Who We Are


Experience matters. Having a law firm on your side that has previously been involved in very complex and challenging business and construction legal issues gives your company an edge. Mahyar has a Masters’ Degree in Physics from California State University, Long Beach and a technical background instructing engineering scientific classes in classroom and laboratory settings.

Construction cases are reliant upon expert testimony. Experts are either scientists or engineers. The ability to communicate with them as a fellow scientist, and to translate complex scientific and engineering concepts and terminology into easily understood language is valuable for our clients as well as the Court or jury.

Our business clients respect her background in the corporate world serving on the board of various corporations, as well as successfully running her own small businesses and advising business clients on all aspects from start up to expansion, from negotiations through litigation, and from planning to execution.

Mahyar Ghassemian obtained her Juris Doctor degree, graduating cum laude from Western State University College of Law in Fullerton, California.


Ghassemian Law Group is known for its client-centered service and cost-effective rates. Ghassemian Law Group has earned a perfect 10.0 rating and 5 stars on Avvo, one of the most respected attorney rating websites in the world. To customize a strategic plan and cost effective rate structure for your legal needs, call us at: (949) 436-2785.


We have represented some of the nation’s largest businesses, builders and contractors in litigation as well as transactional matters. We can help you with a litany of large and small legal issues. Ghassemian Law Group also serves as general counsel to several California small to medium sized companies including: Retaining Walls Company, The Patterson Company, and many more. We have represented the following national companies in litigation:

Mission | Vision | Values

Our mission is to enable business owners to have peace of mind. We are a boutique construction law firm with big firm experience.

Our Team

We empower business owners to succeed and resolve disputes effectively by offering the legal expertise of a large firm on a small firm scale. Read about our team of expert attorneys and support staff that comprise our boutique firm.

Honors & Awards

Mahyar Ghassemian has received a number of honors & awards including the title of State Board of Directors for Associated General Contractors of California.

Small Firm Advantadge

Ghassemian Law Group is a small firm with big-firm expertise. With over 20 years of experience, we’ve represented many businesses, builders, & contractors.
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Ghassemian Law provided thoroughly constructed and effective legal strategies for successful outcomes in the complex world of construction law for our small company. Core competence, due diligence, and a commitment to client needs are strengths that inspire confidence and keep producing results when it counts most.

Peter Greenberger

Pacwest Construction and Development Inc

Mahyar and her team possess a wealth of construction and business law expertise. Expertise to both guide a client away from litigation and, if not possible, to skillfully represent them in court.

Thierry Montoya

AlvaradoSmith APC

Mahyar Ghassemian and her firm are the best construction dispute litigators and negotiators in the industry. Mahyar is an expert in this area. Her firms knows the law and are very tenacious in obtaining the best results for their clients. I have been involved in very lengthy litigation as co-counsel in a very big case and jury trial. Mahyar is one of the hardest working and most effective advocates I have ever had the privilege of working with.

Paul Hoffman

Hoffman Legal Corporation

Small Firm Value – Large Firm Expertise