French Drain Cost Calculator

A French drain is a trench filled with gravel or rock that contains a perforated pipe to redirect surface water and groundwater away from an area. It works by providing an easy path for water to flow through the gravel and into the pipe, which then carries the water to a more appropriate location like a drainage ditch or storm drain.

The cost of a French drain can vary widely depending on factors like length, depth, materials used, and labor costs in your area. On average, homeowners spend between $10 to $30 per linear foot for a professionally installed French drain. Our calculator provides a more accurate estimate based on your specific project details.

While it’s possible to install a French drain yourself, it requires significant physical labor and proper understanding of drainage principles. For simple, short runs on flat terrain, DIY may be feasible. However, for complex installations, steep slopes, or large areas, professional installation is recommended to ensure proper function and avoid potential property damage from improper drainage.

A properly installed French drain can last 30-40 years or more. The lifespan depends on the quality of materials used, proper installation, and regular maintenance. PVC pipes tend to last longer than corrugated pipes. Periodic inspection and cleaning can help extend the life of your French drain system.

The ideal time to install a French drain is during dry weather when the ground isn’t frozen or overly saturated. Late spring through early fall is typically the best period in most regions. Avoid installation during rainy seasons or when the ground is frozen, as this can make excavation more difficult and compromise the effectiveness of the installation.