Matthew Deenihan

Practice Areas

  • HOA
  • Insurance Defense
  • Litigation
  • Real Estate


  • California

Matthew J. Deenihan


Phone: 949.688.6749
Office: Orange County

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Matthew J. Deenihan is a partner with the Los Angeles office of Messner Reeves. He focuses his law practice on litigation, HOA disputes, real estate, and insurance defense.

With a background in working for private insurance, state government, and other law firms, he leverages this vast knowledge in strategizing all aspects of case and trial preparation for Messner Reeves clients. He has extensive litigation experience focused on defending complex civil cases involving motor vehicle accidents, director/officer claims, dangerous condition of property suits, and business/HOA commercial general liability.

Matthew earned his Bachelor’s degree in Political Science from the University of California Berkeley and his J.D. from the Georgetown University Law Center.

Matthew is a Los Angeles native passionate about supporting the LA Dodgers and California Golden Bears.

  • University of California, Berkeley (B.A. Political Science, 2003)
  • Georgetown University Law Center (J.D., 2006)
  • California State Bar
  • 8 jury trials; 7 to verdict
  • 3 bench trials; 2 to verdict
  • Multiple other arbitrations and small claim appeal trials
  • Founding member of HOA Team for Farmers Insurance, building a defense practice exclusively for HOA commercial liability and directors/officers cases from the ground up.
  • Eagle Scout
Professional Experience
  • Senior Trial Attorney for 11 years with Farmers Insurance, representing individuals, businesses, and HOAs in litigation issues such as personal injury and statutory compliance. 2011-2013, 2014-2023.
  • Founder member of the “HOA Team” for Southern California handling complex general liability and directors/officers claims for HOAs in all aspects of litigation through trial.
  • Associate, Adams Kessler PLC, serving as general counsel for HOAs in drafting governing documents, advising on statutory compliance, and prosecuting and defending litigation. 2013-2014.
  • Deputy Attorney, State of California Department of Transportation, Legal Division, handling personal injury defense and prosecution of eminent domain actions. 2009-2011.
  • Associate, Sheppard Mullin Richter & Hampton, handling finance and corporate transaction work involving lender and borrower side commercial loans, mergers, and acquisition transactions. 2006-2008.

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Messner Reeves LLP
1550 Wewatta St. Suite 710
Denver, CO 80202
Phone: (303) 623-1800.