The answer to the cost of retaining wall installation is that it can vary significantly depending on several factors. Typically, the cost of a retaining wall installation can range from $25 to $50 per square foot, but this is just a general guideline. The actual cost will depend on the size and complexity of the project, the materials used, the site conditions, and the labor costs in your local area.
Some key factors that influence the cost of a retaining wall installation include the height and length of the wall, the type of materials used (such as concrete, stone, or wood), the need for excavation or site preparation, and any additional features like drainage or landscaping. It's essential to get local quotes from reputable landscaping contractors to get an accurate estimate for your specific project.