Whether you are building a new home in Juniper Ridge or renovating a 1970s rancher in Brocklehurst, plumbing work is one of the most consequential parts of the project. Get it right and the system runs silently for decades. Get it wrong and you are cutting into drywall every few years. New construction and renovation plumbing are fundamentally different jobs, and the approach, costs, and risks vary significantly.
New construction plumbing starts with a clean slate. The plumber works from architectural plans and installs the entire system before walls are closed. Water supply lines, drainage stacks, venting, and fixture rough-ins are all laid out according to the BC Plumbing Code and inspected at multiple stages. In new builds across Sahali and Juniper Ridge, we typically use PEX-A for supply lines and ABS for drainage. Both materials are code-approved, cost-effective, and install faster than copper or cast iron.
The advantage of new construction is control. The plumber chooses the pipe routes, avoids structural conflicts, and sizes the system for the exact fixture count. Water pressure can be optimized from the start. Venting is designed properly so every fixture drains correctly. And modern materials like PEX-A resist freeze damage better than rigid pipe, which matters in Kamloops winters.
Renovation plumbing is the opposite. You are working inside existing walls, often with limited access, outdated materials, and surprises behind drywall. In North Shore and Brocklehurst homes built before 1990, we routinely find galvanized supply lines, cast iron drains, inadequate venting, and Poly-B in homes from the late 1980s. None of these can simply be extended — they need replacement.
The first step in any renovation is a thorough plumbing inspection. Before your contractor opens walls, a licensed plumber maps the existing system, identifies materials, tests pressure, and cameras the drain lines. This prevents the nightmare scenario where you budget for a kitchen reno and discover your entire house needs repiping.
Permits are required for both new construction and major renovations. In Kamloops, plumbing permits are issued by the City of Kamloops Building Division and must be pulled by a licensed plumber. Work without a permit voids insurance, invalidates warranties, and creates liability when you sell. Reputable plumbers handle permit applications as part of the project — if a contractor says permits are not needed, that is a red flag.
Costs differ dramatically. New construction plumbing for a 2,000-square-foot home typically runs $12,000 to $18,000 depending on fixture count, whether radiant floor heating is included, and if a water softener loop is roughed in. Renovation plumbing is harder to estimate because the scope depends on what is behind the walls. A straightforward kitchen reno with accessible plumbing might cost $3,000 to $5,000. A full gut with repiping, drain replacement, and vent upgrades can reach $15,000 or more.
Gas line work adds another layer. If your renovation includes moving or upgrading a water heater, adding a gas fireplace, or installing a gas range, the gas line must be sized, inspected, and pressure-tested by a certified gas fitter. In Kamloops, gas permits are separate from plumbing permits and require a BC-licensed gas contractor. We hold both licenses and handle gas work as part of our renovation services.
Water heater placement is a common renovation challenge. Old homes often have the water heater in a cramped closet or a basement corner with no room for a modern unit. Tankless water heaters solve this by mounting on a wall, but they require proper gas line capacity and venting. A 1990s home with a 1/2-inch gas line may need upgrading to 3/4-inch or 1-inch to support a tankless unit. This is the kind of hidden cost that a pre-renovation inspection catches early.
For homeowners renovating an older Kamloops property, the smartest investment is full repiping if the existing system is galvanized, Poly-B, or showing signs of failure. Patching new work into old pipe is cheaper upfront but creates future failure points at the connections. A full repipe during renovation is far less disruptive than doing it later — the walls are already open, the plumber is already on-site, and the new system adds significant resale value.
The bottom line: new construction is about designing the ideal system. Renovation is about uncovering reality and adapting to it. Both require a licensed plumber who knows Kamloops housing stock, local codes, and the specific challenges of working in older homes. Before you start your project, schedule a consultation to scope the plumbing work accurately — it will save you money and headaches before a single wall is opened.
