What is the price range for a French drain in Huntsville?
For planning in Huntsville clay: shallow yard drains run about $30 to $50 per foot, and deep clay trenches about $50 to $90 per foot. A typical 60 to 80 foot run often lands around $1,800 to $5,000. These are planning estimates, not bids. Your number depends on depth, length, outlet, and access.
What's in the price table?
One table, three numbers. These are the only bands we use anywhere on this site.
| Drain type | Planning range |
|---|---|
| Shallow yard drain | About $30 to $50 per foot |
| Deep clay trench | About $50 to $90 per foot |
| Typical 60 to 80 ft run | About $1,800 to $5,000 for the job |
Not a bid. We say that on every price we print, and we mean it. These ranges are for planning a budget before anyone has seen your yard. Your quote comes after we look at slope, soil, and where the water is allowed to go.
A shallow yard drain is the trench that picks up soggy lawn and surface-saturated soil. A deep clay trench goes lower, usually because water is getting to the foundation or the crawl, and digging heavy Madison County clay at depth takes longer and uses more stone. If you're not sure which you need, our guide on how deep a French drain should be in Huntsville clay helps sort it out.
What do the numbers look like on a real length?
Multiply your length by the band for your depth. Two examples, using only the bands above:
60 feet, shallow yard drain.
60 ft x $30 = $1,800 on the low end.
60 ft x $50 = $3,000 on the high end.
Planning range: about $1,800 to $3,000.
80 feet, deep clay trench.
80 ft x $50 = $4,000 on the low end.
80 ft x $90 = $7,200 on the high end.
Planning range: about $4,000 to $7,200.
Notice the second example runs past the $5,000 top of the typical-run band. That's the per-foot math doing its job. The $1,800 to $5,000 figure describes a common run. An 80 foot trench that's deep along its whole length is heavier work, and the per-foot band is the better guide for it.
Most yards aren't all one depth, either. A run might go shallow across the lawn and deeper near the house. In that case, price each section by its own band and add them.
What pushes a job to the top of the range?
The same handful of things show up on almost every expensive drain in Huntsville.
Outlet distance. The water has to go somewhere legal. If it can daylight a short distance downhill, that's cheap. If the pipe has to run a long way to reach a safe outlet, every one of those feet counts. A soak pit in clay is usually not a real outlet.
Rock. Hitting rock while trenching slows everything down. Some lots hit it and some don't, and nobody knows for sure until the digging starts.
Fences, walks, and driveways. Crossing hardscape means cutting and patching it, or boring under. Fences slow equipment access and sometimes have to come down in sections.
Downspout tie-ins. Connecting roof water is often part of solving the problem, but it adds pipe, fittings, and solid line that has to stay separate from the perforated drain. See can I connect downspouts to a French drain.
Wet, collapsing clay. Clay that slumps into the trench while you dig adds labor, and it's worst right after the storms that made you call.
For the full breakdown of each factor, read what drives French drain cost in Huntsville. That page covers the why. This one is the number table.
What's not included in these ranges?
Some work is a separate line item or a separate project:
- Storm system tie-in permits. Connecting to a public storm system may need approval from the city. That's paperwork and coordination outside the trench price. Our page on storm drain tie-in vs soak pit explains the options.
- Regrading. If the yard slopes toward the house, a drain alone may not fix it. Reshaping the grade is a different scope.
- Interior systems. Interior or crawl perimeter collection is a different product and isn't covered by this table. Quoted after inspection.
- Gutter replacement, sump pumps, and crawl encapsulation.
- Undoing a failed DIY trench before the new one goes in.
How do you get a real number for your yard?
Three steps, and you can do the first two before you call.
- Measure the length. Pace it or use a tape along the path you think the water needs to take, from the wet spot to where it could go.
- Note the wet spot. Where does the water sit, and for how long after rain? Is it in the lawn, against the foundation, or in the crawl? A photo after a storm helps.
- Call. We'll talk through depth and outlet, then look at the yard in person before giving you a quote.
You can also try the clay-soil drainage designer to sketch the system and discharge before you call.
Know roughly how many feet you need?
Know roughly how many feet you need? Call (256) 900-1970 for a quote on your yard.
FAQ
How much is a 100 ft French drain in Huntsville?
Multiply 100 feet by the band for your depth: about $3,000 to $5,000 shallow, or about $5,000 to $9,000 for a deep clay trench. Treat that as a planning estimate and get a site quote.
Why is clay more expensive?
Deeper trenches, more gravel, and slower digging. Clay also holds water, so the drain has to do more work.
Is this a bid?
No. It's a planning range until we see slope and outlet.
Know roughly how many feet you need?
Know roughly how many feet you need? Call (256) 900-1970 for a quote on your yard.
Or start with the clay-soil designer, then send the form.