Most residential French drains in Round Rock run $1,500–$3,500, with larger or more complex projects costing more. Here's what drives the price and how to get an accurate quote.
| Project type | Typical cost |
|---|---|
| Basic French drain (short run, easy access) | $1,500 – $2,500 |
| Standard residential French drain | $2,500 – $3,500 |
| Long run or deep drain | $3,500 – $6,000 |
| Complex job (multiple drains, regrading, hardscape) | $6,000+ |
Pricing is commonly figured per linear foot — roughly $25–$60 per foot installed in this area — so the total mostly comes down to how long the drain needs to be and how hard it is to dig.
The biggest factor. A 30-foot drain costs far less than a 100-foot system, and deeper drains mean more digging.
Round Rock's Blackland clay and shallow limestone make trenching slow. Rock and tree roots add cost.
Open backyards are cheap to work in. Tight side yards, fences, and slopes push labor up.
A simple daylight outlet is inexpensive; a dry well or long tie-in to the street costs more.
Replacing sod, mulch, or pavers over the trench adds to the total.
Pairing with regrading, catch basins, or downspout tie-ins for a complete fix affects price.
If standing water is damaging your landscaping or pooling near your foundation, yes. Standing water against your slab is a leading cause of foundation movement in Central Texas — and foundation repair routinely runs $5,000–$18,000+. A French drain is a fraction of that.
The cheapest option is rarely the best: an undersized drain that fails in the first big storm means paying twice.