Earthwork Contractor forCommercial and Industrial Sites.
The build doesn't start when the steel goes up. It starts when the top soil gets moved.
What an Earthwork Contractor Actually Controls
Grading, excavation, site clearing, mass earth movement, subgrade prep - these are the decisions that set the pace for everything that follows. Get it right and the rest of the project moves clean. Get it wrong and you're chasing problems from the foundation up.
Koehn Construction Services self-performs earthwork on commercial and industrial projects across Kansas, Oklahoma, and Missouri. We run our own crews and our own equipment. That means the schedule doesn't depend on a subcontractor showing up. It depends on us.
What KCS handles.
Earthwork isn't one task. It's a sequence of work that has to happen in the right order, to the right tolerances. This is what KCS handles on a commercial site.
READY TO BUILDSite clearing and demolition
We strip the site - vegetation, existing structures, debris - and get the ground ready for work.
Excavation
Foundations, utility trenches, detention ponds. We dig to the depths the project requires and manage spoil efficiently.
Grading and mass earth movement
Rough grading establishes the site's finished contours. We move material where it needs to go and compact it to spec.
Subgrade preparation
Building pads and pavement both need a solid base. We prep subgrade to support whatever comes next, whether that's a concrete foundation or a paved surface.
Drainage
Poor drainage kills projects slowly. We establish positive drainage patterns during earthwork so water moves away from the building, not toward it.
Why earthwork and utilities under one team matters.
Earthwork and underground utilities are inseparable on most commercial sites. Trenches get dug. Pipe gets laid. Trenches get backfilled. When two different contractors own those steps, coordination problems follow. One crew digs too early. The other shows up late. The schedule slips and neither contractor owns the problem.
We self-perform both earthwork and site utilities. The same team that grades the site installs the underground water, sewer, and storm systems. There's no handoff to manage. No finger-pointing when something doesn't line up. One crew, one schedule, one accountable team.
HOW EARTHWORK CONNECTS TO THE REST OF THE PROJECT
Earthwork isn't a standalone scope. It's the foundation - literally - for every trade that follows.
KEEP SCROLLING ▸
Site Prep
Site prep has to be complete before utilities go in.
Utilities
Utilities have to be in before the foundation gets poured.
Structural Concrete
The structural concrete has to be right before the steel goes up.
Steel Structure
The steel structure goes up on everything that came before it. When KCS is the earthwork contractor, we're thinking about that sequence from day one.
We know what the concrete crew needs when they show up. We know what the utility installation requires before the backfill. That coordination doesn't happen by accident. It happens because the same team owns the work.
READY TO BUILD
Copan Shooting Range
Koehn Construction partnered with the Oklahoma Department of Wildlife Conservation to transform 7.5 acres of undeveloped land into a fully functional public shooting and archery range near Copan, Oklahoma.
VIEW THIS PROJECT →Common questions about commercial earthwork.
What does an earthwork contractor do on a commercial project?
An earthwork contractor handles all ground-level site preparation - clearing, excavation, grading, subgrade prep, and drainage. This work happens before any underground utilities are installed or foundations are poured. It sets the physical conditions every other trade depends on. At KCS, we self-perform earthwork with our own crews and equipment, which keeps the schedule in our hands.
How long does earthwork take before construction can start?
It depends on site size, soil conditions, and the complexity of the grading plan. A smaller commercial pad might take a few weeks. A large industrial site with significant earth movement can take several months. KCS develops a realistic earthwork schedule as part of pre-construction planning so you know what to expect before the first machine hits the ground.
Does KCS do earthwork as a subcontractor?
No, we do not work as a subcontractor on our self-perform trades. Our earthwork is either a stand-alone KCS project or part of the overall scope on a project we are already building.
What's the difference between rough grading and finish grading?
Rough grading establishes the general shape of the site - moving large volumes of material to approximate finished elevations. Finish grading brings the site to precise final grades specified in the civil drawings. Both are part of KCS's earthwork scope. Finish grading is especially important around building pads and paved areas where elevation tolerances are tight.
How does earthwork connect to site utilities?
Earthwork and utilities are tightly linked. Utility trenches get excavated during earthwork, pipe gets installed, and trenches get backfilled and compacted. When earthwork and utilities are managed by the same team - as they are at KCS - that sequence runs without coordination gaps.
The site has to be right before anything else can be.
Tell us about your project and we'll tell you what the earthwork scope looks like.