French Drain Cost in Seattle (2026): Average Price & Estimate

French Drain Cost in Seattle

Estimated french drain cost in Seattle

$2,300–$6,950

Roughly about 32% above the national average.

High labor rates and wet-climate detailing raise costs.

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Based on Seattle, WA pricing.

Estimated cost range

$2,300–$6,950

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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 Seattle, WA. Get written quotes from licensed Seattle contractors before you budget.

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What to know about french drain in Seattle

Soil movement around Seattle is usually modest, but local soil type still drives the right approach.

What affects french drain cost in Seattle

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

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 Seattle

These figures are adjusted for Seattle pricing (about 1.32x the national average), so they reflect what local homeowners actually pay.

Estimated french drain cost by drain type in Seattle (2026)

Drain type	Cost in Seattle	Typical total
Surface / yard drain	$23.10 to $69.30 /ft	About $2,300 to $6,950
Footing / interior basement	$46.20 to $139 /ft	About $4,600 to $13,900
Exterior foundation	$52.80 to $158 /ft	About $5,300 to $15,800

Frequently asked questions

How much does french drain cost in Seattle?

In Seattle, WA, french drain typically costs $2,300 to $6,950 in 2026 for a standard project, about 32% above the national average. Your exact price depends on size, materials, and scope.

Why does french drain cost more or less in Seattle?

High labor rates and wet-climate detailing raise costs. Labor rates, permit costs, and local demand are the main reasons Seattle prices differ from the national average.

Do I need a permit for french drain in Seattle?

Most french drain projects require a permit. Requirements vary by city and Washington 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 Seattle?

In Seattle, the mild climate means most projects can run year-round, with only the occasional rainy stretch to plan around.

Is french drain cheaper outside Seattle?

Sometimes. Seattle runs about 32% above 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.