New Construction Plumbing
Done Right the First Time
From under-slab rough-in to final trim out, we handle every phase of your new build's plumbing system.
Serving builders and homeowners throughout the Piedmont region.
Complete Plumbing Installation for New Homes & Buildings
Building a new home is one of the biggest investments you'll make. The plumbing system behind your walls and under your foundation needs to be installed correctly from day one — because once drywall goes up and concrete is poured, mistakes become expensive problems.
At Old North Plumbing, we specialize in new construction plumbing for custom homes, spec homes, and additions throughout Middlesex, Raleigh, and the surrounding Piedmont region.
We work directly with builders, general contractors, and homeowners to deliver plumbing systems that pass inspection the first time and perform reliably for decades.
The Three Phases of New Construction Plumbing
New construction plumbing happens in distinct phases, each requiring coordination with other trades and careful attention to local building codes.
Under-Slab Rough-In
This is where it all begins. Before the concrete foundation is poured, we install the drain lines, water supply lines, and any other plumbing that will be encased in or beneath the slab. This phase requires precise measurements and careful planning — there's no going back once the concrete sets.
What We Install During Under-Slab:
Main sewer line connections
Drain lines for kitchens, bathrooms, and laundry
Water supply stub-ups
Bathtub and shower drains positioned to spec
Top Out (Rough-In)
Once the framing is complete, we return to run all the supply and drain lines through the walls, floors, and ceilings. This is the most labor-intensive phase and includes everything that will be hidden once drywall is installed. We coordinate with HVAC and electrical trades to ensure proper placement.
What We Install During Top Out:
Hot and cold water supply lines
Drain, waste, and vent (DWV) piping
Water heater connections
Gas lines for water heaters and appliances
Hose bib and outdoor connections
Stub-outs for all fixtures
This phase concludes with a rough-in inspection. We schedule and coordinate with local inspectors to keep your project on track.
Trim Out (Finish)
The final phase happens after painting is complete. This is when we install all the visible fixtures and make final connections. We take extra care during trim out to protect finished surfaces and leave the home clean.
What We Install During Trim Out:
Toilets, faucets, and showerheads
Garbage disposals
Dishwasher connections
Water heater installation and startup
Washing machine hookups
Final testing of all fixtures
Why Builders Choose Old North Plumbing
We understand that new construction runs on tight schedules. Delays cost money, and plumbing is often on the critical path.
We Show Up When We Say We Will
We coordinate our schedule with yours and communicate proactively if anything changes. Your timeline matters.
Licensed and Insured
Full liability and workers' comp coverage on every job. Complete peace of mind for you and your clients.
We Know the Local Codes
Johnston County, Wake County, Nash County — we're familiar with the inspection requirements in each jurisdiction and ensure our work passes the first time.
We Stand Behind Our Work
Our installations are covered by a workmanship warranty. We're not satisfied until the job is done right.
We Protect the Job Site
We clean up after ourselves and take care not to damage work completed by other trades. Professionalism throughout.
Easy Communication
One point of contact throughout your project. Call or text anytime with questions or schedule changes.
Materials & Fixtures We Work With
We install a wide range of plumbing systems and can work with your specifications or help you select materials that fit your budget and needs.
Supply Lines:PEX, CPVC, Copper
Drain/Waste/Vent:PVC, ABS, Cast Iron
Water Heaters:Tank (gas & electric), Tankless, Hybrid Heat Pump
We're happy to install builder-grade fixtures or high-end selections for custom homes. If you're building a spec home and need recommendations for cost-effective, reliable products, we can point you in the right direction.
Fixture Brands We Install
We work with all major fixture manufacturers and can accommodate your preferred brands or make recommendations.
Frequently Asked Questions
Still have questions?
Take a look at the FAQ or reach out anytime.
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Both. We work with general contractors on spec and custom homes, and we also work directly with homeowners who are acting as their own GC.
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Yes. Send us your plans and we can provide a detailed estimate before breaking ground. We can also work with your architect if plumbing layout changes are needed.
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We recommend reaching out 2–4 weeks before you need us on site for the under-slab phase. This gives us time to review plans and coordinate scheduling.
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You can reach us anytime via our contact page or email. We aim to respond quickly—usually within one business day.
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Yes. We schedule and attend all required plumbing inspections and coordinate with local code officials on your behalf. We ensure work passes the first time.
Serving Builders Throughout the Piedmont Region
We provide new construction plumbing services across multiple counties. If you're building in our area, give us a call.
Let's Talk About Your Project
Whether you're a builder planning multiple homes or a homeowner building your dream house, we'd like to earn your business. Contact us to discuss your project timeline, review plans, and get a detailed estimate.