Arlington · Snohomish County
Grading & Drainage in Arlington, WA
Grading, French drains, retaining walls and RV and equipment pads across Arlington, from Smokey Point to the Stillaguamish. Built so water moves away from the house instead of toward it.
Why drainage matters on Arlington properties
Valley bottoms are river silts and sands with high groundwater. The plateau is largely glacial outwash, sandy and gravelly and well-draining, which is good digging. 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.
Flat river valleys along the Stillaguamish forks, with the Arlington plateau and Smokey Point to the south and west and wooded hills rising to the east. 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.
Both forks of the Stillaguamish and their tributaries carry wide stream buffers and floodplain rules. Many rural parcels also have wetlands or ditches to work around. Where drainage can legally discharge depends on these features, so we plan the outlet first and the trench second.
Common grading projects in Arlington
Pads for RVs, shops and equipment
Compacted gravel pads for RVs, trailers, shops and equipment on Arlington properties, built thick enough not to rut in the wet season.
Grading away from the foundation
Reshaping the ground around Arlington homes in Downtown Arlington and Smokey Point 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 Arlington.
Downspout tightlines
Connecting downspouts to solid pipe that carries roof water to an approved outlet instead of dumping it next to a Arlington foundation.
What our grading work in Arlington 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 Arlington
Inside city limits, the City of Arlington 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 Arlington
We do not publish flat prices because no two Arlington sites are the same. These are the things that move the number most here.
Soft ground
Where Arlington 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 Arlington's rivers, creeks, lakes or shoreline can need permits and limits on where machines go. That affects scope and schedule more than price.
Size of the property
On Arlington 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 Arlington jobs.
When to schedule grading in Arlington
Grading in Arlington 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.
On Arlington's floodplain ground, the river sets the calendar. Low-lying work is planned for the dry season, after high water has dropped.
Where We Work
Grading and drainage across Arlington
Arlington is where the north and south forks of the Stillaguamish River come together, and the area around it is farms, horse property, timber and fast-growing neighborhoods near Smokey Point and the airport. Pasture clearing, big tree removal and site prep for shops and new homes are everyday work here.
We regrade yards, install French drains and curtain drains, build block and rock retaining walls, and set gravel RV and equipment pads across Downtown Arlington, Smokey Point, Arlington Heights, Kent Prairie, Bryant and Oso area.
A historic downtown, new subdivisions toward Smokey Point, and a lot of acreage with barns, arenas, shops and pastures. 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 Marysville, Lake Stevens, Everett and Snohomish. See everything we do in Arlington, read our full guide to grading, or browse all service areas.
Why DirtRaptor
Why Arlington owners call us for grading
Owner on the machine
On Arlington 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 Arlington 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 SR 530, not a subcontractor's.
Rural property experience
Pastures, shops, arenas and long drives are everyday work for us around Arlington.
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 in Arlington
Tree Service · Arlington, WA
Alder Removal Over a Horse Pasture
Several alders leaning over a horse pasture, felled with precision so they dropped away from the fence line — protecting the fence and the horses.
Land Clearing · Arlington, WA
93-Year-Old Douglas Fir Stump Removal
Full extraction of a 93-year-old Douglas fir stump and root ball as part of a lot clearing in Arlington — a root system taller than the operator, pulled whole.
Questions
Grading & Drainage in Arlington: FAQs
Why does water collect around homes in Arlington?
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Valley bottoms are river silts and sands with high groundwater. The plateau is largely glacial outwash, sandy and gravelly and well-draining, which is good digging. 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 Arlington?
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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 Arlington (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 Arlington 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. Both forks of the Stillaguamish and their tributaries carry wide stream buffers and floodplain rules. Many rural parcels also have wetlands or ditches to work around. We plan the outlet before we trench.
How much does grading cost in Arlington?
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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 Arlington are usually soft ground, buffers and permits, size of the property. You get a written number with inclusions and exclusions spelled out.
When is the best time to schedule grading in Arlington?
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Grading in Arlington 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.
What jobs has DirtRaptor done in Arlington?
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Among others, we cleared leaning alders from a horse pasture and pulled a large Douglas fir root ball and stump, leaving the ground graded and usable. Both are on our Projects page with photos.
Do I need a forest practices permit to clear trees on my Arlington acreage?
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Sometimes. Cutting a few trees for a home site usually falls under local clearing rules, but larger timber harvests can trigger a Washington DNR forest practices application. We help you figure out which applies before work starts.
Do I need a permit for a retaining wall in Washington?
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Generally yes above four feet, measured from the bottom of the footing rather than finished grade — which catches people out. Engineered drawings are typically required at that point too. Lower walls near property lines, slopes or critical areas can also require review.
Ready for a real number in Arlington?
Send the address and a few photos. We walk the site for free and come back with a written quote.
