Cowan & Thompson has been in business since 1987, and are headquartered in Martinez, California. We are well known as one of California’s leading retaining wall contractors. Cowan & Thompson is a General Engineering Contractor specializing in Retaining Wall Construction, Prep & Detail, and Landscaping for new home subdivisions. Cowan & Thompson has completed projects throughout the State of California, from the suburbs of Los Angeles to the Oregon border.
Cowan & Thompson is the one-stop shop for everything our customer’s need. We are a professional full-service retaining wall contractor, and we offer the complete turn key operation. Over the past two decades, Cowan & Thompson has developed excellent working relationships with Customers and Vendors. We are well respected in our industry because of our experience, knowledge and professionalism, and as a direct result, much of our business is repeat customer based.
Our knowledgeable and experienced estimating team can assist the homebuilder and project owner in determining the retaining wall system that fulfills their individual project needs. From Keystone system to the Concrete Masonry Units our customers can rest assured that Cowan & Thompson has the product knowledge to get your project off the ground. Our company requires continuing education of our already highly trained staff.