See how Quality Retaining Walls turn boulders into beautiful retaining walls. Whether you're trying to add curb appeal to your home or more outdoor space to your property, retaining walls is the way to go. With so many combinations of materials, shapes, and designs, the options are truly limitless. Quality Retaining Walls Located in Northern California, the east bay area specializes in commercial and residential retaining walls, with the highest customer satisfaction in the retaining wall industry. Check out this site for more information. We have a gallery where you can see what your home or business would look like with a professional retaining wall contractor.