Peterson Geotechnical Group

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Peterson Geotechnical Group Peterson Geotechnical Group Peterson Geotechnical Group is an engineering firm located in Chandler, Arizona.

We work on civil and geotechnical engineering projects for a variety of new and existing construction projects throughout Arizona, Colorado, Utah, New Mexico and Texas. We specialize in forensic geotechnical and civil engineering on roadways, residential homes, commercial and retail structures, municipal buildings, etc. Our staff includes a mixture of geotechnical engineers, geologists, and construction personnel. We have extensive experience designing and overseeing repairs on problems involving moisture intrusion, erosion, settlement, collapsible soils, expansive soils, asphalt deterioration, concrete cracking and deterioration, groundwater issues, etc

We frequently get asked the question: "What is forensic geotechnical engineering?"

Forensic geotechnical engineering is an analysis of a structure in order to understand the cause of problems and/or failure. For example, we frequently get calls from homeowners that are having reoccuring drywall cracks, tile cracks, and/or stucco cracks. These reoccurring problems can be related to several factors, but our job is to determine the exact cause, design a repair, and then oversee that repair.

11/19/2025

PGG was recently hired by a homeowner who was trying to sell her home. Prior to listing the home, they replaced the carpet in the master bedroom and found a crack in the floor slab. The realtor recommended that this homeowner consult with a "foundation specialist" and see if repairs were needed. A sales company that does foundation repairs visited the home and recommended a $30,000 repair. The homeowner was floored and very concerned because they felt they needed to disclose this report to potential buyers. My office visited the home and noted that it was a 30 year old home, there were zero drywall cracks, the levelness of the floor was within tolerances for new homes (around 0.6 inches), and the crack in the concrete floor slab was a normal shrinkage crack (around 1/8 inch wide). The home did not need any repair. We looked into this "foundation specialist" and found that they are nothing more than a sales company. They have zero engineers in their Arizona office and unfortunately, they push for these repairs all the time. If you believe you have issues, contact an engineering firm. Do not agree to foundation repairs from a foundation repair contractor without consulting an engineer.

Address

4100 S Lindsay Road, Ste 122
Gilbert, AZ
85297

Opening Hours

Monday 8am - 5pm
Tuesday 8am - 5pm
Wednesday 8am - 5pm
Thursday 8am - 5pm
Friday 8am - 5pm

Telephone

(480) 219-0014

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