The Real Cost of a Bathroom Renovation in Melbourne (2026)

“How much does a bathroom renovation cost?” is one of the most common questions we get — and the honest answer is that it depends, because a small refresh and a full structural rebuild are very different jobs. Here’s where the money actually goes so you can budget with your eyes open.

What drives the cost

• Size and layout. Keeping plumbing where it is keeps costs down. Moving the toilet, shower or vanity means new waste and water lines — more work, more cost.
• The condition behind the tiles. Old waterproofing, water damage or rotten framing discovered during demolition adds to the job. It’s worth budgeting a contingency for it.
• Fixtures and finishes. Tiles, tapware, vanities and screens span a huge price range. This is where budgets swing the most.
• Waterproofing and tiling. Done properly, to standard — this is not the place to cut corners, because failures here are ruinous.
• Trades involved. A bathroom touches plumbing, waterproofing, tiling, electrical and plastering. Coordinating them well keeps the job moving.

Where the money goes

Labour and waterproofing/tiling typically make up a large share of a bathroom budget — the finishes you choose sit on top of that. Two bathrooms of the same size can differ enormously based on tile choice and how much plumbing is relocated.

How to budget realistically

• Decide early what you’re keeping versus moving — layout changes are the biggest cost lever.
• Set aside a contingency for what’s found behind the walls.
• Get an itemised quote so you can see where money is going and adjust finishes to suit.
• Don’t compromise on waterproofing to save money — a failure means doing it all again.

The most useful first step is a proper on-site quote, where someone can see the space, talk through what you want, and give you real numbers rather than a guess off a photo.