About Sandbagger Northwest
Expert drainage and erosion control built for the Pacific Northwest — and backed by real experience, sustainable practices, and a commitment to doing it right.
Who We Are
Woman-Owned. Seattle-Based. Pacific Northwest Strong.
Sandbagger Northwest is a stormwater drainage and erosion control company serving King County and surrounding areas. Founded with a clear mission to protect both property and the environment, we bring honest work, smart systems, and certified expertise to every job.
Our crew combines field experience with advanced equipment to deliver solutions that last — whether you’re dealing with a soggy backyard or a sloped commercial site.
Our Mission
Helping You Control Water — Sustainably and Effectively
Our mission is simple: to provide sustainable, reliable stormwater drainage and erosion control that protects homes, land, and local waterways. We believe in doing the job right, staying on budget, and always keeping our word.
We’re here to help you solve water problems the right way — not just patch them.
What We Do
Specializing in Stormwater Drainage and Erosion Control
We design and install solutions that move water where it belongs — safely and efficiently. Our services include:
We work with homeowners, contractors, and developers across King County, WA — and we understand local codes, soil conditions, and rainfall challenges better than anyone.
Residential Drainage Systems
French drains, downspout extensions, drywells, grading, catch basins, and more — built for homeowners dealing with soggy lawns, standing water near the foundation, or flooded crawl spaces. Most of our work is residential, and every system is designed to permanently solve the problem.
Commercial Stormwater & Erosion Systems
BMP installation, SWPPP monitoring, slope stabilization, retention ponds, and more — designed for compliance, durability, and long-term site protection.
Why Choose Sandbagger
The Right Team for the Toughest Water Problems
When you work with Sandbagger Northwest, you get:
Solutions built for Washington’s rainy seasons and soil types
Local, licensed, and RainWise-certified professionals
A Washington State Certified Erosion & Sediment Control Lead
A woman-owned business committed to doing things the right way
REVIEWS
What Clients Say
Homeowner in Kent, WA
Great service and super knowledgeable. They fixed a flooding issue I had for years — highly recommend!
Commercial GC, Seattle WA
Professional crew that handled the SWPPP and erosion plan for our entire project. On time, on budget, no surprises.
Let’s Solve Your Water Problems — Permanently
Whether you’re planning a new build, fixing a flooded yard, or prepping for inspection, we’re ready to help.