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David T O'Sullivan

David T O'Sullivan

Practice areas:

Divorce & Separation, Mediation, Bankruptcy & Debt, Real Estate, Domestic Violence

About Me

At the O'Sullivan Law Group, we provide comprehensive family law legal services to our clients.  While most "family" law firms focus primarily on divorce and matrimonial related matters, the services provided by the O'Sullivan Law Group extend well beyond traditional "divorce & matrimonial" law firm.


While we provide professional legal services in the areas of divorce and related matters, we also provide legal services in the areas of:


Estate Planning

Real Estate -- Commercial and Residential


Personal injury



And many other areas.


If it touches you or your family, we stand ready to assist you with your legal needs.


Practice Areas

Licensed since 2006

  1. Divorce & Separation: 50%
  2. Bankruptcy & Debt: 20%
  3. Mediation: 20%
  4. Domestic Violence: 5%
  5. Real Estate: 5%



Free Consultation (60 minutes), Pro Bono (10%)

Payment Types:

Cash, Check, Credit Card

Attorney Endorsements

5 total 

  • No photo

    I endorse this lawyer. Dave is a fine Bankruptcy lawyer who is not only well versed in the Law, but energetic and dedicated.


    Brian O'Sullivan Bankruptcy & Debt Attorney
    Relationship: Fellow lawyer in community

  • Christian K. Lassen

    Top-notch attorney. Highly respected in the legal community.


    Christian Lassen Personal Injury Attorney
    Relationship: Fellow lawyer in community

Contact Info

Law Office of David T. O'Sullivan

191 Washington St.
Morristown, NJ, 07960-3756



Professional Misconduct

We have not found any instances of professional misconduct for this lawyer.
Avvo Contributions
Legal Answers
Work Experience
TitleCompany NameDuration
OwnerLaw Office of David T. O'Sullivan, LLC2010 - Present
Managing PartnerSimeone & O'Sullivan, LLP2006 - 2010
Judicial Clerk to Hon. Katherine Dupuis, J.S.C.Superior Court of New Jersey1993 - 1993
Judicial Clerk to Hon. David G. Lucas, J.S.C.Superior Court of New Jersey1992 - 1993

Association NamePosition NameDuration
New Jersey State Bar Association, Bankruptcy Law SectionMember2008 - Present
New Jersey State Bar AssociationMember2006 - Present
Morris County Bar AssociationMember2006 - Present
New Jersey State Bar Association, Family Law SectionMemeber2006 - Present

School NameMajorDegreeGraduated
Seton Hall UniversityLawJD/MBA - Juris Doctorate and MBA1992
Boston UninversityFinanceBS - Bachelor of Science1985

Speaking Engagements
Conference NameTitleDate
NJ Divorce Q&A Webinar SeriesDivorce in NJ2015
Understanding Divorce in New JerseyDivorce in New Jersey2009