J. Mark Weiss

Family Law Attorney, Mediator


  • (206) 622-6707




Law Office of J. Mark Weiss, P.S.

100 W. Harrison St., South Tower, Ste. S470

Seattle, Washington 98119

Among the most experienced Collaborative Lawyers in the state, Mark's practice is limited to helping clients reach and implement resolutions that are based on their own priorities, values and goals. Mark trains other professionals in the Collaborative Law process. He has helped clients through their divorces for over 30 years. Recipient of the 'Attorney of the Year" award from the Washington State Bar Family Law Section, and rated a "Super Lawyer" annually since 2007 by Washington Law & Politics Magazine, and the recipient of the 2018 President's Award of Collaborative Professionals of Washington.


Speaker and trainer on Collaborative Law, negotiation, and dispute resolution, including co-founder of Seattle Collaborative Law Training Group ( Has received extensive Collaborative Law and facilitative negotiation and mediation training. Fellow, American Academy of Matrimonial Lawyers. Certified Divorce Financial Analyst.