The Definitive Australian Guide to Bathroom Renovations
Most bathroom renovations in Australia go sideways for the same handful of reasons. Budget blowouts nobody saw coming. Waterproofing that was rushed or skipped entirely. A tradie who seemed fine until things got complicated — and then stopped answering calls. By the time the problems show up, the tiles are grouted, the fixtures are in, and fixing it properly means pulling the whole lot out.
This guide exists so that doesn’t happen to you. Real cost ranges, the full process, how long it actually takes, the compliance requirements that are non-negotiable, and a straight answer to how you tell a solid renovator from one who isn’t.
What Does a Bathroom Renovation Actually Cover?
Before you start getting quotes, it’s worth being clear on what you’re actually asking for. The scope determines everything: who you need, what it costs, how long it takes, and what compliance requirements apply.
There are three broadly distinct scopes:
Cosmetic refresh
New tapware, vanity, mirror, paint, accessories. No tiles removed, no layout changes, no waterproofing required. Budget $3,000–$8,000. If your bathroom is structurally sound and you’re just tired of looking at it, this is usually the right call.
Partial renovation
New tiling, shower screen, vanity, and fixtures — but the layout stays put. Waterproofing is almost always required here, which means licenced trades and compliance with AS3740. Budget $8,000–$18,000, depending on the tiled area and fixture quality.
Full renovation
Full demolition. Everything comes out and starts fresh. New waterproofing, new tiling, new plumbing fixtures, new electrical, new everything. This is a proper building project. It requires the right licences, a written contract, and a realistic timeline. Budget $18,000 upward — and significantly more for large, high-spec, or complex bathrooms.
Knowing which category you’re in before you pick up the phone saves a lot of wasted conversations. A quote for a partial reno and a quote for a full gut are not the same document — even if both say “bathroom renovation” at the top.
For a deeper look at what separates the tiers on quality and longevity, see our guide on cheap vs premium bathroom renovations.
What Does a Bathroom Renovation Cost in Australia?
Here’s the number most guides bury three paragraphs in: a full bathroom renovation in Australia typically costs between $18,000 and $32,000. Small bathrooms can come in around $12,000–$20,000. Ensuites sit in the $14,000–$25,000 range. High-end work — custom tiling, layout changes, premium fixtures throughout — runs $35,000 to $60,000 and beyond.
Those are real numbers. Not “it depends” dressed up as information.
| Renovation type | Typical price range | Typical timeline |
|---|---|---|
| Cosmetic refresh | $3,000 – $8,000 | 2–5 days |
| Partial renovation | $8,000 – $18,000 | 1–2 weeks |
| Full bathroom renovation | $18,000 – $32,000 | 2–4 weeks |
| Ensuite full renovation | $14,000 – $25,000 | 2–3 weeks |
| High-end / layout change | $35,000 – $60,000+ | 3–6 weeks |
What moves the price
Size and layout: straightforward. Bigger bathroom, more tiles, more waterproofing area, more time. Layout changes — moving the toilet, relocating the shower — require new drainage and add cost fast.
Fixture quality: budget tapware and vanities are cheap to buy and expensive in the long run. Cartridges fail, finishes corrode, replacements aren’t stocked. Mid-range fixtures ($250–$600 for a mixer set) are the practical sweet spot for most bathrooms.
Tiling complexity: standard 300×600 wall tiles laid straight is the baseline. Large format tiles, mosaic feature walls, herringbone patterns — each adds labour time. The tile setter is often the most skilled and expensive trade on a bathroom renovation, and for good reason.
Waterproofing: cannot be skimped on, cannot be skipped, and has a cost attached whether it’s itemised in the quote or not. If it’s not itemised, ask. Any renovator who can’t point to waterproofing as a specific line item is hiding it somewhere — or not doing it properly.
- Residential building work in NSW valued at over $20,000 requires the contractor to hold Home Building Compensation (HBC) insurance before work begins.
- This is a legal requirement. It cannot be waived by the homeowner, and a contractor who tells you otherwise is not someone you want on your job.
- See our full guide to HBC insurance in NSW for details on what it covers and how to verify your contractor’s policy.
