The answer to 'when to drainage system' is that a proper drainage system should be installed during the initial landscaping or home construction process. Proper drainage is crucial to prevent water damage, flooding, and other issues that can arise from poor water management around your property.
Installing a drainage system involves strategically placing pipes, drains, and other components to collect and divert excess water away from your home's foundation, landscaping, and other critical areas. This helps protect your investment and ensures the long-term health and functionality of your outdoor spaces.