Protect your property from water damage with proper drainage solutions. Learn about French drains, when you need them, and installation considerations.
$1,500-5,000
2-5 days
Professional recommended
A French drain is a trench filled with gravel and a perforated pipe that redirects surface water and groundwater away from an area. Despite the name, it was invented by American farmer Henry French in 1859.
Purpose: Handles surface water runoff
Best for: Yard drainage, around patios, driveways
Depth: 18-24 inches | Cost: $15-25 per linear foot
Purpose: Intercepts groundwater
Best for: Basement waterproofing, foundation protection
Depth: 3-6 feet | Cost: $25-50 per linear foot
Purpose: Intercepts water flowing down slopes
Best for: Hillside properties, preventing water from reaching structures
Depth: 2-4 feet | Cost: $20-35 per linear foot
French drain installation requires proper planning, grading, and often permits. Improper installation can worsen drainage problems or damage neighboring properties.
| Factor | Impact on Cost | Typical Range |
|---|---|---|
| Length of drain | Linear foot pricing | $15-50/ft |
| Depth required | More excavation = higher cost | +$5-15/ft for deep |
| Soil conditions | Rocky/clay soil increases labor | +20-50% |
| Access difficulty | Hand digging vs machine | +30-100% |
| Permits required | Additional fees and time | $100-500 |
Don't want to tackle this project yourself? Our experienced team can handle your french drains project with professional results and guaranteed satisfaction.