Excavation is the below-grade work that reshapes what your property can do: digging a foundation, cutting a pond, opening a drainage swale, or moving dirt to match a design elevation. IronJaw runs excavators from compact to full-size across Summerville, Charleston, and the Lowcountry, and we cut to grade, not approximately.
The owner assesses every excavation project before quoting. We review your drawings if you have them, walk the site regardless, mark utilities through SC 811, and give you a firm number before equipment mobilizes.
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Excavation Across Summerville & Charleston, SC
Excavation goes deeper than surface grading. It's the work of reshaping terrain: digging a foundation to design depth, cutting a pond into a hillside, opening a drainage channel that actually moves water, or shifting thousands of cubic yards of earth to get a building pad to the elevation the engineer called for. When it's done right, the next contractor arrives to a surface they can work from without corrections. When it's done wrong, every trade after it inherits the problem.
We run compact excavators for tight residential yards where the machine has to fit between the house and the fence, and full-size equipment for larger earthmoving projects where volume and depth are the drivers. We read and work from civil drawings when the project has them, and from owner-supplied grade stakes for simpler residential work. Either way, the cut goes to design elevation, not to "close enough."
Every excavation project gets a site assessment by the owner before a price exists. Drawings get reviewed, the ground gets walked, utilities get confirmed, and the quote matches the actual scope.
Get a Free On-Site Estimate →Excavation that misses grade by six inches creates problems for the foundation contractor, the paving crew, and you. Problems that cost more to fix than the excavation cost to do right. Here's what "right" actually means.
We excavate to within a tenth of a foot of design elevation, checked with bench marks throughout the dig. The foundation contractor, the pool installer, or whoever comes after us arrives to a surface that matches what the drawings call for.
A compact excavator fits into a residential backyard without destroying the lawn, the driveway, or the neighbor's fence. A full-size machine moves serious volume on open sites. We bring the one that fits the work and the space.
SC 811 is called, utility locates are confirmed on-site, and the dig plan routes around everything underground before excavation starts. Hitting a gas line or a fiber run because nobody checked isn't a risk we take.
House and outbuilding foundations dug to design depth, squared, and cleaned so the foundation crew can set forms or pour immediately. Residential and accessory structures.
Residential ponds dug and shaped to your design. Banks graded, overflow routed, and the basin sized for the water table and soil conditions on your property.
Stormwater channels, swales, and drainage ditches cut to grade. The kind of below-grade drainage work that surface grading can't solve.
Pool shell excavation coordinated with your pool contractor's spec. Dug to shape, to depth, and to the tolerance the installer needs.
Moving dirt from where it is to where it needs to be. Building pads raised, slopes cut back, low areas filled. The heavy earthwork that happens before finish grading.
Trenches for water, sewer, electrical, and drainage lines dug to depth and grade. Backfill and compaction included when the scope calls for it.
Call (854) 300-4979If you have civil drawings, we review them before the walk. On-site, the owner confirms design grades, excavation limits, utility locations (SC 811 marks verified), and access for equipment. The quote is built from the actual scope, not a rough estimate.
Equipment arrives matched to the work and the site. Compact for tight residential yards, full-size for volume earthwork. Adjacent property and access routes are protected from tracking damage.
The dig happens in controlled lifts with bench checks throughout. Grade is verified against design elevation at each stage, not just at the end. No "close enough" on depth or slope.
Excavation edges are cleaned and squared, the haul route is cleared of tracked dirt, and the site is ready for the next trade to begin. You walk the finished grade before we leave.
A pond you've been wanting to dig, a foundation for an addition or outbuilding, a drainage problem that surface grading can't solve, or a pool excavation your installer needs done right.
The below-grade work your project depends on being accurate. Foundation digs, utility trenches, and site earthwork cut to the elevation the drawings call for.
Ponds, drainage channels, road cuts, and grade work on rural parcels. The earth-moving work that turns raw land into something functional.
