Andrew Zabronsky

Top rated Estate & Trust Litigation attorney in Orinda, California

Hartog, Baer, Zabronsky, APC
Andrew Zabronsky
Hartog, Baer, Zabronsky, APC

Practice Areas: Estate & Trust Litigation, Estate Planning & Probate; view more

Licensed in California since: 1984

Education: University of California College of the Law, San Francisco

Selected to Super Lawyers: 2010 - 2024

Hartog, Baer, Zabronsky, APC

4 Orinda Way
Suite 200-D
Orinda, CA 94563 Visit website


Andrew Zabronsky is the principal attorney at the law firm Hartog, Baer, Zabronsky & Verriere APC, located in Orinda, California. He has gained immense legal experience being in the field for over 38 years. His practice areas include trust, estate and probate law matters.

Individual beneficiaries and trustees, professional fiduciaries, financial institutions, privately held companies, charities, and charitable foundations are just a few of the diverse clientele that Mr. Zabronsky serves. He is authorized to practice in California, the U.S. District Court for the Northern District of California and the U.S. Court of Appeals for the 9th Circuit.

Mr. Zabronsky is a dedicated and determined defender of the rights and freedoms of his clients. He has tried and defended countless lawsuits, trust administration petitions, elder abuse cases, accounting cases, and accusations of breach of trust. He assists his clients in navigating the trust and estate legal proceedings and clarifies complex legalese in a straightforward and understandable way.

Graduating cum laude, Mr. Zabronsky received his bachelor’s degree from Union College and went on to study law at the University of California, Hastings College of Law. He earned his Juris Doctor in 1984 and received his license to practice law from The State Bar of California the same year.

A committed advocate in the legal community, Mr. Zabronsky is a member of the American Bar Association, The State Bar of California and The Bar Association of San Francisco and is a fellow at The American College of Trust and Estate Counsel. He also is a former member of the California Lawyers Association’s Executive Committee of the Trusts and Estates Section as well as a former chair of its Litigation Committee.

In addition to litigating trust and estate law cases, Mr. Zabronsky is frequently called upon to deliver seminars in renowned conferences statewide. He wrote the Breach of Trust chapter for the two-volume practice manual California Trust and Probate Litigation, CEB. He has been listed in The Best Lawyers in America for his notable legal work.

Practice areas

Estate & Trust Litigation, Estate Planning & Probate

Focus areas

Estate Planning, Probate & Estate Administration, Trusts, Will Contests

  • 90% Estate & Trust Litigation
  • 10% Estate Planning & Probate

First Admitted: 1984, California

Professional Webpage:

Verdicts/Settlements (Case Results):
  • Bradley v. Gilbert (2009) 172 Cal.App.4th 1058
  • Conservatorship of Coombs (1998) 67 Cal.App.4th 1395
  • Estate of Condon (1998) 65 Cal.App.4th 1138
  • Estate of Herold (2008) 162 Cal.App.4th 983
  • Fellow, American College of Trust and Estate Counsel (ACTEC)
  • Member, San Francisco Superior Court Probate Department Mediation Panel
  • Recipient, 2021 – 2022, “Best Lawyer in America”
  • Recipient, 2010 – 2022, Super Lawyers®
  • Past Editor and Executive Editor , California Trusts and Estates Quarterly
Scholarly Lectures/Writings:
  • Chapter 21: Breach of Trust, California Trust and Probate Litigation (CEB 1999 - 2020)
  • Chapter 5: No-Contest Clauses and Other Obstacles to Litigation, California, Trust and Probate Litigation (CEB 1999 - 2020)
  • “Immunizing Yourself from the Class Action Virus,” California Bankers Association’s 2002 Trust and Investment Conference, 2002
  • “Closely Held Businesses and Real Estate in Trusts,” National Trust Real Estate Association Conference, 2004
  • “Diversification Issues: A Litigator’s Perspective,” Sonora Annual Trust & Tax Forum, 2005
  • “Drafting No-Contest Clauses Under the New Law,” ACBA Trusts & Estates Section’s Ninth Annual Estate Planning Symposium, 2009
  • “A Square Peg in a Round Hole? Civil Law and Motion Pleadings in Probate Proceedings” with the Hon. William A. McKinstry (ret.) Probate and Mental Health Institute of the Administrative Office of the Courts, Education Division, 2009
  • CEB panelist in programs in San Francisco, Sacramento and San Jose on Estate and Trust Litigation and on Will Contests, 2001, 2002, 2004, 2009, 2011, and 2012
  • “Trust Litigation 2.0,” Southern California Trust and Estate Planning Forum, 2014
  • “Litigating Financial Elder Abuse Claims,” Legal Assistance for Seniors, 2014
  • “Enforcement of Judgment Against Trust Beneficiary's Interest,” Southern California Trust and Estate Planning Forum, 2015
  • “Challenges to the Validity of Trusts and Estates,” CEB, 2016
  • “Viability of No Contest Clauses Under Current Law,” Bar Association of San Francisco, 2017
  • “Probate and Trust Litigation Year in Review,” Bar Association of San Francisco, 2018-2019
  • “Out-of-State Practitioners in Our Midst? The Impact of Birbrower and Estate of Condon,” California Trust and Estate Quarterly, Winter, 1998
  • “State Bar Committee Can’t Justify Repeal of No-Contest Clauses,” San Francisco Daily Journal, 2004
  • “Of Delegating and Double Dipping,” Trust & Estates Magazine, 2004
  • “The Trouble With Bennett,” Editor’s Column, California Trust and Estate Quarterly, 2008
  • “The New Alchemy: Hasso v. Hasso and Converting Principal to Income Under the Revised UPIA,” California Trust and Estate Quarterly, Spring, 2008
  • “From the Ashes: Can No Contest Clauses Be Resurrected By Conditional Gifts,” California Trust and Estate Quarterly, Fall, 2008
  • “A Square Peg in a Round Hole? Civil Law and Motion Pleadings in Probate Proceedings,” California Trust and Estate Quarterly, Spring, 2009
  • “Reports of Their Death Are Greatly Exaggerated: The Viability of No Contest Clauses Against Direct Contests Brought Without Probable Cause,” California Trust and Estate Quarterly, 2017
Educational Background:
  • B.A., Union College, cum laude, 1980
Bar/Professional Activity:
  • California, 1984
  • U.S. District Court Northern District of California, 1985
  • U.S. Court of Appeals, Ninth Circuit, 1984
  • California Lawyers Association (TEXCOM), Trusts and Estates Section, Executive Committee, Past Member
  • TEXCOM, Litigation Committee, Past Chair

Office location for Andrew Zabronsky

4 Orinda Way
Suite 200-D
Orinda, CA 94563

Phone: 925-230-4939


15 Years Super Lawyers
  • Super Lawyers: 2010 - 2024

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