Real estate appraiser. WesTech Appraisal Services specializes in residential real estate appraisals. Our clients include major banks and lending institutions, including credit unions, mortgage brokers and legal professionals. Our real estate appraisal services include mortgage financing, asset management, relocation, divorce settlement and investments. Our highly qualified appraisers are members of the Appraisal Institute of Canada. Our real estate appraisers can help you determine your property value.