French Drain Cost in San Antonio (2026 Price Guide)

4 min read · Local guide for San Antonio homeowners

French drains aren't one-size-fits-all, and neither is the price. Here's a realistic range for San Antonio yards.

Typical San Antonio price ranges

• Short, simple french drain: roughly $1,500–$3,000
• Average residential install: commonly $3,000–$5,000
• Long runs / multiple zones / hard caliche: $5,000–$6,000+
• Combined surface + subsurface system: priced per the design

Most San Antonio residential french drains fall between $1,500 and $6,000.

What drives the cost

Length and depth, how hard the soil and caliche are to dig, the discharge route, and whether the job is combined with surface drains or grading. Rocky San Antonio soil is tougher (and pricier) to trench than soft ground.

Why the cheapest bid often costs more

A drain installed at the wrong slope, with the wrong fabric, or discharging nowhere useful will clog or pond within a season. Paying a vetted pro to design it right the first time is cheaper than digging it up twice.