About GSI

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GEOTECHNICAL STABILIZATION, INC. (GSI) offers a full range of geotechnical grouting techniques for site improvement and foundation repair. We have over 40 years of experience in the stabilization of both existing buildings and construction sites. We are a licensed specialty contractor, holding California, Arizona and Nevada state licenses.

We have a staff of trained engineers with extensive knowledge of and experience in soils engineering. Our work includes projects of all scales, ranging from individual single-story homes to multi-story buildings and structures such as bridges, culverts, highways, and sewage plants.

Over the years, we have worked with homeowners, engineers, contractors, developers, insurance companies and public agencies. We work very closely with our clients to provide effective solutions to their soil and foundation problems.

Clients and Projects

GSI works with contractors, developers, insurance companies and government agencies. GSI is a highly regarded geotechnical firm with a reputation for quality and efficiency on projects.

A partial list of our clients:

All State Insurance Company

Archer Western Contractors

Arizona Department of Transportation

Best Buy Company Inc.


Centex Homes

Chula Vista Elementary School District

City of Long Beach

City of San Diego

Donavan Construction Company

El Centro Regional Medical Centre

Fox Studios

Hermosa Homes


Irvine Ranch Water District

John Wayne Contractors

Mount La Jolla Home Owners Association

Paradise Valley Hospital

Penderosa Homes

Port of San Diego

Quail Creek Home Owners Association

San Diego State University

State Farm Insurance Company

Toll Brothers Inc.

University of California San Diego

U.S. Army

U.S. Navy


Please Contact Us With Questions Regarding Geotechnical and Foundation Repair Services