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Warren A. Sinsheimer


Warren A. Sinsheimer

Warren Sinsheimer established the firm in August 1978. His personal practice focuses on trust and estate planning, and administration, taxation, fiduciary litigation, and charitable giving.


Warren received his B.A. degree in History from the University of California at Davis in 1968, and his law degree from Boalt Hall School of Law, University of California at Berkeley, in 1971. Following graduation from law school, he served two years as a law clerk for the Honorable Richard H. Chambers, Chief Judge for the United States Court of Appeals for the Ninth Circuit.

Warren has been a speaker for California Continuing Education of the Bar, the State Bar of California, Practicing Law Institute, the UCLA Estate Planning Institute, and the USC Probate and Trust Conference among others. He has published throughout the trusts and estates field in various professional journals.

Warren has qualified and testified as an expert witness in San Luis Obispo County Superior Court on trusts and estates matters. He has also been a consulting expert in trusts and estates litigation in other counties.

Warren lives in San Luis Obispo with his wife, Carol. They have two adult children, Amy and Gus.

Professional Affiliations:

* American College of Trust and Estate Counsel (Fellow)
* Executive Committee, State Bar of California, Section of Trusts and Estates 1993-2005 (Section Chair, 2001 to 2002)
* San Luis Obispo County Bar Association (Member/Past President)
* San Luis Obispo County Bar Association, Section of Estates and Trusts (Founder/Past Chair)
* American Bar Association and State Bar of California (Member)
* American Bar Foundation (Life Fellow)
* Estate Planning Council of San Luis Obispo County (Founder /Past President)
* Central Coast Planned Giving Council (Member)
* Advisory Committee, UCLA Estate Planning Institute (Former Co-chair)

Community Contributions:

* San Luis Obispo County Community Foundation (Founding Director, 1998-2007)
* Foundation for the Performing Arts Center (President, 1986-1996)
* Cal Poly Foundation (Director, 2006-2014)
* San Luis Obispo Mozart Festival (Past President)
* Santa Lucia Area Council Boy Scouts of America (Past President)
* San Luis Obispo Chamber of Commerce (Former Director)
* Library Leadership Council at Cal Poly San Luis Obispo (Former Chair, 2009-2014)

Special Recognitions:

*Seitz Award for Community Service, San Luis Obispo County Bar Association
*1994 Citizen of the Year, San Luis Obispo Chamber of Commerce
*"Best Lawyers in America" Referral Guide
2006-2015 Southern California Super Lawyers

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