Choosing the wrong bathroom renovator is one of the most expensive mistakes an Australian homeowner can make. A poorly chosen contractor can leave you with failed waterproofing, unlicensed plumbing, shoddy tiling, and a renovation that needs to be completely redone within a few years – at full cost again.
The good news is that finding a quality, trustworthy bathroom renovator in Australia is not difficult if you know what to look for. In this guide, we walk you through every step – from checking licences to reading quotes – in plain, simple language.
Before you start getting quotes, it helps to understand what a bathroom renovation actually costs. Read our full bathroom renovation cost guide for Australia (2026) so you can spot an unrealistically low quote before it becomes a problem.
Why Choosing the Right Bathroom Renovator Matters So Much
Your bathroom is one of the most technically complex rooms in your home. It concentrates multiple licensed trades in a small space – plumber, waterproofer, tiler, electrician, and often a carpenter. Every one of these trades has legal requirements in Australia, and every failure point is hidden behind tiles and walls where you cannot see it.
Unlike a painting job or a garden renovation, a poorly done bathroom does not just look bad – it can cause serious structural damage through water leaks, create health risks through mould, and cost $20,000 to $50,000 to remediate if waterproofing has failed.
According to the Australian Institute of Waterproofing (AIW), failed waterproofing is the leading cause of building defects in Australia. The majority of cases trace back to unlicensed or poorly supervised waterproofing work during bathroom renovations.
Getting the renovator decision right protects your home, your budget, and your peace of mind for the next 15 to 20 years.
Step 1 – Check Their Licence Before Anything Else
The very first thing you should do when considering any bathroom renovator in Australia is check that they hold the correct, current licence for your state. This is not optional – it is the most important filter of all.
In Australia, bathroom renovation work involves trades that are legally regulated. Here is what to check:
| Trade / Work Type | Licence Required | Where to Verify |
| Builder / renovation contractor | Builder’s licence (state-specific) | Your state building authority |
| Plumber (water supply + drainage) | Plumbing licence | Your state plumbing authority |
| Waterproofer | Waterproofing licence (in most states) | Your state building authority |
| Electrician (lighting, exhaust fan, heated towel rail) | Electrical licence | Your state electrical safety authority |
| Gas fitter (if gas is involved) | Gas fitting licence | Your state gas regulator |
How to Verify a Licence in Each State
- NSW – Service NSW Licence Check: licence.service.nsw.gov.au
- VIC – Victorian Building Authority: vba.vic.gov.au
- QLD – Queensland Building and Construction Commission: qbcc.qld.gov.au
- WA – Building and Energy WA: building.wa.gov.au
- SA – Consumer and Business Services SA: cbs.sa.gov.au
- TAS – WorkSafe Tasmania: worksafe.tas.gov.au
- ACT – Access Canberra: accesscanberra.act.gov.au
- NT – NT Building Advisory Services: nt.gov.au/property
| ⚠ Never Accept a Verbal Assurance: Do not take a contractor’s word that they are licensed. Look it up yourself. Ask for the licence number, write it down, and search for it on your state authority’s website. A licensed contractor will never object to this – only an unlicensed one will. |
Step 2 – Confirm They Have the Right Insurance
A valid licence is not enough on its own. Your bathroom renovator must also carry adequate insurance. There are two types you need to confirm before any work begins:
1. Public Liability Insurance
This covers damage to your property or injury to anyone caused by the contractor’s work. For a bathroom renovation, $5 million to $20 million in public liability cover is standard. Ask for a current certificate of currency – not just a verbal confirmation – and check the expiry date.
2. Home Warranty Insurance (Domestic Building Insurance)
In most Australian states, any residential building work over a certain value requires the contractor to provide Home Warranty Insurance (also called Domestic Building Insurance in Victoria). This protects you if the contractor dies, disappears, or goes bankrupt before the work is complete, or if defects appear after the job is done.
| State | Scheme Name | Trigger Threshold |
| NSW | Home Building Compensation (HBC) | Work over $20,000 |
| VIC | Domestic Building Insurance (DBI) | Work over $16,000 |
| QLD | Queensland Home Warranty Scheme | Work over $3,300 |
| WA | Home Indemnity Insurance | Work over $20,000 |
| SA | Building Indemnity Insurance | Work over $12,000 |
| ACT | Works Warranty Insurance | Work over $12,000 |
| TAS / NT | Check with local authority | Varies |
| 💡 Important: If a contractor refuses to provide Home Warranty Insurance for a project that meets the threshold in your state, do not proceed. This insurance is a legal requirement – a contractor who cannot or will not provide it is either unlicensed, uninsured, or both. Walk away. |
Step 3 – Look at Their Experience and Past Work
Licences and insurance tell you a contractor is legal. Experience and past work tells you whether they are actually good at what they do. Here is how to assess this properly:
Ask for a Portfolio of Completed Bathrooms
Any reputable bathroom renovator in Australia will have photos of completed projects. Ask specifically to see bathrooms in a similar size and style to yours – not just their best showcase shots. Look for:
- Clean, straight tile lines with consistent grout widths
- Neat silicone joints at floor-wall junctions and around fixtures
- Well-fitted shower screens with even gaps and proper seals
- Flush, level vanity installations
- Clean finishes around lights, exhaust fans, and mirrors
If they cannot show you completed bathroom photos – or if every photo looks professionally staged rather than a real customer’s bathroom – that is a concern.
