French Drain Cost in Knoxville (2026): Average Price & Estimate

French Drain Cost in Knoxville

Estimated french drain cost in Knoxville

$1,600–$4,850

Roughly about 8% below the national average.

Affordable labor keeps prices below average.

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Based on Knoxville, TN pricing.

Estimated cost range

$1,600–$4,850

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An estimate for planning, not a quote. Get written quotes from local pros below.

Estimate, not a quote. Local prices vary by contractor and project. These are 2026 estimates for Knoxville, TN. Get written quotes from licensed Knoxville contractors before you budget.

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What to know about french drain in Knoxville

Wet soils and heavy rain in Knoxville stress foundations, so grading and drainage are part of a durable fix.

What affects french drain cost in Knoxville

Beyond the local market, the same factors that drive french drain cost everywhere apply in Knoxville:

Length and depth of the drain.
Type: yard, interior basement, or exterior foundation.
Soil conditions and digging difficulty.
Landscaping or concrete to remove and restore.

French Drain cost by drain type in Knoxville

These figures are adjusted for Knoxville pricing (about 0.92x the national average), so they reflect what local homeowners actually pay.

Estimated french drain cost by drain type in Knoxville (2026)

Drain type	Cost in Knoxville	Typical total
Surface / yard drain	$16.10 to $48.30 /ft	About $1,600 to $4,850
Footing / interior basement	$32.20 to $96.60 /ft	About $3,200 to $9,650
Exterior foundation	$36.80 to $110 /ft	About $3,700 to $11,000

Frequently asked questions

How much does french drain cost in Knoxville?

In Knoxville, TN, french drain typically costs $1,600 to $4,850 in 2026 for a standard project, about 8% below the national average. Your exact price depends on size, materials, and scope.

Why does french drain cost more or less in Knoxville?

Affordable labor keeps prices below average. Labor rates, permit costs, and local demand are the main reasons Knoxville prices differ from the national average.

Do I need a permit for french drain in Knoxville?

Most french drain projects require a permit. Requirements vary by city and Tennessee jurisdiction, so confirm with your local building department. A licensed contractor usually pulls the permit for you.

When is the best time of year for french drain in Knoxville?

In Knoxville, aim for spring or fall. Summer heat, humidity, and afternoon storms can cause delays on exterior projects, and late summer is peak storm season.

Is french drain cheaper outside Knoxville?

Sometimes. Knoxville runs about 8% below the national average. Nearby smaller towns with lower labor costs can come in cheaper, while denser urban areas often cost more. Always compare quotes from contractors who serve your specific area.