Member Directory
Brokers

Richard Deptula
Friedman Integrated Real Estate
Rich Deptula has specialized in the sale of investment properties and loans throughout the nation since joining Friedman in 2004. Throughout his tenure, Rich has been involved in the closing of over 25,000 apartment units and 20,000,000 SF of CRE, with a total value of over $2 billion. Rich is one the nation's leading portfolio disposition specialists within the Friedman Investment Group.

Raffi Derbabian
Colliers
Raffi has been actively involved in commercial real estate since 1988 and has experience in all aspects of real estate brokerage activities. He has been engaged in managing sale/lease transactions along with providing real estate brokerage services to assorted institutional and private purchasers and sellers. In that regard, Raffi has specialized in the sale and leasing of commercial and industrial buildings throughout Southeast Michigan.
Notable clients have included Royal Maccabees Life Insurance, Allied Signal, Eagle-Picher Automotive, Ford Motor Company, Hagopian Carpet and Pontiac Osteopathic Hospital.
Raffi's real estate career began with Schostak Brothers & Company, Inc. When Insite Commercial Group, a Schostak affiliate was formed, he became a Vice President and continued to be one of the top producers within the company. He brought his expertise in commercial/industrial real estate sales to Colliers International in 2006.

Glenn N. DesRosiers
Friedman Integrated Real Estate
Glenn N. DesRosiers has been a successful real estate broker since 1993. Glenn joined Friedman Integrated Real Estate Solutions in the commercial/office leasing division in June of 2000 and became Vice President in 2004 and Senior Vice President in 2009. Glenn has completed over 727 lease and/or sale transactions totaling over $253 Million and 3.5 million square feet. He strives to develop and preserve standards of excellence resulting in long term client relationships, which he attributes to his accomplishments.

James Diehl
Pilot Property Group
Jimmy Diehl is a dedicated commercial and industrial real estate advisor with over a decade of experience helping clients navigate the complexities of buying, selling, and leasing property. Since entering the industry in 2011, Jimmy has built a reputation for hard work, sharp market insight, and an unwavering commitment to client success.
He specializes in landlord and seller representation, as well as buyer and tenant advisory services, always aiming to deliver solutions that are practical, strategic, and results-driven. Known for his attention to detail and client-focused approach, Jimmy brings professionalism and persistence to every transaction.
Whether representing a property owner or guiding a business through site selection, Jimmy's goal is the same: to provide clear advice, strong advocacy, and real results.

John Dinsmore
Lee & Associates of Michigan
CAREER SUMMARY
John Dinsmore earned his license in 1963 and has been successfully representing commercial and industrial real estate owners and tenants for over 40 years.
John specializes in the sale and leasing of all commercial property types including land sales and is focused on the Western Oakland, Livingston and North Washtenaw County markets.
EXPERIENCE
John commenced his commercial and industrial real estate experience in 1967 working in corporate sales and leasing, land acquisition and property management for Simone Corporation, a design/build company specializing in office and industrial properties and land development. He later owned and operated Dinsmore Realty Co., a commercial/office/industrial brokerage company. John was an Associate Broker with Friedman Real Estate Group in Farmington Hills, Michigan from 1993 until joining Lee & Associates in December, 2007.


