French Drain Gravel in Seattle, WA

Pick the right gravel for a French Drain Gravel project in Seattle, WA. Material picks, depth, sizing, and delivered local pricing – usually $300-$1,500 for a typical residential job.

French drains live or die by the gravel size – too small and it clogs, too large and it doesn’t filter. This guide walks through the Seattle-specific picks: which materials hold up under local soil and climate, how much you’ll need, and how to plan delivery.

About French Drain Gravel projects

Material and depth guidance for a French Drain Gravel build in Seattle, WA.

How a french drain gravel project goes

1. Plan the areaMeasure the French Drain Gravel area in Seattle and stake the perimeter. Plan 3-4 inches of compacted gravel for most residential projects.
2. Excavate & prepDig 4-6 inches below grade. For clay-heavy Seattle soils, lay geotextile fabric before adding gravel.
3. Base courseSpread 2-3 inches of crushed stone base. Compact with a plate compactor in passes.
4. Top dressingAdd 1-2 inches of finished material. Rake level and roll.
5. Edge & finishInstall edging to keep the gravel from migrating. Walk the surface to settle high spots.

Estimate your material

French drain gravel in Seattle's climate

What works in Seattle starts with how Washington weathers a year. Damp marine climate with frequent rain. Drainage is the dominant design factor on every project. For french drain gravel work specifically, that means choosing material that handles local moisture and traffic loads without re-dressing every season.

The small market profile of Seattle also shapes how a project runs. Most jobs are residential, with the occasional school or municipal project. Truck access is usually wide and turnarounds run fast.

Where we deliver french drain gravel material in Seattle

Our delivery footprint around Seattle covers the core city plus a typical 35-mile radius. Recent french drain gravel drops have included:

• central historic streets in and around Seattle
• cul-de-sac neighborhoods in and around Seattle
• small farms on the city edge in and around Seattle
• retail centers with parking expansions in and around Seattle

If your address is outside that radius, send your ZIP through the contact form and we will confirm coverage within an hour.

Pricing for french drain gravel in Seattle

Here is what the recommended french drain gravel materials are running in Seattle right now. Full-truck orders (16 tons or more) typically save 15 to 20 percent off these per-ton rates.