We specialize in providing property damage assessment services
for attorneys and insurance professionals.


Catastrophic events often create devastating damages in an instant. That's why you can always count on us to be prepared to respond promptly and effectively. Whether it be an earthquake, landslide, El Niño winter, fire, or other disaster, we have decades of experience in evaluating catastrophe related damages on properties and structures.

Our experts have been trusted to provide forensic engineering services to assess property damages that arise in events such as the 1994 Northridge and 2014 Napa Earthquakes, the 2004 to 2006 intense rainfall events, and the 1997 to 1998 El Niño winter in California.  



Group Delta offers a broad range of services to meet the needs of our clients.

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Our team consists of highly trained professionals and are ready to respond to our clients requests.

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Our six offices are located throughout California in the counties of Los Angeles, Orange, San Bernardino, San Diego, and Alameda.

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Soil Mechanics arrived at the borderline between science and art. I use the term “art” to indicate mental processes leading to satisfactory results without the assistance of step-for-step logical reasoning…To acquire competence in the field of earthwork engineering one must live with the soil.
— Karl Terzaghi, Father of Soil Mechanics, at the 4th International Congress on Soil Mechanics, England, 1957