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About me

Jason is an experienced family law attorney and mediator at Socius Law Group PLLC. He is an advisor, skilled negotiator, and formidable litigator assisting clients on a wide range of family law matters, particularly in areas involving complex financial, property, and custody issues. Jason’s diverse clientele range from prominent executives, entrepreneurs, business owners, and professionals to elected officials, celebrities, trust beneficiaries, and non-working spouses.

The diversity of Jason’s clientele is matched by the sophistication and intricacy of the issues he handles for his family law clients, including stock and executive compensation plans, asset tracing, trusts, tax, real and commercial property, and business interests, as well as high-conflict child custody and parenting issues.

Jason is a trained litigator; comfortable in trial and frequently appearing in court to advocate for his clients. He is also a no-nonsense client counselor and advisor, providing his clients with candid analysis and strategies for identifying and reaching client goals through negotiation and, when necessary, litigation.

Outside of his litigation work, Jason also works with clients to develop a wide range of relationship agreements, including: prenuptial and postnuptial agreements, cohabitation agreements, and assisted reproduction agreements.

Jason frequently speaks on family law issues, including prenuptial agreements, the Defense of Marriage Act, and the conversion of domestic partnerships to marriage in Washington state.


Practice areas


  1. Family: 100%

Attorney endorsements

3 total 

Are you an attorney? Endorse this lawyer

  • Natalie Rosenbaum De Maar

    I endorse this lawyer. Jason is a smart and hardworking attorney. He is a pleasure to work with.


    Natalie De Maar Divorce and separation Attorney
    Relationship: Fellow lawyer in community

  • 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

Contact info

Socius Law Group, PLLC

Two Union Square
601 Union St., Suite 4950
Seattle, WA, 98101


We have not found any instances of professional misconduct for this lawyer.
Avvo contributions
Legal answers
Award nameGrantorDate granted
AV Rated PreeminentMartindale Hubbell2013
Work experience
TitleCompany nameDuration
ShareholderStokes Lawrence2009 - Present
AttorneyMcKinley Irvin2007 - 2009
AttorneyK & L Gates1999 - 2007
Association namePosition nameDuration
International Academy of Collaborative ProfessionalsMember2015 - Present
King County Collaborative LawMember2015 - Present
Washington State Bar AssociationMemberN/A
King County Bar AssociationMemberN/A
National LGBT Bar AssociationMemberN/A
Washington State Bar Association, Family Law SectionMemberN/A
American Bar FoundationFellowN/A
American Bar Association, Family Law SectionMemberN/A
QLaw- GLBT Bar Association of WashingtonPast President2013 - 2015
University Family YMCABoard of Managers2013 - 2015
ArtsFundAssociate2012 - 2014
Publication nameTitleDate
LexisNexis Practice Guide: Washington Family LawChapter 6, "Division of Property"2016
Stokes Lawrence Washington Divorce & Family LawWho Gets Custody of Pets in a Divorce?2015
Washington State Bar Association Bar NewsDomestic Partnership and the Law2007
School nameMajorDegreeGraduated
Willamette University College of LawLawJD - Juris Doctor1999
Bard CollegeN/ABA - Bachelor of ArtsN/A
Speaking engagements
Conference nameTitleDate
The Seminar Group CLE5th Annual Complex & High-Asset Divorce Seminar2016
Defense of Marriage Act: DOMADefense of Marriage Act: DOMA2014
King County Bar Association CLEHow to Prepare a Prenuptial Agreement Case2013
Family Law SpectacularDOMA, Windsor, and Washington State2013
Family Law Hot TopicsLitigating Prenuptial Agreements2013
What Every Attorney Should Know About...What Every Attorney Should Know About Family Law2010
Successfully Representing Non-Traditional FamiliesAdoption for Non-Traditional Families2008
King County Bar AssociationCommencement and Procedure, Dissolution from A-Z2008