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About Me

William S. Thomas graduated with a B.A. in Government from the University of Notre Dame in 1991, where he also received a Certificate from the Hesburgh Program in Public Service. He received his J.D. from Saint Louis University School of Law in 1994, earning an Outstanding Academic Achievement Award. He was Articles Editor for the Saint Louis University Public Law Review.

Bill was admitted to the Bar in Missouri in 1994 and the Bar in Illinois in 1995. He is also admitted to practice in the United States District Courts for the Eastern District of Missouri and the Central and Southern Districts of Illinois and the Eighth Circuit Court of Appeals. He has handled cases from the trial to appellate levels in Missouri and Illinois State and Federal Courts.

Bill is an active member of The Missouri Bar, serving on several committees, The Lawyers Association of St. Louis, and The Bar Association of Metropolitan St. Louis. He is an active member of the Defense Research Institute, serving on its Products Liability and Construction committees.

Bill devotes his practice to trial work, primarily representing design professionals or other construction professionals in litigated matters. He also assists design professionals on contract reviews and consultations. In addition, he works on complex product liability or commercial litigation matters.


Practice Areas


  1. Construction & Development: 50%
    21 years
  2. Litigation: 25%
    21 years
  3. Commercial: 20%
    21 years
  4. Contracts & Agreements: 5%
    21 years

Attorney Endorsements

3 total 

  • Jason L Call

    I worked with Bill for several years in St. Louis. He is one of the most hard-working, competitive and energetic lawyers I know. I endorse Bill without reservation.


    Jason Call Personal Injury Attorney
    Relationship: Friend

  • Michael Terrence Harrison

    I endorse this lawyer.


    Michael Harrison Personal Injury Attorney
    Relationship: Fellow lawyer in community

Contact Info

Pitzer Snodgrass, P.C.

100 S. 4th Street
Suite 400
Saint Louis, MO, 63102-1821


ILActive And Authorized To Practice Law199508/17/2015
MOGood Standing, Active199401/08/2013

Professional Misconduct

We have not found any instances of professional misconduct for this lawyer.
Avvo Contributions
Legal Answers
Award NameGrantorDate Granted
Super Lawyer - Construction LawMissouri and Kansas Super Lawyers (2008, 2013, 2014, 2015)2008
"Up and Coming Lawyer"Missouri Lawyers Weekly2007
Work Experience
TitleCompany NameDuration
Law Student InternSt. Louis County Prosecutor's Office1993 - 1994
Legal InternUnited States Attorney's Office, Eastern District of Missouri1993 - 1993
Legal InternCircuit Court Of The City Of St. Louis, Hon. Richard Mehan1992 - 1993
Association NamePosition NameDuration
Harmonie GroupBoard of Directors2011 - Present
Lawyers Association of St. LouisPresident2008 - 2009
Publication NameTitleDate
For the DefenseDesign Professional Ethics2011
DRI Defense Library Series, Construction Litigation Desk Reference: A State-By-State CompendiumMissouri Construction Law2010
Missouri Bar CLE Deskbook Series, Construction LawConstruction Contracts: Risk Shifting Devices2009
For the DefenseFair Housing Act Amendments: Celebrating 20th Anniversary in Obscurity2008
Missouri Bar CLE Deskbook Series, Professional LiabilityDesign Professional Liability2005
Missouri Lawyers WeeklyProfessional Responsibility for Design Documents2000
Defense Counsel JournalDefending Design Professionals: Is Contract Language an Adequate Shield?1997
School NameMajorDegreeGraduated
Saint Louis University School of LawN/AJD1994
Notre DameBAGovernment, Public Service1991
Speaking Engagements
Conference NameTitleDate
WebinarClaims Against Design Professionals – 5 Things to Do and 5 Things Not to Do2015
Law of Construction Defects and Failures, SeminarLiability for Construction Defects and Failures2014
DRI Product Liability ConferenceLiability of Product Manufacturers Complying with Performance Specifications in Design/Build Projects – Liability for ‘Delegated Design’2014
WebinarUnderstanding Claim Exposures and Contractual Risk Transfer2013
Professional Development SeminarsProfessional Liability of Engineers and the Standard of Care,”2013
Mini Law School for the Public, Missouri Bar Speaker SeriesProfessional Responsibility: The Responsibilities Design Professionals Have to Protect their Clients and the Public2013
Hall & Company AE Resource WebinarUnderstanding Claim Exposures and Contractual Risk Transfer2013
Minimizing Engineering Liability ExposureUnderstanding Liability Under Contract2012
Willis 17th Annual Construction Risk Management ConferenceUnderstanding Claim Exposures and Contractual Risk Transfer2011
Harmonie Regional Construction ConferenceIndemnity, Insurance and Additional Insured Status “ A Loss Prevention Primer2011
St. Louis Chapter of ASHRAEArchitect & Engineer Liability for Indoor Air Quality/Mold2010
Harmonie Regional Construction ConferenceMulti-Party Claims and Third Party Practice in the Construction Context2010
Construction Contracts A-ZEthical Considerations in Construction Contracting2010
BAMSL Bench and Bar ConferenceHandling the High Profile Case in the Information Age2010
Lloyds of London International SeminarJury Leanings When Times are Lean: An Assessment of Juror Decision-Making and Trends in Damage Awards Amidst the Worst Economic Downturn in Decades2009
Legal Issues for Missouri Design ProfessionalComplying with Missouri Rules and Regulations on the Practice of Professional Architecture and Engineering2008
Legal Issues for Missouri Design ProfessionalsProfessional Conduct and the Standard of Care2007
Harmonie-China International Law SymposiumProduct Liability: Depositions of Parties, Corporate Representatives, and Mediation Strategies2006