A bathroom renovation in Australia commonly costs somewhere between 10,000 and 50,000 dollars, with a typical mid-range full renovation landing around 20,000 to 35,000 dollars (last checked June 2026). Where you sit in that range comes down to the size of the room, the quality of the fixtures, and the single biggest swing factor of all: whether you move the plumbing.
Those numbers are broad on purpose. Bathroom renovation cost varies widely by state, by the scope of work, by the fixtures you choose, and by the quirks of your particular site. A small ensuite refresh in a newish unit is a completely different job to gutting a 1970s family bathroom with rusted pipes behind the wall. So treat every figure here as a starting point for a conversation, not a price tag. The only real number is a written quote for your bathroom.
What you actually get at each price tier
It helps to think in tiers rather than a single average, because a bathroom renovation is really a spectrum. At the bottom you are freshening up. At the top you are rebuilding the room from the studs out, with stone, custom joinery, and tapware that costs more than a weekend away.
Here is a rough breakdown of where the money goes, last checked June 2026. Prices are indicative ranges only and will shift with your location and the state of the building.
| Tier | Typical cost (AUD) | What it usually covers |
|---|---|---|
| Budget / cosmetic | 10,000 to 20,000 | Keep the existing layout, re-tile or paint, new vanity, toilet, tapware, basic shower screen. No moving plumbing. |
| Mid-range full reno | 20,000 to 35,000 | Strip back to studs, new waterproofing, full re-tile, quality fixtures, possibly a freestanding bath, minor plumbing changes. |
| High-end / large | 35,000 to 50,000+ | Bigger or luxury bathroom, stone benchtops, frameless glass, underfloor heating, custom joinery, relocated plumbing, premium tapware. |
The jump between tiers is rarely about one big-ticket item. It is the accumulation of small upgrades. Swap standard tiles for a herringbone pattern, add a niche, choose a wall-hung vanity, specify matte black tapware throughout, and you have quietly moved from mid-range to high-end without a single dramatic decision.
Where the money really goes
Most people assume the cost is in the materials they can see. In reality, the bulk of a bathroom renovation is labour and trades, not the tiles and tapware sitting in the showroom.
A typical full reno pulls in a tiler, a plumber, an electrician, a waterproofer, and often a carpenter, a plasterer, and a shower screen installer. Each one needs their slot in the schedule, and the bathroom is one of the most trade-dense rooms in the house per square metre. That density is exactly why the cost per square metre feels so high compared with, say, repainting a bedroom.
Tiling
Tiling is one of the largest single line items, and the price swings on two things: the tiles themselves and how fiddly they are to lay. Large-format tiles, mosaics, patterns, and feature walls all push the labour up. A simple white square tile laid straight is cheap to install. A small hexagon mosaic across a curved wall is not.
Plumbing
Plumbing is where budgets quietly explode. Keeping every fixture in its existing spot is the affordable path. The moment you decide to move the toilet, relocate the shower, or shift the vanity to the other wall, you are into new pipework, new drainage, and sometimes cutting into the slab. Moving the toilet in particular adds significant cost, because the waste pipe is not a quick reroute. If your budget is tight, the cheapest decision you can make is to leave the plumbing roughly where it is.
Waterproofing
Waterproofing is non-negotiable and it is not the place to cut corners. In Australia it must comply with the relevant Australian Standards and be carried out by a licensed waterproofer. Done properly it is invisible and you will never think about it again. Done badly it is the single most expensive mistake in the house, because failed waterproofing means leaks, rot, and ripping out a brand new bathroom to start over. Pay for it, document it, and keep the certificate.
Fixtures and tapware
Fixtures and tapware span an enormous range. A basic toilet, vanity, and mixer set can be had for a few hundred dollars each. Designer equivalents run into the thousands. The fittings are one of the few areas where you have direct, real-time control over the budget, so this is where most people dial the spend up or down to hit their number.
If you are not moving the plumbing, you are saving thousands. If you are, budget for it honestly and stop pretending it is a small change.
How long does it take?
A typical full bathroom renovation takes around 3 to 6 weeks from demolition to the final silicone bead. That assumes a reasonably clear run. The timeline stretches when trades have to wait on each other, when there is a curing or drying period after waterproofing, and when materials are on back order.
The room may sit apparently untouched for a day or two between stages, and that is normal, not slackness. Waterproofing needs time to cure before tiling. Tiling needs time to set before grouting. A renovation that looks idle is often just respecting the chemistry. If you only have one bathroom in the house, plan your living arrangements around the longer end of that range rather than the shorter one.
Where budgets blow out
The overruns are almost always the same handful of culprits, and most are avoidable with a bit of foresight.
The first is changing your mind mid-job. Every variation after work starts costs more than it would have on paper, because trades have to undo and redo. The second is what the demolition reveals. Old homes hide surprises behind the walls: rotten timber, asbestos, corroded pipes, dodgy old wiring. None of that is visible when you get the quote, and all of it costs money to fix once it is exposed.
The third is creep at the fittings stage, where the lovely tile becomes the lovelier, dearer tile and the tapware quietly doubles. The fourth is structural ambition. Knocking out a wall to enlarge the bathroom, adding a window, or relocating the whole layout turns a renovation into something closer to a small build.
If you want to keep the number under control, lock your design before anyone swings a hammer, get a contingency of around ten to fifteen per cent set aside, and resist the urge to upgrade once the project has momentum.
Getting a real number
Online ranges are useful for sanity-checking and rough planning, and that is all. Your actual cost depends on your room, your fixtures, your state, and what is hiding behind your walls. The sensible move is to get a few detailed, itemised quotes so you can compare like for like, and so you can see exactly where each renovator has priced the tiling, the waterproofing, and the plumbing.
When you are ready, get quotes from licensed bathroom renovators and ask each one to break the figure down by trade rather than handing you a single lump sum. A good quote tells a story; a one-line number tells you nothing.
It is also worth checking the tradie before you sign. A quick read of how to find a good tradie will save you more grief than any pricing guide. And if the bathroom is part of a bigger project, our overview of home renovation costs in Australia puts the spend in context against the rest of the house.
The bottom line
Budget roughly 10,000 to 20,000 dollars for a cosmetic refresh, 20,000 to 35,000 for a solid full renovation, and 35,000 to 50,000 or more for something large or luxurious, last checked June 2026. The cost lives in the labour, the tiling, the plumbing, and the waterproofing, not the shiny fittings you picked out first. Keep the plumbing where it is if you can, never cut corners on waterproofing, set aside a contingency, and lock your choices before work begins. Then get a few itemised quotes, because for your bathroom, in your home, the only number that means anything is the one a renovator writes down for you.