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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Mahyar was a big part in helping start our company and setting up our corporation. She also went to battle with a Billion dollar Corporation to keep our doors open when they tried everything to shut us down.

Danny Lamping

Classic Refrigeration Company

In 2008 -2009, our company was involved in a lawsuit with over 1 million dollars claimed against us. Mahyar Ghassemian handled our case expertly and conscientiously. She explained on a regular basis the progress of our case and how each of the actions of our opponent would ultimately affect our case. At no time did we feel alone or compromised as Mahyar boldly stayed her course which eventually provided us with the satisfactory outcome we had hoped to achieve. She will be our first call should the need arise in the future.

Kelly Owen

Clarion Construction, Inc.

Many years ago an insurance carrier hired Mahyar Ghassemian to defend my construction firm in civil litigation. Not only was Ms. Ghassemian very knowledgeable and competent regarding the legal proceedings, but she was also personally vested in our well-being; she cared what happened. She counseled us regarding the various options, listened to our input and proceeded accordingly. In multiple cases with Ms. Ghassemian, we have never experienced a negative outcome. Today my first call when a potential legal issue is on the horizon is to Ms. Ghassemian. She is both extremely effective and cost conscious.

Russell Patterson

The Patterson Company

Small Firm Value – Large Firm Expertise