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Frequently Asked Questions

Bathroom Renovation FAQs — Costs, Timelines, Compliance and What to Expect

The questions every homeowner asks before they commit. Answered straight.

You're not at the 'just browsing' stage any more. You want to know what this actually costs, whether you'll need permits, and how to spot a dodgy tradie before handing over a deposit. Every question worth asking is answered below.

Costs & Budgeting

Budget end — new fixtures, fresh tiling, updated vanity, nothing structural — runs $8,000 to $15,000. Mid-range, with quality tapware, a frameless shower screen and full retiling, sits between $15,000 and $25,000. Custom bathrooms with feature tiles, freestanding baths and high-end joinery push well past $25,000.

What actually drives the spread: condition of the waterproofing membrane underneath, whether the plumbing waste stays put, and your fixture choices. Move a toilet or relocate a floor waste and trade time climbs fast.
Waterproofing membrane upgrades when the existing substrate is compromised. Asbestos removal in pre-1990 homes, which is a separate licenced process. Structural wall changes if your layout needs load-bearing work. Fixture delivery fees, which some contractors bury or leave out altogether.

Before you sign, get written confirmation that the quote covers demolition waste removal, subfloor rectification found during demo, and the waterproofing inspection.
Yes, but the return isn't dollar-for-dollar. A solid mid-range renovation typically adds 60 to 80 cents for every dollar spent — so a $20,000 bathroom might move the sale price by $12,000 to $16,000. The return is better when the existing bathroom is visibly dated or water-damaged.

For rentals: keep it functional, clean, and photographable. A freestanding bath in a two-bedroom unit doesn't justify the price tag.
Vague briefs produce vague quotes. Give the renovator: bathroom dimensions, photos of the current layout (including where the floor waste and plumbing sit), your fixture preferences or budget range, and a straight answer on whether the plumbing is moving or staying.

If you've already chosen specific tiles or a vanity, include the product codes. A renovator who quotes without asking any of this is pricing on assumptions — and assumptions become variations.
You can, but you carry the risk. Colour variance in a tile batch, a damaged tapware delivery, running short mid-install — any of those become your problem to resolve while the tradies are still on the clock.

If you're sourcing your own materials: order at least 10% extra on tiles, lock in lead times before work is scheduled, and have everything on-site before demolition starts.

Not sure what your renovation will cost?

Get a quote that breaks down every line item — waterproofing, labour, fixtures, trades. No ballpark figures.

Request a Free Quote

Timeline & Project Planning

Trades on-site for a full gut-and-rebuild: two to three weeks. That's demolition, rough-in plumbing and electrical, waterproofing and inspection, tiling, fixture installation, final fit-off.

The part most people don't budget for is lead time. Tiles on a four-week delivery. Vanities on backorder. Frameless screens fabricated to measure. Add it up and the real timeline — from contract sign-off to handover — is typically six to ten weeks.
Two things. Late materials and surprises under the tiles.

Late materials is entirely preventable — lock in your tiles, vanity, tapware and screen before work starts, not after the bathroom's already demolished. The second is harder to control. Demo opens up walls and floors, and sometimes what's underneath isn't what anyone expected. A renovator who builds schedule contingency for this is being honest with you.
For most jobs, yes. But if you've only got one bathroom, you need a plan before work starts. Some renovators will stage the work to keep a toilet accessible. Some push hard through the first week so you're without facilities for a few days. A handful of clients book accommodation for the roughest stretch.

Whatever you agree on, get it confirmed in writing. 'We'll try to keep the toilet going' is not a schedule item.
October through February is peak season for trades in NSW and ACT. Book in autumn or winter and you'll usually get a faster start date, less schedule pressure, and sometimes sharper pricing.

Temperature also matters for waterproofing cure times — most membrane products perform best between 15 and 25 degrees. Not a dealbreaker either way, but your renovator should be specifying the right product for conditions rather than just using whatever's in the van.
Without a contract clause, your leverage is limited. 'Reasonable time' under the Home Building Act is the fallback, and that's a slow argument in a dispute.

