WatertightHub
New Haven, CT

French Drain Installation Cost in New Haven

$1,700 – $7,200

Average french drain installation cost in New Haven · avg $4,450

  • Updated 2026
  • 12 local pros
  • Based on local project data
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At a glance · New Haven
Typical timeline
1–2 days
Permit
Usually required · ~$185
Local soil
glacial till
Freeze-thaw cycles
57 / yr
Local pros
12 available

French Drain Installation cost in New Haven, CT

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 New Haven.

Service in New HavenLowAverageHigh
Basement Waterproofing$2,600$5,700$8,750
Foundation Repair$2,500$6,100$9,700
Crawl Space Encapsulation$3,400$6,500$9,600
French Drain InstallationThis page$1,700$4,450$7,200
Sump Pump Installation$750$1,700$2,650

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

What affects the cost in New Haven

Annual rainfall
47"
Freeze-thaw cycles / yr
57
Frost depth
45"

New Haven's dense glacial till drains slowly and holds water against foundation walls, and roughly 57 freeze-thaw cycles a year work existing cracks wider each winter.

Permits in New Haven

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

Issuing authority: City of New Haven Building Department · typical fee ~$185

Get matched with french drain installation pros in New Haven

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

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French Drain Installation in New Haven: FAQ

How much does french drain installation cost in New Haven?+

In New Haven, french drain installation typically runs $1,700–$7,200, averaging about $4,450. The glacial till soil and 57 freeze-thaw cycles a year are the biggest local price drivers.

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

Structural foundation work and exterior excavation require a permit; interior waterproofing and minor crack sealing usually do not. Permits are handled by City of New Haven Building Department, with a typical fee around $185.

Is french drain installation worth it in New Haven?+

With 47" of annual rainfall and a 45" frost depth, untreated water intrusion in New Haven tends to worsen each freeze-thaw season, so most homeowners find addressing it early is far cheaper than structural repair later.