HGA Architects and Engineers


Kelly Cardella, Associate Vice President, Northern California
170 Maiden Lane, 5th Floor
San Francisco, CA 94108

(415) 814-6910 office
(415) 962-2598 fax

Jessie Robertson, Associate Vice President, Southern California
1918 Main Street, 3rd Floor
Santa Monica, CA 90405

(310) 557-7600 office
(310) 553-1668 fax


HGA is an integrated architecture, engineering and planning firm that helps prepare its clients for the future. In 1953, our founders established HGA’s principles of innovation, collaboration, design excellence and responsiveness to clients which continue to inspire us today.

HGA has completed more than 80 Design-Build projects nationwide, serving a variety of markets, such as: Healthcare, Higher Education, Corporate, and Cultural. With offices in San Francisco, Los Angeles, San Jose and Sacramento, California; Minneapolis and Rochester, Minnesota; Milwaukee, Wisconsin; and Washington, DC., HGA has expertise in the healthcare, public/corporate, arts, community and education industries.

Our interdisciplinary collaboration and design investigation provides our clients with world-class, forward-thinking and sustainable workspaces. 


  • Federal Agency Office – Regional Headquarters
  • Adventist Health, Hanford Community Medical Center
  • City of Hope -- Antelope Valley Cancer Center
  • ELAC Student Success Center
  • University of California, Davis – Health Sciences Education Building
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