Mil “Flip” Wallen, a 41-year veteran of the commercial real estate industry, specializes in commercial/mixed-use and data center/mission critical construction, design, and development with significant experience building a variety of product types in the region.

He is the founder and owner of TRINITY Group Construction (TGC), established in 2002, an awarding winning construction company and one of the leading commercial builders in the Washington, D.C. metro area. Prior to founding TGC, Flip worked his way up through Southland Concrete and Tucon Construction/Landstar Development companies for over 20 years. During this period, he became an expert in developing retail, preschools, medical, hotels, and assisted living facilities. He has also invested his practice in life sciences and laboratory construction.

Flip directs the construction pricing and implementation for Ox Hill Real Estate Development. His focus on the latest technology trends keep his approach fresh, new, and innovative, surpassing industry standards.

Flip has become one of the most trusted sources of knowledge, wisdom, and leadership in the metro D.C. development and construction market, where he has developed and built millions of square feet in the market.

He is a graduate of James Madison University with a BBA in Management Information Systems.