RGA Office of Architectural Design


RGA brings more than 20 years of dedicated professional services to the architectural practice, throughout Southern California, as well as Central California and several western states.

RGA offers full architectural services, specializing in industrial and office facilities with our focus always on complete, accurate and coordinated documentation along with a constant commitment to our client’s rigorous schedules and budgets. 

At RGA, we view teamwork as the essential factor in every successful project. We have experience with a multitude of team structures including design/build, and we commonly engage the work of additional project consultants such as civil, structural, electrical and mechanical engineers under either our direction or the direction of the Owner or CM.  Whatever the final team structure, our mission remains constant: to facilitate the critical ingredients of communication, clarity of tasks, and a thorough understanding and development of the project through design and construction.

Over the past two decades, RGA has positioned themselves as a regional leader in the southern California industrial market, with a high level of principal involvement to provide clients with well designed projects, responsive delivery techniques, and comprehensive construction documentation.  These remain core values of our practice today.


RGA was founded by Dennis Roy and Mike Gill, both active Principals in the firm.  Prior to forming RGA, Dennis and Mike were managing directors at another California based architecture firm.  In 1992, Dennis and Mike left their positions to create RGA, Office of Architectural Design.  The firm opened their office in downtown Long Beach, CA, where they developed a small practice focused on office and industrial work, as well as port terminal projects at the nearby Port of Long Beach.  In 2001, the firm relocated to Irvine, CA to bring it closer to the offices of a growing number of their clients, as well as to the expanding industrial market in the Inland Empire.  In the ensuing 15 years, the staff grew as RGA’s reputation and client relationships continued to develop.  In 2015, Dennis and Mike brought on Chris Savage, a long time employee, as a Partner and Associate Principal.


RGA specializes in industrial work of all types, from light industrial business parks to million square foot plus distribution centers.  We have worked extensively on food processing facilities, cold storage buildings, manufacturing plants, and transfer hubs for global couriers such as UPS and FedEx.  As part of this work, RGA also frequently works on the interiors scope, completing design and construction documents for office improvements anywhere from 500 sf to 50,000 sf.  

RGA also has experience in commercial office projects, including core and shell office / MOB projects, as well as build-to-suit two and three story office projects. 

In total, RGA has delivered over 100 million square feet of vertical development in its 23 year history, and has planned tens of millions more.  Its clients range from small regional businesses and builders to global developers, institutional portfolio investors, and Fortune 100 companies.


  • Master Planning
  • Site Planning
  • Programming
  • Space Planning
  • Construction Documents
  •     Architectural
  •     Structural, Mechanical, Plumbing, Electrical, Landscape (consultant services)
  • LEED and Commissioning (consultant services)
  • City Processing
  • Construction Administration


RGA was an early adopter of the USGBC LEED® rating program.  Our first LEED project, the Contessa Foods project completed in 2006, was the first LEED Certified frozen food processing facility in the country and was awarded the Gold Certification level.  Since then RGA has designed and completed over 50 LEED Certified projects totaling over 20 million square feet, with another dozen LEED projects in the pipeline.  Our projects have achieved certification levels from basic Certified all the way to Platinum ratings, in both the New Construction and Core & Shell ratings programs.  RGA frequently engages sustainability consultants as part of our project team, or alternatively we can work with the Owner's consultant during the design process and construction process.  Regardless of the team structure, RGA understands the LEED process as well as the cost implications for certain credits, and can help lead the design team towards the Owner's sustainability goals.

Where we work

  • California
  • Nevada
  • Arizona
  • Utah
  • Texas