Planning a soldier pile and lagging wall? Cost depends on depth, soils, lagging type, access, and permits — not a single “per foot” number. Ruffhouse provides site-specific estimates for Washington and Oregon projects before mobilization.
Quick answer: Budget ranges move with excavation depth, steel/lagging materials, labor, dewatering, bracing/tiebacks, and city review fees. A soils report and site visit make the estimate real.
What drives the price
- Wall height / excavation depth and surcharge loads
- Pile size and spacing; timber vs steel vs concrete lagging
- Groundwater, dewatering, and difficult access
- Bracing, walers, or tiebacks for deeper cuts
- Seattle / local permits and shoring review timelines
Typical planning ranges (not a bid)
Industry ranges often cited for soldier pile walls can span roughly tens to low hundreds of dollars per square foot depending on design. Sheet pile or simpler lagging systems may price lower; specialized permanent systems higher. We quote fixed scope after assessment — not generic internet averages.
How to get a usable number
- Share soils data and drawings (or request an on-site assessment)
- Confirm temporary vs permanent retention
- Lock lagging and bracing approach with the design intent
- Receive a clear estimate before crews mobilize
Design choices: soldier pile and lagging wall design. Field work: construction · lagging construction. Broader shoring budget: excavation shoring cost analysis.
Need soldier pile, lagging, or deep excavation support in WA/OR?
Ruffhouse Construction LLC (Federal Way) — excavation, shoring, utilities, and related earthworks for developers and GCs. On-site assessment and a clear estimate before work begins.
Request a quote · Soldier pile installation · (253) 881-6230
Updated 2026-07-22.