About Robert Stewart Architects

Robert Stewart Architects began building our clients' dreams more than 39 years ago in Long Beach, California.  We are now located in Old Town Tustin, strategically located in the heart of Southern California.  We provide comprehensive architectural services to a wide variety of ports and maritime, supply chain logistics, commercial, industrial, and residential clients.  Identifying needs and solutions and practicing strong client advocacy allows us to collaborate effectively with you and your contractor resulting in the type of award-winning projects for which Robert Stewart Architects is known.


We seek opportunities to incorporate sustainable strategies in every project we design.  We believe sustainable buildings maximize opportunities and can improve return on your investment, reduce operating expenses, and create an environment for happier, more productive occupants.

Principal Involvement
Robert Stewart, the principal of our firm, has made a conscious decision to maintain a firm of moderate size in order to provide direct personal involvement in each project undertaken by RSA, ensuring one-on-one client relationships that are critical to successful projects.

Robert is a licensed architect in California and is also a LEED AP.  Bob has practiced architecture for over forty-nine years following graduation from USC with a Bachelor of Architecture in 1971.    More

What We Do

End to End Solutions

Robert Stewart Architects provides the one stop that provides you with the architecture and engineering solutions along with the end-to-end management to make your project successful:

  • Anayizing your proposed site or building purchase
  • Helping you determine your needs and requirements
  • Schematic space planning and organization
  • Award-winning design
  • Develop realistic project budgets
  • Assemble the right team of consultants and specialists needed for your project
  • Technical Construction Drawings and Specifications
  • Acquiring planning and building construction permits
  • Bidding and construction management
  • Sustainable strategies
  • LEED® Certification
  • Commissioning and post-construction O&M operational manuals
  • And we manage the whole process!

More about Services we offer


238 W Main Street,

Suite 202
Tustin, California 92780


562.595.0078 / 657.247.4881



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