Office:   800.919.0577 

  • LinkedIn - Black Circle

Matthew D. Massar has a diverse practice focused on commercial real estate, natural resources, and business matters. He represents a variety of clients looking to navigate the legal issues associated with ownership transactions, ongoing management, and reorganization of specialized property types (whether commercial, agricultural, residential, or assets produced through ownership of same) - utilizing his unique business background and seasoned legal experience to provide timely, reasoned and valuable advice.


Mr. Massar performed his undergraduate studies at the Hankamer School of Business at Baylor University in Waco, Texas (where he earned a degree in Business Administration with an emphasis in Public Administration / Economics), and earned his law degree from St. Mary's University School of Law in San Antonio, Texas (serving as a staff writer on / senior editor of The Scholar Law Review, and being a member of the Phi Delta Phi Legal Honors Fraternity).

Outside of the practice of law, Mr. Massar serves on the board of directors and membership committee for the Alamo Kiwanis Club, enjoys spending time with his wife and 2 children, and is actively engaged with the community through the game of golf, numerous other volunteer and community organizations, and beyond.

Licensure & Admissions:  

  • Law - Texas

  • Law - Oklahoma

  • Law - U.S. District Court for the Southern District of Texas

  • Real Estate - TREC-Licensed since 2020

Certifications & Designations:  

  • Certified Texas Mediator (per TX CPRC §154.052 [a]; 2009 - present)

  • Designated Member, Texas Bar College (2019 - present)



  • Best S.A. Lawyers - SA Scene Magazine (2020)

  • Lawyer Monthly Legal Awards - Business & Corporate / USA (2020)

  • US Business News Legal Elite Awards - Best Real Estate & Business Law Firm / Texas (2019 - 2020)

  • SA Rising Star Lawyer - SA Scene Magazine (2018, 2019)


Professional Affiliations:

  • AIPN JOA Model Contracts Drafting Committee, Association of International Petroleum Negotiators (2013 - 2015)

  • AIPN Young Negotiators Committee; Association of International Petroleum Negotiators (2013 - 2014)

  • Clay Shoot Committee, Urban Land Institute-Houston (2013 - 2014)

  • Moot Court Judge, University of Houston Law Center (2013)

  • Steering Committee, Houston Downtown Alliance Emerging Leaders (2012 - 2013)

  • Future Economists Mentor, Houston Economics Club (2012 - 2014)

  • State Bar of Texas Real Estate, Probate and Trust Law Section (2009 - present)

  • State Bar of Texas Environmental and Natural Resources Law Section (2009 - present)

Community/Civil Involvement:

  • Board of Directors, Alamo Kiwanis Club (2019 - present)

  • Membership Committee, Alamo Kiwanis Club (2018 - present) 

  • Member, San Antonio Quarterback Club (2016 - present)

  • Member, Texas Wildlife Association (2007 - present)

  • Member, Baylor University Alumni Association (2002 - present)


Massar Law Firm PLLC works with numerous other attorneys in co-counsel, of-counsel, and independent contracting capacities.  If you have a matter that requires joint representation or are interested in working with us, please click here to contact us today.  




Office:   512.636.9444


  • LinkedIn - Grey Harris

Benjamin Grey Harris has conducted extensive legal research, drafted complex transactional documents, composed detailed legal opinions in numerous jurisdictions, and planned short and long-term legal strategies for clients in both the private and public sectors.  He is a proactive problem solver and communicative attorney who enjoys challenges and overcoming obstacles.


Mr. Harris has a practice including title examination and curative work, as well as due diligence matters.  He counsels small to large oil and gas operators in their goal to achieve producing properties through long range planning, title examination, and state and federal regulation.  Prior to private practice, Mr. Harris was a landman with extensive experience in the Permian Basin and the Eagle Ford.


Prior to joining the firm, Mr. Harris worked for a small firm in Austin, Texas specializing in the areas of real estate, construction, business litigation, and insurance. 


  • Texas Christian University (B.A., Communications & Criminal Justice,  2005)

  • St. Mary’s University School of Law (J.D. 2009)


  • Texas

  • New Mexico

Professional Affiliations:

  • State Bar of Texas (Oil, Gas and Mineral Law Section) 

  • Austin Professional Landmen’s Association (Member)

  • Young Professionals in Energy (Austin Section)

Community/Civil Involvement:

  • TCU Alumni Association (Austin Chapter)

  • Eagle Scout

  • Austin Fly Fishers (Member)