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Dunn Infrastructure Group utility work for developers
Developers

Lots ready when the pro forma says they should be.

Water, sewer, storm, and site utility construction for residential subdivisions, mixed-use, multifamily, and light industrial across coastal Georgia and the Lowcountry. We pull our own permits, coordinate locates, and stay accountable for everything underground until the local authority signs off.

01The problem

The fastest path from grading to lot acceptance.

Subdivisions and commercial site packages don't fail because the dirt is hard. They fail in the seams: a locate that wasn't called in early enough, an as-built that doesn't match what's actually in the ground, a permit revision that nobody flagged at the pre-con, a sub who pulled crews to a higher-priority job the week you needed them.

We've spent years closing those seams in coastal Georgia and the Lowcountry. We know the permitting offices — Chatham, Bryan, Effingham, Beaufort, Jasper. We know which inspectors expect what. We know the soil — sandy loam with clay layers, high water table, the kinds of conditions that turn a routine sewer install into a dewatering exercise. And we know what your pro forma can't absorb: a month of delay.

02Scope

The full underground scope, under one contract.

  1. 01

    Water main installation

    Ductile iron and PVC, sized to local authority specs, pressure tested and accepted.

  2. 02

    Sanitary sewer construction

    Mainlines, manholes, lateral connections, force mains. CCTV-tested before acceptance.

  3. 03

    Storm drainage and retention

    Catch basins, storm pipe, retention/detention ponds, CulTec underground systems where they preserve usable land.

  4. 04

    Lift station installation

    When terrain demands it. Including control panels, backup power, and remote monitoring.

  5. 05

    Erosion and sediment control coordination

    We work alongside your E&S subs to keep BMPs in compliance during construction.

  6. 06

    Permit coordination and locate management

    We pull our own permits, coordinate 811 locates, and manage the inspection schedule.

03Process

How we work with developers

  1. 1

    Civil plan review

    You send us civil drawings. We review them for constructability, flag anything that'll cause a problem in the field, and quote against the actual plan — not against a generic scope.

  2. 2

    Pre-construction

    We attend pre-con with your civil engineer and the authority having jurisdiction. Permit timing, inspection sequence, locate calls, and submittals get sorted before mobilization.

  3. 3

    Construction

    Crews show up on the schedule you signed off on. Schedule changes come from us in writing, with the reason, before they affect your lot delivery date.

  4. 4

    Testing and acceptance

    Pressure testing, CCTV, mandrel — whatever the local authority requires for acceptance. We coordinate the inspections directly.

  5. 5

    As-builts and turnover

    You get as-built drawings ready for the local authority's GIS, plus a clean punch list closeout. Lots are ready when the pro forma said they would be.

04Why Dunn

Why developers choose us

01

Local permitting depth

We've pulled permits in every coastal Georgia and Lowcountry jurisdiction we serve. We know each authority's preferences, inspection cadence, and submittal requirements.

02

One contractor for everything underground

Water, sewer, storm, lift station, locates, permits. One contract, one schedule, one accountable party.

03

Civil engineers vouch for us

We work closely with the civil firms that design subdivisions in this region. Ask yours.

  • Licensed in Georgia and South Carolina
  • NASSCO-certified for pipeline assessment
  • SC DHEC experience
  • GA EPD and local stormwater regulation experience
  • Bonded
05FAQ

Frequently asked questions

Do you pull permits, or does our civil engineer do that?

We pull our own utility permits in every jurisdiction we work in. We coordinate directly with your civil engineer's submittals so we're not duplicating effort, but you don't need to chase utility permits — that's our scope.

How quickly can you mobilize?

Depends on size and current backlog, but for most projects we can mobilize within 2–6 weeks of contract execution. Emergency or smaller-scope work can move faster.

We're working with a GC who'll sub the utilities. Can you work under them?

Yes — about half our project work is direct to developer, the other half is under a GC. We're comfortable with either structure.

We had a bad experience with a previous site contractor. What's different about working with you?

Schedule changes go in writing before they affect your delivery date. Pricing is locked to a written scope, not a one-line bid that turns into change order disputes. And our project managers stay accessible — you'll have a phone number that gets answered, not routed.

Do you work in Pooler, Richmond Hill, Bluffton, or Hardeeville?

Yes — see our service areas. If you're in coastal Georgia or the Lowcountry, we likely already have permitting experience in your jurisdiction.

Do you handle industrial and data center site packages, or just residential and commercial?

Both. Alongside subdivision and commercial site work we've self-performed the underground package on a data center in the Savannah market, storm drainage for an intermodal container yard, and site utilities on industrial warehouse projects. Industrial sites bring larger fire service mains, bigger detention volumes, and tighter testing requirements, and we scope them separately — see our data center page for how that package is broken out.

Send us the civil set.

We'll review the plans, flag anything that's going to cause a field problem, and quote a scope priced against the actual drawings. No generic bids.

Last updated: September 24, 2026