The cost of installing a French drain varies widely based on factors like location, materials, and labor. On average, homeowners can expect to spend between $1,000 and $18,000. For small, simple projects, a DIY installation may be cost-effective, but for larger or more complex drainage issues, hiring a professional ensures a proper and lasting solution. https://texasgardenmaterials.com/landscape-design-houston-tx/french-drain-installation-houston-tx/