Site Prep
We prepare lots for new homes and commercial builds around Indian Trail and Charlotte. The work covers clearing, cut and fill, building pads, compaction and the first grade.
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A utility contractor puts the lines in the ground that a house or a building runs on. Cornerstone Excavation Group installs underground utilities east of Charlotte: water mains and service lines, sanitary sewer lines, storm drainage pipe with the catch basins and structures it ties into, and the trenches that carry power, gas and telecom conduit. We work in North Carolina and across the state line into York County, South Carolina, for home builders, general contractors, developers, commercial property owners and homeowners on new lots.
We are an excavation contractor based in Indian Trail, and utility work uses the same machines and the same crew as our site work. That means the trench, the bedding, the pipe and the backfill come from one company, on one schedule. Cornerstone is 5.0-rated on Google, and estimates are free after we look at the plan and the site. Call (980) 315-5707.
Tell us about the job. We will get right back to you.
Most utility work east of Charlotte starts with a new house, a new building or a lot being cut into a subdivision. The plans call for a water service, a sewer lateral and somewhere for the roof and lot drainage to go. We dig those lines to the depth and grade the drawings call for, bed the pipe in stone, set the structures and backfill in compacted lifts. On a commercial site the storm system is usually the biggest piece: runs of pipe between catch basins, junction boxes at the turns and a headwall or a pond outlet at the end. We build the trench, set the pipe and the precast structures, and bring the ground back so the next trade can work.
Sewer runs on gravity, so grade is the whole job. Every joint has to fall the right amount over its length, and a low spot in the run holds water and solids for years. We shoot the line as we set it and check it before the trench closes. Water lines run under pressure, so depth, cover and bedding matter more than fall, and the line gets tested and flushed before it goes into service. Storm pipe sits between the two: it runs on grade like sewer but carries far more volume, so pipe size and inlet placement follow the engineer's drawings exactly.
The utility that serves the address makes the tap or the tie-in and inspects the work. Around Indian Trail that is usually Union County Public Works, in Charlotte and much of Mecklenburg County it is Charlotte Water, and in York County it is the town or county system for that address. We schedule the inspection, keep the trench open and safe until it passes, and close it after.
Depth comes from the plan and the utility's standard: water lines go below the frost line with the cover the utility requires, sewer follows the grade from the house or building to the main, and storm pipe follows the drainage plan. The trench is dug wide enough to bed and compact around the pipe, and deep cuts get a trench box or sloped walls so the crew can work in them. The photos on this page show that setup: a shored cut with a new hydrant assembly at the bottom, a storm structure being set in an open excavation, and a gravel bed with pipe risers going in.
Union County and the east side of Charlotte sit on Piedmont red clay over the Carolina Slate Belt. Clay holds a trench wall when it is dry and turns soft after rain, and rock shows up at depth on some lots. Rock slows a utility trench down and can change the route or the method. We tell you what we hit as soon as the machine finds it, and the plan gets adjusted from there instead of after the fact. Groundwater in a deep sewer cut gets pumped so the bedding goes in on firm ground.
Nothing gets dug until the locates are done. North Carolina 811 asks for three working days of notice before you dig, and South Carolina 811 covers the York County side. The marks cover public lines only, so we ask about private lines, irrigation, a well line or a drain field before the first bucket goes in.
For a home builder the utility package usually runs with the rest of the site work we already do: clearing the lot, cutting the pad, digging the footings, then setting the water, sewer and storm lines before the slab or the foundation wall goes in. One crew on one schedule keeps the trades from waiting on each other. Developers get the same thing across a section of lots, with the mains and the laterals run before the pads are finished.
Homeowners call about utilities when a new house goes up on a bare lot, when an old service line fails, or when a lot needs a storm drain to stop water from standing. On an existing property the job is mostly access and protection: getting a machine to the line without tearing up the whole yard, opening the trench, setting the new line and putting the yard back. Yard and lot drainage ties into the same storm work when the water has nowhere to go.
Every utility job starts with a look at the plan and the site, then a written estimate. Estimates are free, and the price follows the length and depth of the runs, the structures on the plan, the soil and the access. Call (980) 315-5707 and tell us what the drawings call for.
Free estimates across the Charlotte metro, Union County and the York County side of South Carolina.
(980) 315-5707From the first call to the last load hauled off, here is how it goes.
Call or text (980) 315-5707 and tell us what the job is. We ask what the access looks like and when you need it done.
We come out to see the ground, the access and where the water goes. The visit and the estimate are free.
We set how the equipment gets in, where the material goes and what order the work runs in. Utility locates go in through NC811 before we dig, and any permit stays in the owner or builder's name.
The machines come in and the job gets done in the order we planned. Weather moves earthwork, so we tell you when the schedule shifts.
Spoils, brush and demolition material leave on our dump trucks. We grade the ground back before the equipment comes off the site.
Common questions about utility installation across the Charlotte metro, Union County and the York County side of South Carolina. If yours is not here, call and ask.
We prepare lots for new homes and commercial builds around Indian Trail and Charlotte. The work covers clearing, cut and fill, building pads, compaction and the first grade.
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We dig foundations and footings for new homes, additions, garages and outbuildings. We also trench for water, sewer and utility lines, then backfill and grade once the foundation is in.
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We fix yards and lots that hold water after it rains. Regrading, swales, French drains and buried pipe move it away from the house.
Learn MoreHomeowners, builders and property owners have rated the work five stars on Google. Those jobs cover grading, land clearing, demolition cleanup, drainage and a retaining wall.
We come to the property, look at the ground and price the work from what is there. The visit and the estimate are free.
Clearing, grading, digging, utility lines, walls, ponds, drainage, demolition and hauling all come from us. One company handles each stage, so the site stays on one schedule.
We work out of Indian Trail in Union County, on the Mecklenburg County line. Charlotte, Matthews, Monroe, Waxhaw, Mint Hill, Concord, Fort Mill and Rock Hill are all in range.
Tell us about the job on the form, or call (980) 315-5707. We will get back to you and set up a free look at the site.
Tell us about the job. We will get right back to you.