Mary Llewellyn’s unwavering dedication, professionalism, and results-driven approach are the reasons clients return to her again and again—while also referring their family and friends. She has built her career on genuine relationships, exceptional client care, and a commitment to excellence, establishing herself as one of the most trusted and respected names in real estate across the Maryland/DC region.
Providing the highest level of customer service has always been Mary’s top priority. Her extensive knowledge, combined with a passion for continuous education, has fueled her success and earned her recognition as one of the top agents nationwide.
Awards & Recognition
Over the years, Mary has consistently been recognized by America’s Best Real Estate Professionals, RealTrends, RateMyAgent, FastExpert, HomeLight, and HomeSnap. She has received multiple Top 10 Keller Williams Maryland/DC Region awards and has been named among America’s Top 100 Agents (Top 1%) for several consecutive years.
Mary’s vision and leadership have also shaped The Llewellyn Group, the high-performing real estate team she built from the ground up. Under her guidance, the team has grown into one of the most successful groups in the region, achieving top production rankings and earning numerous industry honors year after year.
Leadership & Growth
Guided by the belief that “a man’s dreams are an index to his greatness,” Mary made a bold career move after eight years with her previous brokerage. In 2008, she joined Keller Williams Realty, drawn by the company’s culture, training, and growth opportunities. Just two years later, she launched her own Keller Williams franchise in Hagerstown, Maryland—expanding her vision into one of the area’s top-producing real estate teams.
Personal Life
Born and raised in Hagerstown, Mary is deeply rooted in her community. She and her husband, Marc, have been married for over 41 years and have two sons. Outside of real estate, Mary enjoys gardening, evenings on the water with her boat, and spending time with family. She looks forward to enjoying her retirement at their lake property in Tennessee.