A signed contract should include a completion date, a written process for the renovator to notify you of delays, and agreed consequences if that date is missed without cause. If a contractor resists putting a completion clause in writing, that's worth knowing before you hand over a deposit.

Licensing, Compliance & Permits

Yes. Plumbing, drainage, electrical, gas, structural work — all of it requires a licenced tradesperson in NSW. Unlicensed work voids your home insurance, creates liability that follows you at sale, and disqualifies you from Home Building Compensation if the project goes sideways.

Any renovation company managing multiple trades should hand over individual licence numbers without being asked twice. If they can't, or won't, that's the answer. Learn more about contractor licensing →
Most standard bathroom renovations in NSW are exempt development — same footprint, same wet area location, no structural changes, no DA required.

It gets more complicated when you're moving plumbing, altering a load-bearing wall, adding a skylight, or working on a heritage-listed property. Your renovator should confirm the development status for your specific job upfront. NCC bathroom standards →
HBC insurance is mandatory in NSW for residential building work where the contract exceeds $20,000. The contractor takes it out before accepting a deposit — not you.

It protects you if the contractor goes insolvent, dies, disappears, or loses their licence. Without it, you have no recourse against the Guarantee Fund if the job is abandoned. Ask for the certificate before paying any deposit on a job over $20,000. More on HBC insurance →
Go to the NSW Fair Trading licence register at fairtrading.nsw.gov.au. Enter the contractor's licence number, confirm it's current, check the class covers the work, and look for any conditions or suspensions.

A legitimate tradie hands you their licence number without prompting. A company registration is not a builder's licence — ask for individual trade licence numbers for each person on the job. NSW Fair Trading verification →
Licensing in the ACT is managed by Access Canberra under the Construction Occupations (Licensing) Act 2004. There's no single renovation licence — building work, plumbing, drainage, electrical, and gas fitting each have separate licence classes.

Plumbing and electrical must always be done by a licenced contractor, regardless of who owns the property. Check Access Canberra's register before work starts. ACT licensing requirements →

Why homeowners trust Lifestyle Bathrooms

✓  Licenced under NSW Fair Trading — all trades verified

✓  HBC insurance confirmed on every eligible project

✓  AS3740 waterproofing compliance standard met on every build

✓  All trades hold current individual licences

✓  Mandatory waterproofing inspections on every wet area

Waterproofing & Australian Standards

Because when it fails, you don't find out straight away. Water gets behind the tiles, into the substrate, into the framing — slowly, over months or years — before anything visible appears. By the time there's a damp patch on the wall next door, the damage is already expensive.

Defective waterproofing is also a statutory warranty issue in NSW. The liability doesn't expire when you sell — it follows the property for up to six years after the renovation is complete. AS3740 waterproofing standards →
AS3740 is the Australian Standard for waterproofing in domestic wet areas. It specifies membrane types, minimum application thicknesses, coverage zones, and upstand heights at junctions.

The National Construction Code references AS3740 as the compliance pathway — making it effectively mandatory for all residential bathroom work in Australia. Not meeting AS3740 means not meeting the NCC. Any renovator who can't explain their waterproofing spec in relation to AS3740 is not who you want doing your wet areas. Read the AS3740 guide →
Yes, and this is non-negotiable. In NSW, waterproofing is a mandatory hold point. A certifier must inspect and sign off on the membrane before a single tile goes down.

If your renovator is moving fast and tiles are going down without an inspection — stop the job. A tiled bathroom with no waterproofing inspection record has no compliance history if a defect claim arises later. Building codes and compliance →
Applied correctly to AS3740, a membrane should hold up for 10 to 15 years under normal residential use. That assumes the right product for the substrate, junctions properly formed, and membrane applied to the correct thickness throughout.

When it fails, the fix isn't a patch — it's ripping out the tiles and starting the wet area again.
AS3740 defines two zones. Zone 1 is direct water contact: shower floor and shower walls to at least 1800mm. Full membrane coverage required, no gaps. Zone 2 is the splash zone outside the shower — bathroom floor, bath surrounds, wall areas with intermittent water contact.

