Bothell · Snohomish County
Grading & Drainage in Bothell, WA
Grading, French drains, retaining walls and RV and equipment pads across Bothell, from Canyon Park to downtown Bothell. Built so water moves away from the house instead of toward it.
Why drainage matters on Bothell properties
Valley bottoms are soft river deposits with a high water table. The hills are glacial till, firm to dig but slow to drain. That is the root of most wet-yard, wet-crawlspace and failing-patio problems we see. Water that cannot soak in runs along the surface or perches on the hard layer until it finds the lowest point.
The Sammamish River valley runs through downtown, with North Creek cutting north through Canyon Park. Westhill and the north end climb onto upland plateaus with some steep side slopes. Slopes push water downhill onto the next lot, and flat ground leaves it nowhere to go. Getting the grade right is cheaper than fixing what water does to a foundation.
The Sammamish River, North Creek and their tributaries are salmon-bearing streams with wide buffers, and much of the North Creek corridor is protected wetland. Where drainage can legally discharge depends on these features, so we plan the outlet first and the trench second.
Common grading projects in Bothell
Wet yards and crawlspaces
Regrading and French or curtain drains for Bothell yards that stay soggy all winter because water perches on the hard till below.
Retaining walls on slopes
Block and rock retaining walls that hold back sloped Bothell yards and driveways, built with drainage behind them so they last.
Pads for RVs, shops and equipment
Compacted gravel pads for RVs, trailers, shops and equipment on Bothell properties, built thick enough not to rut in the wet season.
Grading away from the foundation
Reshaping the ground around Bothell homes in Downtown and Canyon Park so it falls away from the house, the cheapest fix for water at the foundation.
Ditches and culverts
Cleaning and regrading drainage ditches, and setting culverts under driveways, on the low, wet ground around Bothell.
What our grading work in Bothell covers
- Retaining Walls
- French Drains & Footing Drains
- Rough & Finish Grading
- RV & Equipment Pads
- Yard Drainage Correction
- Erosion Control
Permits & Rules
Grading and retaining wall permits in Bothell
Inside city limits, the City of Bothell handles grading permits; outside them, Snohomish County Planning and Development Services (PDS). Small regrading and yard drains usually do not need one, but larger volumes of cut or fill, work in a critical area, or changes to how water leaves the property often do.
Retaining walls taller than about four feet, or walls holding back a driveway or slope, typically need engineering and a permit. We build to the approved plan and can tell you on the site walk when a wall is likely to need one.
Cost & Timing
What affects the cost of grading in Bothell
We do not publish flat prices because no two Bothell sites are the same. These are the things that move the number most here.
Slope and access
Steep Bothell lots take smaller machines, more careful staging and sometimes engineering, which adds time compared with flat, open ground.
Soft ground
Where Bothell soils are soft or wet, over-excavation, fabric and imported rock are often part of the job, and we price that in up front.
Size of the property
On Bothell acreage, longer haul distances inside the property and bigger volumes change the math. Bigger jobs often cost less per unit.
Haul-off and disposal
How much material leaves the site, and what it is, drives cost. Our own trucks keep that predictable on Bothell jobs.
When to schedule grading in Bothell
Grading in Bothell 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.
Bothell'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
Grading and drainage across Bothell
Bothell straddles the King and Snohomish county line, and the City of Bothell handles permitting on both sides. Downtown has been almost completely rebuilt in the last decade, and the north end around Canyon Park and Thrasher's Corner keeps adding homes on former wooded parcels.
We regrade yards, install French drains and curtain drains, build block and rock retaining walls, and set gravel RV and equipment pads across Downtown, Canyon Park, Thrasher's Corner, Westhill, Maywood, Queensborough and Country Village.
A mix of older homes near downtown and Westhill, 1980s and 90s subdivisions in the north end, and new construction on subdivided acreage. Older lots often have no real drainage at all, while newer ones sometimes have drains that were never connected. We find out which before we dig.
We also do grading nearby in Kenmore, Woodinville, Brier and Lake Forest Park. See everything we do in Bothell, read our full guide to grading, or browse all service areas.
Why DirtRaptor
Why Bothell owners call us for grading
Owner on the machine
On Bothell 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 Bothell 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-405 and SR 522, not a subcontractor's.
Built for slopes
We plan machine placement, drainage and erosion control for Bothell's sloped ground before we start.
How a grading job runs
- 01
Site Assessment & Water Tracing
- 02
Design & Elevations
- 03
Excavation & Base Preparation
- 04
Build, Drainage & Backfill
Real Jobs
Recent DirtRaptor work near Bothell
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
Grading & Drainage in Bothell: FAQs
Why does water collect around homes in Bothell?
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Valley bottoms are soft river deposits with a high water table. The hills are glacial till, firm to dig but slow to drain. When water cannot soak in, it follows the surface toward the house. Regrading so the ground falls away from the foundation, plus a drain where needed, usually solves it.
Do retaining walls need a permit in Bothell?
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Walls over about four feet, or walls supporting a driveway, building or slope, usually need engineering and a permit from the City of Bothell (or Snohomish County Planning and Development Services (PDS) outside city limits). Shorter landscape walls often do not. We confirm before building.
Where can drainage water go on my Bothell property?
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It has to go somewhere approved: an existing storm system, a dispersion area or an infiltration trench where the soil allows. The Sammamish River, North Creek and their tributaries are salmon-bearing streams with wide buffers, and much of the North Creek corridor is protected wetland. We plan the outlet before we trench.
How much does grading cost in Bothell?
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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 Bothell are usually slope and access, soft ground, size of the property. You get a written number with inclusions and exclusions spelled out.
When is the best time to schedule grading in Bothell?
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Grading in Bothell 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.
Is Bothell in King or Snohomish County for permits?
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Both. The city limits cross the county line, but inside city limits the City of Bothell is the permitting authority either way. Outside city limits, the county your parcel sits in takes over.
Can you clear a wooded lot near North Creek?
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We can clear what the rules allow. Land near North Creek or its tributaries usually carries a stream buffer that has to stay vegetated. We map the buffer on the site walk so the clearing plan and the quote match what can actually be done.
Why do retaining walls fail?
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Almost always drainage or base preparation. Water builds up behind a wall with nowhere to go and the pressure pushes it out, or the base was never compacted properly and it settles unevenly. Both are invisible once the wall is built, which is exactly why they get skipped.
Ready for a real number in Bothell?
Send the address and a few photos. We walk the site for free and come back with a written quote.
