HomeGuide's national 2026 figures put pool excavation at $1,500 to $5,000 in soft soil without obstructions, and $15,000 to $20,000 where boulders, hardpan or rock ledge get in the way. Around Vancouver, shop, pole barn and ADU pads are more common than pools.
We did not set the dollar figures on this page: they are national ranges from HomeGuide. In Clark County, wet-season clay, trees, slope, groundwater and haul distance are what push a real job up or down. Figures checked October 2026.
How much does it cost to excavate for an inground pool?
To dig an inground pool in soft, clear soil, HomeGuide's pool section gives $1,500 to $5,000, and its project table $1,000 to $5,000. Boulders, hardpan or rock can push the dig to $15,000 to $20,000. Building the pool in that hole is a separate $25,000 to $100,000.
Should the pool builder or an excavating contractor dig the pool?
The pool builder normally arranges the dig, often through an excavating contractor. Hiring one yourself works only when the hole matches the builder's plan exactly, so both must agree on layout, depth and groundwater handling first. We dig to the builder's stakes.
How long does it take to dig a pool in Clark County?
In dry, workable soil, a pool dig takes one to three days. Groundwater, wet clay or rock add days, and digging in the rainy season can mean pumping. HomeGuide's range is 1 to 3 days for small digs and 3 weeks or more for rocky ones.
Is hauling the dirt included in pool excavation?
Check, because a pool produces dozens of cubic yards of spoil and hauling is often a separate line. HomeGuide prices removal at $140 to $230 a cubic yard, or $1,400 to $2,300 for a full truck. On rural lots, clean soil can sometimes be spread or used to build up a low area.
What does filling in an old pool cost?
HomeGuide does not list a pool fill-in price. The work is draining and breaking or removing the shell, filling in compacted layers (fill dirt runs $5 to $25 a cubic yard) and grading. Your city or county may require a permit, and drainage through the old shell bottom matters in this wet climate.
What if the soil is soft, wet or rocky where the pool goes?
Rock slows the dig and raises the price, and HomeGuide notes rock on a pool dig can add $15,000 to $20,000 or more. Soft or wet clay may need over-digging, crushed rock and a groundwater plan. The contract should say how these surprises are priced before work starts.
What does site prep cost for an addition or ADU?
An addition or ADU needs grading and footing work. HomeGuide's nearest figures are $1,000 to $5,000 for grading new construction or an addition and $1,500 to $10,000 for foundation excavation; it has no ADU line. Trenches for water, sewer and power to the new unit are usually part of the job.
How much to dig and level a pad for a shop, garage, shed or pole barn?
HomeGuide prices excavating a driveway, patio or deck pad at $1,000 to $2,500, a fair starting guide for a garage, shed or pole barn pad. Big shop and barn pads on Brush Prairie or Battle Ground acreage cost more because of clearing, fabric and crushed rock. A thick rock base keeps the pad firm through wet winters.
Tell us about your project and we will come look at the ground, then send the scope and the price in writing. Call or text (360) 276-9112.