How much does a French drain cost?
French drain installation runs $1,200 for a short surface-level run, $3,500 for a typical 50-ft perimeter drain, and $8,500+ for interior basement systems with sump-pump tie-in.
Quick price points (2026)
| Tier | Cost | Unit |
|---|---|---|
| Low | $1,200 | per job |
| Typical | $3,500 | per job |
| High | $8,500 | per job |