New Construction Plumbing in St. Peters, MO
For new home builds across St. Peters, MO, FGV Plumbing delivers expert plumbing system installations. We make sure your new construction meets all local codes and standards.
- PEX, Copper & PVC
- Experienced Plumbers
- Dependable Installations
- Code Compliant
Need New Construction Plumbing Done Right in St. Peters, MO?
Contact FGV Plumbing today for a detailed consultation and estimate on your new build.
Expert New Construction Plumbing Services in St. Peters, MO
When you are building a new property in St. Peters, MO, the plumbing rough-in and final installation are foundational to its long-term integrity. FGV Plumbing offers comprehensive new construction plumbing, ensuring every pipe, drain, and fixture is installed correctly and efficiently.
Our expertise includes:
- Under-slab drain, waste and vent systems with sleeved penetrations
- Gas piping, water heater venting and pressure-tested final connections
- Rough-in plumbing for all fixtures and appliances.

Additional Plumbing Maintenance Services in St. Peters, MO
Our maintenance and specialty plumbing services in St. Peters, MO catch small problems before they become emergencies.

Customers
Why Choose FGV Plumbing for New Construction Plumbing in St. Peters, MO?
We help prevent costly repairs down the line by focusing on quality materials and meticulous installation from day one. This careful approach saves you time and money.
- Quality Materials, We select durable piping, fittings, and fixtures chosen for local conditions, including water quality and soil movement.
- Schedule Discipline, We book underground, top-out and trim dates in advance and keep them.
- Code Compliance, All our new construction plumbing work closely follows Missouri and local St. Peters building codes, preventing inspection issues.
Citywide Coverage
Whether your project is a single guest house behind an existing home or a ground-up custom house on the edge of St. Peters, we have you covered. We know the permit counters and inspection schedules in the jurisdictions around town.
Experienced Team
Each plumber at FGV Plumbing working on new construction projects is licensed, insured, and highly skilled. Their expertise ensures that your plumbing system is installed correctly the first time, from foundation to roof vents.
Safety-First Approach
We take every precaution to provide a safe working environment and a compliant plumbing system for your new build. Our attention to detail in new construction plumbing protects your property and ensures long-term reliability.
Trusted Certified St. Peters Plumbing Services Professionals
At FGV Plumbing, we take pride in providing certified plumbing services throughout St. Peters, MO. Backed by leading industry credentials, our experienced plumbers combine technical skill with genuine customer care. Whether it is repair, installation, or maintenance, we follow strict safety and quality standards to deliver long-lasting results you can trust.
Call Us Now
PHCC Plumbing Contractor Recognition
Better Business Bureau (BBB) Accreditation
Angi Certified Pro
ISO 9001 Quality Management CertificationReliable New Construction Plumbing Services in St. Peters, MO
Water Heater and Recirculation Installation in St. Peters, MO
New homes commonly use tank water heaters in the garage, basement or utility room, or tankless units on an exterior wall. We size the heater to your bathroom count and install gas or electric connections, venting, an expansion tank and drain pan where required. Many owners add a dedicated recirculation line during rough-in, which is much less expensive than retrofitting later. Groundwater from limestone areas is especially mineral-heavy, which makes softeners and regular water heater flushing worthwhile. If treatment makes sense for your water, we recommend planning space for a softener or filter loop at the same time.

Residential New Construction Plumbing in St. Peters
FGV Plumbing specializes in complete plumbing system installations for new residential homes. This includes designing the layout, installing all water supply lines, drain lines, and vent piping. We work closely with homeowners and builders to ensure the plumbing system is matched to the home's specifications and future needs, using materials like PEX and copper for supply lines and PVC for drains, chosen for durability in Missouri climate.
Rough-In and Top-Out Plumbing in St. Peters, MO
Once framing is up, we run supply and vent lines through the walls and attic and set every stub-out for sinks, tubs, showers and appliances. We usually install PEX-A with a central manifold so each fixture gets its own line and shutoff. Shower valves are set at the heights you choose, and tub sets are installed and protected before the drywall is hung. A full pressure test is held for inspection so nothing hidden in the walls is ever a question.
Fixture Installation and Finishing in St. Peters, MO
Once the rough-in is complete and walls are up, FGV Plumbing handles the final installation of all plumbing fixtures. This includes sinks, toilets, showers, bathtubs, dishwashers, and washing machines. We ensure everything is properly aligned, sealed, and fully functional, providing a polished finish to your new home's plumbing system.
Final Trim and Fixture Setting in St. Peters
At trim we install toilets, faucets, garbage disposals, dishwashers, ice maker boxes and laundry connections. We work with fixtures from Moen, Delta, Kohler, American Standard and the other brands builders commonly specify, or with owner-supplied fixtures. Every fixture is checked for flow, drainage and leaks, and angle stops are set straight and tight. We finish by running every fixture at once to verify the system drains and vents properly under load.
Underground and Under-Slab Plumbing in St. Peters
The underground phase sets the drain, waste and vent layout that every fixture in the house will rely on. We trench, bed and slope PVC or ABS drain lines at a minimum quarter inch per foot and protect every pipe that passes through the slab or foundation with sleeves. Basements are common in many areas, so sump pumps and drain tile are an important part of keeping homes dry. We compact bedding carefully and avoid rigid points that could stress the pipe as the ground moves. Each line is water tested and left visible for the inspector before your concrete contractor pours.
Plumbing Rough-In Services in St. Peters
The rough-in phase is the backbone of your new construction plumbing system. This involves installing all underground and in-wall piping before concrete is poured and walls are closed. We carefully lay out and connect all water supply, drain, and vent pipes according to architectural plans and local St. Peters codes. Using durable PEX or copper piping, we ensure secure, leak-free connections that will serve your property for decades.

