Brea California downtown aerial view

Brea Construction
& Business Litigation Firm

If you’re looking for a boutique law firm with an incredible case history in construction and business litigation, look no further than Ghassemian Law Group! Our ability to strategize and defend our clients’ interests pairs with our small-firm expertise and big-firm experience, creating a proven track record of solutions to even the most complex litigations.


Brea in Southern California is home to around 49,737 people as of 2023 and is located south-east of Los Angeles. Founded as crude oil production grew, and then further expanded via citrus production, the area is known for the Brea Mall and the downtown Brea area. Brea is an energetic city, with diverse options for shopping, working, eating, and entertaining. This city boasts luxury homes in gorgeous neighborhoods like Olinda Ranch, Glenbrook, and Village at Brea Summit. Brea is an excellent location for anyone who desires proximity to the big LA city but also wants a dynamic and unique community.


At Ghassemian Law Group, we are experts at handling cases for designers, engineers, construction businesses, CEOs, architects, residential project developers, or owners of custom-built residences. Pursuing your rights through our knowledge and experience, we can tackle even complex construction cases, translating technical terms into language that judges and juries can understand. Every client working with Ghassemian Law Group has access to a team with an intimate understanding of:

Whether you’re an employee fighting for fair pay or a company frustrated with constant legal struggles, Ghassemian Law Group can help. Going the extra mile, past fighting your legal battles in court, we also help you grow your company by sharing knowledge that will help you prevent future legal problems and successfully structure your business contracts. If you work with us, we will free you up to focus on your business instead of becoming mired in legal problems.

Ghassemian Law Group would love to help your business or construction company located in Brea. We strive to offer the best attention to detail, coupled with our big-firm experience, to pursue the outcome you deserve. To begin tackling your legal barriers, contact us today!


I can’t say enough positive things about the incredible team at this attorney’s office. From the moment I spoke with them on the phone, I knew I was in capable hands. Even though I am a North Carolina business I had a very complex case in California. The law firm and attorneys were the best of the many, many law firms I interviewed. I can not say enough how easy they are to work with from start to finish.
Their expertise is unmatched. They navigated the complexities of my case with professionalism and confidence, leaving no stone unturned. Their depth of knowledge and strategic thinking were evident every step of the way.
What truly sets them apart is their genuine care for their clients. They listened to my concerns, answered my questions promptly, and ensured I felt supported throughout the entire process. It’s clear they care about their clients and they’re in it to make a real difference in people’s lives.
The professionalism and attention to detail displayed by this office are outstanding. They kept me informed, were always on time, and made sure I understood every aspect of my case. They turned a potentially stressful situation into a manageable one.
I’m incredibly grateful for the exceptional service and favorable outcome they delivered. If you’re seeking legal representation that combines expertise, compassion, and dedication, look no further. This attorney’s office is a true gem and worthy of every one of these five stars!

Christopher Grouse

Grouse Industries, 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