One more thing: budget 10–15% contingency on top of whatever the quote says. Older bathrooms almost always surface something unexpected — old plumbing that needs replacing, substandard previous waterproofing, asbestos in pre-1990 walls. The contingency is not extra spending money. It’s the amount you need to not be caught short when something real comes up.
How Long Does a Bathroom Renovation Take?
A quality full bathroom renovation takes two to four weeks. Not five days. Not a long weekend. Two to four weeks — and if someone is quoting you a full gut-and-rebuild in less than that, you need to understand what they’re compressing.
- If a renovator quotes a complete full bathroom renovation in 5 days or less, ask specifically how they are managing waterproofing cure time.
- AS3740 requires a minimum of 24–48 hours per coat, and the final coat cannot be tiled over until fully cured.
- Compressing this step produces membrane failures that show up as damp walls, mould, and tile adhesion failure — typically 2–5 years in, well after anyone is going to take responsibility for it.
- See our breakdown of common waterproofing shortcuts for more detail.
What else causes delays? Fixture lead times — if you’ve specified a vanity that’s four weeks out from the supplier, the renovation can’t finish without it. Trades scheduling — when your tiler finishes, your plumber needs to be available. And scope changes mid-project — which happen more often than anyone plans for, and always take longer than expected.
Build the time into your plans. If you need the bathroom functional by a specific date, work backwards from that date when you book, not forward from when you’d like to start.
Planning Your Bathroom Renovation
The homeowners who end up happiest with their renovations are almost never the ones who moved fastest. They’re the ones who spent three weeks on the planning before a tradie set foot in the house. Here’s the sequence that works:
The planning phase feels slow. It is slow, deliberately. A renovation that starts well almost always finishes better than one that starts quickly.
Choosing the Right Materials
You don’t need to become a materials expert before renovating your bathroom. But you do need enough working knowledge to avoid the cheap decisions that look fine on the day and cause regret for the next ten years. Here’s what actually matters:
Tiles
Porcelain is the practical choice for most bathrooms — hard-wearing, low maintenance, available in every format and finish. Ceramic is fine for wall tiles, not recommended for bathroom floors where slip resistance and durability matter more.
Natural stone — marble, travertine, limestone — looks exceptional and costs more to install properly. It requires sealing and the grout lines need ongoing attention. If you love it and you’re prepared to maintain it, it’s a great choice.
Large format tiles (600×600 and above) require a very flat substrate, more skilled installation, and take longer to lay. Factor that into the tile budget, not just the per-square-metre price. See our notes on sustainable material choices if that’s a consideration.
Tapware
Buy once, buy right. Cheap tapware — $80–$150 mixers — uses inferior cartridges that fail within three to five years. The fitting cost to replace them is often more than the saving on the original purchase. Mid-range ($250–$600 for a quality mixer set) is where most residential bathrooms should sit.
Matte black and brushed brass are popular at the moment. Both are fine finishes if the product quality is there — and both show every mark and water spot if it isn’t.
Vanities
Wall-hung vanities look clean, make the floor easy to mop, and are genuinely more hygienic. They also require solid substrate behind the wall — not something every bathroom has without additional work. Freestanding vanities are simpler to install, better at concealing plumbing, and often significantly cheaper. Neither is wrong — the choice should be informed by what’s practical for the space, not just what looks good in a showroom.
Shower screens
Frameless screens are beautiful. They’re also 2–3 times the cost of semi-frameless and require precise installation to seal and function properly. For most bathrooms, a semi-frameless screen — frameless panel, minimal bottom channel — hits the right balance of aesthetics and practicality. Full frameless is absolutely worth it when the budget allows and the installation is done properly.
Finding a Trusted Bathroom Renovator in Australia
This is the part that goes wrong most often. Not the tiles, not the fixtures — the person doing the work. Finding a good bathroom renovator is not difficult if you know what to look for. It is very difficult if you’re starting from scratch, comparing quotes without a framework, and hoping the person who quoted first is actually qualified.
Start with licensing. It’s not optional, and it varies by state:
- NSW: Contractor Licence — NSW Fair Trading
- VIC: Domestic Builder Licence — Victorian Building Authority (VBA)
- ACT: Builder Licence — Access Canberra
- QLD: Contractor’s Licence — Queensland Building and Construction Commission (QBCC)
- WA: Building Services (Contractor) Licence — Building and Energy WA
- SA: Building Work Contractors Licence — Consumer and Business Services (CBS)
Ask for the licence number. Look it up. Takes two minutes. If they won’t provide it, or if the number doesn’t come up on the relevant state register, that’s your answer.
