Mark A. Lester




771 E. Daily Dr. Suite 230, Camarillo, CA 93010

Member Details


Trusts & Estates Litigation

Law Firm

Lester & Hirschberg LLP

Area of Practice

Business Litigation, Corporate, Probate, Public Agency Law, Real Estate, Succession and Estate Planning, Trust Administration


California - 1981, U.S. District Courts for the Central, Northern, Southern, and Eastern Districts of California, U.S. Court of Appeals for the Ninth Circuit, U.S. Tax Court

Professional Affiliations

Los Angeles County Bar Association, Ventura County Bar Association, California Young Lawyers Association


Bachelor of Arts - Stanford University, 1977; Juris Doctor - Seattle University School of Law; LL.M Taxation - Boston University School of Law, 1981




Mark A. Lester is the founding partner of Lester & Hirschberg, LLP in Camarillo, California, where his practice focuses on trust, estate, and conservatorship litigation, trust and estate administration, and estate planning. He is recognized by the State Bar of California Bar of California Board of Legal Specialization as a certified specialist in estate planning, trust and probate law and, served one-year terms as the Chairman of both the Board of Legal Specialization and the Estate Planning Law Advisory Commission over the span of 11 years of service to those boards.

Mr. Lester has taught and lectured at numerous probate, trust and estate litigation, trust administration, estate planning, and professional fiduciary seminars. He was trial and appellate counsel in Breslin v. Breslin (2021) 62 Cal.App.5th 801 where he created what is now recognized as the “Breslin Notice” and the Court of Appeal affirmed the probate court’s authority to send parties to mediation under Probate Code §17206; Christie v. Kimball (2012) 202 Cal.App.4th 1407, where the Court of Appeal affirmed the probate court’s own authority to order an accounting from a trustee as part of its plenary powers of managing cases; and Estate of Odian (2006) 145 Cal.App.4th 152, where the Court of Appeal expanded the definition of “care custodian.” He was also the author of one of the Amicus Briefs relied upon and quoted by the California Supreme Court in reversing the Court of Appeal in Barefoot v. Jennings (2020) 8 Cal.5th 822.

In addition to being recognized in 2008 by Goldline Research as one of the 10 Most Dependable Lawyers (Trusts & Estates) in California, Mr. Lester has also received the Martindale-Hubbell “AV-Preeminent” Peer Review rating, which is the highest possible rating in both legal ability and ethical standards. For the past 10 years, Mr. Lester has been recognized as a Southern California Super Lawyer in both Estate Planning & Probate and in Estate & Trust Litigation areas of the law and in 2022 and 2023 as a Top 100 Southern California Super Lawyer in all categories. Mr. Lester is a member of the Los Angeles County (volunteer, Attorney-Client Dispute Resolution Services Panel; judge pro tempore, Los Angeles Superior Court; and Pro Bono Probate Settlement Program) and Ventura County (Probate and Estate Planning Executive Committee) Bar Associations and the State Bar of California (Trusts & Estates and Business Law Sections).

He received his B.A. degree from Stanford University, his J.D. degree from Seattle University School of Law, and his LL.M. degree in taxation from Boston University. Mark is an Eagle Scout, the father of 3 Eagle Scouts, and enjoys camping, RV-ing, golf and Dodgers baseball with his children, grandson and family.