Residential, commercial, industrial, 25 years of service. Key Appraisals is a full service, real estate valuation company that has served the entire Chicagoland area and surrounding counties since 1980. Hal London, President of Key Appraisals, has served as a qualified and court stipulated expert witness, teaches state of Illinois Appraisal License and Certification course, and has been a keynote speaker on various real property and appraisal topics for Fortune 500 companies. You can contact us.