How Much Does a French Drain Cost in Austin? (2026 Guide)
National 2026 cost guides put professionally installed French drains at roughly $10 to $100 per linear foot, with typical exterior yard systems landing between $1,500 and $6,500 and the national average project around $5,000. Deeper foundation-perimeter systems and projects that add sump pumps run higher. Those are published market figures, not a quote — every property drains differently, which is why Scott Lockhart Drainage Contractor prices every French drain after a free on-site walk-through, not over the phone. Since 1984, more than 10,000 Central Texas projects have started exactly that way.
Here's what actually moves the number — so you can read any bid intelligently.
What Drives French Drain Cost
Length. Drains are priced largely by the linear foot. A short run intercepting one wet corner costs a fraction of a full-property system.
Depth and type. A shallow yard drain solving surface pooling sits at the low end. Deeper drains protecting a foundation require more excavation — and more of the gravel and pipe that make the system work.
The discharge path. Water has to exit somewhere legal and downhill. An easy gravity exit keeps costs down; tight lots that need a sump pump to lift water out add to the project — national guides put sump pump additions in the $600 to $2,500 range.
What's in the way. Tree roots, rock (plenty of that in the Hill Country), irrigation lines, hardscape, and tight access all add excavation time.
Central Texas clay. Our soil is heavy digging, and it punishes shortcuts — undersized gravel beds and flat pipe runs fail here faster than almost anywhere.
Restoration. Sod, beds, and hardscape put back properly after trenching is part of a professional job, not an extra surprise.
Why Bids for the "Same" Drain Vary So Much
Two bids hundreds or thousands of dollars apart usually aren't pricing the same system. The differences hide underground: trench depth, gravel quantity, fabric quality, pipe type, whether the drain is actually sloped to move water, and where the water ends up. The questions that expose the difference are the same three questions we recommend for every drainage bid: Where does the water go? What's the slope plan? What happens in the next big storm?
The Expensive Version of Cheap
A French drain built wrong — flat pipe, thin gravel, no real exit — doesn't just fail. It can concentrate water and deliver it somewhere worse than where it started. Paying twice (once for the wrong drain, once for the right one) is the most expensive way to buy drainage. A properly built system, by contrast, is a decades-long fix protecting a foundation whose repairs cost many times more — see our guide to foundation repair for what that math looks like.
What a Proper Install Includes
At Scott Lockhart Drainage Contractor, a French drain means: the trench cut to the right depth and slope, filter fabric, washed gravel, perforated pipe laid to carry water — not hold it — a real discharge point, and the surface restored. Diagnosis first, design second, build once.
Get Your Number
The honest answer to "what will my French drain cost?" comes from your property, not a national average. The walk-through and consultation are free, and you'll know what we'd build, why, and where every drop of water will end up before anything is scheduled.
Call Scott directly: 512-790-8564. Scott Lockhart Drainage Contractor — Licensed Right of Way Contractor, City of Austin — serving Austin, Dripping Springs, Wimberley, Kyle, Kerrville, and Fredericksburg since 1984.
