Mason has over 30 years of practice experience. He is board certified by the Texas Board of Legal Specialization in Tax law and in Estate Planning and Probate Law. He works with a wide array of clients in estate planning, probate, estate and trust administration, tax controversies, tax planning, real estate and business entity planning, buy-sell planning, acquisitions, mergers, sales, succession transfers by gifts, and charitable planning, foundations, like kind exchanges, franchisee representation, and disputes involving beneficiaries and fiduciary matters. He has been involved in many notable transactions and cases. Fellow: Section on Real Property, Texas; Probate and Trust, Texas; Section on Taxation, Texas; San Antonio Estate Planners Council; San Antonio Bar Foundation; College of the State Bar of Texas; Texas Academy of Estate Planning and Probate Law.