Estate Planning, Trusts
And Probate

Real Estate Transactions


Philip R. Diamond






Philip R. Diamond is a highly experienced attorney who has joined CunninghamLegal Of Counsel, in tandem with Lerman Law Partners LLP.

With over four decades of legal practice under his belt, Philip is experienced in many areas of law, including Real Estate and Construction, Toxic Tort, Employment, Structural & Agricultural Pest Control, Insurance Coverage and Bad Faith, Product Liability, Aviation, Commercial and Business Litigation, and General Tort Litigation. He is a member of the American Bar Association, the California State Bar Association, and the Marin County Bar Association; and was a founding and name partner in two San Francisco Financial District law firms.

Phil received his J.D. from the University of California at Berkeley, Boalt Hall School of Law, where he received the American Jurisprudence Award and was an editor of the California Law Review. He also earned his A.B. from U.C. Berkeley, where he graduated with Great Distinction and was a member of the prestigious Phi Beta Kappa fraternity.

Throughout his career, Phil has held numerous positions of leadership within the legal community. He served as Director for the Marin County Bar Association from 2005 to 2008 and from 2009 to 2012, as well as Chair of the Alternative Dispute Resolution Section from 2011 to 2012. He joined Lerman Law Partners, LLP in 2004 (as Of Counsel).

Importantly, Phil is known as a skilled and highly respected mediator and arbitrator, and operates his own practice known as Diamond Dispute Resolution. In addition, he is a licensed California Real Estate Broker (BRE Broker License No. 01968370).

This seasoned attorney's passion for the law and helping people is clear: "I am honored to have spent over 40 years working with clients to help them resolve their legal disputes," says Phil. "My goal is to provide every client with the highest level of personalized attention and to help them achieve the best possible outcome."

Contact Us Today
Philip R. Diamond and our full team of attorneys can help you with advanced Estate, Trust, and Tax Planning from any of our offices throughout Northern and Southern California. We offer in-person, phone, and Zoom appointments. We invite you to reach out with any questions or needs at 415-448-7778 or 866-671-5902 or request a call by using the form on this page.

At CunninghamLegal, we guide savvy, caring families in the protection and transfer of multi-generational wealth.

Areas Of Practice

  • Real Estate and Construction
  • Toxic Tort
  • Employment
  • Structural & Agricultural Pest Control
  • Insurance Coverage and Bad Faith
  • Product Liability
  • Commercial and Business Litigation
  • General Tort Litigation

Bar Admissions

  • California, 1974
  • U.S. District Court Northern District of California, 1974


  • University of California, Berkeley, School of Law, Berkeley, California
    • J.D.
    • Honors: American Jurisprudence Award Winner
  • University of California, Berkeley, Berkeley, California
    • A.B.
    • Honors: With Great Distinction
    • Honors: Phi Beta Kappa

Professional Associations And Memberships

  • American Bar Association
  • California State Bar Association, Member, 1974
  • Marin County Bar Association, Director, 2005 – 2008, 2009 – 2012; Chair, ADR Section, 2011 – 2012
  • San Francisco County Bar Association, Member

Past Employment Positions

  • Bronson, Bronson & McKinnon, 1974 to 1982
  • Bickel & Diamond, Founding and Name Partner, 1982 to 1989
  • Wright, Robinson, Osthimer & Tatum, Shareholder, 1989 to 1997
  • Niesar & Diamond LLP, Founding and Name Partner, 1997 to 2003
  • Diamond Dispute Resolution, 2003
  • Lerman Law Partners, LLP, Of Counsel, 2004

Ancillary Businesses

  • Mediator/Arbitrator/Special Master: Diamond Dispute Resolution
  • CA Real Estate Broker (BRE Broker License No. 01968370)


  • Phi Beta Kappa
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