Shoreline · King County
Grading & Drainage in Shoreline, WA
Grading, French drains, retaining walls and RV and equipment pads across Shoreline, from Richmond Beach to North City. Built so water moves away from the house instead of toward it.
Why drainage matters on Shoreline properties
Glacial till over the uplands, with sand and silt layers and landslide hazard areas on the western bluffs. 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.
Upland plateau falling steeply west to the Sound at Richmond Beach and Innis Arden, cut by ravines like Boeing Creek. 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.
Puget Sound shoreline, Boeing Creek, Thornton Creek headwaters, McAleer Creek and Echo Lake carry critical-area buffers. Where drainage can legally discharge depends on these features, so we plan the outlet first and the trench second.
Common grading projects in Shoreline
Wet yards and crawlspaces
Regrading and French or curtain drains for Shoreline 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 Shoreline yards and driveways, built with drainage behind them so they last.
Grading away from the foundation
Reshaping the ground around Shoreline homes in Richmond Beach and Innis Arden 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 Shoreline.
Downspout tightlines
Connecting downspouts to solid pipe that carries roof water to an approved outlet instead of dumping it next to a Shoreline foundation.
What our grading work in Shoreline 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 Shoreline
Inside city limits, the City of Shoreline handles grading permits; outside them, the King County Department of Local Services. 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 Shoreline
We do not publish flat prices because no two Shoreline sites are the same. These are the things that move the number most here.
Slope and access
Steep Shoreline lots take smaller machines, more careful staging and sometimes engineering, which adds time compared with flat, open ground.
Soft ground
Where Shoreline 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 Shoreline'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 Shoreline jobs.
When to schedule grading in Shoreline
Grading in Shoreline 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.
Shoreline'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 Shoreline
Shoreline sits just north of Seattle, with Puget Sound bluffs on the west side and established neighborhoods across the middle. The new light rail stations are bringing a wave of redevelopment and townhome infill.
We regrade yards, install French drains and curtain drains, build block and rock retaining walls, and set gravel RV and equipment pads across Richmond Beach, Innis Arden, Richmond Highlands, Echo Lake, North City, Ridgecrest, Ballinger and Parkwood.
Mostly 1950s and 60s ramblers, larger view homes on the west side, and new townhomes near the light rail stations and Aurora. 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 Mountlake Terrace, Lake Forest Park, Brier and Edmonds. See everything we do in Shoreline, read our full guide to grading, or browse all service areas.
Why DirtRaptor
Why Shoreline owners call us for grading
Owner on the machine
On Shoreline 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 Shoreline 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 99 (Aurora Ave N), not a subcontractor's.
Built for slopes
We plan machine placement, drainage and erosion control for Shoreline'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 Shoreline
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 Shoreline: FAQs
Why does water collect around homes in Shoreline?
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Glacial till over the uplands, with sand and silt layers and landslide hazard areas on the western bluffs. 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 Shoreline?
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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 Shoreline (or the King County Department of Local Services outside city limits). Shorter landscape walls often do not. We confirm before building.
Where can drainage water go on my Shoreline 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. Puget Sound shoreline, Boeing Creek, Thornton Creek headwaters, McAleer Creek and Echo Lake carry critical-area buffers. We plan the outlet before we trench.
How much does grading cost in Shoreline?
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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 Shoreline 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 grading in Shoreline?
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Grading in Shoreline 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.
Can you remove the old foundation and trees for a Shoreline townhome project?
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Yes. We demolish the existing house, remove the foundation, take out the approved trees, protect the ones staying and excavate for the new building, all on one schedule.
Do you work on Richmond Beach and Innis Arden bluff properties?
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Yes, with care. Bluff properties need controlled drainage, light equipment near the edge and often a geotechnical review.
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 Shoreline?
Send the address and a few photos. We walk the site for free and come back with a written quote.
