Bathroom Renovation Cost Calculator.Know what it should cost.
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A bathroom renovation in Australia typically costs between $17,500 and $35,000 in 2026, with most projects landing around $26,000.
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What goes into the number.
We start from a typical bathroom renovation range and apply your location, size, scope, finish and complexity choices to refine it. Add-ons are added as flat amounts on top.
- Bathroom size and layout changes (relocating drains is the single biggest cost driver).
- Finish level — tiles, tapware and vanities vary 3–4× between budget and luxury.
- Waterproofing area — larger wet zones cost more to certify.
- Demolition — concrete substrate or asbestos sheet adds disposal cost.
- Trade availability in your area at the time of the build.
Frequently asked questions
How much does a bathroom renovation cost in Australia?
A bathroom renovation in Australia typically costs between $17,500 and $35,000 in 2026, with most projects landing around $26,000. Pricing varies with size, finish level, complexity and your location. Use the calculator above for a range tuned to your project.
How long does a typical bathroom renovation take?
A standard strip-out and refit is usually 3–5 weeks on site once trades start. Layout changes, custom tiling or premium fixtures can extend the timeline.
Do I need council approval?
Most like-for-like bathroom renovations are exempt or fall under complying development. Structural changes, moving wet areas, or work in heritage zones may require approval.
Why are bathrooms so expensive per square metre?
Bathrooms pack the highest density of trades — plumbing, electrical, waterproofing, tiling, joinery, glazing — into a small space. Almost every surface is wet-area certified, which adds compliance cost.
Will moving the toilet or shower really cost that much extra?
Yes. Relocating fixtures means new drainage falls, opening floors or walls, and (often) waterproofing the whole room again. Plan around existing plumbing where possible.
Which parts of the job legally need licensed trades?
Plumbing and electrical work must be done by licensed trades everywhere in Australia, and most states also require waterproofing to be carried out or certified by a licensed applicator. Ask for the compliance certificates at handover, as you'll need them for insurance and resale. In several states the overall job also requires a licensed builder once it exceeds a value threshold.
How do I compare quotes properly?
Make sure each quote covers the same scope: demolition and disposal, waterproofing, tiling to the same height, fixtures supplied versus owner-supplied, and who handles certificates. A quote that looks cheaper often excludes items like niches, shower screens or a contingency for hidden water damage. Ask each builder to itemise inclusions and provisional sums so you're comparing like for like.
See local pricing for your city
Each city page includes a local pricing adjustment, assumptions and FAQs.
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