As of October 2026, a basic full bathroom renovation in Sydney costs about $11,500 to $23,000, according to What’s The Damage, while a cosmetic refresh that keeps the layout and existing waterproofing can cost much less. National guides put a refresh at about $5,000 to $12,000 (What’s The Damage) or $8,000 to $15,000 (hipages figures via Savings.com.au). The safest savings come from keeping the layout and choosing budget fittings, never from cutting waterproofing.
- A basic full bathroom renovation in Sydney costs about $11,500 to $23,000 (What’s The Damage, October 2026).
- A cosmetic refresh only makes sense when the existing waterproofing, tiles and plumbing are sound.
- Keeping the shower, toilet and vanity where they are is the biggest saving in any bathroom.
- Never cut waterproofing: in NSW it needs a licensed contractor on jobs over $5,000 including GST, and failed waterproofing is a major defect.
- Keep a contingency of 10 to 15 per cent for hidden problems such as rotten framing or failed membranes.
How much does a budget bathroom renovation cost in Sydney?
As of October 2026, a basic full bathroom renovation in Sydney costs about $11,500 to $23,000, according to What’s The Damage’s Sydney guide. That buys a full strip-out with budget fittings and the same layout.
A cosmetic refresh costs less, but the published figures do not agree. What’s The Damage’s national budget breakdown gives $5,000 to $12,000 in one table and $3,000 to $8,000 for a lighter refresh in its FAQ. hipages figures reported by Savings.com.au (January 2026) put a budget or cosmetic job at $8,000 to $15,000. Those are national figures, so Sydney prices may sit towards the top.
For full price ranges by size and finish, read our guide Bathroom Renovation Cost Sydney: 2026 Price Guide.
Cosmetic refresh or full strip-out: which one do you need?
Choose a cosmetic refresh when the room has no leaks and the tiles are firm. Choose a full strip-out when the waterproofing has failed, the tiles are drummy or cracked, or you want to change the layout.
| Cosmetic refresh | Full strip-out | |
|---|---|---|
| What is replaced | Vanity, tapware, toilet, mirror, lights, paint, silicone; sometimes regrout | Everything back to the frame or slab: sheeting, waterproofing, screed, tiles, fixtures |
| Indicative cost | $3,000 to $15,000 nationally (sources differ) | From about $11,500 to $23,000 in Sydney for a basic job |
| Time on site | 3 to 5 days (What’s The Damage budget breakdown) to 2 to 3 weeks (its timeline guide) | About 3 to 5 weeks for a standard bathroom |
| Waterproofing | Existing membrane kept, so it must be sound | New membrane installed and documented |
| Best for | Dated but watertight bathrooms | Leaking, drummy, very old or badly laid-out bathrooms |
| Main risk | Spending money on top of a hidden leak | Higher upfront cost and longer without a bathroom |
Sources: What’s The Damage Sydney bathroom guide, budget breakdown and timeline guide (October 2026); hipages figures via Savings.com.au (January 2026). Indicative only.
When is a cosmetic refresh enough?
A refresh is enough when the bathroom is watertight and the surfaces underneath are sound. What’s The Damage says a refresh suits bathrooms with sound waterproofing and structure, and that refreshing rather than rebuilding can save about half.
Before you commit, check for these warning signs:
- Hollow-sounding (drummy) or loose tiles on the floor or walls.
- Mould, bubbling paint or swollen skirting outside the shower.
- Water stains on the ceiling below an upstairs bathroom.
- Grout that keeps cracking or going black soon after cleaning.
If you see any of these, ask a waterproofer to investigate before buying a new vanity. Our guide Leaking Shower Repair Sydney explains how to find the cause.
Where can you save money on a bathroom renovation?
The biggest savings come from decisions made before work starts, not from cheaper trades.
- Keep the layout: moving fixtures adds plumbing and re-waterproofing. Sydney plumbing rough-in alone runs about $2,300 to $5,750 (What’s The Damage).
- Choose budget fittings: What’s The Damage puts basic vanities at about $500 to $1,500, against $1,500 to $3,500 for premium ones.
- Buy off the shelf: a standard-size vanity avoids the 4 to 8 week lead time that What’s The Damage gives for custom vanities.
- Choose ceramic or porcelain over stone: Sydney tile supply runs about $20 to $55 per m² for budget ceramic and $50 to $120 for mid-range porcelain, against $100 to $250 for natural stone (What’s The Damage, October 2026).
- Use feature tiles sparingly: one feature wall or niche costs far less than a whole room of mosaics.
- Regrout instead of retiling: if the tiles and membrane are sound, Airtasker’s price data (October 2026) puts a regrouting job at about $281 to $640, with a median of $449.
- Lock in your selections early: changes after demolition are expensive and slow.
- Keep what still works: a sound bath, a modern toilet or a good mirror cabinet can often stay.
