The Tartan Team


Mike Porterfield


Michael Porterfield assumed control of Tartan Properties Commercial, a family owned business in operation for over 35 years, in 2000. From its inception, this independent commercial real estate brokerage firm has specialized in sales and leasing of office, industrial, and flex properties in the Northern Virginia market. Their focus remains on representing small to mid-sized clients and offering customized, creative and personal attention to both landlords and tenants. Now in its second generation, TARTAN has expanded its practices to include servicing trade associations, non-profit organizations, public affairs and law firms, and local retailers.  However, TARTAN has not forgotten its roots in the Northern Virginia industrial and flex real estate market where they still represent warehouse owners and many service-related business. TARTAN is very proud to continue to represent two of its original clients, dating back to 1973.  Mike is an expert on Alexandria and Arlington, Virginia, commercial real estate.

Mr. Porterfield is active in his community. He currently serves on the board of directors of the Alexandria Small Business Development Center, is former board member of the Alexandria Chamber of Commerce, is the past chair of the board of trustees for the Scholarship Fund of Alexandria, and is a graduate of Leadership Alexandria. As a native resident of Alexandria, Mr. Porterfield has a clear understanding of the Northern Virginia and Washington, D.C., area and he has a wealth of contacts in the region to provide comprehensive service and networking for his clients.  In 2016, the Senior Services of Alexandria honored Mike along with his mother, Kitty Porterfield, and his daughters Keely and Kirby Porterfield at the Generation-to-Generation Gala for their longstanding commitment to service in the Alexandria community.

In 2000, he took a leave of absence from real estate to pursue his other passion–rowing–and coached two American women to a Bronze Medal in the Olympic Games in Sydney, Australia. As an athlete, Mr. Porterfield competed in five World Championships as a member of the US National Team and was inducted into Northeastern University’s Athletic Hall of Fame in 2003. He has also coached at Georgetown and Northeastern Universities as well as at T.C. Williams High School. Mike’s wife Emily is an elementary school teacher in the Alexandria City Public Schools and a former NCAA champion soccer player at the University of North Carolina. Mike is an avid cyclist and CrossFit athlete. He is a father of three: his oldest daughter currently serves as an officer in the US Army, the second daughter is an aspiring comedic actress in New York City, and a son in college at Northeastern University.


Stephen Beggs


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.


Amanda Keiser

Marketing Coordinator

Amanda Keiser started at TARTAN in 2019 after graduating from the University of Limerick in Ireland.  After seventeen years as an Irish dancer and four years working professionally in Ireland, Amanda moved back to her hometown of Alexandria to pursue a professional career in marketing. Being able to combine her passion for marketing with a love for her community makes TARTAN a perfect fit.  Amanda is in charge of developing and executing marketing strategies for listing properties and the company, as well as transaction management.

After growing up in Old Town, Amanda decided to move to Limerick, Ireland in 2015 to pursue her dream of dancing professionally. While getting a BA in Irish Music and Dance at the Irish World Academy within the University of Limerick, Amanda worked part time as a professional Irish dancer. Some high points of her career include multiple weekend performances in London, private shows at Glin Castle, and performing for the Lord of the Dance, Michael Flatley.  Her last professional performance was at the Washington DC conference center, performing for 8000, and dancing with other students from the University of Limerick.  Although Amanda loves performing, after four years away from home, she was ready to come home and start her second career.

Amanda is currently pursuing a graduate degree in Real Estate from Georgetown University with a focus on development and plans to graduate Spring of 2023.


Fatimah McGarrell

Sales & Leasing Associate

Fatimah McGarrell joins the Tartan team as a Sales and Leasing Associate. Her focus is representing small and mid-sized office tenants to lease and purchase commercial space throughout Northern, VA. She is a passionate advocate for her clients in helping them execute the real estate needs of their business.

Prior to joining Tartan, she spent two years at Capital One in the Enterprise Data & Machine Learning division as a financial analyst. Her passion for Real Estate was ignited while working with the U.S. Marshals Service as an analyst in their real property department. Fatimah continued her career in asset management at JLL, one of the nation’s largest commercial real estate services companies.

She is originally from Philadelphia, and moved to D.C. to attend The George Washington University where she earned a degree in Political Science. She currently lives in Morningside, MD with her husband Ryon where they are renovating their first home.

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