Cowan & Thompson is one of California’s leading retaining wall contractors.

Our company has been leading the standard for excellence since 1987.  We are a professional full-service retaining wall contractor. For almost two decades, Cowan & Thompson has maintained its commitment to quality, integrity and service. We pride ourselves on being a reputable, honest, reliable and friendly company with a level of professionalism matched by our competitive pricing. These principles remain an important part of what we do each day - on every project.