Lynnwood · Snohomish County
French Drain Installation in Lynnwood, WA
French drains, curtain drains and downspout tightlines in Lynnwood that collect water before it reaches the house and carry it to an approved outlet. Serving City Center, Alderwood, Meadowdale and Scriber Lake.
Why Lynnwood yards hold water
Glacial till over most of the city, hard digging with a perched water table in the wet months. Pockets of peat and soft organics show up around Scriber Lake and the creek bottoms. That is the root of most soggy lawns, wet crawlspaces and ponding patios we see in Lynnwood: water that cannot soak in perches on the hard layer and runs to the lowest point.
Rolling upland between I-5 and Puget Sound, sloping west toward Meadowdale where the ground breaks into steep ravines above the Sound. Slopes push water onto the next lot down, and flat ground leaves it nowhere to go, so the drain route and the grade around the house matter as much as the pipe.
Scriber Creek and Scriber Lake run through the middle of town, and Lund's Gulch and the Meadowdale ravines carry steep-slope and stream buffers on the west side. Where a drain can legally discharge depends on these features, so we plan the outlet first and the trench second.
Common french drains projects in Lynnwood
Soggy lawns
French drains for Lynnwood lawns that stay wet all winter because water perches on the hard till below.
Wet crawlspaces
Curtain and footing-side drains that keep water away from foundations and crawlspaces in City Center and Alderwood.
Downspout tightlines
Roof water carried in solid pipe away from Lynnwood foundations to an approved outlet.
Hillside water control
Curtain drains across Lynnwood slopes that stop water before it sheets over a bank or onto the next lot.
Flat-ground drainage
Drains, catch basins and ditch work for flat, low Lynnwood properties where water has nowhere to go.
What our french drains work in Lynnwood covers
- French Drains
- Curtain Drains
- Downspout Tightlines
- Catch Basins
- Yard Regrading
- Material Delivery
Permits & Rules
Drainage rules in Lynnwood
Small yard drains usually do not need a permit, but connecting to a storm system, working near a stream or wetland, or changing how water leaves the property can need approval from the City of Lynnwood. Outside city limits, Snohomish County Planning and Development Services (PDS) handles it.
Water can go to an existing storm system, a dispersion area or an infiltration trench where the soil allows. It cannot be pointed at a neighbor or dumped over a slope.
Cost & Timing
What affects the cost of french drains in Lynnwood
We do not publish flat prices because no two Lynnwood sites are the same. These are the things that move the number most here.
Slope and access
Steep Lynnwood lots take smaller machines, more careful staging and sometimes engineering, which adds time compared with flat, open ground.
Soft ground
Where Lynnwood soils are soft or wet, over-excavation, fabric and imported rock are often part of the job, and we price that in up front.
Buffers and permits
Work near Lynnwood's rivers, creeks, lakes or shoreline can need permits and limits on where machines go. That affects scope and schedule more than price.
Haul-off and disposal
How much material leaves the site, and what it is, drives cost. Our own trucks keep that predictable on Lynnwood jobs.
When to schedule french drains in Lynnwood
French Drains in Lynnwood goes best in the drier months, when soil compacts properly and trenches stay open. Wet-season work is doable with erosion control and the right material, and we plan for it in the quote.
Lynnwood's till soils hold water through the winter, which is when drainage problems show up. That is a good time to see where water goes, and the dry season is the time to fix it.
Where We Work
Drainage work across Lynnwood
Lynnwood is one of the fastest-changing cities in south Snohomish County. The City Center around the light rail station is filling with new buildings, while the neighborhoods around it are mostly established single-family lots that are getting remodeled, added onto and infilled.
We install French and curtain drains, catch basins and downspout tightlines across City Center, Alderwood, Meadowdale, Scriber Lake, Lynndale and North Lynnwood. Mostly 1960s and 70s ramblers and split-levels on quarter-acre lots, with a steady stream of teardowns, ADUs and townhome infill as the area densifies.
Drain rock, fabric and pipe are delivered on our own trucks, and the excavated soil is reused for regrading or hauled away.
We also do french drains nearby in Mountlake Terrace, Brier, Edmonds and Lake Forest Park. See everything we do in Lynnwood, read our full guide to french drains, or browse all service areas.
Why DirtRaptor
Why Lynnwood owners call us for french drains
Owner on the machine
On Lynnwood jobs you talk to the person who walks the site, writes the quote and runs the equipment.
Trees and dirt, one crew
If trees are in the way of your Lynnwood project, we take them down ourselves instead of waiting on a separate tree service.
Our own trucks
Haul-off and deliveries run on our schedule along I-5 and I-405, not a subcontractor's.
Built for slopes
We plan machine placement, drainage and erosion control for Lynnwood's sloped ground before we start.
How a french drains job runs
- 01
Find the Water
- 02
Plan the Outlet
- 03
Trench, Fabric, Rock & Pipe
- 04
Backfill & Grade
Real Jobs
Recent DirtRaptor work near Lynnwood
Demolition · Edmonds, WA
Driveway Removal & Concrete Prep
Tearing out an old blacktop driveway and prepping the ground for a new concrete pour — broken material hauled off, base left clean and ready.
Demolition · Everett, WA
Condemned 100-Year-Old Shed Teardown
A 100-year-old shed, condemned and unsafe, brought down and hauled off — the site left graded flat and clean.
Questions
French Drain Installation in Lynnwood: FAQs
Will a French drain fix my wet yard in Lynnwood?
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Often, especially combined with regrading. Glacial till over most of the city, hard digging with a perched water table in the wet months. A drain plus better grading handles most of what that causes.
Where can drainage water go in Lynnwood?
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To an approved outlet: a storm system, a dispersion area or an infiltration trench where the soil allows. Scriber Creek and Scriber Lake run through the middle of town, and Lund's Gulch and the Meadowdale ravines carry steep-slope and stream buffers on the west side.
Do I need a permit for a French drain in Lynnwood?
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Usually not for a small yard drain. Storm connections or work near streams, wetlands or slopes can need approval from the City of Lynnwood. We confirm before digging.
How much does french drains cost in Lynnwood?
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It depends on the site, so we quote after a free site walk rather than guessing on the phone. The biggest drivers in Lynnwood are usually slope and access, soft ground, buffers and permits. You get a written number with inclusions and exclusions spelled out.
When is the best time to schedule french drains in Lynnwood?
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French Drains in Lynnwood goes best in the drier months, when soil compacts properly and trenches stay open. Wet-season work is doable with erosion control and the right material, and we plan for it in the quote.
I'm adding an ADU in Lynnwood. Can you handle the site work?
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Yes. ADU jobs usually need a small footprint excavated, a utility trench back to the house, and a few trees or a slab out of the way first. We do all of that on one mobilisation and haul the spoil on our own trucks.
Why does my Lynnwood yard stay soggy all winter?
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Lynnwood sits on glacial till, which lets almost nothing soak in. Water perches on top of it and runs to the lowest spot, often your crawlspace or patio. Regrading and a properly placed French drain usually fix it.
What is the difference between a French drain and a curtain drain?
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They are built the same way. A curtain drain is placed across a slope to intercept water before it reaches the house; a French drain collects water where it already pools.
Ready for a real number in Lynnwood?
Send the address and a few photos. We walk the site for free and come back with a written quote.
