French drain pricing varies based on depth, length, and soil conditions. Here is what to expect in 2025.
Real Numbers: What It Costs in Boise
For a professionally installed, high-capacity French drain system in the Treasure Valley, most homeowners invest between $3,500 and $8,500. This range covers standard residential projects including materials, excavation, and restoration.
Simpler, shorter drains (e.g., catching a single downspout extension) might range from $1,800 to $2,500, while complex hillside stabilization or full-perimeter basement systems often exceed $12,000.
What Drives the Cost?
Why the price variance? The biggest factor is rarely the pipe itself—it's the labor and logistics. Digging through the Boise Bench's "hardpan" clay or navigating around established landscaping in the North End adds significant time. Other factors include accessibility (can we fit a mini-excavator through the gate?) and the finish level (replacing sod vs. leaving a gravel path).
The ROI Perspective
It's natural to hesitate at the price tag, but consider the alternative. Foundation repairs for water damage in Idaho average over $20,000. Installing a French drain is asset protection. Furthermore, a dry, verified drainage system is a major selling point in our local real estate market, often recovering mostly or all of its cost upon resale.
Stop the Water Damage.
Water issues don't get better with time—they get more expensive. Get a professional opinion before the next storm.
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