Mark A. NacolMark A. Nacol

Board Certified, Civil Trial Law
Texas Board of Legal Specialization

Nacol Law Firm P.C.

Walnut Glen Tower
8144 Walnut Hill Lane, Suite 1190
Dallas, Texas 75231
Metro: (972) 690-3333


Mark Adam Nacol, the founding member of The Nacol Law Firm, is board-certified in Civil Trial Law by the Texas Board of Legal Specialization. A tireless advocate for his clients, he has tried cases to verdict in state and federal courts across Texas and has received an AV Preeminent® rating from Martindale-Hubbell, which is reserved for attorneys ranked at the highest level of profession excellence by their peers. He is also an Associate with the American Board of Trial Advocates, a Fellow of the Texas Bar College, and a Member of the Dallas Bar Association 100 Club.

Mark was born and raised in Wichita Falls, and his parents, who were small business
owners, impressed upon him at an early age the value of hard work and the importance of using his talents to help others. Mark took those words to heart, and embarked upon a career in law that has spanned over 50 years and has allowed him to provide advice and assistance to hundreds of wonderful Texans from all walks of life.

Mark attended the University of Texas at Austin, where he joined the Sigma Nu fraternity. After receiving a B.A. in Psychology with a concentration in English and Philosophy from UT Austin, Mark continued his studies at the South Texas College of Law, where he was a member of the Delta Theta Phi law fraternity. He earned a J.D. in 1974 and was admitted to practice later that year.

Mark has been a principal in several different firms since his admission to the State Bar
of Texas. He formed The Nacol Law Firm, P.C. in 1974, and was thrilled when his son, Julian, joined the firm in 2017. A skilled trial lawyer and negotiator, Mark currently focuses on civil litigation involving business and commercial transactions; divorce and family conflicts; intellectual property; real property, including HOA issues; and wills and probate.

Bar & Court Admissions

  • State Bar of Texas, 1974
  • U.S. Supreme Court, 1982
  • U.S. Tax Court, 1980
  • 5th U.S. Circuit Court of Appeals, 1984
  • U.S. District Court for the Northern District of Texas, 1974
  • U.S. District Court for the Eastern District of Texas, 1991
  • U.S. District Court for the Western District of Texas, 1993


  • B.A. in Psychology, University of Texas at Austin, 1971
    Honors: Sigma Nu fraternity, Debate Team
  • J.D., South Texas College of Law, Houston, Texas, 1974
    Honors: Delta Theta Phi law fraternity

Professional Associations & Memberships

  • Texas Board of Legal Specialization – Board Certification in Civil Trial Law
  • Fellow, Texas Bar College
  • Associate, American Board of Trial Advocates
  • Dallas Bar Association
  • President, Mesquite Bar Association, 1978–79

Mark Nacol’s Areas of Practice:
Divorce & Family Law

  • Child Custody, Support, & Visitation, Including Enforcement & Modification of Prior Orders
  • Division of Assets
  • Fathers’ Rights
  • Grandparents’ Rights
  • Paternity
  • Pre- & Post-Nuptial Agreements

Civil Law

  • Construction Law – Construction Defects, Contractor & Subcontractor Conflicts,
    Homebuilder & Seller’s Warranty Disputes, Mechanic’s Liens
  • Consumer Fraud & Deceptive Trade Practices
  • Contract Disputes
  • Insurance Coverage
  • Intellectual Property
  • Tort Liability

Business, Commercial, & Corporate Law

  • Business Planning & Contract Negotiations
  • Employment Matters – Breach of Fiduciary Duty, Violation of Non-Disclosure
    Agreements, Wrongful Termination
  • Formation, Operation, Purchase, & Sale of Small Businesses – Corporations, Limited Liability Companies, & Partnerships
  • Joint Ventures
  • Officer & Director Liability
  • Shareholder Disputes

Probate Matters & Wills

  • Advance Healthcare Directives, Living Wills, & Medical Powers of Attorney
  • Durable Powers of Attorney
  • Guardianship
  • Living & Special Needs Trusts
  • Probate Administration
  • Wills – Drafting & Execution, Suits Against Executors for Breach of Fiduciary Duty &
    Misapplication of Funds, Will Contests

Real Estate Property Law

  • HOA Law – Rights & Responsibilities of Property Owners
  • Home Construction Contracts
  • Lien Disputes
  • Mineral Rights
  • Neighbor Conflicts
  • Purchase & Sale of Commercial & Residential Real Estate

Arbitration and Mediation


8144 Walnut Hill Lane
Suite 1190
Dallas, Texas 75231
Office Hours
Monday – Thursday, 8am – 5pm
Friday, 8:30am – 5pm




Attorney Mark A. Nacol is board certified in Civil Trial Law by the Texas Board of Legal Specialization