New Construction Plumbing in Racine, WI
On a new build the plumber's expensive mistakes all happen before anyone can see them. Once the slab is poured and the walls are closed, the position of the stack, the size of the water service, and the route the flue takes are effectively permanent. Everything after that is trim.
We take on new residential and light-commercial work across Racine, Mt Pleasant, Sturtevant, and Caledonia — underground, rough-in, and finish — working to the Wisconsin plumbing code and to the inspection schedule your build actually has to pass.
Three Decisions That Cannot Be Undone Later
Almost every regret we hear about on a finished house traces back to one of these three, and all three are settled on paper before a trench is dug.
Where the stack lands
The main soil stack and the building drain beneath it fix the geometry of every bathroom in the house. Stacking wet rooms above one another, or backing them onto a shared wall, keeps runs short and vents simple. Scattering them across a floor plate is the difference between a clean rough-in and a ceiling full of compromises.
The size of the water service
The pipe from the street sets the ceiling on everything the house will ever be able to do at once. Upsizing it after the drive is poured means opening the drive. It costs very little to put in a generous service on day one, and a great deal to wish you had.
The mechanical room and its flue path
Where the water heater sits decides the length of every hot run in the building and whether the venting can be done cleanly. A heater tucked into a far corner produces long waits at the tap for the life of the house, and a venting route that fights the framing for the whole build.
The Inspection Sequence Sets the Schedule
Plumbing on a new build is not one job. It is three, separated by inspections, and each one has to be signed off before another trade is allowed to bury it.
| Stage | What is installed | What gate it has to clear |
|---|---|---|
| Underground | Building drain, branches under the slab, sleeves through footings, and the water service entry. | Inspected and tested while still open. Nothing is backfilled or poured over until it has passed. |
| Rough-in | Waste and vent piping through the framing, supply distribution, tub and shower valves, and any in-wall carriers. | Inspected and pressure-tested before insulation and drywall. This is the stage where a missed vent is cheap and after which it is not. |
| Finish | Fixtures set, trim fitted, appliances connected, water heater installed and vented, everything commissioned. | Final inspection with the system live and every fixture demonstrated. |
The practical consequence for a builder is that plumbing is on the critical path three separate times. A rough-in that is not ready when the inspector is available does not delay the plumbing; it delays insulation, drywall, and everything behind them.
How a Rough-In Is Proved
Testing is not a formality. It is the only opportunity to find a defect while it is still reachable.
- Drain, waste, and vent are tested under a head of water — the system is capped and filled so every joint below the fill line is under real load. Air testing with a gauge is the alternative in freezing conditions.
- Supply is put under pressure and held. A gauge that does not move over the test period is what proves the joints, and it is watched rather than glanced at.
- Every test happens before anything is covered. The value is entirely in the timing; a leak found at rough-in is a fitting, and the same leak found after paint is a room.
- Fixture protection goes on early. Tub and shower bases arrive before the walls close and then live through the whole build. Covering them properly at the start is cheaper than replacing one at the end.
Who You Are Contracting With
- Building in this county since
- 1995
- Wisconsin Master Plumber license
- 225457
- Independent rating
- 4.8 from 51 Google reviews
- Office and yard
- 6008 Mt Vernon Way, Mt Pleasant
A small firm on a build is a different experience
I highly recommend anyone looking for a plumber to consider contacting PM plumbing. I guarantee you will be highly satisfied. — Chris Rinehart, Google review
New construction rewards continuity. The person who set the underground should be the person who runs the rough-in, because they remember why a line went where it did and what it was left short for.
This is a two Master Plumber operation, working under the state license above since 1995. On a house, that means the same pair from trench to trim, and a number that reaches the owner rather than a dispatcher. Our yard is in Mt Pleasant, so a site anywhere in Racine County is a short run rather than a scheduling problem.
Sizing Is Arithmetic, Not Preference
Wisconsin's plumbing code, chapter SPS 382, sets out how the numbers are arrived at. It is worth knowing what those calculations depend on, because they are driven by decisions the owner makes.
The drainage side
Every fixture contributes a load value, and those values added together determine the diameter and the fall of the pipe carrying them. Adding a bathroom late in design does not simply add a branch — it can push the drain serving that whole side of the building up a size.
The supply side
Service and distribution sizing balances the demand of the fixtures against the pressure available at the street and the losses along the way. Undersizing produces a house where two showers cannot run together; oversizing wastes water sitting in pipe waiting to be used.
Venting
Vents are sized and positioned relative to the fixtures they protect, and the distance between a trap and its vent is limited. Layout changes made after rough-in frequently break these limits, which is why a moved fixture is rarely as simple as it looks.
Hot water
Peak demand rather than household size decides the heater. Two bathrooms used at the same hour and a large soaking tub set the requirement, and the distance from heater to the furthest fixture decides whether a recirculation loop is worth the effort.
Why the Bathroom Layout Comes Before the Tile Choice
Plumbing layout has a grammar. Fixtures can share a vent in defined arrangements, and those arrangements are what let a bathroom be piped efficiently instead of with a separate vent stack for every trap.
That is why we would rather see a floor plan early than be handed one after framing. Moving a toilet eighteen inches on paper costs nothing. Moving it after the underground is in means breaking concrete, and moving it after rough-in can mean re-venting the whole group.
It is also where a plumber earns their keep on a custom build: suggesting the wall a fixture should sit on, which two rooms should share a chase, and where the future basement bathroom's stub-outs belong so that finishing the lower level later is a weekend rather than an excavation.
What We Need From the Other Trades, and When
Before underground: final slab layout and elevations
Fixture positions, the finished floor level, and any depressed areas. The building drain is set to a fall we cannot alter afterwards, so it is laid to real numbers rather than assumed ones.
Before rough-in: framing complete and stable
Walls up, blocking in, and any structural members final. Notching and boring have limits, and a wall that moves after piping is in is a rework nobody has budgeted.
Alongside rough-in: mechanical and electrical coordination
Ductwork and waste piping want the same joist bays, and both want them for good reasons. Sorting the conflicts on site during the same week is far cheaper than discovering them at inspection.
Before trim: floors, tile, and cabinetry set
Fixture heights depend on finished surfaces. A closet flange set to a bare subfloor and then tiled over is the single most common source of a leaking toilet in a brand-new house.
At closeout: appliances on site
Dishwasher, laundry, and any specified filtration in the building so connections are made and tested during the same visit rather than in a return trip after handover.
Trim-Out and Handover
The finish stage is where the owner finally sees the work, and a few habits make the difference between a clean handover and a snagging list.
- Fixtures set on finished surfaces, leveled, and sealed, with valve escutcheons sitting flat against the tile rather than bridging a gap.
- Every isolating valve labeled and reachable. The owner should be able to shut off any fixture, and the whole house, without a torch and a guess.
- The heater commissioned properly — expansion control fitted, temperature set, discharge piping run correctly, and the flue confirmed.
- Every fixture run under load, drains checked for flow rather than just absence of leaks, and traps primed so the house does not smell in its first fortnight.
- A walk-round at the end, showing the owner the main shutoff, the heater controls, and where the cleanouts are. That last one saves them money for as long as they live there.
The Office Behind the Build Schedule
Programs and rough-in dates are set at 6008 Mt Vernon Way in Mt Pleasant. The pipework goes in on your plot, so builders use this address for correspondence.
See what builders say on Google They describe how rough-in dates were held.