your team
What is a CCIM?
A Certified Commercial Investment Member (CCIM) is a recognized expert in the disciplines of commercial and investment real estate, and an invaluable resource to owners, investors, and users of commercial property. Fewer than 6 percent of the estimated 125,000 commercial real estate practitioners nationwide hold this designation, placing CCIMs among an elite corps of approximately 8,600 professionals across North America and more than 30 countries.
CCIMs are trained and tested in four essential areas—financial analysis, market analysis, user decision analysis, and investment analysis—and must document a substantial portfolio of closed transactions and consultations before passing a comprehensive exam. This rigorous process ensures CCIMs are proficient in both theory and practice, which is reflected in their collective annual volume of roughly 156,000 transactions totaling more than $400 billion.
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Patty I. Brown, CCIM
President/Principal Broker
Patty Brown is President and Principal Broker of Marathon Realty Group Inc. (MRGI), a full-service commercial real estate brokerage she has led for more than twenty-five years. A CCIM designee—a credential held by fewer than five percent of commercial real estate professionals—she advises owners, investors, and institutions on land sales, office condominiums, leasing, investment sales, and tenant representation. She is committed to providing clients with the insight and tools necessary to achieve their real estate objectives.
Paul McNeal
Vice President
Paul McNeal is Vice President of Marathon Realty Group Inc. He specializes in operational execution, client relationships, and strategic growth. A serial entrepreneur, Paul founded The Sturgeon Group AMT and has led multiple ventures to successful exits. A U.S. Navy veteran, he brings disciplined leadership and an execution-focused approach to client success.
Peg I. Connell
Property Manager
Peg Irby Connell, Building Operations and Maintenance for Marathon Realty Group Inc., Commercial Property Assets Division. She has 30 years of management experience. Pre-Law, Political Science, Abilene Texas University, Abilene, Texas.
Jeffery Shumaker
Associate Broker
Jeff Shumaker has over 20 years of experience in real estate specializing in leasing, sales, and investment strategy for commercial properties throughout Northern Virginia, Washington, D.C., and Maryland. His background includes mortgage lending, construction, and CAT insurance adjusting.
Graeme Ebert
Property Management Assistant
​Graeme Ebert is part of the Commercial Property Management Division at Marathon Realty Group Inc. A graduate of Hampden-Sydney College, he brings a principled, results-driven approach grounded in honor, leadership, and accountability. He focuses on strong tenant relationships, operational excellence, and clear communication to deliver long-term value.
Costi Tirnoveanu
Facilities Engineer
Costi Tirnoveanu is a facilities engineer responsible for overseeing building operations, maintenance, and system coordination across properties. He works on HVAC systems, electrical, plumbing, and life safety systems to ensures reliable performance and efficient day-to-day operations.
Sergio Lima
Maintenance Technician