Garrett Thiessen Construction, Inc. is a leading concrete contractor serving the central coast of California in San Luis Obispo and Santa Barbara Counties. GTC incorporated has the technical ability and experience for the most challenging construction projects. Our commitment to high quality, safety and unparalleled service is reflected throughout our concrete construction projects.

Project Types

We have extensive experience in performing all types of new building and retrofit structural concrete work including cast in place and tilt-up structures.  We perform grading and site preparation as well. Our experienced field management will complete the most aggressive project schedules while still maintaining the highest level of quality.


We provide our clients with accurate budgeting and estimating services throughout the

pre-construction, budgeting, and competitive bidding process.  Our management team is involved with each project on a daily basis to execute a successful outcome.

• Schools   • Industrial   • Commercial   • Residential   • Wineries   • Office Buildings


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structural concrete projects

Professional • Safety • Excellence