The average price for retaining wall installation can vary depending on the height, length and material of the wall. Generally, a professionally installed concrete or masonry retaining wall will cost between $10 and $25 per square foot. If you are looking to install a retaining wall yourself, there are a few things to keep in mind. First, make sure that the soil is stable and well-draining; if it is not, you may need to install drainage pipes beneath the wall. Also, choose a robust material that can withstand the weight of soil and water; options include stone, concrete, brick or timber. Finally, always use a professional contractor to ensure that your retaining wall is correctly installed and safe.

It depends on the size and type of retaining wall, as well as the materials used. Generally speaking, a retaining wall can cost anywhere from a few hundred dollars to a few thousand dollars. Some factors that can affect the cost of a retaining wall include: -The height and length of the wall -The width and depth of the footing or base of the wall -The type of material used for the wall (stone, brick, etc.) -The type of soil being held back by the wall