How Much Does French Drain Installation Cost in Idaho?
Idaho pricing is near the national average. Updated for 2026.
French Drain Installation Pricing in Idaho
In Idaho, the average cost for french drain installation is $4,600 per project, which is 8% lower than the national average of $5,000. Most Idaho residents pay between $920 and $9,200.
Idaho has costs that track closely with the national average, though prices can still vary between urban and rural areas within the state.
French drains redirect water away from your foundation using a perforated pipe in a gravel-filled trench. Critical for preventing basement flooding and foundation damage.
Idaho vs National Average
What Affects French Drain Installation Cost in Idaho?
Type
Interior: $40-$100/linear ft. Exterior: $60-$120/linear ft. Full perimeter: $5,000-$12,000
Additions
Sump pump: $500-$1,200. Drain tile: $20-$40/linear ft. Channel drain: $30-$75/linear ft
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💡 Tips to Save on French Drain Installation in Idaho
- 1.Interior French drains are cheaper ($40-$100/linear ft) than exterior ($60-$120/linear ft)
- 2.DIY is possible for simple exterior drains
- 3.Address grading issues first — sometimes regrading alone solves drainage
- 4.Bundle with waterproofing for better pricing
📈 French Drain Installation in Idaho Cost Trends (2020–2024)
Prices have increased +17.7% over the last 5 years
| Year | National Avg | YoY Change |
|---|---|---|
| 2020 | $3,907 | — |
| 2021 | $4,071 | +4.2% |
| 2022 | $4,336 | +6.5% |
| 2023 | $4,457 | +2.8% |
| 2024 | $4,600 | +3.2% |
Based on national averages adjusted for annual inflation. Actual costs vary by location and project scope.
💬 What Did You Pay?
Real costs reported by homeowners for French Drain Installation in Idaho
Recent Reports
Frequently Asked Questions
Do French drains really work?
Yes. A properly installed French drain is one of the most effective solutions for redirecting groundwater. They typically last 30-40 years with minimal maintenance.
French Drain Installation Cost in Other States
Related Cost Guides for Idaho
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