Rough-In Plumbing Services in St. Peters
The rough-in phase is where the core plumbing system is installed within the walls, floors, and ceilings before drywall. This includes all supply lines, drain lines, and vent piping for every fixture. Our plumbers meticulously plan and execute the rough-in, using high-quality fittings and ensuring all pipes are properly secured and leak-tested before inspection.
New Construction Plumbing Near Me in St. Peters, MO
If you're searching for dependable new construction plumbing near me in St. Peters, MO, FGV Plumbing is your trusted local expert. Our team is ready to mobilize quickly for your project, providing timely and efficient service right in your neighborhood.
When you are searching for new construction plumbing near me in St. Peters, look no further than FGV Plumbing. Our local team is ready to serve all areas, providing prompt and reliable service for your building projects. We take pride in being the go-to plumbing partner for builders and developers across the area.
FGV Plumbing at a Glance
- Licensed and insured plumbers serving St. Peters, MO
- Same-day appointments and 24/7 emergency response
- Upfront, flat-rate pricing before work begins
- 4.9-star rated by 307+ Missouri customers
St. Peters Map
St. Peters Information
- Population
- 59,413
- Area codes
- 636/314/573
- Service area
- St. Peters and communities within 40 miles
- Nearby
- St. Charles, O'Fallon, Chesterfield, Ballwin
Pipe selection, bedding and layout decisions made before the slab is poured or the floor is framed determine the life of the whole plumbing system in a new St. Peters, MO home. Groundwater from limestone areas is especially mineral-heavy, which makes softeners and regular water heater flushing worthwhile.
Expert Services
Trust our professionals for reliable FGV Plumbing solutions in St. Peters, MO.
Our Specialized Plumbing Services in St. Peters, MO
At FGV Plumbing, we provide a complete range of plumbing services across St. Peters, MO. From leak detection to full system installations, our team ensures fast, precise, and affordable service for both residential and commercial properties. Explore our core services below:
Here Is How Our New Construction Plumbing Process Works in St. Peters, MO
Our process follows the same phases your inspector does, so every step is ready before you need it.
Request a Quote
Start by contacting FGV Plumbing at (816) 330-2338 to discuss your new construction plumbing project. We'll gather details about your blueprints and project scope to provide a comprehensive estimate.
Plan & Design
Our experts review your building plans and collaborate with your construction team. We optimize plumbing layouts for efficiency, code compliance, and future serviceability.
Rough-In Installation
We install all underground and in-wall piping, including water supply, drain, and vent lines. This critical phase is performed with meticulous attention to detail before foundations and walls are closed.
Frequently Asked Questions About New Construction Plumbing in St. Peters
Most new single-family homes in the St. Peters area cost between $12,000 and $25,000 to plumb, with larger custom homes running $30,000 or more. Fixture count, pipe material, water heater type and extras like recirculation or outdoor kitchens drive the final price. We provide an itemized bid from your plans.
In many homes, yes. Groundwater from limestone areas is especially hard, which makes softeners and regular water heater flushing worthwhile. A softener loop costs a few hundred dollars during construction and much more to retrofit later. The loop lets you add a softener or filtration system any time without opening up walls.
We install a wide range of reputable plumbing fixture brands based on your preferences and budget, including Kohler, Moen, Delta, American Standard, and Toto. We can also handle specific requests if you have a particular brand or style in mind, ensuring quality and availability for your new home.
Yes, we can handle only the underground, only rough-in and top-out, or only trim. If another plumber started the job, we'll inspect and test their work before taking it over. That protects you and keeps the inspection record clean.
For new construction, we typically use PEX, or cross-linked polyethylene, for water supply lines due to its flexibility, durability, and resistance to corrosion. For drain, waste, and vent systems, we primarily use PVC piping because it's strong, lightweight, and cost-effective.
Our workmanship is warrantied, and the warranty terms are listed in your contract. Fixtures, water heaters and PEX systems also carry their own manufacturer warranties, often 10 years or more for PEX and fittings from brands like Uponor. We hand over the paperwork at final.
Several inspections are required during new construction plumbing. These typically include an underground or rough-in inspection before walls are closed, a top-out inspection if applicable, and a final inspection after all fixtures are installed and the system is operational. We schedule and manage all inspections to ensure compliance.
For new construction plumbing, we mainly use PEX piping for water supply lines due to its flexibility, durability, and resistance to scale build-up. For drain, waste, and vent systems, we use PVC pipes, which are resistant to corrosion and long-lasting.
What People Are Saying About Our Plumbing Experts?

Mark T.
When our office needed drain cleaning, FGV Plumbing provided quick, reliable service. The plumber arrived on time and made sure every drain flowed perfectly before leaving. Very satisfied.
Drain Cleaning · O'Fallon, MO
Emily R.
I called FGV Plumbing for plumbing repair, and the technician was fast, polite, and thorough. They explained the problem clearly and fixed it the same day. I will definitely hire them again. Highly recommended!
Plumbing Repair · St. Charles, MO
Patricia H.
We had a slab leak that two other companies could not find. FGV Plumbing located it in under an hour, explained our options, and the price matched the quote to the dollar.
Slab Leak Repair · Wentzville, MO
Laura S.
I scheduled a water heater replacement, and the team made the process smooth and affordable. The new unit works perfectly, and they cleaned up after completing the job.
Water Heater Replacement · Chesterfield, MO
Sofia M.
Two new toilets installed in one visit, no mess left behind, and the tech even adjusted a faucet he noticed was dripping. Fair pricing and really friendly.
Toilet Installation · Chesterfield, MO
James P.
Our commercial plumbing system had a leak under the sink, and FGV Plumbing handled it professionally. The plumbers arrived quickly and restored everything without disruption to our customers.
Commercial Plumbing · O'Fallon, MO













