Average Hourly Cost: The average hourly cost for drainage system installation by a rock landscaping contractor is around $100 per hour in 2023.

Cost Breakdown: The cost of drainage system installation includes the cost of labor, materials, and equipment. Labor costs typically consist of the contractor's hourly rate, the cost of any subcontractors, and the cost of any permits or inspections. Materials costs typically include the cost of the drainage system itself, as well as any other necessary materials, such as gravel, soil, and piping. Equipment costs typically include the cost of renting or purchasing any necessary tools or machinery.

Factors Affecting Cost: The cost of drainage system installation may vary depending on the type and quality of the accessories used, the complexity of the job, and the location and service provider. Additionally, the cost may be affected by the size of the area to be covered, the amount of labor required, and the difficulty of the terrain and soil.