Excavation pricing depends on the machine, the volume, and the complexity. A compact excavator doing a half-day residential job and a full-size machine moving a thousand yards of earth over three days are different scopes at different rates.
For smaller residential projects we can quote hourly with a firm estimate of total hours. For larger or more complex work we quote by scope after reviewing drawings and walking the site. Either way, you know the number before the machine shows up.
Send us your drawings if you have them, or just call and describe the project. We'll walk the site, review the scope, and give you a firm number before equipment mobilizes.
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How Much Does Excavation Cost in SC? (2026 Pricing Guide)
We run excavation jobs across the four-county Lowcountry: foundations, ponds, drainage, pools, and earthwork from Summerville out to Colleton County. Don't see your area? Call. If we can reach it, we'll quote it.
"IronJaw excavated a pond on our rural property near Walterboro. Came out to assess it, gave us a fair price, and dug it exactly to the shape we wanted. The whole crew was professional."
"Called IronJaw for driveway grading. Hadn't been touched in three years and was full of ruts. They regraded it the same week and it drains perfectly now. Will do annual maintenance with them."
"They demolished our old shed and hauled everything off. Clean site in half a day. Fair price, showed up when they said. No surprises."
Excavation almost always triggers land disturbance permit requirements because it involves grading and earth-moving by definition. The SCDES NPDES Construction General Permit kicks in at one acre of disturbance statewide, and the coastal counties start lower. Foundation excavation and pond construction can also trigger separate municipal permits depending on the jurisdiction. Pond construction near wetlands or waterways adds USACE and SCDES review on top of that. We flag what your project likely triggers during the assessment. Below is the working reference IronJaw uses on every quote.
| Jurisdiction | Residential trigger | Commercial trigger | Notes |
|---|---|---|---|
| Charleston County | >5,000 sq ft | >5,000 sq ft | Stormwater permit required before building permit |
| Dorchester County | <1 ac: EPSC + $100; ≥1 ac: full CAA | <0.5 ac: EPSC; ≥0.5 ac: full CAA | Lower commercial threshold than state baseline |
| Berkeley County | ≥0.5 ac: full stormwater | ≥0.5 ac: full stormwater | Manual adopted 2009 |
| Beaufort County | >5,000 sq ft (if zoning permit) | ≥0.5 ac county permit | Within ½ mi of coastal water, ≥0.6 ac → SCDES NOI |
| SCDES statewide | <1 ac: Form 2628 notification; ≥1 ac: NOI + CGP | Same | Fees $125 federal + $100/disturbed acre (max $2,000) |
| Jurisdiction | Grand Tree | Protected Tree |
|---|---|---|
| City of Charleston | ≥24" DBH (excl. pine/sweetgum) | ≥8" DBH, ≥1-acre lots maintain 15 protected/acre |
| Charleston County | ≥24" DBH (excl. pine/sweetgum) | ≥8" DBH, violation fines now $500 per DBH inch |
| Mt. Pleasant | ≥24" (historic) | ≥16" DBH; pine ≥24", $50 permit fee via OPAL |
| Summerville | (no separate category) | ≥8" DBH, 16"+ goes to monthly Tree Protection Board |
| Dorchester County | ≥24" DBH (excl. pine) | >12" DBH; pine >24", 1:1 inch replacement ratio |
| Beaufort County | Live Oak/Longleaf 24"; Loblolly/Slash/Shortleaf 36"; other 30" | SFR with existing dwelling can remove non-grand trees (except in buffers) |
| Hilton Head | Specimen live/laurel oak ≥30" | ≥6" DBH (Natural Resources Permit required) |
| Berkeley County | None | No county tree ordinance; NPDES & wetland rules still apply |
Heads up: SCDHEC's environmental functions became SCDES on July 1, 2024. Old permits remain valid, and the current site is des.sc.gov. Wetlands work also requires USACE Section 404 review and SCDES Coastal Zone Consistency certification. Tidal or marsh alterations need a separate SCDES Critical Area Permit.
