Jillisa L. O'Brien
  Partner

Jillisa concentrates her practice in the areas of construction, insurance defense and professional liability litigation. She has significant experience in representation of general contractors, subcontractors, design professionals and directors in claims concerning construction defect, cost overruns and delays, construction accidents, and directors and officers liability. Additionally, Jillisa represents Common Interest Developments in transactional matters and serves as General Counsel to Home Owner Associations while continuing to assist individual members of HOAs resolve disputes with their associations.

Jillisa also handles all aspects of insurance claims and litigation that impact construction matters. She has represented professionals, including architects and engineers in a variety of malpractice claims.

Jillisa graduated with a Bachelor of Arts degree in Speech Communication from California State University at Fullerton in 1993. She graduated from Southwestern University School of Law in 1997.

Jillisa is an active member in the Orange County Bar Association, Community Associations Institute, and Association of Southern California Defense Counsel.


jobrien@mmnt.com