Visit a Completed Project If Possible
The best bathroom renovators are happy to arrange a visit to a recently completed job so you can see the quality in person. Seeing a real finished bathroom – not a showroom – gives you a much clearer picture of the actual finish quality than any photo can.
Check How Long They Have Been in Business
A company that has been operating for five or more years has survived the critical early period when most new trades businesses fold. Established renovators typically have more refined processes, better trade relationships, and a longer track record of satisfied customers.
You can search for a business’s registration date through ASIC Connect – Australia’s company register. This tells you how long the company has been registered as a legal entity.
Step 4 – Read Reviews Across Multiple Platforms
Online reviews are one of the most useful tools available to Australian homeowners choosing a renovator – but you need to read them correctly to get genuine value from them.
Where to Find Trustworthy Reviews in Australia
- Google Reviews – The most important platform. Reviews are linked to real Google accounts and cannot be easily manipulated at scale. Look for a minimum of 20 reviews before drawing conclusions.
- Houzz Australia (houzz.com.au) – Specifically for home renovation professionals. Reviews are project-specific and often detailed. A good presence on Houzz with real project photos is a strong positive signal.
- ProductReview.com.au – Australia’s largest consumer review site. Bathroom renovators and bathroom product suppliers are both listed here.
- hipages (hipages.com.au) – Australian trade hire platform. Reviews are verified against completed jobs.
- Word of mouth – If a neighbour, friend, or family member has had a bathroom renovation done recently and was happy with it, this is the most valuable referral of all. Ask them directly.
How to Read Reviews Properly
Do not just read the star rating – read what people actually say. Look for these specific things:
- Do reviews mention the quality of waterproofing or tiling specifically – not just that they were happy with the result?
- Do reviews mention the contractor’s communication during the project?
- Do reviews mention that the job was completed on time and on budget?
- Are there any negative reviews about hidden costs, poor finishing, or failure to fix problems after handover?
- How does the company respond to negative reviews – with professionalism or defensively?
| ⚠ Red Flag : A company with exclusively 5-star reviews and no reviews older than 12 months should be approached with caution. Authentic review profiles accumulate gradually over time and include occasional 3 or 4-star reviews. A sudden cluster of identical 5-star reviews with very short, generic text is a common sign of fabricated reviews. |
Step 5 – Get at Least 3 Written, Itemised Quotes
Getting multiple quotes is one of the most important things you can do – not just to find the lowest price, but to understand what is and is not included in each quote.
How Many Quotes Should You Get?
For a bathroom renovation, get a minimum of three written quotes. This gives you a realistic price range, identifies outliers on both the high and low end, and gives you meaningful leverage if you want to negotiate.
What Every Quote Must Include
A genuine, professional quote for a bathroom renovation should be fully itemised and include every element separately. Here is what to look for:
| What the Quote Must Show | Why It Matters |
| Labour – by trade (plumber, waterproofer, tiler, electrician separately) | So you can see exactly what each trade costs and spot if anyone has been left out |
| Materials – tiles, adhesive, grout, fixtures, fittings listed individually | So you know what grade of materials is included – not just a vague ‘allowance’ |
| Waterproofing – listed as a separate line item | Waterproofing is legally required – if it is not listed separately it may not be budgeted properly |
| Demolition and waste removal | Often excluded from quotes — a $300 to $800 surprise on handover day |
| Compliance and certification fees | Plumbing and waterproofing compliance certificates have fees – these must be included |
| GST – clearly noted whether included or not | A quote ex-GST looks 10% cheaper than it is – always confirm |
| Payment schedule – deposit, progress payments, final payment | A legitimate renovator will not ask for more than 10 to 20% upfront as a deposit |
| Warranty terms – what is covered and for how long | A quality renovator offers a minimum 6-year structural defect warranty in most states |
| ✅ Pro Tip : If one quote is significantly cheaper than the others – more than 20 to 25 percent lower – it almost always means something is missing. Ask for a line-by-line comparison against the other quotes. Common omissions include waterproofing, waste removal, compliance certificates, and electrical work. A cheap quote that excludes these items will end up costing more than the mid-range quote that included them. |
Step 6 – Ask These Questions Before You Sign Anything
Before you commit to any bathroom renovator, ask these questions directly. A quality renovator will answer every single one without hesitation. One who cannot or will not answer them is telling you something important.
