Underground utility contractor · Commercial & industrial

The underground crew electrical contractors call first.

THS Site Services installs duct banks, light pole bases, and underground conduit for electrical contractors, developers, and general contractors on large commercial and industrial sites across the Carolinas.

Send us your drawings See our scope

THS crew guiding a prefabricated conduit cage with rigid stub-ups into a trench beside a tilt-wall building — Setting a prefab duct bank cageRigid stub-ups

Duct banksConcrete-encased, any configuration
Light pole basesDrilled & formed foundations
ConduitPVC, rigid, HDPE runs
Utility trenchingExcavation & backfill

Scope of work

What we install

We take the underground scope off the electrical contractor's plate on large commercial and industrial projects. Our crews dig it, set it, pour it, and backfill it so your wiremen can stay focused on pulling wire and building out the job.

Duct bank cages lowered into a trench by telehandler while the crew aligns them

Duct banks

Concrete-encased duct banks for primary and secondary power, telecom, and controls. We set spacers, tie down conduit, pour encasement, and mandrel every run.

Primary feeders
Utility service
Red-dyed caps
Mandrel testing

Crew setting a parking lot light pole onto a new concrete base

Light pole bases

Parking lot and site lighting foundations, drilled or formed, with anchor bolts set to template and conduit stubbed in ready for the pole crew.

Drilled piers
Anchor bolt templates
Rebar cages
Conduit stub-ups

Large PVC conduit bank with capped stub-ups and ground wire at an electrical room

Underground conduit

Direct-buried and encased conduit runs for power, communications, fire alarm, and site systems, including pull boxes, handholes, and pull strings in every run.

PVC & rigid
HDPE
Handholes
Pull boxes

Excavator opening a utility trench next to a trench roller ready for compaction

Trenching & backfill

Utility excavation, bedding, compacted backfill, and restoration, coordinated around other trades and existing underground.

Trenching
Compaction
Locates
Restoration

Electric power Communications Gas / oil / site Water Sewer & drain

From the field

Recent work

Photos from our crews on distribution centers, industrial parks, and tight downtown sites.

Crew setting PVC conduit in duct bank spacers in a long trench — Duct bank in spacers

Fresh concrete encasement poured around capped conduit stub-ups — Encasement pour at stub-ups

Concrete handhole with conduit entries in an open excavation — Handhole tie-in

Deep utility trench on a downtown site with an excavator and site supervisor — Downtown utility trench

Light pole being lowered onto its base in a new paved lot — Pole set on new base

Crew checking trench depth with a grade rod beside an excavator — Checking depth to grade

Trench roller compacting backfill in a long utility trench — Compacted backfill

Excavators trenching along a tilt-wall warehouse at dusk — Trenching along tilt-wall

How we work

From bid set to backfill

A straight path from your drawings to an inspected, as-built installation.

STEP 1

Takeoff & bid

Send your plans. We return a clear, itemized number with inclusions and exclusions spelled out.

STEP 2

Layout & locates

We call in locates, confirm elevations, and coordinate the trench with site and building trades.

STEP 3

Install & inspect

Crews set conduit, pour encasement, and stay on site for inspections so nothing gets buried twice.

STEP 4

As-builts

You get documented as-built locations and depths when we hand the scope over.

Who we work for

Built for the people who own the power scope

Underground is our core work. We price it, schedule it, and document it the way the people above us in the contract need it.

Primary client

Electrical contractors

We sub the underground portion of your package so your crews stay in the building. We follow your conduit schedule, coordinate with the serving utility, and hand you mandreled, pull-string-ready runs.

Owners

Developers

Site power, lighting, and telecom infrastructure installed to spec and documented with as-builts, so your tenants and future expansions know exactly what's in the ground.

Site & building

General contractors

One accountable crew for underground utilities that mobilizes when the pad is ready and works around grading, paving, and other trades.

Request a bid

Send us your next project

Tell us about the job and we'll follow up with questions or a number. Attach plans when we reply, or email them directly.

Phone: 843-408-1035
Email: bryan.guilford@thssite.com
Office: 3013 Wilkinson Blvd
Charlotte, NC 28208
Service area: Charlotte metro & the Carolinas