Hans Mumper serves as an Executive Advisor to Robertson Properties Group. In this capacity Hans is directly responsible for the leasing of the firm’s 5,000,000 square foot mixed-use portfolio, as well as being directly involved in the acquisition, disposition, development and general operations of the firm’s investments and assets. Prior to joining Robertson Properties Group, Hans was an Executive Managing Director at Colliers International where he was responsible for all aspects of the commercial real estate business for Colliers’ eleven Southern California offices. He also served as the Senior Vice President, Southern California at Grubb & Ellis Co., Senior Vice President, Portfolio Manager for Bentley Forbes and Senior Director of Acquisitions and Leasing for USAA Realty Company. Throughout his career, Hans has been steadfastly dedicated to guiding those firms, and their clients, in achieving their commercial real estate goals. Hans sat on the Colliers Board of Advisors and was named as one of the most influential business people in Los Angeles by the Los Angeles Business Journal. Hans is a graduate of Occidental College in Los Angeles.