Drainage: The Hidden Cost That Saves Money
Every hardscape project changes where water goes. Ignore drainage and you'll pay far more later. Here's what proper drainage costs and why it matters.
Common Drainage Solutions
- Surface grading: Often included in project cost
- French drains: $30-60 per linear foot
- Channel drains: $50-100 per linear foot installed
- Catch basins: $300-600 each
- Dry wells: $1,500-3,000 each
- Sump pump systems: $3,000-6,000
When Drainage is Critical
- Adding hardscape that directs water toward foundation
- Pool decks and patios without natural grade away from home
- Retaining walls holding back soil
- Properties below street grade
- Areas with clay soil that doesn't absorb water
💡 Pro Tip
Budget 10-15% of hardscape projects for drainage. It's far cheaper than foundation repairs or flooded patios.
Frequently Asked Questions
Does my hardscape project need drainage?
Almost certainly yes. Any project that changes grade or adds impervious surface affects water flow.
How much does drainage add to project cost?
Typically $2,000-15,000 depending on site conditions and solution required.
What happens if I skip drainage?
Water pools on surfaces, erodes landscaping, damages foundations, and creates mosquito habitat. Never skip it.





