About Sydney:

214-236-5842 txt or mobile



Sydney M. Alexander grew up in Abilene, TX, on his family’s ranch.  His friends and clients call him by his nickname, “Mack”.  His grandfather, a Major League Baseball player with the NY Giants, an avid outdoorsman, and beloved Mayor of Abilene, was his mentor and greatest inspiration.  Mack moved to North Texas in his early twenties to pursue a career in the banking industry. With his family’s legacy in real estate, ranching, and community service, he ultimately began a successful career in the family business.  

Enabled by his disarming West Texas manner, clients and friends quickly came to rely upon his expertise.  Mack’s tenacious work ethic and endurance make him a truly unique personality and formidable advocate for his clients’ real estate interests. Mack’s years of experience have resulted in over 1,000 residential home sales in the DFW Metroplex and has garnered lasting relationships with industry resources. 

Starting out as a new home sales and marketing professional, Mack was quickly promoted to upper management with national custom and production builders. Selling commercial properties, Farm and Land across the state of Texas, and new homes gives him breadth and depth in all aspects of the industry. Mack is a true expert in his field. As a Texas Realtor® and Georgia Broker, he is supremely dedicated to serving his clients with creativity and innovation. 

By working with his daughter in Ashli Allen Group, Mack continues his family heritage in real estate. Specializing in Southlake, Westlake, Trophy Club, Keller, Colleyville, Grapevine, Coppell, Arlington, the nationally ranked community of Viridian (close to Globe Life Park, AT&T Stadium, and UTA), Plano, Frisco, and consulting in Ranch and Land.  


When Mack is not working with his clients, he is enjoying time with his dog Shadow, watching a local high school sporting event, riding motorcycles with his wife, telling a good West Texas story, or walking the land on his ranch.