Quality is our cornerstone
Safety is our commitment

Providing the highest level of expertise, accuracy and integrity in special inspection, materials testing and geotechnical testing services throughout California.

More About ISI

At ISI, we believe in creating a safe environment, from the structures we inspect, to the materials we test. By embracing a culture of quality, we focus on perfecting our abilities, products and processes. Every ISI employee contributes toward this goal, creating a synergy that spurs innovation and provides our clients with exceptional value.


Our Services

Special Inspection

ISI provides a full range of Special Inspection Services — that is, monitoring of materials and workmanship critical to the integrity of the building structure — in order to ensure compliance with approved plans, specifications and relevant building codes and ordinances.
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Professional Services

ISI provides a range of additional services for the construction industry. ISI’s staff includes California Licensed Civil and Geotechnical Engineers; OSHPD, DSA and NICET certified technicians.
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Materials Testing

ISI operates two Materials Testing Laboratories, located in Berkeley and Torrance, California. Testing is overseen by a professional registered engineer and conducted by certified laboratory technicians (NICET, ACI, CALTRANS).
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Geotechnical Testing

ISI operates a full-service Geotechnical Laboratory in Berkeley. It’s equipped to perform all of the common and many of the advanced geotechnical tests required by our clients.
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Our Staff

ISI’s principals and management are accomplished professionals, Registered Professional Engineers and/or Certified Inspectors, with an average of over 25 years of experience. Earning and maintaining all accreditations and certifications required within the industry, ISI personnel are the backbone of our company and the cornerstone of our reputation.


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The ISI Technology Advantage

ISI’s cloud-based practice management platform, GreenBox, significantly enhances timely and targeted access to special inspection and testing reports for our clients. Using the Online Reporting option, clients, project managers, superintendents, and quality managers can gain quick access to all reports for their project over any Internet-accessible device.They can view reports and drill down by week, CTR, lab, technical review, inspector name and more. It’s easy to find the exact report they need fast. GreenBox also sends email alerts are available when new reports are available.

Northern California


Southern California


1798 University Avenue
Berkeley, CA 94703
F: 510.900.2101

1455 Crenshaw Blvd.
Torrance, CA 90501
F: 310.328.8193