Most waterproofing failures happen at the junctions — floor-to-wall, wall-to-wall, around the floor waste, around pipe penetrations. Not in the middle of the membrane. At the edges. A proper spec addresses every junction explicitly. AS3740 zone requirements →

The Renovation Process — What Actually Happens

Design and scope sign-off → materials on order → demolition → rough-in (plumbing and electrical) → substrate prep → waterproofing membrane → waterproofing inspection → floor tiles → wall tiles → fixtures installed → final fit-off → silicone and grouting → defects check and handover.

The inspection in the middle is the one that trips up schedules. Work stops. An inspector attends. Work resumes only after sign-off. Build contingency around this — inspection timings aren't fully in the renovator's control. Building codes and hold points →
A renovation specialist or builder coordinates the plumber, electrician, tiler and waterproofer — sequencing trades, managing hold points, keeping the schedule moving.

Hiring trades directly to cut costs makes you the project manager. Scheduling conflicts, defect disputes where each trade points at the other's work, no single party accountable for the outcome — it's a harder path than it looks for a job with this many compliance dependencies.
Wall tiles come off first, then the vanity, shower screen or bath, wet wall linings, floor tiles, and finally the floor waste. The order matters — pulling wall linings before floor tiles can damage the floor waste junction.

A good renovator looks at what can stay before pricing. If the floor waste position suits the new layout, keeping it cuts plumbing labour and avoids disrupting the substrate. Every trade element you don't move saves time on the rough-in.
Yes. And your choices directly affect the schedule, so make them early.

Popular tiles can run four to eight weeks at major suppliers. Custom vanities, particular tapware finishes, frameless screens made to measure — longer. Get a selection deadline from your renovator at the start. If fixtures aren't confirmed before demolition, you're gambling that what you want is in stock when you need it.
A signed contract with: detailed scope of works, fixed or capped price with a written variation process, payment schedule tied to completion stages (deposits capped at 10% for jobs under $20,000 in NSW), completion date with delay notification clause, and warranty terms.

Under the Home Building Act 1989, a written contract is legally required for work over $5,000. If a contractor wants to start on the strength of a one-page quote and a handshake, ask for the contract. If they won't produce one, find someone who will. NSW Fair Trading contract requirements →

Choosing the Right Renovator

Six. Ask every one of them.

• What's your licence number — NSW Fair Trading or Access Canberra?
• Is this job eligible for HBC insurance, and will you confirm it's in place before I pay a deposit?
• Who does the waterproofing, and will there be a formal inspection before tiling?
• Do you use subcontractors? Are they individually licenced for their trade?
• How do variations get handled — written process, or costs just added on?
• Can I speak to someone whose bathroom you finished in the last six months?

A contractor who answers all six without hesitation is a different category from one who deflects or gets defensive about the licence question. Contractor licensing guide →
Three. Fewer and you don't have a range. More and you're just adding admin.

The number matters less than consistency. If all three quotes aren't pricing the same scope, you're not comparing three bathrooms — you're comparing three interpretations of a vague brief. Write it out. Send the same brief to all three. Then the numbers actually mean something.
Cash-only pricing. No written contract offered. Can't hand over a licence number. Deposit request above 10% before work starts. No mention of waterproofing inspections anywhere in the quote or conversation. Pressure to start immediately before you've had time to read anything.

One of those — maybe. Two or more and you're on a path NSW Fair Trading and the Civil and Administrative Tribunal see play out repeatedly. The homeowners lodging those complaints had a list of warning signs they talked themselves out of. Report a building dispute →
Not automatically. But when a quote comes in 30% or more below the others, something's usually missing from scope.

The most common gaps: waterproofing membrane priced to a basic spec when the substrate needs more, no allowance for waste relocation, no contingency for subfloor damage found during demo. Ask the low-quoting contractor to walk you through their waterproofing specification and variation process. That's where the savings go.
Under the Home Building Act 1989 (NSW), statutory warranties apply automatically. Six years for major defects. Two years for general defects. Both run from completion — not from when you first spot the problem.

Waterproofing failure is a major defect. A claim on a failed membrane four years after handover is still within the statutory period. Your contract should also include the contractor's own workmanship warranty on top of that. Any contractor claiming the statutory warranty doesn't apply to their work is wrong. Home Building Compensation insurance →