2025 Huntsville Price Sheet
| Service | Price Range |
|---|---|
| Downspout extension (per downspout) | $150 – $400 |
| French drain (per linear ft) | $45 – $95 |
| Surface trench drain (per linear ft) | $80 – $160 |
| Catch basin + buried line | $650 – $1,400 |
| Yard regrading (per 100 sq ft) | $250 – $600 |
| Foundation perimeter drain (exterior) | $110 – $200 per ft |
| Sump pump + discharge (drainage end) | $1,400 – $2,800 |
| Complete drainage package (typical home) | $3,500 – $12,000 |
2025 Huntsville-area pricing. Actual price depends on inspection findings. Free written estimate, no obligation.
Why Drainage Matters More in Huntsville Than Most Places
North Alabama gets roughly 55-60 inches of rain per year — concentrated in heavy events that overwhelm undersized downspouts and poorly graded lots. The expansive clay soils common across Madison County hold this water against foundation walls and footings, where it drives the cycle of expansion and contraction that causes settlement, wall bowing, and crawl-space humidity. The single best way to break that cycle is to keep the water from reaching the foundation in the first place.
Newer construction in Hampton Cove, Hays Farm, and Edgewater often has drainage problems within five years because builder-grade gutters and downspouts dump straight at the foundation, and post-construction landscaping covers the original positive slope. Older homes in Five Points and Blossomwood typically have accumulated decades of drainage drift — settled walks, sagging yard areas, downspouts disconnected at the corner.
Downspout Extensions — Highest ROI in Drainage
If you do nothing else, extend your downspouts. The 2-3 feet of splash block most homes have is almost useless — heavy rain throws water in a 10-foot radius regardless of where the splash block sits. Underground downspout extensions ($150-$400 per downspout) carry water through buried PVC to a daylight pop-up or to a buried catch basin at least 10-20 feet from the foundation. On a typical four-downspout home, full extensions run $600-$1,600 and resolve the majority of foundation-side water issues by themselves.
French Drains — When and Where
French drains ($45-$95 per linear foot installed) collect groundwater and surface water below grade and carry it away from the foundation. The right application is along the uphill side of a home built on a slope, across a wet low spot in the yard, or along the perimeter of a chronically damp basement wall. The wrong application is everywhere — a French drain installed in a spot that doesn't actually collect water is wasted money.
Properly installed French drains use perforated PVC or HDPE pipe in washed #57 gravel, wrapped in geotextile fabric, with a positive slope to daylight or a pump station. Cheap French drains skip the fabric, use inadequate gravel, or have no proper outlet — and they fail within 3-5 years as silt clogs the pipe.
Yard Regrading
Building code requires positive slope of at least 6 inches in the first 10 feet away from the foundation. Many Huntsville homes have lost this slope due to settled soil, mulch buildup, or landscaping changes. Regrading ($250-$600 per 100 sq ft) restores the slope using imported clay or topsoil and re-establishes a watershed away from the home. We always recommend regrading as a first step before more expensive drainage installations — it's the cheapest fix that solves the biggest portion of water-against-foundation problems.
Foundation Perimeter Drains
When standard surface drainage isn't enough — typically homes with chronic basement seepage or active wall bowing — an exterior foundation drain ($110-$200 per linear foot) excavated to footing depth, sealed, and tied to daylight or a sump is the next step up. This is essentially exterior waterproofing, and it overlaps with the basement waterproofing pricing on our dedicated page. It's the most expensive drainage option and typically the most permanent solution for a wet basement.
Bundling Drainage With Foundation Work
If you're doing pier installation or crawl-space encapsulation, bundling drainage work into the same project usually saves money. The crew is already mobilized, equipment is on-site, and excavation costs are partly shared. Most Huntsville foundation repairs we install include some drainage scope, and many encapsulations include downspout extensions and regrading as part of the moisture-source remediation.
Financing Available
Drainage projects qualify for 0% financing for 12-24 months on most amounts, and bundle into larger foundation or waterproofing project financing terms.
Related Foundation Services & Pricing
Frequently Asked Questions About Drainage System Installation Cost in Huntsville AL
Will drainage fix an existing wet basement?
It depends on the source. Exterior drainage and regrading solve perimeter water issues. Wet basements caused by hydrostatic pressure or wall failure usually still need an interior waterproofing system.
How long does drainage installation take?
Downspout extensions: 1 day. Yard regrading: 1-2 days. French drain projects: 2-4 days depending on length. Full perimeter foundation drain: 5-10 days.
Do you need to dig up my whole yard?
No — French drains and downspout extensions use narrow trenches that are restored within days. Mature landscaping is protected and replaced.
What about my sprinkler system?
We map and protect existing irrigation. Damaged heads or lines are repaired at our cost. Coordinating with your irrigation contractor before the project is best practice.
Is drainage really worth it before foundation problems show?
Yes — proactive drainage typically costs 10-20% of what reactive foundation repair costs. It's the highest-ROI maintenance upgrade for a Huntsville home.