Renovating? Adding a bathroom? We rough in supply, drain, and vent lines for remodels and new construction across Hempstead, with permits pulled and inspections handled.
Remodels & new constructionCode-correct rough-insPermits & inspection handledCoordinated with tile & trim
Bathroom plumbing is the part of a renovation that has to be right before tile, drywall, or trim ever gets installed. Get the rough-in wrong and you find out months later when the shower drains slowly, the tub gurgles when the laundry runs, or the new vanity sits a quarter inch off where the supplies came up. We handle the plumbing side of bathroom remodels, additions, and new construction across Hempstead so the rest of the project lands clean.
Most of our bathroom plumbing work is full remodels and additions. We rough in supply, drain, and vent lines for relocated vanities, freestanding tubs, walk-in showers, and bidet installations. We coordinate with your tile setter and contractor so rough-ins land in the right spots the first time, pressure test before walls close, and pull the Town of Hempstead permit when one is required.
For older Hempstead homes with cast-iron drain stacks, galvanized supply lines, or undersized branch lines feeding a single bathroom, we also quote upgrades during the remodel window. Replacing a 60 year old branch line is much cheaper when the wall is already open.
Project Types
Three Kinds of Bathroom Plumbing Calls
Most bathroom plumbing work in Hempstead falls into one of these three buckets. Knowing which one your project is helps us scope it accurately on the call.
Full Remodel
A full bathroom remodel where most or all fixtures are getting replaced. We tear out the old plumbing, run new supply and drain lines to the new fixture locations, set tub and shower valves, and pressure test before the tile guys come in. Coordination with the contractor and tile setter is the difference between a clean job and one that leaks.
New Bathroom Addition
Adding a bathroom where one did not exist before. Basement powder rooms, attic bathrooms over the garage, or master suite additions on a Hempstead colonial. Includes drain stack tie-ins, supply line extensions, vent piping, and a permit with the Town. Sometimes a sewer ejector pump is needed for below-grade installs.
Single-Fixture Swap
Replacing a single tub, shower, or vanity without changing the room layout. The supply and drain stay roughly where they are; we update the connections, set the new fixture, and verify everything pressure tests clean before walls close. Smaller scope, faster turnaround, but still permit-pulled when the work requires it.
Not sure which one yours is? Send a few photos of the existing bathroom and tell us what you want changed; we can scope it on a call before any in-home visit.
Project Scopes
Remodel or Addition, Sized to Your Project
The biggest cost driver is whether the existing drain stack and supply lines can stay or have to move. We walk through both options on the consult and quote what each one actually involves.
RemodelExisting Footprint
Same room, same fixture locations. Tub stays where the tub is, vanity stays where the vanity is, shower stays where the shower is. We rough in updated supply and drain to match new fixtures, swap valves, and tie back into existing stack and supply. Lower-cost path; most one-bath remodels in Hempstead finish in three to five days of plumbing time spread across the project.
AdditionNew Layout / New Room
Drain stack work, new supply runs. Moving fixtures across the room, adding a second bathroom, or finishing a basement bath. Includes tying into the main DWV stack, running new supply lines through joists or walls, possibly installing a sewer ejector pump for below-grade installs, and a Nassau County permit with final inspection. Bigger scope, larger budget, longer lead time.
For full remodels and additions we get involved early in the design phase. The number of days between rough-in and tile-set, the location of supply stub-outs, and the height of the tub valve all matter to your tile guy and your trim guy. Calling us before drywall comes down saves rework once the project starts moving.
If you are buying a Hempstead home with the intent to remodel, we also do pre-purchase plumbing walkthroughs. Knowing whether the existing drain stack will support a second bath before you close on the house can shape the offer.
What's Included
A Real Quote, Not Just Labor
Written estimate after walkthrough
We come out, look at the existing plumbing and the planned layout, and write you a flat-rate quote for the rough-in, fixture set, and any drain or supply upgrades. The number you see is the number you pay unless you change scope mid-project.
Nassau County permit and inspection
Bathroom plumbing work in Hempstead requires a permit when supply or drain lines are being added, relocated, or replaced. We pull the permit, schedule the rough-in inspection before walls close, and stay on the hook through final sign-off. You do not chase paperwork.
Coordinated with your contractor
We work with your general contractor and tile setter on timing, valve heights, and stub-out locations. The plumbing rough-in lands in the right spots so the tile guy is not centering tile on a drain that is half an inch off, and the trim guy is not cutting holes in a finished wall.
Workmanship warranty in writing
Every bathroom plumbing job we install carries a written workmanship warranty on the rough-in and connections. Manufacturer warranties on tubs, valves, and other fixtures are passed through; we help you register them on day one.
How It Works
Four Steps from Drawing to Final Inspection
Most bathroom remodels and additions move through these four stages. Knowing the timeline helps you plan around the contractor and the tile schedule.
1
Walkthrough & written quote
We come to the home, look at the existing plumbing, the planned layout, and the access. You get a flat-rate written quote covering the rough-in, fixture install, any pipe upgrades, the permit, and the timeline. Free in-home consultation, no trip charge for a project quote.
