Independent and unbiased 2026 pricing data
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Charleston, SC

French Drain Cost in Charleston

Estimated french drain cost in Charleston

$1,750–$5,250

Roughly in line with the national average.

Coastal demand and storm codes keep costs near average.

Estimate your cost

Based on Charleston, SC pricing.

Estimated cost range

$1,750–$5,250

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An estimate for planning, not a quote. Get written quotes from local pros below.

Estimate, not a quote. Local prices vary by contractor and project. These are 2026 estimates for Charleston, SC. Get written quotes from licensed Charleston contractors before you budget.

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212 Main Perforated Flexible Drain Pipe, 4" x 25'
212 Main 212 Main Perforated Flexible Drain Pipe, 4" x 25'

$48.85

Corrugated perforated pipe to carry water away from the foundation.

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LAVEVE Landscape Fabric Weed Barrier, 4x100
LAVEVE LAVEVE Landscape Fabric Weed Barrier, 4x100

$29.99

Heavy 3.2oz fabric to wrap the gravel and keep silt out of the pipe.

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MIGHTY109 Grey Pea Gravel, 40 lb
MIGHTY109 MIGHTY109 Grey Pea Gravel, 40 lb

$59.99

Washed drainage rock to bed and backfill the trench.

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NDS 12" Square Catch Basin Drain Kit
NDS NDS 12" Square Catch Basin Drain Kit

$69.75

Catch basin with grate and adapters for surface water collection.

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What to know about french drain in Charleston

High water tables and storms near Charleston stress foundations, so drainage and proper fill are key.

What affects french drain cost in Charleston

Beyond the local market, the same factors that drive french drain cost everywhere apply in Charleston:

  • Length and depth of the drain.
  • Type: yard, interior basement, or exterior foundation.
  • Soil conditions and digging difficulty.
  • Landscaping or concrete to remove and restore.

French Drain cost by drain type in Charleston

These figures are adjusted for Charleston pricing (about 1.00x the national average), so they reflect what local homeowners actually pay.

Estimated french drain cost by drain type in Charleston (2026)
Drain type Cost in Charleston Typical total
Surface / yard drain $17.50 to $52.50 /ft About $1,750 to $5,250
Footing / interior basement $35 to $105 /ft About $3,500 to $10,500
Exterior foundation $40 to $120 /ft About $4,000 to $12,000

French Drain cost in Charleston vs other metros

How a french drain in Charleston compares with nearby and similar-cost metros, using 2026 local estimates.

Metro Estimated french drain cost vs national
Charleston, SC $1,750–$5,250 in line with the national average
Phoenix, AZ $1,750–$5,250 in line with the national average
Detroit, MI $1,750–$5,250 in line with the national average
Richmond, VA $1,750–$5,250 in line with the national average
Dallas, TX $1,700–$5,150 in line with the national average
Austin, TX $1,800–$5,350 in line with the national average

Frequently asked questions

How much does french drain cost in Charleston?

In Charleston, SC, french drain typically costs $1,750 to $5,250 in 2026 for a standard project, in line with the national average. Your exact price depends on size, materials, and scope.

Why does french drain cost more or less in Charleston?

Coastal demand and storm codes keep costs near average. Labor rates, permit costs, and local demand are the main reasons Charleston prices differ from the national average.

Do I need a permit for french drain in Charleston?

Most french drain projects require a permit. Requirements vary by city and South Carolina jurisdiction, so confirm with your local building department. A licensed contractor usually pulls the permit for you.

When is the best time of year for french drain in Charleston?

In Charleston, try to schedule major exterior work outside hurricane season (roughly June to November). Late fall through spring tends to be more reliable for roofing and siding.

Is french drain cheaper outside Charleston?

Sometimes. Charleston runs in line with the national average. Nearby smaller towns with lower labor costs can come in cheaper, while denser urban areas often cost more. Always compare quotes from contractors who serve your specific area.

French Drain cost in other cities

See the national French Drain cost guide