A commercial real estate appraiser estimates the value of a commercial property. In this role, your responsibilities include inspecting a commercial building and assigning a value based on factors such as size, features, and the cost of similar properties. You can perform your appraisal duties for several different reasons. Some appraisers estimate value for tax purposes, while others work for real estate buyers, sellers, or investors. Insurance companies hire appraisers to assess the value of insured properties. You can work on the staff of an appraiser company or as an independent contractor and charge a fee for each appraisal. A new appraiser works as a trainee until they receive their license.