Mike Porterfield assumed leadership of Tartan Properties Commercial in 2001, a business his father had started in 1973. Under Mike’s direction, Tartan has expanded its size, services and client base to include trade associations, nonprofit organizations, public affairs firms, law practices, and local retailers—while maintaining a strong presence in the industrial and flex markets that formed the foundation of the business. With deep expertise in the Alexandria, Fairfax and Arlington commercial real estate markets, Mike is recognized as a trusted advisor with a wealth of regional knowledge and longstanding relationships.

In recognition of his leadership and service, Mike was named to the inaugural Alexandria Chamber of Commerce 40 Over 40 list in 2025 and the Small Business of the Year in 2019. He has also been inducted into the Athletic Halls of Fame at both his alma mater, T.C. Williams High School, and Northeastern University, where he competed as a world-class rower and represented the United States in five World Championships. Beyond competing, Mike has coached at Georgetown and Northeastern Universities, as well as at Alexandria City High School, and notably guided two American athletes to a Bronze Medal at the 2000 Olympic Games in Sydney, Australia.

Mike is also deeply engaged in his community. He serves on the board of Move2Learn and is a former board member of the Alexandria Small Business Development Center, the Alexandria Chamber of Commerce, and the Scholarship Fund of Alexandria. He is a graduate of Leadership Alexandria and, in 2016, was honored with his family at the Senior Services of Alexandria’s Generation-to-Generation Gala for their longstanding commitment to community service.

A lifelong Alexandrian, Mike brings unmatched local insight and a strong professional network to his work. Outside the office, he is an avid cyclist and CrossFit athlete. His wife, Emily, is an elementary school teacher with Alexandria City Public Schools and a former NCAA champion soccer player at the University of North Carolina. Together, they are the proud parents of three children.

Stephen Beggs joined TARTAN in 2014 after nine years at Transwestern, where he specialized in the leasing and sale of office and industrial properties in the Northern Virginia real estate market. As a principal at Tartan, he has brought industry knowledge and creative deal-making to leasing transactions, and buyers and sellers of real property.  Over the course of his career, Steve has overseen transactions with a total value exceeding $100 million, and has represented many notable institutions such as ING Clarion, Washington REIT, REEF (Deutsche Bank), Liberty Mutual, Akridge, Northwestern Mutual and Peter Lawrence of Virginia.

For his work in the industry, Steve’s work has been recognized by his peers.  He was named a CoStar Power Broker each year from 2007 to 2011 and was part of the team chosen as winner of the Washington Business Journal’s “Industrial Deal of the Year” in 2009. After graduating from James Madison University, Steve was an art teacher and athletics coach  for a small private school. Now when not closing real estate deals, he is on the trails running, playing soccer, or performing live music with local bands. He is a native Alexandrian and lives with his wife and two daughters in the Del Ray section of his hometown. He currently serves on the city’s Parks & Recreation Commission.

Ryan Cramsey is the newest member of the Tartan team, bringing more than 20 years of commercial brokerage experience and a renewed focus on Northern Virginia tenant representation. Known for his client-first approach, Ryan takes pride in helping business owners lease or purchase the right commercial property to meet their needs. Over his career, he has successfully negotiated hundreds of transactions spanning multifamily investment, office, industrial, and retail properties. Ryan launched his brokerage career in 2002 with Commonwealth Commercial Inc., a boutique Reston, VA firm specializing in flex and industrial tenant representation. His experience expanded during several years in West Palm Beach, FL, where he served as in-house retail leasing agent for a regional shopping center owner. Returning to Northern Virginia, Ryan joined KW Commercial, resuming his focus on tenant representation before spending the past three years with Philadelphia-based SCOPE Commercial Real Estate Services, where his team specialized in multifamily investment sales nationwide.

A Northern Virginia native, Ryan lives in Old Town Alexandria with his wife and their English bulldog, Booboo. Outside of work, he enjoys biking around town with Booboo in tow and supporting the local community through regular Volunteer Alexandria events.

Fatimah Wilson joined Tartan Properties in 2021, bringing a strong blend of real estate expertise and corporate-level experience. She began her career as an Asset Manager with JLL, where she managed diverse portfolios and built a foundation in valuation, asset strategy, and client service. She later advanced to Capital One as a Financial Analyst, further developing her skills in financial modeling and investment analysis that now inform her work in commercial real estate.

Today, as a Principal at Tartan, Fatimah specializes in medical office as well as retail and office sales, representing both owners and investors throughout the D.C. metro region. With over five years in the business, she is recognized for her background in property valuation, marketing strategy, and asset management. Licensed in Maryland, Virginia, and Washington, D.C., she is sought after by first-time buyers, seasoned investors, and business owners alike. Clients value her attentive approach, sharp market insights, and commitment to delivering results.

Passionate about real estate investing, Fatimah also takes pride in educating aspiring investors on how to identify opportunities in emerging markets.

A proud Philadelphia native, Fatimah earned her BS in Political Science from George Washington University. Outside of work, she enjoys going to plays and musicals, indulging in a good murder mystery, and seeking out the perfect sandwich.

Kay Chewning joined TARTAN in 2022, bringing with her over 20 years of industry-wide experience.  Kay started her career in commercial real estate as an owner’s representative where she worked for such local, national and international property owners at West*Group, Tishman Speyer and Vornado Charles E. Smith.  As part of an in-house leasing team, Kay honed her knowledge of asset management, marketing and leasing.  Leveraging off of this knowledge base, Kay transitioned into third-party brokerage and soon represented both owners and occupiers with all aspects of the commercial real estate needs, including leasing and sales of office, flex, medical, and retail space.

Over the years, Kay has won such industry awards as the Greater Washington Commercial Real Estate (GWCAR) top producer award as a Developer Representative (2008, 2009, 2010, 2011).  In addition, Kay sat on the Board of Directors for CREBA and its predecessor GWCAR for 7 years and oversaw the Education Committee for 2 years.  

As a pro-bono member of the Carpenter’s Shelter Real Estate Committee, Kay worked with a team of Alexandria leaders to guide the shelter through a 3-year relocation and redevelopment endeavor which has resulted in a state-of-the-art shelter and complementary support program helping people facing and overcoming homelessness.  

Kay is a graduate of Tulane University with a BS in Psychology, and the Université Américaine de Paris with a Paralegal Degree in International Law.  She is a life-long Alexandria resident active in the DMV commercial real estate market.  

Kay recently bought a 250-year-old former “tavern” in Loudoun County and is in the process of undertaking an ongoing period renovation.

Kay is a licensed salesperson in Virginia, Washington, DC, and Maryland.