44+ Building A Retaining Wall Cost Gif. Retaining walls often serve a very important role of preventing soil erosion and maintaining the grade of a landscape. Average costs and comments from costhelper's team of professional journalists and community of users.
Wood timbers start at $15 per square ft and block starts at $20. Learn to build one using shaped concrete blocks designed for this purpose. .cost to install a block retaining wall is about $16 per square foot or $1,600 for a local professional installation of a 20′ long x 5′ high wall (100 sf).
Many structures, including sheds, walkways.
A lot of things about. How much a retaining wall should cost. Retaining wall costs by materials. The cost of retaining wall materials ranges from $3 to $40 per square foot.