About Us Boasting 40+ years of civil engineering and construction experience working with main roads, industrial facilities, waste water treatment plants, power stations and Sate & Local Government departments—our primary focus at Retaining Walls GC is to use our teams wealth of experience to establish strong working relationships with our clients. With our teams combined experience and our certified subcontractors, we are able to handle a wide range of tasks within each job, giving our team a great project management advantage. Our Services Retaining Walls Custom concrete panels or standard concrete sleepers provide cost effective, durable and maintenance free retaining wall systems. Commercial, Industrial and Agricultural Retaining/Bund Walls We have the ability to manufacture custom size concrete panels for specific projects or sites. Our panels can be manufactured off site or we are able to cast onsite.