- Ask for one builder to coordinate: What’s The Damage’s small-bathroom guide suggests bundling trades under one builder, which can cut the gaps and repeat visits between stages.
- Get three itemised quotes for the same scope, so you are comparing like with like.
Where should you never cut corners?
Never cut waterproofing, licensed plumbing and electrical work, or the time the membrane needs to cure. These are the parts you cannot see once the tiles go on, and they are the most expensive to fix.
- Waterproofing: it must meet the NCC and AS 3740 in every bathroom. What’s The Damage warns that a quote well below basic-tier pricing should prompt questions about which compliance steps are being skipped.
- Cure time: the membrane must dry for the time on its data sheet before tiling. Rushing it can trap moisture and damage the membrane.
- Falls to the waste: a floor that does not drain properly leads to ponding and leaks. The NCC sets falls of 1:80 to 1:50 to a floor waste.
- Ventilation: an exhaust fan that vents outside protects your new finishes from mould.
- Contingency: What’s The Damage recommends 10 to 15 per cent for surprises such as rotten framing, asbestos or failed waterproofing.
In NSW, waterproofing worth more than $5,000 including GST needs a contractor with a waterproofing licence, and the Building Commission NSW lists waterproofing as an example of a major defect, which carries a 6-year statutory warranty. Ask who will install the membrane, check their licence on Verify NSW, and get the waterproofing certificate before the tiles go on.
Budget bathroom renovation ideas that make a big difference
Small changes can make a dated bathroom feel new without touching the waterproofing. hipages figures reported by Savings.com.au (January 2026) give these national guide prices:
- New tapware: about $100 to $1,500, depending on the range.
- New framed shower screen: about $250; semi-frameless or frameless screens about $200 to $700.
- Vanity installation: about $500 to $1,400.
- Painting a small bathroom of about 6.5 m²: about $150 to $350 (Services.com.au figure quoted by Savings.com.au).
Other low-cost upgrades include new lighting, a larger mirror, fresh silicone, new towel rails and hooks, and a better exhaust fan. Plumbing and electrical changes, even small ones, must be done by licensed trades.
How do you compare cheap bathroom renovation quotes?
Compare scope, not just the total. The cheapest quote is often the one that leaves something out.
- Is demolition, waste removal and skip hire included?
- Who installs the waterproofing, which membrane will be used, and is a certificate included?
- Are tiles, adhesive, grout, trims and silicone supplied, or is it labour only?
- Are the plumber and electrician included, and are they licensed?
- What happens if rotten framing or asbestos is found? Ask how variations are priced.
NSW rules still apply to budget jobs:
- Licence: in NSW, residential building or trade work worth more than $5,000 in labour and materials (including GST) needs a contractor licence for that type of work. This includes waterproofing, wall and floor tiling, and kitchen, bathroom and laundry renovation.
- Contract: jobs over $5,000 including GST need a written contract. Jobs over $20,000 need a more detailed contract and give you a cooling-off period of five clear business days.
- Deposit: the most you can be asked to pay as a deposit is 10 per cent of the contract price.
- Licence check: look up every trade on Verify NSW (verify.licence.nsw.gov.au). Check the name, licence class, expiry date and status match the business on your quote.
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Frequently asked questions
What is the most expensive part of a bathroom renovation?
Tiling is usually the largest single line item. What’s The Damage’s national budget breakdown (October 2026) puts floor and wall tiling at about 20 to 22 per cent of a $27,000 mid-range renovation, followed by plumbing and fixtures. Moving the layout adds the most unexpected cost, because it changes plumbing, waterproofing and sometimes framing.
Can I replace a vanity without retiling the bathroom?
Usually, yes, if the new vanity covers the same footprint as the old one. Tiles often stop behind or under an old vanity, so a smaller or wall-hung vanity can leave a gap. Measure the old vanity’s footprint and check what is behind it before you buy. A licensed plumber must connect the new basin and waste.
Is it cheaper to renovate a bathroom yourself?
You can save on tasks such as painting, removing accessories and choosing fittings. But plumbing and electrical work must be done by licensed trades in NSW, and poor waterproofing is a common cause of leaks. Mistakes under the tiles are costly to fix, so most owners leave demolition, waterproofing and tiling to professionals.
How much contingency should I allow for a bathroom renovation?
What’s The Damage recommends keeping 10 to 15 per cent of your budget aside for surprises, such as rotten framing, asbestos in an older home or failed waterproofing found during strip-out. On a $20,000 job, that is $2,000 to $3,000. Agree in writing how variations will be priced before work starts.
Do cheap bathroom renovations still need a contract?
Yes, if the job is worth more than $5,000 including GST. NSW law requires a written contract above that amount, and the deposit cannot be more than 10 per cent. For jobs over $20,000 you also need a Home Building Compensation certificate before paying anything, and you get a five business day cooling-off period.
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