William S. "Bill" Thomas

4.6 (38 reviews )

St. Louis Missouri United States

Construction Law Litigation - Construction

Recognized in Best Attorney USA since 2019

314-257-9800 Website

About William

William S. Thomas: Experienced Trial Lawyer in Construction Law, St. Louis

William S. 'Bill' Thomas is one of our firm's many experienced trial lawyers, with a diverse practice that emphasizes complex litigation. His areas of expertise include construction law and litigation - construction.

Practice Areas:

Civil Jury Trials
Complex Litigation
Litigation - Construction
Product Liability Litigation - Defendants
Professional Malpractice Law - Defendants
Medical Malpractice Law - Defendants
Litigation - Environmental
Civil Rights Litigation
Criminal Defense

Affiliations:

Firms: Gausnell, O'Keefe & Thomas LLC
Professional Organizations:
- Lawyers Association of St. Louis (Former President)
- DRI - Defense Research Institute (Product Liability Committee; Building Products and Power Tool Specialized Litigation Groups, Construction Committee, Professional Liability Committee; Design Professional Subcommittees)

Education:

B.A., University of Notre Dame (1990)
J.D., Saint Louis University School of Law (1995)

Bar Admissions:

Missouri, United States (1995)

Awards:

Limited to the Awards provided in the original bio: Lawyer of the Year: Construction Law, St. Louis (2025), Lawyer of the Year: Construction Law, St. Louis (2023), Lawyer of the Year: Litigation - Construction, St. Louis (2022)

Recognized Since:

Recognized in Best Attorney USA since 2019.

City:

St. Louis, Missouri, United States

Practice Areas

Construction Law

Litigation - Construction

Education

Saint Louis University

University of Notre Dame

Awards & Recognition

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Reviews

4.6 / 5

38 Reviews

1,064 Profile Views

Shari O'Keefe

Jan 30, 2026

Solid work and professional service from William S. "Bill" Thomas in St. Louis for Missouri residents

Solid experience overall with the law firm of William S. "Bill" Thomas. They know Construction Law inside and out and gave me great advice. Very helpful and got the job done exactly as they said they...

Blake Moen

Jan 30, 2026

Many thanks to William S. "Bill" Thomas for the hard work and dedication to my legal matter

Really glad I found William S. "Bill" Thomas for my case. They were a huge help and made everything understandable. I was very impressed with their knowledge and how they handled the opposition. If yo...

Jean Abbott

Jan 30, 2026

A huge weight off my shoulders thanks to the amazing work of William S. "Bill" Thomas

I've already told all my friends and family about William S. "Bill" Thomas. If you need Construction Law help in Missouri, they're the ones to see without any doubt. They are local experts who really...

Ed Klein

Jan 30, 2026

Simply amazing representation from William S. "Bill" Thomas's office during my recent legal matter

Honestly, I can't thank William S. "Bill" Thomas enough for everything they've done for me. They really know their stuff when it comes to Construction Law and it shows in the results. 10/10 would reco...

Judy Prosacco

Jan 30, 2026

Top notch experts in St. Louis - William S. "Bill" Thomas is by far the best lawyer I've ever had

Super helpful and professional staff at William S. "Bill" Thomas's office. Thanks again for everything you did for me! It was a long journey, but you made it much easier with your constant support and...