home, sell a home, apply for or renew a mortgage, for insurance purposes, to settle estates, and to settle divorce cases. It is the job of the real estate appraiser to prepare a written...