Dean Sigmon serves as executive vice president and co-director of the Transwestern Mid-Atlantic Multifamily Group. As an accomplished asset management and investment sales professional, he has over 23 years of experience in the multifamily real estate industry.


Dean has been directly involved in the disposition of more than 40,000 multifamily units valued at over $4.2 billion. Among the noteworthy assets Dean has sold are: five-property portfolio in Northern Virginia (1,468 units for $350 million), the Dumont condos in Washington, D.C. ($167 million), The Chase at Bethesda, a luxury high-rise (sold for $467,000 per unit, the highest-ever recorded price per unit in Maryland) and the Middle River portfolio in Baltimore (more than 500 units).
Some of the companies Dean has represented include EQR, Archstone, Home Properties, AIMCO, The Bozzuto Group, Fairfield Residential, Angelo Gordon and UDR.
Prior to joining Transwestern, Dean was a principal at boutique brokerage firm IRG. He also handled property management for Oakwood Apartments and Post Properties/Ram Partners and hotel asset management for Radisson Hotels International. During his tenure there, Dean was responsible for managing a $1 billion portfolio for extremely high-net worth individuals, as well as life companies, REITs and institutional clients in the Mid-Atlantic and Southeast.


  • Real Estate Forum’s Top Multifamily Brokers – 2015
  • CoStar Power Broker
  • Institute of Real Estate Management member
  • National Multifamily Housing Council member
  • Multiple awards from R&B Apartment Management for Oakwood Apartments for individual asset performance and corporate leadership
  • Vice President of the Year for RAM Partners/Post Properties


Dean earned a degree in business management and completed Harvard Law School’s negotiation program.