How much do contractors charge for bathroom plumbing rough in in New Brunswick?

Bathroom plumbing rough-in in New Brunswick typically runs $1,500–$4,500+, depending on the complexity of the job and whether you're working in a new build or an existing home.

The spread is wide because "rough-in" covers a lot of ground — supply lines (hot and cold), drain/waste/vent (DWV) piping, and stub-outs for your toilet, sink, tub or shower. In a straightforward new construction scenario where the framing is open and the plumber has easy access, you're looking at the lower end of that range. Retrofitting a bathroom into a finished basement or adding a second-floor bath to an older home in Moncton or Saint John? Costs climb quickly once you're cutting into concrete, opening walls, or working around existing drain stacks.

Here's a realistic breakdown for the NB market:

• Basic rough-in (new build, open framing, standard 3-piece): $1,500–$2,500
• Mid-range (existing home, some wall opening required): $2,500–$3,500
• Complex (basement concrete cutting, long drain runs, older home with cast iron or galvanized): $3,500–$6,000+

Northern NB communities like Bathurst, Campbellton, and Edmundston can see slightly higher quotes due to tighter labour availability — skilled plumbers are in demand across the province right now.

A critical point most homeowners miss: in New Brunswick, all plumbing work must be performed by a licensed plumber, and a plumbing permit is required through the NB Department of Justice and Public Safety — Technical Inspection Services (TIS). This isn't optional, and it isn't the same as a building permit. TIS handles plumbing licensing and inspections province-wide. Reach them at 1-888-659-3222 or email TISFTN@gnb.ca. Your plumber should be pulling this permit — if a contractor says you don't need one, walk away.

The permit triggers a TIS inspection once rough-in is complete and before walls are closed. This protects you — if there's ever a leak or a moisture claim, unpermitted work can void your home insurance and create serious liability headaches.

What affects your quote most is the age of your home. Post-war bungalows and 1970s–1990s homes (very common in Riverview, Quispamsis, New Maryland, and suburban Fredericton) often have galvanized steel drain lines that are corroded and need replacing while the walls are open anyway. Budget an extra $500–$1,500 if your home is pre-1990 and you haven't had the drains inspected recently.

Get at least three quotes from licensed plumbers and ask each one specifically what's included — some quotes cover labour only, while others bundle materials. Also confirm they're registered with WorkSafeNB before work begins (verify at worksafenb.ca or call 1-800-999-9775) — this protects you if a worker is injured on your property.

You can find licensed plumbing contractors serving your area through the New Brunswick Construction Network directory.