Sources: SCDES NPDES Stormwater · City of Charleston Tree Removal Info · Charleston County · Dorchester County · Berkeley County · Beaufort County · Town of Hilton Head
Digging in the Lowcountry means digging in sand, saturated soil, and a water table that shows up uninvited. The ground conditions here change how deep you can go, how fast you can work, and what the excavation looks like when it's done. Here's what we plan for on every project.
Lowcountry groundwater can sit within a foot or two of the surface, and on many residential properties you hit water before you hit design depth. Foundation excavations and pond digs regularly require dewatering during the dig to keep the hole workable. We plan for this before the machine shows up, not when the bucket fills with water.
Lowcountry sand and sandy loam slump. A vertical cut that holds perfectly in clay collapses in Lowcountry sand within hours if it isn't shored or battered. We cut excavation walls at the angle the soil can actually hold, which sometimes means a wider dig than the drawings suggest. We flag this during the assessment.
South Carolina law requires calling 811 before any excavation. On Lowcountry properties, especially in newer subdivisions, utility runs don't always follow the road right-of-way. Gas, water, sewer, and fiber lines can route through easements that cross your lot. We confirm all locate marks are in place and verified before the bucket drops.
A residential pond that holds water year-round in the Lowcountry depends on where the water table sits relative to the pond bottom. Dig too shallow and the pond dries out in October. Dig into the wrong soil layer and the water is murky. We assess the soil and water conditions during the walk and design the pond depth around what the property can actually sustain.
Every excavation produces spoil. On smaller residential jobs the dirt can often be spread on-site for grading. On larger pond or foundation digs, the volume can exceed what the property can absorb, and hauling it off becomes a meaningful line item. We account for spoil management in the quote so it doesn't become a surprise on dig day.
What we hear from homeowners and builders before the bucket hits the ground.
Call (854) 300-4979Depends on the scope. Machine size, dig depth, total volume, soil conditions, drawing complexity, and spoil management all drive the number. A compact excavator doing a half-day drainage fix and a full-size machine spending three days on a pond are different jobs at different prices. We quote after reviewing your drawings and walking the site.
Whichever one fits the work and the space. Compact for tight residential backyards where the machine has to thread between the house and the fence. Full-size for volume earthwork, deep foundation digs, and pond construction. We size the equipment to the project, not the other way around.
Yes, it's required by state law before any excavation or ground-disturbing work. We confirm that utility locates are in place and verified before the machine moves. If 811 hasn't been called yet, we'll walk you through the process.
Yes, and it's one of our most common residential excavation jobs. We assess the soil and water table during the walk, design the depth and shape around what the property can sustain, and dig it to spec. Banks are graded and overflow is routed as part of the scope.
Yes. We dig pool shells to your pool contractor's spec: shape, depth, and tolerance. We coordinate with the installer so the excavation matches what they need to work from. Send us the pool plan before the walk and we'll have the scope dialed in.
We cut to within a tenth of a foot of design elevation, bench-checked throughout the dig. The foundation contractor, pool installer, or whoever follows us should arrive to a surface that matches the drawings. If it doesn't, we fix it before we leave.
Fully insured. South Carolina doesn't require a specialty trade license for excavation, so verified insurance is the credential that matters, and we carry it. The owner is on every job. Call (854) 300-4979.
Whether it's a foundation that needs digging, a pond you've been thinking about for two years, a drainage problem that gets worse every rain, or a pool your family has been waiting on, the first step is the same: the owner comes out, reviews your drawings or stakes, walks the site, and gives you a firm number based on what the dig actually involves. You'll know the scope, the timeline, the spoil plan, and the cost before a machine shows up. We work across Summerville, Charleston, and the full four-county Lowcountry, and we call back within 24 hours.