New Construction Plumbing in St. Louis, MO

Trusted New Construction Plumbing Services in St. Louis, MO

Residential New Construction Plumbing in St. Louis

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 tailored 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.

Plumbing Rough-In Services in St. Louis

The rough-in phase is the foundation 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. Louis codes. Using durable PEX or copper piping, we ensure secure, leak-free connections that will serve your property for decades.

Fixture Installation and Finishing in St. Louis, 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.

Underground and Under-Slab Plumbing in St. Louis

The underground phase sets the drain, waste and vent layout that every fixture in the house will depend 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. Expansive clay soils are common in Missouri, and they swell and shrink with moisture, putting stress on foundations and buried lines. We compact bedding carefully and avoid rigid points that could stress the pipe as the ground moves. Each line is water tested and left exposed for the inspector before your concrete contractor pours.

Guest House, ADU and Addition Plumbing in St. Louis, MO

Guest houses and additions need plumbing that ties into the existing house without overloading old drain lines. We locate the existing sewer, check its condition with a camera and verify there is enough fall to the new building. Supply lines can be branched from the main house or run as a separate service, depending on distance and pressure. We also handle the trenching between structures and restore the yard when we are done.

New Construction Plumbing Cost Planning in St. Louis, MO

Plumbing for a typical new single-family home usually runs about 4 to 8 percent of total build cost, depending on fixture count and finish level. A modest three-bedroom home often lands between $12,000 and $25,000, while custom homes with multiple suites and outdoor kitchens run higher. Choices like a manifold PEX system, a recirculation loop and fixture grade move the number most. We break the bid out by phase so you can see exactly where the money goes.

Rough-In and Top-Out Plumbing in St. Louis, 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 typically 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 in doubt.

Water Heater and Recirculation Installation in St. Louis, 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 far cheaper than retrofitting later. Groundwater from limestone areas is especially hard, 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.