Gretchen M. Wallacker
Awarded Practice Areas
Biography
Gretchen M. Wallacker is a Certified Family Law Specialist and has practiced family law exclusively for three decades. In that time, she has helped countless families transition out of their marriages, settling a full spectrum of complex family law matters that involve child custody, visitation, child support, spousal support, and property division, including division of high net worth estates.
Drawing on her geographical focus in San Francisco, the Peninsula, and Silicon Valley, Gretchen understands the Bay Area's unique economic climate and the range of related sophisticated financial issues. And when it comes to child-related disputes, she understands the highly sensitive nature of these matters and does her best to help parents reach agreements that prioritize their family.
Gretchen focuses her practice on Alternative Dispute Resolution processes that include mediation, settlement judging, consulting, coaching, and Collaborative Divorce. Whether as a mediator, settlement judge, consulting attorney, or Collaborative Counsel, Gretchen strives to minimize the emotional and financial cost to her clients and their families. She believes that resolving matters outside of court allows parties to retain more control of the divorce or separation process and reach a resolution that is specifically tailored to their lives and situation.
And if a client is embarking on cohabitation or marriage, Gretchen skillfully prepares and reviews premarital, post-marital, and cohabitation agreements. She offers a variety of process options to create these agreements, including more traditional negotiations between counsel, collaborative 4-way meetings with counsel and clients, and mediation with consulting attorneys.
Overview
- The University of Michigan Law School, J.D., graduated 1993
- California, The State Bar of California, 1993
- American Academy of Matrimonial Lawyers - Fellow
- Association of Certified Family Law Specialists - Member
- Collaborative Practice San Mateo County - Member
- International Academy of Collaborative Professionals - Member
- International Commission on Couple and Family Relations - Member
- San Francisco County Bar Association - Member
- San Mateo County Bar Association - Member
- San Mateo County Superior Court Family Law Mediation Referral Panel - Member
- California, The State Bar of California, 1993
- American Academy of Matrimonial Lawyers - Fellow
- Association of Certified Family Law Specialists - Member
- Collaborative Practice San Mateo County - Member
- International Academy of Collaborative Professionals - Member
- International Commission on Couple and Family Relations - Member
- San Francisco County Bar Association - Member
- San Mateo County Bar Association - Member
- San Mateo County Superior Court Family Law Mediation Referral Panel - Member
- The University of Michigan Law School, J.D., graduated 1993
Client Testimonials
Awards & Focus

- Family Law, San Francisco (2026)
- Family Law, San Francisco (2024)
- Family Law, San Francisco (2020)
- Family Law
- Family Law Mediation
- Collaborative Law: Family Law
James M. Dennis Memorial Award, San Mateo County Bar Association, 2024
Top 10 Northern California Attorneys, Thomson Reuters Super Lawyers, 2022
NorCal Chapter Fellow of the Year, American Academy of Matrimonial Lawyers, Northern California, 2018
Top 100 Northern California Attorneys, Thomson Reuters Super Lawyers, 2015-present
AV Preeminent Rating, Martindale-Hubble, 2009-present
Top 50 Northern California Women Attorneys, Thomson Reuters Super Lawyers, 2009-2010, 2014-present
Northern California Super Lawyer, Thomson Reuters Super Lawyers, 2005-present
News & Media
Additional Information
- LEADERSHIP POSITIONS
- Past President, American Academy of Matrimonial Lawyers, Northern California, 2022
- Mentor, Diversity Equity and Inclusion Mentor Group, American Academy of Matrimonial Lawyers, Northern California, 2021-present
- President, American Academy of Matrimonial Lawyers, Northern California, 2021
- President-elect/Secretary/Legal Counsel, American Academy of Matrimonial Lawyers, Northern California, 2017-2020
- Co-Chair, Mentoring Committee, American Academy of Matrimonial Lawyers, Northern California, 2015-2020
- Co-Chair, Bi-annual Trial Practicum, American Academy of Matrimonial Lawyers, Northern California, 2012, 2018
- Chair, Collaborative Practice San Mateo County, 2003
- Chair, San Mateo County Bar Association, Family Law Section, 2002
- Co-chair, San Mateo County Bar Association, Family Law Section, 2001
- SPEAKING CREDITS
- Presenter, “Co-Mediation with a Neutral Financial,” San Mateo County Bar Association, Family Law Section, 2022
- Presenter, “Child Custody Evaluation Legal Update,” Santa Clara Psychological Association, Custody Evaluator and Domestic Violence Training, 2019
- Moderator, “Tips for Mediators and Consulting Attorneys,” American Academy of Matrimonial Lawyers, Northern California Symposium, 2018
- Presenter, “Spousal Support Update,” Collaborative Practice California, 11th Annual Statewide Conference, 2016
- Presenter, “Divorce Options,” Collaborative Practice San Mateo County, Periodic
- Presenter, “Second Saturday Divorce Workshops,” Second Saturday, Periodic
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