ARB, Inc. is the legacy entity among a group of companies that now make up the publicly traded company known as Primoris Services Corporation (PSC). We trade on NASDAQ under the symbol PRIM.   

We have grown through internal expansions and acquisitions to become one of the largest specialty contractors in the United States. We have diversified our operations by expanding our competency into engineering, industrial, underground, structural, and power generation activities.

Headquartered in Lake Forest, California, ARB has several offices throughout California which include; Bakersfield, Pittsburg, Carson, San Diego, and Fairfield. We also have offices located in Texas. ARB owns a vast array of equipment, allowing us to quickly mobilize and staff projects anywhere including remote locations.

We have built long-term relationships and repeat business from many companies including; Sempra, PG&E, BP, Edison, Conoco Phillips, Shell, Chevron, Valero, Venoco, Kinder Morgan Energy Partners, Tesoro, Exxon Mobil, NRG, and Calpine  to name a few.

Overview of ARB

After nearly five and a half decades, and with experience going back almost 15 years further, ARB has built a reputation for taking on challenges that others will not – setting the bar ever higher for ourselves and our industry with each project. Now, as we build a sustainable infrastructure that supports the growing needs of the nation, we reaffirm innovation, quality, service, and safety as our core values. And we remind ourselves that the pioneering spirit of yesteryear fuels the imagination of today.

ARB is comprised of two operating groups, Underground and Industrial. While the groups operate independently, they draw upon each other's resources to self-perform projects as needed, providing optimum project and quality control.
We build great projects because we have built a great company – and insist on great performance. And that’s a product of our people, passion, and partners.

With experience dating back to 1946, ARB, Inc. was founded in Bakersfield, California. The pipeline construction company met the growing demand for energy infrastructure that accompanied the mid-century oil boom in the west and quickly established a reputation for great quality and reliability. ARB’s work and reputation fueled significant growth, and laid the foundation for ARB which is today one of the largest specialty contractors in the west.