What is the average cost of a French drain in Wilson County, TN?

Most residential French drain systems in Mt. Juliet and Lebanon run $2,500 to $12,000. A short single-run drain to relieve one downspout or wet spot sits at the low end; a full-perimeter or multi-zone system with catch basins sits at the high end. The biggest single variable is the discharge point — where the water is legally allowed to go.

Why are French drain quotes so different from each other?

Because the scope hidden under the price varies enormously. A cheap per-foot quote often excludes filter fabric, uses crushed limestone instead of washed gravel, and hand-waves the discharge point. Two quotes can describe completely different systems at the same length. Always compare the materials and the discharge plan, not just the price per foot.

Does a longer French drain always cost more?

Length matters, but depth, soil, access, and discharge distance often move the price more. Forty feet of hand-dug trench through tree roots to a far discharge point can cost more than eighty feet of open, machine-accessible trench to daylight.

French Drain Cost in Wilson County, TN (2026): What Actually Drives the Price

Why nobody can quote a French drain over the phone

When someone gives you a firm per-foot price before seeing your yard, they're guessing at the one thing that matters most: where the water is allowed to go. The trench is the easy part. The discharge — daylight on a slope, a pop-up emitter, a dry well, or an approved tie-in — is what turns a simple job into a complicated one, and it's invisible from a phone call. That's why every honest quote in Wilson County starts with a free site walk, ideally right after rain.

Below are the five factors that actually set the price, roughly in order of how much they move it.

The five cost drivers

1. Discharge point. If your lot slopes to daylight, the water has a free exit and the job stays simple. If it doesn't — flat lots, or the low point is toward the house — you need a pop-up emitter, a dry well, or a longer run to reach a legal outlet. This single factor can double a job.
2. Depth and length. Deeper trenches move more water but cost more to dig and haul spoil from. Length matters, but less than people expect — a short deep drain can cost more than a long shallow one.
3. Soil and obstacles. Wilson County's clay is slow to dig and heavy to haul. Tree roots, rock, existing utilities, and irrigation lines all slow the work. Machine-accessible open yard is cheap to trench; a narrow side yard dug by hand is not.
4. Materials done right. A correct system uses filter fabric and washed gravel, not crushed limestone fines. Skipping fabric is how a cheap quote gets cheap — and how the drain clogs in three seasons.
5. Restoration. Re-sod, re-seed, and cleanup are real line items. A quote that ignores them isn't cheaper; it just leaves you with a mud trench through the lawn.

Honest cost ranges in Mt. Juliet & Lebanon

These are typical installed ranges for Wilson County, 2026. Your quote will land somewhere inside based on the five factors above — the free evaluation is how we find exactly where.

Project type	Typical range
Short downspout-relief run (to daylight)	$2,500–$4,500
Standard yard drain, one zone, good discharge	$4,000–$7,500
Drain requiring pop-up emitter or dry well	$6,000–$10,000
Full-perimeter / foundation interception system	$8,000–$12,000+

FIG. 03 — Typical installed ranges, Wilson County 2026. The discharge point is what moves a job between rows.

How to read a French drain quote without getting burned

Three questions expose almost every corner-cut quote. Ask each one:

"Does the price include filter fabric and washed gravel?" If they hesitate or say crusher run, the drain will clog early. This is the number-one skipped item.
"Where exactly does the water discharge, and is that legal?" A vague answer means they haven't solved the hard part — and you'll find out mid-project.
"Is re-sod and cleanup included?" If not, add it to the price in your head before comparing.

A slightly higher quote that answers all three clearly is almost always cheaper than a low quote that answers none — because the low one either becomes a change-order later or fails early. The cheapest French drain is the one you only pay for once.

What we'd actually recommend

Sometimes the honest answer is that you don't need a full French drain at all — a $40 downspout extension or a small regrade solves it. Sometimes the water is a crawl space problem wearing a yard-problem disguise, and the fix belongs at the foundation. And if you want to understand why Wilson County yards create these problems in the first place, the red clay explainer covers the geology. The free evaluation is how we tell you which of these you're actually dealing with — before anyone quotes a number.