Decisions to make before the plumber arrives — fixture spec, layout changes, hot water sizing, rough-in timing and the order trades work in. Save yourself a week of delays.
A bathroom renovation is one of the highest-value upgrades a Kapiti homeowner can do. It is also one of the most delay-prone — trades collide, fixtures arrive late, and a single missed measurement can hold the whole job up a week. Most of the friction comes back to decisions that should have been made before the plumber turned up.
Decide on the layout first, fixtures second
The plumbing rough-in is the bones of the bathroom. Walls in, walls out, where the toilet sits, whether the vanity moves under the window — those are the calls that determine how much plumbing work the job actually is. Tony has lost count of how many renovations have the layout finalised on the day rough-in is supposed to start.
Spec the fixtures before rough-in starts
Different shower mixers, basin mixers and bath spouts have different rough-in requirements — hose lengths, valve depths, body heights. Quality brands like Methven, Greens and Caroma publish exact rough-in specs. Locking in the model numbers before the walls go up means no surprises at fit-out time.
- Shower — mixer model, head type, drain location and direction.
- Bath — fixed or freestanding, spout type, waste position.
- Basin — under-mount or counter-top, pop-up waste or click-clack.
- Toilet — concealed cistern (frame-mounted, needs more wall space) or back-to-wall.
- Heated towel rail — wired vs plumbed, hardwire vs plug.
Talk through the order of trades
A bathroom is roughly five trades: builder, plumber, electrician, tiler, and the plumber again for fit-out. Tony coordinates the plumbing-side timing directly with your builder — first rough-in usually runs over 2 to 4 working days, then the wall lining and tiling go in, then a half-day to a day at the end for fit-out. Getting that sequence right is the single biggest delay-preventer.
Hot water sizing
A renovation that adds a second bathroom or a larger shower head changes the hot-water demand. An old electric cylinder that was fine for one bathroom may not keep up with two. Tony assesses cylinder size during the quote and flags whether the existing system will cope, or whether it is the time to upgrade alongside the renovation.
Council and compliance
Most like-for-like fixture replacements in a Kapiti home do not need a building consent. Moving a toilet, adding a bathroom, or changing the wet-area layout often does. Restricted Building Work (RBW) drainage and certain water-supply changes need a Producer Statement, which a PGDB-licensed plumber can issue. We handle the paperwork as part of the job.
Budget realistically
Plumbing on a standard Kapiti bathroom renovation typically lands somewhere between $4,500 and $9,500 + GST, depending on whether the layout is moving, what cylinder work is included and the fixtures spec. Quotes are free and Tony does on-site assessments for any renovation work.