WatertightHub
San Antonio, TX

French Drain Installation Cost in San Antonio

$1,350 – $5,700

Average french drain installation cost in San Antonio · avg $3,550

  • Updated 2026
  • 12 local pros
  • Based on local project data
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At a glance · San Antonio
Typical timeline
1–2 days
Permit
Usually required · ~$150
Local soil
expansive clay
Freeze-thaw cycles
17 / yr
Local pros
12 available

French Drain Installation cost in San Antonio, TX

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 San Antonio.

Service in San AntonioLowAverageHigh
Basement Waterproofing$2,100$4,550$6,950
Foundation Repair$2,000$4,850$7,700
Crawl Space Encapsulation$2,750$5,200$7,600
French Drain InstallationThis page$1,350$3,550$5,700
Sump Pump Installation$600$1,350$2,100

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

What affects the cost in San Antonio

Annual rainfall
36"
Freeze-thaw cycles / yr
17
Frost depth
7"

San Antonio's expansive clay soil swells when it rains and shrinks in dry spells, and that constant movement is the area's leading cause of foundation cracks and wet basements.

Permits in San Antonio

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

Issuing authority: City of San Antonio Permits & Inspections Office · typical fee ~$150

Get matched with french drain installation pros in San Antonio

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

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French Drain Installation in San Antonio: FAQ

How much does french drain installation cost in San Antonio?+

In San Antonio, french drain installation typically runs $1,350–$5,700, averaging about $3,550. The expansive clay soil and 17 freeze-thaw cycles a year are the biggest local price drivers.

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

Structural foundation work and exterior excavation require a permit; interior waterproofing and minor crack sealing usually do not. Permits are handled by City of San Antonio Permits & Inspections Office, with a typical fee around $150.

Is french drain installation worth it in San Antonio?+

With 36" of annual rainfall and a 7" frost depth, untreated water intrusion in San Antonio tends to worsen each freeze-thaw season, so most homeowners find addressing it early is far cheaper than structural repair later.