| Question to Ask | What a Good Answer Looks Like |
| Can I see your current builder’s or renovation licence? | They give you the number immediately and encourage you to verify it |
| Do you carry public liability insurance and can I see the certificate? | They provide a current certificate of currency without delay |
| Will your waterproofing work be done by a licensed waterproofer? | Yes – and they name the specific waterproofer and their licence number |
| Will you issue a waterproofing compliance certificate? | Yes – this is legally required in most states and a non-negotiable |
| Who will be on site managing the renovation day to day? | A named person – not ‘one of our guys’ or a vague answer |
| How do you handle unexpected issues found during demolition? | They explain their process for getting your approval before any additional costs are incurred |
| Can I speak with or visit a previous client whose bathroom you have renovated? | Yes – they provide a reference without hesitation |
| What does your warranty cover and for how long? | They clearly explain what structural defects, waterproofing, and workmanship are covered |
| What is your payment schedule? | Deposit of 5 to 20%, progress payments tied to completed stages, final payment on handover |
| What happens if the project runs over time? | They explain their process – communication, timeline updates, and accountability |
Red Flags – Walk Away If You See Any of These
After reviewing hundreds of bathroom renovation disputes and complaints in Australia, these are the warning signs that most consistently predict a poor outcome. If you see any of these, do not proceed – regardless of how good the price looks.
Red Flags in the Initial Conversation
- Refuses to provide a licence number or certificate of currency for insurance
- Cannot name a specific licensed waterproofer who will do the waterproofing work
- Gives you a verbal quote only and is reluctant to put it in writing
- Pressures you to sign a contract or pay a deposit immediately – ‘this price is only available today’
- Cannot show you photos of recent completed bathrooms or provide a reference
Red Flags in the Quote
- Waterproofing is not listed as a separate line item
- The quote asks for more than 20 percent as a deposit before any work starts
- No payment schedule is specified – just a lump sum with no stages
- No warranty is mentioned or only a vague verbal warranty is offered
- The quote is more than 25 percent cheaper than every other quote you received
- GST is not clearly stated as included or excluded
Red Flags During the Renovation
- Tradespeople arrive on site without being introduced or explained to you
- The renovator is difficult to contact or slow to respond to questions
- Work proceeds out of sequence – tiling before waterproofing has cured
- You are asked for additional money outside the agreed payment schedule without a written variation
- Progress looks rushed – tiles not aligned, grout lines inconsistent, fixtures not level
| ⚠ If Things Go Wrong : If you believe your bathroom renovator has done unlicensed work, left the job incomplete, or produced defective work, contact your state building authority immediately. In NSW this is NSW Fair Trading, in VIC it is the Victorian Building Authority, in QLD it is the QBCC. Each state has a formal complaint and dispute resolution process. Always document everything with photos and keep copies of all written communications. |
Your Complete Bathroom Renovator Checklist
Use this checklist when evaluating any bathroom renovator in Australia. Tick every box before signing a contract.
| Checklist Item | Status |
| ✅ Licence verified through state authority website | ☐ Done |
| ✅ Public liability insurance certificate received and checked | ☐ Done |
| ✅ Home Warranty Insurance confirmed (if project meets state threshold) | ☐ Done |
| ✅ Portfolio of completed bathrooms reviewed | ☐ Done |
| ✅ At least one reference contacted and spoken to directly | ☐ Done |
| ✅ Reviews checked across Google, Houzz, and hipages | ☐ Done |
| ✅ Minimum 3 written, itemised quotes received | ☐ Done |
| ✅ Waterproofing listed as separate line item in the quote | ☐ Done |
| ✅ Licensed waterproofer named and their licence confirmed | ☐ Done |
| ✅ Payment schedule reviewed – deposit is 20% or less | ☐ Done |
| ✅ Warranty terms confirmed in writing | ☐ Done |
| ✅ 10 key questions asked and answered satisfactorily | ☐ Done |
| ✅ No red flags identified in the quote or initial conversation | ☐ Done |
| ✅ Contract signed – no work started before contract is in place | ☐ Done |
Frequently Asked Questions
Here are the most common questions Australian homeowners ask when choosing a bathroom renovator.
Final Thoughts
Choosing the right bathroom renovator in Australia comes down to doing a small amount of careful research upfront – and not letting an attractive price override the fundamentals.
Check the licence. Confirm the insurance. Get three written, itemised quotes. Ask the ten questions. Look for red flags. Use the checklist. And never pay more than 20 percent upfront before work starts.
A renovator who ticks every box on that list is one you can trust with one of the most important rooms in your home. One who cannot tick those boxes – however friendly, however cheap – is a risk that is simply not worth taking.
For more practical guides to help you plan and budget your bathroom renovation, explore our bathroom renovation articles including our full bathroom renovation cost guide, our plumber cost guide, and all our home improvement resources for Australian homeowners.
