The answer to the cost of retaining wall installation in your area depends on several factors, but you can generally expect a range of $30 to $60 per square foot for a basic retaining wall project. The total cost will depend on the size and height of the wall, the materials used (such as concrete, stone, or interlocking blocks), the complexity of the terrain, and any necessary site preparation or excavation work.
It's important to get quotes from multiple local landscaping companies, as prices can vary significantly based on your location and the specific needs of your project. Factors like the slope of your yard, the soil conditions, and accessibility to the work site can all impact the overall cost.