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BBB A+ Rated Structural and Waterproofing in Seattle, WA

Foundation Repair, Waterproofing, and Concrete Solutions Trusted Across the Seattle Area

Permanent Solutions Backed by 25+ Years in Washington

Homes in Seattle and across the Seattle Area face issues tied to soil movement, moisture, and shifting foundations. Explore solutions designed for your home’s structure—whether it’s built on a basement, crawl space, or concrete slab.

Foundation

Whether you have a slab-on-grade or deeper footing system, foundation problems can appear as cracks, shifting walls, or settling floors. We offer engineered repairs designed to permanently stabilize your home.

Basement

Basement walls under pressure from clay-rich soil and poor drainage can crack or leak. Our waterproofing systems and structural reinforcements keep this space dry and secure.

Crawl Space

Unsealed crawl spaces allow humidity, pests, and mold into your home. Encapsulation and structural repair protect air quality and structural integrity from the ground up.

Concrete

Sunken or cracked concrete isn’t just cosmetic—it creates drainage issues and safety hazards. Our polyurethane lifting method restores walkways, driveways, and patios in hours, not days.

1402 Puyallup Street
Sumner, WA 98390

Structural and Waterproofing Solutions You Can Trust

Seattle homeowners face real challenges: foundation settlement, basement leaks, crawl space humidity, and sinking slabs are all common across the Seattle Area. Backed by our Groundworks Seattle Branch, Groundworks delivers permanent solutions that protect your home for the long term.

Serving Seattle and Communities Across Washington

Our locally based team at the Groundworks Seattle Branch brings more than 25 years of experience helping homeowners across the state protect their homes from Washington’s toughest conditions. From Seattle to surrounding communities, we understand the impact of rainy winters, expansive soils, and coastal weather on your foundation, basement, and concrete. With personalized inspections, transparent pricing, expert installation, and long-term warranties, Groundworks is your trusted partner for lasting home repairs across the Seattle Area.

Trusted Repairs for 25+ Years. A+ BBB Rated.

Groundworks has earned the trust of homeowners across Washington by delivering real results with expert workmanship and long-term support. These ratings reflect thousands of successful projects and decades of standing behind our work.

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Groundworks, LLC BBB Business Review

All times are listed in PT

Mon
4:00am – 8:00pm
Tue
4:00am – 8:00pm
Wed
4:00am – 8:00pm
Thu
4:00am – 8:00pm
Fri
4:00am – 8:00pm
Sat
5:00am – 8:00pm
Sun
7:00am – 8:00pm
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