Bathroom Renovation Plumber Melbourne: What You Need Before the Tiles Go In

The bathroom is the most plumbing-intensive room in your Melbourne home, and a renovation is the worst time to cut corners on the plumbing work. A beautifully tiled bathroom that leaks behind the walls or has incorrectly graded drain falls costs significantly more to fix after the tiling than before. Here’s what you need to have sorted before a single tile goes in.

Stage 1: rough-in, before concrete or walls are closed

This is the critical stage where your plumber sets the position and height of every connection. In Melbourne, rough-in work involves:

• Setting the floor waste position and fall direction (requires consultation with your tiler)
• Confirming the toilet rough-in distance (140mm in most Melbourne homes — measure before buying a new pan)
• Positioning hot and cold supply stubs for the shower mixer, basin mixer, and bath spout at the correct height off the finished floor level
• Installing the shower drain and connecting to the waste system
• In VIC, all rough-in work requires a licensed plumber and the work must be inspected by the relevant authority before walls are closed

Stage 2: fit-off, after tiling

Once your tiler has finished, your plumber returns to connect and install all the visible fixtures:

• Shower mixer and shower rose installation
• Basin mixer and taps
• Bath spout and filler installation
• Toilet suite connection and installation
• Shower screen installation (some plumbers do this, some don’t — clarify with your plumber)
• Testing all fixtures and connections before sign-off

What Melbourne bathroom renovations typically cost, plumbing only

FAQs about bathroom renovation plumbing in Melbourne

Do I need a permit for bathroom plumbing in Melbourne?

In Victoria, plumbing work that involves changing the position of waste pipes or water supply points typically requires a plumbing permit from the VBA (Victorian Building Authority). Your licensed plumber handles the permit application. Simple like-for-like replacements don’t require a permit.

How far in advance should I book a plumber for a renovation in Melbourne?

For a bathroom renovation, book your plumber before you book your tiler. The plumber needs to set rough-in positions that determine where tiles can be cut. Allow at least 1–2 weeks advance notice for renovation work.

Can you help me plan the plumbing layout for my renovation?

Yes. We offer a consultation visit where we assess your existing plumbing layout, advise on what’s practical in terms of relocating fixtures, and provide a detailed scope and quote. This is always done before any work begins.