If you've started pricing up a bathroom renovation, you've probably noticed the numbers vary wildly – one tradie's ballpark is another's starting point. That's because bathroom reno costs depend on so many moving parts: the size of the room, what condition it's in behind the tiles, and how far you want to push the finishes.
This guide walks through realistic 2026 price ranges for Australian bathroom renovations, what actually drives the cost up or down, and where homeowners typically get caught out. As always, treat every figure here as a guide only – get a handful of quotes from licensed local tradies before you commit to a budget.
Two bathrooms that look similar on the surface can cost very different amounts to renovate. As a guide, the main factors are:
As a rough guide only, here's what Australian homeowners are typically budgeting for a standard-sized bathroom (around 4–6 square metres) in 2026. Prices vary by state, city versus regional location, and the individual home – always get multiple quotes.
| Budget Tier | Typical Cost Range (AUD, inc. GST) | What's Included |
|---|---|---|
| Budget / Cosmetic | $15,000 – $25,000 | Keep the existing layout, re-tile or tile over, new standard fixtures, tapware and vanity, basic waterproofing top-up |
| Mid-range | $25,000 – $40,000 | Full strip-out and rebuild, new waterproofing membrane, quality tiles and tapware, semi-custom vanity, some layout tweaks |
| High-end / Luxury | $40,000 – $70,000+ | Full layout redesign, freestanding bath, frameless shower screen, custom joinery, heated towel rail, underfloor heating, premium tiles and tapware brands |
Ensuites are often slightly cheaper than main bathrooms simply because they tend to be smaller, while a combined bathroom-laundry or a bathroom with a bath and separate shower will usually sit at the higher end of its tier.
It helps to understand where the money actually goes. These are indicative ranges for a standard bathroom, as a guide only – they'll shift depending on your specific job:
Waterproofing and tiling are usually the two trades that eat up the most time on site, which is part of why bathroom renos take longer than their size suggests.
Size matters, but perhaps less than you'd expect. A small ensuite (under 3–4 square metres) can still cost close to what a larger bathroom costs, because many expenses – waterproofing labour, plumbing rough-in, tradie call-outs, permits – are fairly fixed regardless of room size.
Where size does matter most is materials – more floor and wall area means more tiles, more waterproofing membrane, and potentially a bigger vanity or bath.
There are genuine ways to bring the cost down without cutting corners on the things that matter (waterproofing being the big one you should never skimp on):
These are the extras that catch homeowners out and blow the budget if they're not planned for upfront. As a guide, it's wise to set aside a contingency of 10–20% of your total budget for the unexpected:
Bathrooms are one of the trickiest rooms in the house to DIY, mostly because of waterproofing and plumbing – get either wrong and you risk leaks, mould and structural damage that cost far more to fix later than they would have to do properly the first time.
Reasonable DIY tasks for a confident homeowner include demolition, painting, and installing accessories like towel rails or mirrors. Tiling is sometimes tackled by experienced DIYers, but a poor tiling job over faulty waterproofing is a recipe for expensive problems down the track.
Waterproofing, plumbing and electrical work should be left to licensed professionals – not just for quality reasons, but because it's a legal requirement in every Australian state and territory.
Yes, for the core trades – and it's not optional. Across Australia, plumbing and electrical work in a bathroom renovation legally must be carried out by a licensed plumber and licensed electrician respectively. Waterproofing also typically needs to be done or certified by a licensed waterproofer or builder, as most states require a Certificate of Compliance for wet areas.
Beyond the legal side, using licensed tradies means the work is covered by statutory warranty and, in most cases, home warranty insurance for larger jobs – which matters if something goes wrong years down the track. Always ask to see a tradie's licence number and check it against your state or territory's licensing authority (such as the QBCC in Queensland or Fair Trading in NSW) before signing anything.
Once you have a target budget, plug your room size and finish level into our renovation cost calculator for a tailored estimate, then compare it against real quotes.
Ready to line up trades? Browse licensed local renovators and tradies in our directory, and if you are weighing up finance, see our guide to the best mortgage brokers by city. You may also find our kitchen renovation cost guide and step-by-step guide to hiring a builder useful.
As a guide, a small ensuite renovation typically costs between $12,000 and $25,000, depending on the finish level and whether the layout changes. Even small ensuites carry many of the fixed costs of a larger bathroom, like waterproofing and plumbing labour.
Renovating within the existing footprint is almost always cheaper, since relocating a bathroom means running new plumbing, drainage and often electrical circuits. Moving a bathroom can add thousands of dollars, so it's worth exploring whether you can achieve your desired layout without shifting the wet areas.
A standard bathroom renovation typically takes 3 to 6 weeks from demolition to completion, though this depends on trade availability, whether custom items need to be ordered, and if any unexpected issues (like water damage) come up along the way.
Generally, cosmetic renovations that don't change the layout or structure don't need council approval. However, if you're moving plumbing, altering windows, changing the roofline, or the work affects structural elements, you may need a permit – check with your local council or builder before starting.
Changing the layout (particularly moving plumbing), poor underlying condition (water damage, old pipework, asbestos), and premium fixture or tile choices tend to add the most cost. Sticking with the existing layout is one of the biggest cost-savers available.
Doing it all at once is usually more cost-effective, since you avoid paying multiple call-out and mobilisation fees for the same trades. Staging can help spread the cost over time, but it often costs more overall and can mean living with an unfinished bathroom for longer.
