A 20-foot French drain in Houston typically costs between $200 and $1,300, depending on labor, soil type, digging difficulty, pipe choice, gravel, and where the water is sent.
Clay-heavy soil common in Houston can add to the cost due to harder digging.
A simple DIY job can cost much less than a pro install, while a deep foundation drain will run higher. For a basic yard system, most Houston homeowners land somewhere in the middle.
