WatertightHub
Rockville, MD

French Drain Installation Cost in Rockville

$1,650 – $6,400

Average french drain installation cost in Rockville · avg $4,050

  • Updated 2026
  • 12 local pros
  • Based on local project data
Get free estimatesSee cost breakdown ↓
At a glance · Rockville
Typical timeline
1–2 days
Permit
Usually required · ~$170
Local soil
clay and Piedmont soil
Freeze-thaw cycles
46 / yr
Local pros
12 available

French Drain Installation cost in Rockville, MD

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 Rockville.

Service in RockvilleLowAverageHigh
Basement Waterproofing$2,550$5,200$7,800
Foundation Repair$2,400$5,550$8,650
Crawl Space Encapsulation$3,300$5,950$8,550
French Drain InstallationThis page$1,650$4,050$6,400
Sump Pump Installation$700$1,550$2,350

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

What affects the cost in Rockville

Annual rainfall
42"
Freeze-thaw cycles / yr
46
Frost depth
30"

Rockville's clay-heavy soil drains slowly and holds water against foundation walls, steadily forcing moisture through cracks and cold joints.

Permits in Rockville

Structural foundation work and exterior excavation require a permit; interior waterproofing and minor crack sealing usually do not.

Issuing authority: City of Rockville Building Department · typical fee ~$170

Get matched with french drain installation pros in Rockville

12 established french drain installation companies serve the Rockville 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 Rockville: FAQ

How much does french drain installation cost in Rockville?+

In Rockville, french drain installation typically runs $1,650–$6,400, averaging about $4,050. The clay and Piedmont soil soil and 46 freeze-thaw cycles a year are the biggest local price drivers.

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

Structural foundation work and exterior excavation require a permit; interior waterproofing and minor crack sealing usually do not. Permits are handled by City of Rockville Building Department, with a typical fee around $170.

Is french drain installation worth it in Rockville?+

With 42" of annual rainfall and a 30" frost depth, untreated water intrusion in Rockville tends to worsen each freeze-thaw season, so most homeowners find addressing it early is far cheaper than structural repair later.