Beyond licensing, here’s what a legitimate quote and contract looks like: written, itemised, with waterproofing as a specific line item. Payment milestones tied to completed phases — not 50% upfront before a single tile comes off the wall. A realistic timeline. A dispute resolution process. If the quote is a one-line total on a scrap of paper, that’s not a quote — it’s a number someone said out loud.
- Cash-only quotes with no written contract offered.
- Waterproofing not mentioned or not priced as a separate line item.
- Quote significantly lower than others with no explanation for why.
- Pressure to sign or pay a deposit before you’ve had time to check references.
- Cannot or will not provide a licence number.
- No previous bathroom renovation work they can show you or reference.
- Raise the waterproofing compliance requirements and build them into the quote.
- Flag if your bathroom is likely to surface anything unexpected during demolition.
- Provide a written contract with a payment schedule tied to milestones.
- Give you a realistic timeline — not the fastest one that gets you to sign.
- Be across the licencing requirements for your state and be able to verify their own.
Lifestyle Bathrooms is a referral platform — not a builder, not a contractor, not a renovation company. Our job is to connect homeowners with pre-vetted, licenced renovation specialists who have already been checked against the criteria above. We don’t manage the renovation. We do the vetting work so you don’t have to start from zero.
We check licensing, insurance, references, and track record before a specialist joins our network. When we connect you with someone, that’s not a cold referral — it’s a warm introduction to a specialist we’ve already assessed. See our vetting standards.
Permits, Compliance & What the Law Requires
Some of this is straightforward. Some of it surprises people. Here’s what applies to almost every bathroom renovation in Australia, regardless of state.
Waterproofing — AS3740
Waterproofing to the Australian Standard AS3740 is a legal requirement for all wet areas. Not a best-practice recommendation. Not something a good renovator does. A mandatory minimum standard that carries liability if it isn’t met. This applies to shower recesses, floors within the wet zone, and any walls behind fixtures that see regular water exposure. See our full AS3740 guide.
NCC wet area requirements
The National Construction Code sets minimum standards for bathroom ventilation, floor drainage grades, and — in accessible housing — specific spatial and fixture requirements. Most standard residential renovations won’t trigger the full accessibility provisions, but ventilation and drainage grade requirements apply broadly. See the NCC bathroom standards guide.
Building permits
Moving a toilet, relocating a shower drain, structural wall changes, or modifying electrical circuits — any of these may require a building permit. The permit requirement varies by state and by the nature of the work. Ask your renovator directly: “Does this scope require a permit, and if so, who organises it?” Get the answer in writing. More detail at building codes and compliance.
HBC insurance in NSW
Residential building work in NSW valued at $20,000 or more requires the contractor to hold current Home Building Compensation (HBC) insurance. The homeowner cannot waive this requirement. Before any work starts, ask for evidence of the policy. If the contractor can’t produce it, the job cannot legally proceed. Full HBC insurance guide here.
Getting compliance right is not bureaucracy for its own sake. A bathroom that fails AS3740 can void your home insurance claim for water damage. A renovation done without a required permit can create problems at sale. These are real consequences, and the compliance requirements exist because the alternative is worse.
Mistakes That Cost Australian Homeowners Thousands
These aren’t hypothetical. They’re patterns — things that come up again and again in bathroom renovations that end in disputes, defects, or bills the homeowner didn’t see coming. Read this section before you sign anything.
1. Cheapest quote without checking the licence
The cheapest quote is often cheap because something is missing — usually waterproofing compliance, insurance, or both. Defects don’t show up on day one. They show up two years later when the wall cavity is wet. Rectifying unlicenced waterproofing work typically costs $15,000–$40,000 by the time you’ve ripped out all the tiles and done it properly.
2. Tiling before waterproofing has cured
AS3740 requires minimum cure times between coats and before tiling begins. A tradie under pressure to move to the next job will sometimes compress this. Membrane failures caused by insufficient cure time typically present as damp walls, tile adhesion failure, or mould growth — 2–5 years in, well after anyone is going to take responsibility. Rectification means stripping all the tiles and starting again.
