WatertightHub
Knoxville, TN

French Drain Installation Cost in Knoxville

$1,350 – $5,450

Average french drain installation cost in Knoxville · avg $3,400

  • Updated 2026
  • 12 local pros
  • Based on local project data
Get free estimatesSee cost breakdown ↓
At a glance · Knoxville
Typical timeline
1–2 days
Permit
Usually required · ~$150
Local soil
clay and limestone-derived soil
Freeze-thaw cycles
48 / yr
Local pros
12 available

French Drain Installation cost in Knoxville, TN

Perimeter drainage that channels groundwater away from the foundation before it gets in. Below is how it compares with related foundation and drainage work in Knoxville.

Service in KnoxvilleLowAverageHigh
Basement Waterproofing$2,100$4,400$6,650
Foundation Repair$2,000$4,700$7,350
Crawl Space Encapsulation$2,750$5,000$7,250
French Drain InstallationThis page$1,350$3,400$5,450
Sump Pump Installation$600$1,300$2,000

Ranges reflect local labor and clay and limestone-derived soil soil conditions. Your quote depends on square footage, access, and severity.

What affects the cost in Knoxville

Annual rainfall
48"
Freeze-thaw cycles / yr
48
Frost depth
11"

Around Knoxville, dense clay soils trap groundwater beside the foundation, and seasonal freeze-thaw movement keeps opening new paths for water to seep in.

Permits in Knoxville

Underpinning, piering, and wall stabilization need a permit (often with an engineer's letter); small interior repairs typically do not.

Issuing authority: City of Knoxville Building & Zoning Department · typical fee ~$150

Get matched with french drain installation pros in Knoxville

12 established french drain installation companies serve the Knoxville area. Tell us about your project and compare free quotes, no obligation.

  • Local, established contractors
  • Compare multiple quotes in one place
  • Free, with no obligation

French Drain Installation in Knoxville: FAQ

How much does french drain installation cost in Knoxville?+

In Knoxville, french drain installation typically runs $1,350–$5,450, averaging about $3,400. The clay and limestone-derived soil soil and 48 freeze-thaw cycles a year are the biggest local price drivers.

Do I need a permit for french drain installation in Knoxville?+

Underpinning, piering, and wall stabilization need a permit (often with an engineer's letter); small interior repairs typically do not. Permits are handled by City of Knoxville Building & Zoning Department, with a typical fee around $150.

Is french drain installation worth it in Knoxville?+

With 48" of annual rainfall and a 11" frost depth, untreated water intrusion in Knoxville tends to worsen each freeze-thaw season, so most homeowners find addressing it early is far cheaper than structural repair later.