Joseph A. Lumsdaine

Joseph A. Lumsdaine

(562) 923-0971

phone number



Joseph A. Lumsdaine is currently of counsel to Tredway Lumsdaine & Doyle LLP (TLD) and prior partner (1981-2014). He serves a wide range of clients in all matters related to probate, trusts, business and estate planning, elder law and related litigation.

Mr. Lumsdaine joined TLD in 1979 after working as a trial attorney for the federal government and for a labor law firm in Los Angeles. He was named partner at TLD in 1981 and senior partner in 2011. In his more than 35 years of legal practice, Mr. Lumsdaine has concluded more than fifty state and federal jury and court trials to verdict, involving business disputes, personal injury, real estate and probate and trust litigation.

He has been appointed numerous times by the Los Angeles County Superior Courts to serve as a Probate Volunteer Panel attorney, as Judge Pro Tem and as Mediator. He has been certified by the Pepperdine University School of Law for the completion of their mediation training program. Mr. Lumsdaine regularly attends either the USC or the UCLA Probate Update Conferences.


  • Martindale-Hubbell AV Rating
  • Southern California SuperLawyers
  • LA Magazine Top Lawyers in Southern California
  • Southeast District Bar Association Attorney of the Year
  • ARC Community Service Award
  • YMCA Distinguished Service Award


  • Member, Orange County Bar Association
  • Member, Los Angeles County Bar Association
  • YMCA Board Member and former Chairman
  • Downey Chapter Habitat for Humanity Past President
  • Southeast District, Bar Association Past President and Board Member
  • ARC Southeast Los Angeles County/Former President and Board Member
  • Deacon, Archdiocese of Los Angeles
  • East Long Beach Pony Baseball League teams/Past Coach and Manager


  • University of California at Berkeley (B.A., 1973)
  • University of California at Berkeley (J.D., 1976)
  • Saint Mary’s University of Minnesota (M.A. 2006)


  • California, 1976
  • U.S. District Courts, 1976
  • U.S. Appellate Courts, 1979
  • U.S. Supreme Court, 2004

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