Site Prep & Foundation Excavation in North Idaho and Spokane
Every house, shop, and addition is only as good as the ground under it. Stone Fox Construction handles complete site preparation and foundation excavation for homeowners and custom home builders across Post Falls, Coeur d'Alene, Hayden, Rathdrum, Spokane, and the surrounding North Idaho and Eastern Washington communities. We're a licensed and insured excavation contractor, and we're trusted by award-winning custom home builders to get their projects out of the ground on time and on grade.
What's included
Foundation excavation for full basements, daylight basements, crawl spaces, and slab-on-grade homes. Building pads for homes, garages, and shops. Footing and stem wall digs, over-excavation, and structural fill. Driveway cuts and access roads to the building site. Utility trenching for water, sewer, and power. Foundation drains and gutter drain lines tied to a daylight point, dry well, or swale. Backfill and final grading once the foundation is in.
How we do it
We run a Takeuchi TB2150R and a Bobcat E48, both equipped with tiltrotators. A tiltrotator lets the bucket tilt and rotate a full 360 degrees, so we can cut clean, square footing walls and shape grade around corners without constantly repositioning the machine. That means tighter digs, less over-excavation, and less disturbance to the rest of your lot. Every dig is checked with a rotary laser, so your foundation contractor gets a flat, accurate bottom at the elevation on the plans.
North Idaho ground isn't always cooperative. We've dug through native clay, cobble, and solid basalt. When we hit rock, we bring in a hydraulic breaker and plan the work in one continuous window so you aren't paying for multiple mobilizations. Where the plans call for it, we compact structural fill and slab base to 95% Proctor or better.
Working with builders
We know a foundation dig sits in the middle of a tight schedule. We coordinate with your foundation crew, show up when we say we will, and keep the site clean and accessible for the trades that follow. One call covers the dig, the utilities, the drains, the compaction, and, if the property needs one, the septic system.
Frequently asked questions
How much does foundation excavation cost?
It depends on the footprint, depth, soil and rock conditions, access, and whether spoils stay on site or get hauled off. We walk the site and review your plans before quoting so there are no surprises. Rock excavation is quoted with a clear allowance so you know exactly how it's handled.
How long does a foundation dig take?
Most residential foundation digs take one to three days of machine time. Rock, clay, or tight access can add time, and we'll tell you up front.
Do I need plans before you can quote?
Plans help us give an accurate number, especially the foundation sheet. If you're still early in the process, we can give you a ballpark from a site visit and firm it up once plans are ready.
Do you handle permits?
The building permit is typically pulled by the homeowner or builder. We work to the approved plans and coordinate with inspectors as needed.
Related services: Site Compaction & Concrete Prep, Utility Trenching, Drainage Services, Clearing & Grading Services.
Call (208) 786-0973 or request a free estimate online.
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