Underground Utilities Contractor forCommercial andIndustrial Sites.
What's buried beneath your site matters as much as what's built above it.
WHAT AN UNDERGROUND UTILITIES CONTRACTOR INSTALLS
Underground utilities are what make a building work - water in, waste out, storm water managed. They go in before the foundation. They have to be right before anything gets built on top of them. Once they're buried, fixing mistakes is expensive.
Water lines
We size, route, and install water mains and service lines from the point of connection to the building. Sized to meet the project's needs and local code.
Sanitary sewer
Gravity sewer systems for commercial and industrial sites. Mains, laterals, manholes, and cleanouts - all coordinated with the civil drawings.
Storm sewer
Underground drainage that moves water off the site and away from the building. Catch basins, inlets, storm mains, and outfalls. Paired with the grading work done during earthwork, storm sewer is part of a complete drainage plan.
Underground detention
For sites with limited space above grade, underground systems manage storm water below the surface. We install these as part of the overall utility scope.
Why one team on utilities and earthwork matters.
Utilities and earthwork go in sequence. Earthwork opens the trenches. Utilities go in. Earthwork closes them. When two different contractors own those steps, things go wrong. One crew finishes late. The other can't start. The schedule slips. Both point at each other.
We self-perform both trades. The same crew that grades the site installs the pipe. Trenches open and close on our schedule. There's no handoff. Problems get solved on the job - not through a paper trail.
For owners building through design-build or general contracting, this is built into the project plan from day one.
READY TO BUILDWhat gets buried has to be right.
Underground utilities don't get a second chance. A pipe that's off, a line that's too small, a system that doesn't drain - these problems show up after the site is paved and the building is open. Fixing them means cutting into finished surfaces and shutting things down.
We check alignments and grades before we close a trench. The inspection record is clean when we're done.
What to Expect During Utility Installation
Pre-construction
We review the civil drawings, confirm utility sizes and alignments, and coordinate with the design team before any trench opens. Issues get caught on paper, not in the field.
Installation
Pipe goes into grade. Every system gets inspected before backfill. We don't close a trench until the work is confirmed.
Backfill and compaction
Trenches get backfilled in lifts and compacted to spec. This step matters. Poor compaction under a slab or pavement is a problem that shows up later and costs more to fix.
Closeout
As-builts get documented. The inspection record is complete. You know exactly what's in the ground and where.
USD 413 Animal Science Learning Center
Koehn Construction Services built a new Animal Science Learning Center for USD 413, giving FFA students hands-on space for animal science coursework and livestock projects. KCS self-performed the earthwork, site utilities, and structural steel on the project.
VIEW THIS PROJECT →Common questions about underground utility installation.
What does an underground utilities contractor install on a commercial site?
An underground utilities contractor installs the buried systems that make a building work: domestic water lines, sanitary sewer, storm drainage, and underground detention. This work happens after rough grading and before the foundation goes in. At KCS, the same team handles utilities and earthwork. That keeps the schedule tight and the handoffs short.
When do underground utilities get installed during construction?
After rough grading is done and before the foundation is poured. Storm and sanitary systems go in first — they're the deepest. Water service comes later. The order depends on pipe depths and the civil drawings. We build this into the site schedule from the start.
Does KCS do utility work as a subcontractor?
No, we do not work as a subcontractor. Our utility work 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 storm sewer and sanitary sewer?
Sanitary sewer carries waste from the building to the municipal system. Storm sewer carries rain and runoff away from the site. They are separate systems. They never connect. We install both.
What happens if underground utilities are installed wrong?
It's one of the most expensive mistakes to fix. A pipe that's off grade, a line that's too small, or a bad connection means cutting into finished surfaces to repair it. We check grades and alignments before we close every trench. The inspection record is clean when we leave.
Underground work that's built to stay buried.
Tell us about your project and we'll walk through the utility scope with you.