How much does it cost to move kitchen plumbing in a NB renovation?

Moving kitchen plumbing during a New Brunswick renovation typically costs $1,500 to $4,000 for the rough-in work, though the total can climb higher depending on the distance of the move, the age of your existing plumbing, and what needs to be relocated. This is one of the most significant cost variables in a kitchen renovation, and it is important to understand what drives the price before committing to a new layout.

The simplest plumbing relocation is moving a sink a few feet along the same wall. The supply lines (hot and cold) and drain line can usually be extended without major structural work, and the existing vent stack may still serve the new location. This type of move typically falls in the $1,500 to $2,500 range in New Brunswick. Moving a sink to a completely different wall or to a kitchen island is more complex and expensive, usually $2,500 to $4,000 or more, because it requires running new supply lines through the floor or walls, extending or adding drain lines with proper slope, and potentially adding a new vent or air admittance valve.

Island Plumbing Is the Most Complex

Putting a sink in a kitchen island is one of the most requested layout changes in NB kitchen renovations, and it is also one of the most expensive plumbing moves. The supply and drain lines must run through the floor from below, which means accessing the basement or crawl space. In homes with concrete slab floors, which are less common in New Brunswick but do exist, the concrete must be cut and the lines run beneath it, adding $1,000 to $2,000 to the cost. Venting an island sink also requires creative solutions since you cannot run a traditional vent pipe straight up through the ceiling from an island. Most plumbers use an air admittance valve or a loop vent, both of which must meet NB building code requirements.

If your NB home was built before 1980, there is a strong chance the kitchen has galvanized steel pipes for the supply lines. These pipes corrode internally over decades, restricting water flow and potentially leaching lead into your drinking water. When you are already opening walls and floors to move plumbing, replacing galvanized sections with copper or PEX is one of the smartest investments you can make. The incremental cost to replace galvanized pipe while walls are open is $500 to $1,500 compared to $2,000 to $5,000 if you wait and have to open finished walls later.

Additional plumbing costs that often come up during kitchen renovations include adding a dishwasher connection at $200 to $500 if one does not already exist, installing a garburator line at $150 to $400, adding a pot filler faucet above the stove at $300 to $800 for the plumbing plus the cost of the faucet, and connecting a refrigerator water line for ice makers and dispensers at $150 to $400.

All plumbing changes require a permit in New Brunswick, whether you are in Moncton, Fredericton, Saint John, or a rural area covered by a Regional Service Commission. Permit fees run $75 to $200, and your plumber must pass a rough-in inspection before walls are closed. Budget the permit fees and any inspection wait times into your project timeline. During peak renovation season from May through October, inspection scheduling in some NB municipalities can add a week or more to your timeline.

Getting an accurate plumbing estimate early is essential for keeping your kitchen renovation on budget. A qualified kitchen renovator will assess your existing plumbing during the quoting phase and provide a clear breakdown of relocation costs. Get matched with local NB kitchen renovation contractors for free through New Brunswick Kitchens.

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Looking for experienced contractors? The New Brunswick Construction Network connects homeowners with qualified professionals:

• Thirty Four Renovations
• Gionetterenovations