Concrete is the one part of a building you cannot go back and fix cheaply. Everything above it — the framing, the drywall, the cabinets, the floor you picked out — is sitting on work that gets buried the week after it is finished and then has to hold for the life of the house.
So the honest way to sell it is not with adjectives. It is to tell you exactly what we do, in the order we do it, and let you judge whether it sounds like somebody who has done it before. Here is a full job, start to finish.
Before any concrete arrives
A foundation is won or lost before a single truck shows up. We start from the builder's prints, lay the footprint out on the ground, and pull the diagonals to confirm the building is actually square — not close to square. A wall out by an inch at this stage is an inch that the framer, the roofer and eventually the cabinet installer all have to fight.
Then the footings. They get carried down onto undisturbed soil and below the frost line, because South Dakota ground moves: it takes on water in the fall, freezes, lifts, and drops again in the spring. A footing sitting on backfill or sitting shallow will ride that movement, and the crack it puts in the wall above will show up in the drywall two winters later.
We set the footing forms, place the reinforcing steel, and pour with a keyway so the wall that goes on top is locked to the footing instead of merely resting on it. Before we go any further, we shoot the elevations again. If the footing is not right, nothing after it can be.
Poured foundation walls
Poured walls are the core of this business and have been since 1998. We set steel forms to the height and thickness the plan calls for, tie the reinforcing schedule into them, brace the whole run, and then pour the wall in one continuous placement.
That last part matters more than anything else on this page. A wall poured in one go is monolithic — there is no cold joint partway up for water to find, and no mortar bed running horizontally through it every four inches. A block wall has dozens of those joints, and they are the weakest line in the wall in exactly the direction the backfill is pushing.
As the pour comes up we consolidate the concrete so it fills the form around every bar and leaves no honeycombing behind the face. We set the anchor bolts and the beam pockets while the mix is still live, rather than drilling for them later. Once the wall has cured enough to strip, we pull the forms, patch the tie holes and damp‑proof the exterior face before backfill goes anywhere near it.
Basements, crawl spaces, garage stem walls, additions, and full commercial footprints. If a builder needs a foundation on a schedule, that is the work we do most weeks of the year.
Got prints and a date to hit? 605-351-3550
Retaining walls
A retaining wall is not a decorative object with soil behind it. It is a structure holding back a wedge of wet earth that gets heavier every time it rains, and the walls that fail are almost always the ones that were built as landscaping.
We build ours in poured concrete on a proper footing, reinforced for the height being retained. Poured lets us follow a curve or a grade change in one continuous face instead of stepping it in blocks, and it gives a wall that does not rely on friction between stacked units to stay standing.
The part you will never see is the part that decides whether it lasts: drainage. Water that collects behind a wall and has nowhere to go doubles the load on it and then freezes. So we put washed rock and drain tile behind the wall and take the water somewhere it can leave. A wall without that is on a timer.
Residential terracing on a sloped lot, walk‑out basements, driveway cuts, erosion control on a bank that is losing ground each spring, and commercial grade separation. If you are not sure whether your slope needs a wall or just needs regrading, say so on the phone — we will tell you if you do not need us.
Flatwork — driveways, sidewalks, patios
Flatwork is the concrete you actually walk and drive on, and it is judged for twenty years on two things: whether it cracks where it was not supposed to, and whether it holds water.
Cracking is managed, not prevented. Concrete shrinks as it cures and it is going to relieve that somewhere, so we cut control joints on a spacing that decides where. Joints in the right grid give you straight, deliberate lines. No joints, or joints cut too late, gives you a random crack across the middle of a new driveway.
The rest of it is base and mix. We compact the base properly, because a slab is only ever as flat as what is under it, and we pour to a thickness that suits the load — a garage apron taking a loaded truck is not a garden path. Around here the mix also needs to be right for freeze‑thaw, because a Sioux Falls slab goes through that cycle dozens of times a winter, and that is what lifts the surface off a badly finished driveway.
Then grade. Every slab we pour is pitched to take water away from your foundation, not toward it. A patio that drains back against the house undoes the wall we poured for you in the first place.
Driveways, aprons and approaches, sidewalks and public walks, patios, garage and basement floors, steps, and equipment or shed pads. Broom finish as standard; ask about other finishes when you call.
Free estimate on flatwork 605-351-3550
Tear-out and disposal
Most flatwork jobs start with getting rid of what is already there. We break out and haul away the old driveway, walk or patio ourselves, and we take it with us when we go — you should not be left with a pile of broken concrete on the boulevard waiting on somebody else.
It also means one company is responsible for the whole thing. Nobody gets to tell you the new slab settled because of how the old one came out.
Who you are actually hiring
Siouxland K & K Construction Inc. has been pouring concrete in the Sioux Falls area since 1998 — twenty‑eight years. We work out of 6810 S Lyncrest Ave and we are licensed, bonded and insured.
We are an accredited business with the Better Business Bureau, a member of the Home Builders Association of the Sioux Empire, and a member of the Sioux Falls Area Chamber of Commerce. The builders' association membership is the one worth paying attention to, because the people voting on our reputation there are the general contractors who hire us and who would stop hiring us the first time a foundation came in late or out of square.
We are hiring. If you have run forms or finished flatwork and you want steady work with a local crew, call 605-351-3550 or email siouxlandkksf@gmail.com.