Residential Drainage Solutions in King County WA
Protect your home and yard from water damage with professional drainage systems designed for the Pacific Northwest.
Say goodbye to soggy lawns, pooling gutters, and foundation leaks — Sandbagger Northwest builds custom drainage solutions that actually work.
What We Fix
Got Water Problems at Home? We’ve Got the Fix.
Homeowners all across King County trust Sandbagger to solve their most frustrating water issues:
Pooling water around foundations or crawl spaces
Flooded basements or wet garages
Mushy lawns that never dry
Overflowing downspouts and trenching runoff
Sinking patios, cracked walkways, or water undercutting concrete
Our Residential Services
Residential Services
Drainage Systems Built for Your Home — and Built to Last
We design and install proven drainage solutions that solve water issues at the root. Click any service below to learn more.
French Drain Installation
Capture groundwater before it causes damage with a professionally installed French drain system tailored to your yard.
Underground Downspout Drainage
Bury gutter lines and direct water safely away from your foundation, landscaping, and walkways.
Drywell Systems
Divert stormwater into deep underground reservoirs that slowly release water into the surrounding soil.
Trench & Channel Drains
Perfect for driveways, patios, and walkways. These linear drains collect surface runoff before it floods key areas.
Catch Basins & Yard Drains
Capture water and debris at low points and prevent it from pooling or eroding your yard.
Yard Grading & Sloping
We reshape your property to make sure water flows where it should — not where it causes damage.
REVIEWS
What Homeowners Say
Sarah W., Shoreline, WA
Our yard was a swamp every winter — now it’s bone dry. These guys know exactly what they’re doing.
Jason H., Renton, WA
The French drain has completely changed our basement. Zero water since install.”
Locations / Service Area
Serving Homeowners Across King County WA
We proudly provide residential drainage services throughout:
Seattle
Burien
RENTON
KENT
DES MOINES
SHORELINE
TUKWILA
Bellevue
Federal Way
and more
FAQs
Residential Drainage FAQs
How do I know which drainage system I need?
We offer free site inspections and will recommend the best system based on your yard’s slope, soil, and water flow issues.
Will you dig up my yard?
Some trenching is usually required, but we work clean and always restore landscaping after installation.
Do you offer warranties?
Yes — we stand behind every system we install with a workmanship guarantee.
Ready to Fix Your Yard for Good?
Don’t wait until the next storm hits. Let us inspect your yard and give you a free, no-pressure quote.