2
Permit & demo coordination
Once the quote is approved, we pull the Nassau County permit and coordinate with your contractor on demo timing. The plumbing rough-in usually starts after framing changes are done and before tile or drywall goes back up.
3
Rough-in & pressure test
Supply, drain, and vent lines are run to the new fixture locations. Tub and shower valves are set to spec. Everything is pressure tested before walls close, and the inspector signs the rough-in inspection so the contractor can move forward.
4
Fixture set & final
After tile and drywall are done, we come back to set the tub, shower, and vanity, install valve trim, and verify operation. The final inspection happens once the room is finished, and you get a copy of the closed permit for your records.
What We Install
Every Common Bathroom Install in Hempstead
From a single tub swap to a full master suite addition, here is the work we run most often.
Bathtub Installation
Standard alcove tubs, freestanding soakers, and clawfoot units. We set the tub level, plumb the drain and overflow, install the valve, and pressure test before tile work begins. Cast iron, steel, and acrylic tubs all welcome.
Walk-In Shower
Tile-ready shower pan installation, drain rough-in (linear or center), shower valve set to height, and supply for body sprays or rain heads. We coordinate with the tile setter on slope and waterproofing details.
Vanity Plumbing
Single and double-sink vanities, wall-hung and floor-standing. Supply stub-outs sized to vanity layout, drain rough-in centered for the trap, and pop-up assembly install. Small things that cost the contractor an afternoon if they are not right.
Bidet Installation
Standalone bidet fixtures and bidet seat retrofits. Hot and cold supply, dedicated drain, and electrical coordination on smart units. Common upgrade on Hempstead remodels in the last few years.
Drain Rough-In
2-inch shower and tub drains, 1.5-inch sink drains, and proper venting on every fixture. We size the lines to current Hempstead code, set the heights to match the planned finish floor, and tie back into the existing stack.
Supply Line Rough-In
Half-inch hot and cold supply runs in PEX or copper, sized for the simultaneous demand of the new bathroom. Stub-outs land at the right height and centerline for vanity, tub, shower, and bidet. Pressure tested before walls close.
Shower Valve Set
Pressure-balanced and thermostatic shower valves set to manufacturer-spec height and rough-in depth. Critical to get right before tile goes up; set even an eighth of an inch off and the trim plate will not sit flush.
Drain Stack Tie-In
For additions and master-suite expansions, the new bathroom has to tie into the existing main stack with proper venting. We open access, install the wye, run the new branch, and pressure test the joint before closing back up.
Sewer Ejector Pump
Below-grade bathroom additions (basement powder rooms or basement full baths) need a sewer ejector pump to lift waste up to the main drain. We size the pit, install the pump, run the discharge, and tie into a check valve and a vent.
Bathroom Project on the Calendar?
Get the plumber in early. Call us before drywall comes down so the rough-in lands right the first time.
Common questions homeowners and contractors ask before scheduling a bathroom project.
A same-footprint remodel where fixtures stay in roughly the same locations runs $3,500 to $7,500 for the plumbing portion, depending on fixture count and pipe upgrades. A full new bathroom addition (including drain stack tie-in, supply runs, and venting) typically runs $8,000 to $18,000. Permit and inspection are included; the fixtures themselves are separate.
Most one-bath remodels need three to five days of plumbing time spread across the project: one to two days for rough-in, one for the inspection visit, and one or two days for fixture set after tile and drywall are done. New bathroom additions add another day or two for stack tie-in. We coordinate the schedule with your contractor so plumbing is not what holds the project up.
Yes for any work that adds, relocates, or replaces supply or drain lines, which is most remodels and all additions. Nassau County requires a plumbing permit and a final inspection. We pull the permit, schedule the rough-in inspection before walls close, and stay on the hook through final sign-off. Skipping the permit will haunt the home sale later, so it is not optional.
Yes. We are subbed in on remodels and additions every week and we know how to move at a contractor's pace. We coordinate timing on demo, rough-in, inspection, and trim with the GC and the tile setter. If you do not have a GC and just need the plumbing portion done, we handle our scope only and stay out of the rest.
Almost always, yes. The question is whether the basement is below the level of the main sewer line. If it is, we install a sewer ejector pump and pit, which lifts waste up to the main drain. If the slab can be opened to tie directly into the main, that is the cleaner option. We figure out which one your house needs on the consult.
If the existing supply is galvanized or the drain is heavily corroded cast iron, we usually recommend upgrading at least the branch lines feeding the renovated bathroom. The wall is already open, so the cost to swap them out is much lower than doing it as a separate job later. We quote both options on the walkthrough so you can decide.
Related Services
Other Services Often Tied to Bathroom Projects
Most bathroom remodels touch one or two of these other services along the way.
Kitchen Plumbing
Renovating both rooms? Kitchen rough-ins for islands, pot fillers, and dishwashers, scoped on the same walkthrough.
