How Much Does a French Drain Cost in Fort Mill, SC?
Local price ranges, cost factors specific to Cecil clay soil, and what drives the final number for York County homeowners.
French Drain Cost by Type
Cost varies significantly by the type of French drain installed. An exterior curtain drain is the simplest and least expensive. An interior basement perimeter system is the most complex. Here is what local and national data shows for each type.
Sources: Lawn Love 2026, Carolina Drainage Solutions, LawnStarter 2026. Ranges represent national and Carolina-region data; local Fort Mill jobs may fall anywhere within these bands.
What Affects Cost in Fort Mill
York County's Cecil series subsoil is 35 to 70 percent clay in the Bt horizon. This is harder to excavate than sandy coastal soil, which adds labor time and equipment wear. Expect $2 to $8 per linear foot more than sandy soil areas for the same depth.
In Piedmont SC, drains need to reach below the clay Bt layer to be effective - typically 18 to 24 inches for yard/curtain drains, 4 to 6 feet for deep perimeter systems. Greater depth means more excavation cost.
This is the primary driver. A 50-foot curtain drain on a simple slope may cost $600 to $1,200. A full 200-foot perimeter system around a house runs $4,000 to $10,000 depending on depth and complexity.
Basement and crawlspace systems need a sump pump to discharge collected water. Pump installation adds $600 to $1,500. Higher-end pumps with battery backup run $1,000 to $2,000.
In established neighborhoods like Baxter Village and Waterside at the Catawba, sod restoration after trench excavation can add $500 to $2,000 depending on grass type and disturbed area. We include a restoration estimate in every quote.
Tight side yards, fences, or limited equipment access require hand-digging sections or smaller equipment, which increases labor cost. We assess site access during the free on-site evaluation.
Fort Mill Job Size Reference
- 30 to 50 ft drain repair
- Single catch basin installation
- Minor cleanout or regrading
- 50 to 150 ft new French drain
- Curtain drain on sloped lot
- Yard drainage with 2 to 3 catch basins
- Full perimeter + yard system
- Interior + exterior combination
- Large lot with multiple problem areas
Common Cost Questions
Can I get a rough estimate over the phone?
We can give you a rough range over the phone based on linear footage and drain type. But clay soil depth, site access, and lawn restoration are highly site-specific, so the only accurate quote comes from a free on-site visit. Call us or fill out the contact form and we'll schedule an evaluation.
Do you offer payment plans?
We currently price by project and collect payment on completion. For larger jobs we may require a deposit. If payment terms are a concern, mention it during the estimate and we can discuss options.
Why are French drain costs so different between quotes?
Quotes vary based on pipe diameter, gravel type, fabric quality, depth, and whether the contractor includes proper lawn restoration. Cheap quotes often use undersized pipe, no geotextile fabric, or pea gravel that compacts over time in clay soil. We specify 4-inch corrugated pipe, washed angular stone, and a non-woven geotextile fabric sock on every job.
How long until the investment pays off?
A French drain that stops water from reaching a foundation prevents far more expensive repair costs later. Foundation repair in York County runs $5,000 to $30,000+. Mold remediation from crawlspace moisture runs $2,000 to $10,000. A $2,500 French drain that prevents either of those problems pays for itself many times over.
Get an Accurate Quote for Your Property
On-site estimates are always free. We walk your yard, assess the specific issue, and give you a clear number - no guesswork.