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About me

Jason Lantz is a widely sought after criminal defense lawyer known for his tenacity in the courtroom, numerous not guilty verdicts and dismissals, and his compassion for clients.  


While he works on numerous types of litagation matters, his emphasis, is in DUI defense.   Jason has also represented clients charged with felonies and other misdemeanors including Assault, Malicious Mischief, Disorderly Conduct, Trespass, Theft, Reckless Driving, Reckless Endangerment, Racing, Negligent Driving in the First Degree, Hit and Run Unattended, Driving While License Suspended (all degrees), Possession of Drugs, Minor in Possession/Consumption, Telephone Harassment, Obstruction of a Law Enforcement Officer, Resisting Arrest, and Possession of a Dangerous Weapon.


Jason is originally from the Midwest and went to high school in a small town near Dodge City, Kansas.  He obtained a B.S. in Life Science from Kansas State University in Manhattan, Kansas.  A graduate of Seattle University School of Law, and winner of the In-House Moot Court Appellate Competition in 2008, Jason has built a reputation as an excellent lawyer.


Before becoming a lawyer, Jason was the Director of Operations for the American Red Cross of the Flint Hills.  Jason has always been a fierce advocate for individuals and families and is experienced in helping people in crisis.  Being charged with a criminal offense is a stressful event and Jason takes his job as a “Counselor of Law” seriously.


Practice areas


  1. DUI & DWI: 60%
  2. Domestic Violence: 30%
  3. Speeding Ticket: 5%
  4. Criminal Defense: 5%



Free consultation (60 minutes)

Payment types:

Cash, Check, Credit card

Attorney endorsements

9 total 

Are you an attorney? Endorse this lawyer

  • Michael S. Waddington

    I endorse Jason. He is a highly skilled attorney that is well respected in the legal community.


    Michael Waddington Military law Attorney
    Relationship: Fellow lawyer in community

  • John M. Tymczyszyn

    As a former prosecutor in the City of Everett I worked with Jason often. He has many cases in our court and was well respected as a tireless advocate for his clients. He examined cases from every angle and got results for his clients. I wholeheartedly endorse Mr. Lantz!


    John Tymczyszyn Criminal defense Attorney
    Relationship: Fellow lawyer in community

Contact info

Sullivan Law Group

11335 NE 122nd Way #105
Kirkland, WA, 98034

Sullivan Law Group

3209 Rockefeller Avenue
Everett, WA, 98201

Sullivan Law Group

11335 196th St SW
Lynnwood, WA, 98036



We have not found any instances of professional misconduct for this lawyer.
Avvo contributions
Legal answers
Award nameGrantorDate granted
Dean's ListSeattle University School of Law2010
Moot Court Winning TeamSeattle University School of Law2008
Work experience
TitleCompany nameDuration
AttorneySullivan Law Group2011 - Present
AttorneyLaw Office of Jason Lantz2011 - 2011
Association namePosition nameDuration
Washington Association of Criminal Defense LawyersMember2012 - Present
Citizens for Judicial ExcellenceDirector2012 - Present
Washington State Bar Association, Criminal Law SectionMember2010 - Present
Washington State Bar AssociationMember2010 - Present
Legal cases
Case nameOutcome
State v. T.S.Not Guilty after Jury Trial
City of Kirkland v. S.P.Not Guilty after Jury Trial
H.B. v. EverettDismissed
See all legal cases 
School nameMajorDegreeGraduated
La Pier and AssociatesN/AField Sobriety Test Administration2014
Seattle University School of LawN/AJD - Juris Doctor2010
Kansas State UniversityLife ScienceBS - Bachelor of Science2002
Speaking engagements
Conference nameTitleDate
Snohomish County Public Defenders AssociationDraeger Alcotest 9510 Practice Pointers2015
Snohomish County Draeger Litigation Working GroupDraeger Alcotest 9510 - Undertanding Washington's new Breath Test Machine2015