3. Skipping the written contract
Verbal agreements are enforceable in theory. In practice, they’re a dispute waiting to happen. When scope changes — and it usually does — there’s nothing to go back to. A proper contract includes a written scope, payment milestones tied to completion phases, start and completion dates, a process for variations, and a dispute resolution clause.
4. Ignoring ventilation
Bathroom ventilation is specified in the NCC for a reason. Inadequate ventilation is the primary driver of mould growth in Australian bathrooms — and serious mould remediation in a tiled, poorly ventilated bathroom is not a cheap fix. A renovation is the right time to sort this. It’s not expensive at the point of renovation. It is expensive after.
5. Underestimating the contingency
Every experienced renovator will tell you the same thing: bathrooms surprise you. Old plumbing that should have been replaced a decade ago. Previous waterproofing applied over moisture-damaged substrate. Asbestos in the walls of pre-1990 homes. If you haven’t budgeted a contingency, you end up making scope decisions under financial pressure. Ten to fifteen percent is the floor.
6. Locking in fixtures after the quote
Fixture allowances in quotes are a trap. The renovator builds in a number and you sign. Then you go to the showroom and choose something different. The budget just changed, and you have no clean way to manage it. Choose your fixtures before the quote is finalised. Get prices. Give the renovator specific models to quote against. Now the quote reflects what you’re actually building.
Frequently Asked Questions
Do I need a permit to renovate a bathroom in Australia?
Depends on what’s changing. Cosmetic work — new tapware, vanity, mirror, paint — generally doesn’t require a permit. But if you’re moving plumbing, altering drainage, doing structural work, or modifying electrical circuits, a building permit is likely required. The threshold varies by state and council. Your renovator should flag this upfront. If they don’t, ask directly.
How much should I budget for a full bathroom renovation?
For a standard full renovation in Australia, the realistic range is $18,000–$32,000. Small bathrooms can come in at $12,000–$20,000. High-end or complex bathrooms — custom tiling, layout changes, premium fixtures throughout — run $35,000 to $60,000 and beyond. Hold 10–15% contingency on top of whatever the quote says. Something unexpected almost always surfaces behind the walls in a full reno, and it’s better to have money set aside than to be making scope decisions under financial pressure.
How long does waterproofing take to cure?
AS3740 specifies minimum cure times — typically 24–48 hours per coat, and no tiling until the membrane is fully cured. A full waterproofing system generally needs 3–5 days from application to tile-ready, depending on the product used. Any renovator who tells you they can tile the day after waterproofing is either using a fast-cure product they should be able to show you the technical data sheet for, or they’re cutting a corner you’ll eventually pay for. Ask the question. The answer tells you a lot.
Can I live at home during a bathroom renovation?
Usually, yes — provided you have a second bathroom. If it’s your only bathroom, plan for alternative arrangements for at least two to three weeks. Discuss this with your renovator before work starts. A good one will raise it without being prompted.
What’s the difference between a bathroom renovation and a refresh?
A refresh is cosmetic: new tapware, accessories, vanity, paint. No tiles removed, no waterproofing, no licenced building work required. Budget $3,000–$8,000, timeline a few days. A renovation involves stripping tiles, replacing fixtures, and almost always requires compliant waterproofing — which makes it a building project governed by Australian Standards and state licencing requirements. If someone is quoting a full tile-out reno at refresh prices, ask why.
Is Lifestyle Bathrooms a builder or contractor?
Neither. We’re a referral platform. Our job is to connect homeowners with pre-vetted, licenced renovation specialists — not to build or manage the renovation ourselves. We don’t hold a contractor licence, and we’re transparent about that. What we do is vet the specialists in our network: licencing checked, insurance verified, references reviewed. When we make a connection, it’s a warm introduction to someone we’ve already assessed. See our vetting standards.
What states does Lifestyle Bathrooms operate in?
Our specialist network currently covers NSW, ACT, and select areas of Victoria and Queensland. We’re expanding. If you’re outside our current coverage, get in touch anyway — we may be able to help or point you toward the right resources for your area.
Ready to Get Your Bathroom Done Properly?
Tell us about your bathroom and what you’re looking to achieve. We’ll connect you with a licenced specialist in your area who’s already been vetted — no obligation, no hard sell, no cold referrals.