Excavation and Foundations in Seattle- Snohomish & North Central Washington

Pin Pile Foundations (Steel Friction Piles)
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Ideal for the diverse soil types of the Pacific Northwest, Pin Piles are a high-efficiency foundation solution for sites with limited access or environmentally sensitive areas. By driving small-diameter steel pipes 2''  or 3'' schedule 40 or 80 galvanized pipe into the load-bearing strata of the earth, we provide a stable, vibration-free foundation that is perfect for DADUs, home additions, and deck retrofitting. This method minimizes site disturbance and is often the preferred choice for projects near existing structures or on steep slopes in King and Snohomish Counties.
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Helical Pile Systems
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For projects requiring maximum load capacity with minimal excavation, our Helical Pile installations offer a 'screw-in' foundation solution that is both fast and incredibly strong. These steel shafts with helical flighting are torqued deep into the ground to reach stable soil, providing immediate load-bearing capabilities. Helical piles are particularly effective for NCW regions like Wenatchee and Chelan, where variable soil conditions and rocky terrain require a foundation that won't settle or shift over time.
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 Soldier Pile & Lagging Wall Shoring​
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Soldier Pile & Lagging Walls are a proven method for deep excavation and slope stabilization, soldier pile walls provide the structural rigidity needed for challenging PNW terrain. By combining vertical steel H-piles with horizontal timber lagging, we create a robust shoring system that secures your site during construction. This is an ideal solution for steep-slope properties in Seattle or for creating usable flat space on uneven lots in North Central Washington.