What french drain means
A French drain is a trench filled with gravel around a perforated pipe that collects groundwater or surface water and carries it away.
Where it matters on a waterproofing job
Outdoor French drains fix soggy yards and water heading toward the house. The outlet matters: the pipe needs somewhere lower to drain. Plan the outlet before you quote the trench.
What it costs
Jobs that involve french drain are priced in the french drain installation cost guide: about $5,000 typical, usually $1,650 to $12,500. The guide shows its sources and what moves the price. The french drain cost calculator prices a job line by line.
Work it out
- Free calculator: French drain cost calculator
- Cost guide: French drain installation cost
- Tools, templates and guides: Free waterproofing resources