Camas is Clark County's highest incorporated city at 712 feet, and that elevation shows up in the ground the moment an excavator bucket breaks surface. Much of the residential terrain is cut-and-fill hillside — meaning the uphill side of a lot is native slope and the downhill side is older fill placed when the street was graded. Foundation excavation on ground like this is a different job than digging a flat lot in a valley community.
On a sloped Camas lot you are solving two problems at once: cutting into the hillside to reach undisturbed bearing soil on the high side, and building a retaining face to hold that cut while crews work below it. Water moves through the cut continuously during Clark County's October-to-May wet season, so dewatering and drainage planning matter before the first bucket of soil comes out. Rock is closer to the surface on many Camas slopes — what looks like a soil excavation can turn into a rock job after two feet, which changes equipment requirements mid-dig.
Full foundation excavation detail for Camas and the rest of Clark County.
Vancouver Excavation Co. begins a Camas foundation dig by reading the grade and laying out stepped footing elevations before equipment rolls. Stepped footings let the foundation follow the slope in increments rather than requiring an extreme single cut on the uphill side. We mark the excavation area in white and notify 811 at least two full business days before any digging begins, as required under RCW 19.122.030.
Once the dig starts, we cut the uphill face, shore or bench it as needed, and track soil conditions for any indication of shallow rock. If rock is encountered we have the right equipment to handle it rather than stopping work. Spoil generated on a sloped site cannot always be spread onsite — excess material is hauled off at $60–$120 per cubic yard depending on volume and soil type. Camas issues its own building permits, so your permit package should reference Camas city requirements, not county standards.
Foundation and footing excavation in Clark County typically runs $2,000–$6,500 for a residential project. On a sloped Camas lot the range tilts toward the upper portion of that window because cut-and-fill work involves more precise grading passes, potential shoring, and dewatering that flat digs don't require. Equipment and operator time runs $110–$190 per hour depending on machine size — rock conditions that require switching or supplementing equipment extend hours.
We don't quote foundation digs without seeing the lot grade, the soil report if one exists, and the footing plan. Too many variables — slope angle, rock depth, spoil volume, haul distance — move the number enough that a phone estimate would be unreliable. A written estimate after a site visit is the only number we stand behind.
Start here if your Camas project runs past foundation excavation.
The practical working window in Clark County runs mid-June through September, when ground that has held water since October finally dries enough for clean cuts and stable walls. Foundation digs can happen outside that window, but wet-season excavation on a sloped Camas lot means active dewatering, muddier conditions, and higher risk of cut-face instability. If your build schedule allows any flexibility, aligning the foundation dig with the dry season reduces both cost and complication.
If your permit is approved and your contractor is ready in the wet season, we work in those conditions — we just plan for them rather than pretending they don't exist. Staging equipment on steep Camas terrain requires more setup time in any season, so building lead time into the schedule is always worthwhile.
Vancouver Excavation Co. reads Camas ground on site, not from a photo.
On flat ground the excavator digs a box, loads trucks, and leaves. On a Camas hillside the crew is also managing a retaining face, routing water out of the cut, and sometimes switching equipment when rock appears. Those extra steps add hours and sometimes additional equipment to the job, which moves the cost toward the upper end of the typical $2,000–$6,500 residential range.
Camas issues its own building permits. If your address is inside Camas city limits — which covers 14.19 square miles — your excavation permit and foundation inspection come through the City of Camas, not Clark County. Confirm your parcel boundary before submitting paperwork to the wrong office.
Rock closer to the surface is genuinely common on Camas slopes. When we encounter rock, we assess depth and extent, then use the right equipment to work through it. The job does not stop — it adjusts. We tell you what we found, how it affects the timeline, and what the revised cost looks like before proceeding beyond that point.
A standard footing runs at one elevation. A stepped footing drops in increments — typically 2-foot vertical steps — so the foundation follows the slope without requiring an extreme single cut on the high side. Stepped footings bear on undisturbed native soil at each step rather than on fill, which is the structural reason they're common on Camas hillside lots.
Mid-June through September is the dry working window in Clark County. Sloped Camas terrain drains through the wet season, but cuts are more stable and dewatering is minimal when the ground has had months to dry out. If your build schedule is flexible, scheduling the foundation excavation in summer reduces complications and typically tightens the timeline.
Bring us your footing plan, your lot grade, and any soil report you have — we'll walk the slope and give you a written number that accounts for Camas hillside conditions rather than a flat-lot average. Call Vancouver Excavation Co. or use the form below, and we'll set up the site visit.