Charlie Kim
Charlie holds the degrees of M.S. in Civil Engineering from California State University, Long Beach and B.A. in Architectural Engineering from Han Yang University, Seoul, South Korea.  Charlie has worked as Estimator, Project Superintendent and Project Manager for numerous construction projects since 1985.  He joined GB Construction, Inc. in 1990 starting out as a partner and consistently worked his way up, eventually taking full ownership of the company in 2003.  Charlie concurrently holds the position of President, Secretary, and Treasurer.

KC Kim
Vice President / Project Manager

KC holds the degrees of M.A. in Liberal Arts from University of California, San Diego and B.S. in Physics from Chung Ang University, Seoul, South Korea.  KC has worked as Project Superintendent and Project Manager for numerous construction projects since 2003.  He joined GB Construction, Inc. in 2004 starting out as a superintendent and consistently worked his way up.  KC works closely with the owners and construction managers and led a number of projects to success with his relentlessness.

Ken O
In‐House Architect / Estimator

Mr. O holds the degree of B.S. in Architectural Engineering from Seoul City University, South Korea.  

Mr. O completed numerous projects in Korea and China in his early years as an architect and received a number of awards from Korean and Chinese governments for his magnificent achievements.  Mr. O moved to the US in 2001 and joined GB Construction, Inc. as estimator and architect overseeing numerous construction projects.  With his profound experience and knowledge, Mr. O works closely and proactively with the Owners and their architects to prevent additional works, and contributes significant savings to the projects.


Michael Roberts
Senior Superintendent

Michael is armored with more than 30 years of field supervisory skills.  His epic experience on the field boasts excellent time management, great communication skills with sub contractors, inspectors and the Owners / their representatives.  The projects that Michael has been working by far range from market rated residential to public schools (Elementary, Middle, High and College), Fire Stations and affordable housings.  Michael joined GB Construction, Inc. in 2014, and he has anchored himself at a pivotal position in the company ever since.

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