Snohomish · King · Skagit · Pierce
Excavation & Site Work in Snohomish County
Foundation pits, footings, trenching, utilities, construction roads and building pads — dug to spec, inspected, and signed off.
What Excavation & Site Work Actually Involves
Excavation is the part of a build that everything else sits on. Before a footing is poured or a wall goes up, someone has to move the right volume of earth, to the right depth, on the right grade — and then prove it holds. Get it wrong and the problems surface years later as settling, cracking, or water in a crawlspace.
Site work covers foundation pits, footings, utility trenching, construction access roads, and building or equipment pads. On most residential jobs it also means over-excavating unsuitable soil and bringing in structural fill, compacting in lifts, and holding the site to the elevations on the plan so the inspector signs it off first time.
DirtRaptor runs its own machines and its own trucks, which means the digging and the haul-off happen on one schedule. Most small excavators subcontract the trucking and wait on someone else to show up.
Worth Knowing
Utility locates are free and legally required. Call 811 at least two business days before any digging in Washington. Hitting an unmarked line is the single most expensive mistake on a residential site — and the liability lands on whoever put the bucket in the ground.
The Process
How an Excavation Job Runs
Every site is different, but the sequence rarely changes. Knowing it up front makes the quote and the schedule make sense.
Site Walk & Utility Locates
We walk the property with you, confirm scope against the plans, and identify access. Locates go in before anything else — public utilities are marked free of charge, private lines (irrigation, septic, low-voltage) usually are not, and those are the ones that get hit.
Layout, Staking & Access
Grades and corners get staked from the survey or plan set. We plan the machine route, protect what stays, and build temporary access if the ground will not carry the iron. Access decisions made here drive most of the labour cost.
Excavation & Spoil Management
Dig proceeds to spec depth. Spoil is either stockpiled on site for reuse or loaded straight into our trucks and hauled — a decision that materially changes the price and gets made before we start, not halfway through.
Backfill, Compaction & Inspection
Structural fill goes in compacted in lifts rather than dumped and tracked over. We hold final grade to plan and stay on site through inspection so anything flagged gets corrected the same day.
Scope
What's Included in Site Work
A typical excavation scope covers everything from first cut to final grade. Larger commercial packages are quoted separately.
Foundation Excavation
Footings, stem walls, crawlspaces and full basements dug to plan depth with clean, stable sidewalls.
Utility Trenching
Water, sewer, power, gas and low-voltage runs trenched to depth with proper bedding and backfill.
Construction Access Roads
Temporary roads and turnarounds so concrete trucks and framing deliveries reach the pad without getting stuck.
Building & Equipment Pads
Compacted pads for shops, barns, RV parking and outbuildings, built to carry load rather than just look flat.
Rough & Finish Grading
Site graded to plan elevations with positive drainage away from every structure.
Spoil Haul-Off
Excess material loaded and hauled on our own trucks — no waiting on a subcontracted hauler.
Why Us
Why DirtRaptor for Excavation Contractor
Owner On The Machine
You talk to the person doing the work, not a salesperson who has never seen your site.
Arborist-Led Tree Work
Trees and dirt work handled by one company on one mobilisation — rare in this trade.
Our Own Trucks
Haul-off is not a marked-up subcontractor line. It is a truck we own and a schedule we control.
Since 2019
Years of Pacific Northwest ground, wet seasons, and county permit desks.
Honest Exclusions
Rock, groundwater and buried debris are excluded in writing, not discovered as a surprise invoice.
Free On-Site Quotes
A real number from a real site walk, not a range guessed over the phone.
Pricing
What Drives Excavation Cost
Excavation is priced on volume, access and disposal — not on square footage alone. These three factors move a quote more than anything else.
Access to the Work
Whether a machine can reach the dig or the material has to be moved by hand is the single largest labour variable in this trade. A tight side-gate job can cost double an open-access one of identical volume.
Soil, Rock & Groundwater
Clean dirt digs fast. Rock, hardpan, high water table or buried debris slow everything down. We quote on known conditions and carry an explicit exclusion for what nobody can see from the surface.
Haul-Off Volume & Distance
Whether spoil stays on site or gets trucked away can swing a foundation bid by thousands. Dump fees, round-trip time and material type all factor in.
The fastest route to an accurate number is a site walk. Quotes are free and there is no obligation.
Get My Free QuoteQuestions
Frequently Asked Questions
How much does excavation cost in Snohomish County?
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Residential excavation is usually quoted by the job rather than the hour, because the hour rate tells you nothing about how many hours a site will take. Cost is driven by dig volume, access, soil conditions and whether spoil is hauled off. The only accurate answer comes from a site visit — which is free.
Do I need a permit to excavate on my property?
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Often yes. Snohomish County and most cities require a grading permit once you move more than a threshold volume of earth, and separate permits apply near critical areas, steep slopes or wetlands. Foundation work is permitted as part of the building permit. We can tell you which apply during the site walk.
What happens if you hit rock?
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Rock, groundwater and buried debris are excluded from every quote, because no one can price what they cannot see. If we hit it, work stops and we price the additional scope before continuing. You are never billed for a surprise you did not approve.
Do you pour the concrete too?
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We excavate, prep and compact to spec, and coordinate directly with your concrete contractor on grades and timing. Confirming who is pouring early avoids the most common scheduling gap on residential builds.
How long does a foundation excavation take?
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A straightforward residential foundation on an accessible site is typically one to three days of machine time. Add days for haul-off, difficult access, over-excavation or weather. We give a realistic window with the quote rather than a best case.
Question not answered here? Send us the details and we will come back to you.
Often Booked Together
Related Services
Combining scopes on one mobilisation is almost always cheaper than booking them separately.
Land Clearing
Raw and wooded lots made buildable. Brush, thinning, stumps and access handled by one crew instead of three.
Grading & Drainage
Retaining walls, RV and equipment pads, and drainage correction that actually moves water away from the structure.
Hauling & Dump Truck Service
Own trucks, own schedule. Spoil hauled off, material delivered, bins dropped — without waiting on a subcontractor.
Excavation Contractor Across Four Counties
Serving Snohomish, King, Skagit and Pierce County, Washington. Send photos and a rough scope and we will come back with a real number.
