MASON INVESTMENT GROUP - Key Persons


Jaymie Tenpenny

Jaymie's life is and has always been rooted in the value of family. Everything she has accomplished personally and professionally has been driven by her true passion of building strong families and relationships. Out of college, Jaymie, along with a business partner founded "A Perfect Day," a full-service wedding/event consulting firm. As Jaymie and her husband decided that it was time to concentrate on the branches of their own family tree, she decided that she was being led into a direction away from the strenuous schedule that was the wedding business. After some time at home concentrating on her own small children, Jaymie discovered a new passion-helping friends and family members find homes. She found that she loved hearing and seeing the feelings that new home owners had when they found "their dream home." After encouragement from her family, Jaymie decided that her sales and marketing background, coupled with this passion for real estate, was a perfect fit to accomplish the career goals she had for herself. After completing real estate school, Jaymie found a home to start her career in the office of Keller William's Southlake. Through over three years of gaining knowledge and experience, she used the resources that a large real estate broker offers to build a firm foundation and gain confidence in her trade. When approached with the opportunity to join Mason Investment Group, Jaymie found that the Masons' goal of providing excellent service with integrity was exactly the same as the ideal on which she had based her whole career. Whether it's a family looking for the perfect environment to raise their children, or a buyer looking to make a sound investment to better the future of their family, the vision of MIG fit perfectly into Jaymie's idea of what a real estate team should be and should strive to accomplish for its clients. Jaymie and her husband raise their two young sons in North Fort Worth, TX. In her spare time she loves interior design, cooking, and finding time to volunteer where she can, including teaching Sunday School at her church in Grapevine.

Justin Mason

Job Titles:
  • Broker
  • Member of the National Association of Realtors
Justin was born and raised in the Fort Worth area and is very familiar with the local real estate market. While he did not formally begin his real estate career until 2012, he always had an interest in real estate and real estate investing. He and his wife, Theresa, created Mason Investment Group, LLC in early 2012, and Justin began working with investor clients who were looking to purchase rental properties. He gained a lot of experience early on in residential real estate transactions, leasing and property management, and at the same time, began building his reputation as a successful Realtor and business man. He obtained his Broker's license in August of 2017. He enjoys working with homeowners looking to buy or sell properties in the DFW area, as well as local residential real estate investors. Justin served five years in the United States Navy. After completing his honorable service, he served the City of Arlington, Texas as a police officer for six years. He has a bachelor's degree from the University of North Texas and a master's degree from the University of Texas at Arlington. Justin also sings and plays country music throughout the DFW area and State of Texas. He and his wife/business partner reside in Grapevine and have 3 children. Justin is a member of the National Association of Realtors (NAR), the Texas Association of Realtors (TAR) and the Grapevine Chamber of Commerce. Justin is also a certified Veteran's Land Board (VLB) Realtor.

Keith Hotop

Keith Hotop was born and raised in Southeast Missouri. He has always had a heart towards service and helping others, which has fueled his career paths. He graduated with his doctorate of physical therapy in 2013 and soon afterwards moved to Texas and began working at a local hospital as a physical therapist. He and his wife bought a house in Grapevine and through the house buying process he developed a growing interest in real estate. After continuing to learn more about the DFW real estate market, he made the decision to pursue his real estate license. Becoming a licensed real estate agent has provided Keith with another opportunity to combine one of his many passions with his heart for helping others. He looks forward to developing relationships with his clients, collaborating with them, and guiding them through the process of buying or selling their home. Keith enjoys spending his free time with his wife, Jolee, and their young daughter. He is an active member at their church in Grapevine. He is also a member of the National Association of Realtors (NAR) and the Texas Association of Realtors (TAR).

Theresa Mason - COO, VP

Job Titles:
  • COO
  • Vice President
Theresa has always had an entrepreneurial spirit. Upon graduating from the University of Notre Dame, she went into business with her mother painting wall murals. This first company, Wall2Wall Art, LLC paved the way for her next business venture, W2W Painting, LLC. As president of this residential and commercial painting company, she learned many business management skills and developed a passion for business growth and development. She also discovered her desire to use these skills to give back to the community. This desire led to the birth of R.O.L.L. O.N., a non-profit organization that distributes home building supplies and materials to disaster relief charities and other community organizations. Despite staying busy with these companies, Theresa jumped on the opportunity to go into business with Justin as they began to talk about the potential of a real estate company. Theresa's experience in business combined with Justin's knowledge and passion for real estate made the creation of Mason Investment Group, LLC (MIG Real Estate) possible. Together, their individual talents and skills along with the support of their team allow MIG Real Estate to perform at an elite level. Theresa stays very active in her church and in the community. She served as the President of the Notre Dame Club of Dallas in 2010; she served as a member of the City of Grapevine's Planning and Zoning Commission from 2013-2017; and she currently serves on the Grapevine Chamber of Commerce Board of Directors as the immediate Past-Chair. Theresa is a proud mom of 3 little ones, loves listening and attending Justin's shows and looks forward to continuing to grow this great company!