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If you are looking for a dynamic consulting firm committed to client service, innovation, and success, whether for your next project or your next career move, you have found the right company in RMA Group. We were originally founded in 1962 as Richard Mills & Associates by Richard Mills, CEG and E. Duane Lyon, GE. These men worked in the growing Ontario and  Pomona Valley helping to design and construct much of the infrastructure that supports what is known today as the Inland Empire. They earned a reputation for quality professional service based on their commitment to integrity, honesty and fairness, loyalty, and hard work. The work of these men, and the values they stood for, have formed a foundation that has led the clients and agencies with which we interact to trust and rely on us for over 50 years.

Today, RMA Group has successfully expanded on the early work of our founders both geographically with offices located in key regions throughout California and professionally by offering a diverse set of services to our clients. We have grown to employ over 300 of the industry’s brightest engineers, geologists, inspectors, technicians and administrative professionals. Much of this growth occurred during the most severe economic downturn of my professional career. We regard the growth of our firm during those difficult times as a testament to the real value we bring our clients in every project that we undertake.

Today the employee owners, and next generation of management at RMA Group are committed to providing quality professional consulting services to our clients and to diligently uphold the reputation that our founders have earned. We recognize that while we are first and foremost professionals, our business is built on providing a service to our clients, developing long-term relationships, and assisting our clients in whatever fashion of which we are capable.

We are glad that you have found our website. If you are looking for a partner to help you successfully deliver your next project please feel free to contact any of our leaders and they will be glad to assist you. If you are looking into joining RMA Group and taking advantage of the growth opportunities offered by our company, please explore our career opportunities here. In either case, we look forward to working with you as we continue to invest in the growth and development of the built environment of the future.


ED Lyon, CEO