Andrew Dorchester, FRICS, CRE is a valuation economist. Unlike appraisers who develop estimates of value, he more squarely focuses on the economic underpinnings of influences that drive value. In this capacity serves as an arbitrator, litigation support specialist, advisor, expert witness, and forensic investigator. His “bent” is in ensuring that valuations and other expert work involving economic questions are developed in a way that are meaningful, not misleading, properly supported and developed, and are understandable. He has been involved in over $1-trillion worth of litigated claims where valuations are contested, working on matters such as the land damage claims from the Exxon Valdez oil spill, alleged plutonium contamination from the Rock Flats nuclear weapons plant, multiple ground water contamination cases involving hundreds of thousands of residential properties, valuations disputes with involving transactions as far back as 1795, and other complex matters. He has also worked as forensic appraisal investigator for multiple departments and agencies in the federal government and has examined thousands of appraisals in that capacity. He has developed and taught courses on appraisal fraud for the FBI Academy and lectured multiple times at the FBI headquarters in Washington, DC. He served for five years as the Managing Director of Cushman & Wakefield’s Dispute Analysis & Litigation Support practice, overseeing the largest litigation team of real estate appraisers in the United States. He is a former commissioner for District of Columbia’s Real Property Tax Appeals Commission, the appellate body for all property tax appeals in Washington, and presided over 550 hearings, issuing opinions in each of those matters, involving value disputes during his tenure.