Bathroom renovation cost in Brisbane

The honest starting point

What bathroom renovations actually cost in Brisbane

Bathroom renovation pricing is not a single number. It is the sum of demolition, substrate repair, plumbing, electrical, waterproofing, tiling, joinery, glazing, fixtures, painting and project management. Two bathrooms of the same size can differ by tens of thousands of dollars because one retains the layout and the other moves the toilet, replaces the floor structure and upgrades every finish.

The ranges below are planning guides for Brisbane homes. They assume a licensed builder, a written scope, AS 3740 waterproofing and a normal level of site access. They are not quotes, and they are not a promise that your project will fall inside the band. A site inspection is the only way to price the room you actually have.

Indicative ranges only. Read the assumptions below and use the cost calculator for an interactive estimate.

What drives the price

1. Room size and tiling area

Tiling area is often more important than floor area. A small bathroom with full-height wall tiles, a shower niche and a mitred feature wall can involve more tiling than a larger room with a standard splashback. Waterproofing area, screeding, adhesive and labour all scale with the surfaces being prepared and finished.

2. Layout changes

Keeping the toilet, shower and vanity in their existing positions is the single biggest cost saver. Moving a waste or supply line depends on joist direction, fall, stack access and whether the floor is timber or slab. A layout change can add plumbing, carpentry, waterproofing and tiling work, and it may require building approval or body corporate consent.

3. Substrate and hidden damage

Older Brisbane bathrooms frequently hide water damage. Failed sheeting, rotting studs, compromised floor boards, illegal past work and undersized exhaust ducting are common. We cannot see all of it until the room is opened, which is why a provisional allowance is more honest than a fixed price that ignores the risk. We photograph the damage and agree the repair before proceeding.

4. Finish level

Entry-level porcelain, a framed screen and a standard vanity cost far less than large-format rectified tiles, a frameless screen, stone tops, wall-hung joinery, brushed nickel tapware and niche lighting. The labour to install premium finishes is often higher because tolerances are tighter and the details take longer.

5. Plumbing and electrical scope

A like-for-like replacement of tapware and fixtures is straightforward. New circuits, heated towel rails, underfloor heating, exhaust ducting through a roof space, three-in-one bathroom units and relocated lighting add design, labour and compliance work. Electrical and plumbing must be completed by licensed trades and documented.

6. Access and building type

Ground-floor homes with a driveway are the simplest. Apartments add body corporate approvals, lift bookings, protection of common areas, parking permits and restricted work hours. Queenslanders on steep blocks may need extra staging, waste removal planning and structural investigation. These costs are real and should be visible in the quote.

7. Ventilation

Brisbane's humidity makes ventilation a functional requirement, not an optional extra. An externally ducted exhaust fan sized for the room, with a quality backdraft shutter and a clean duct run, costs more than a ceiling-mounted recirculating unit. It also protects the building from condensation and mould, which is far more expensive to remediate later.

8. Programme and lead times

Tiles, tapware, vanities, screens and custom joinery can have lead times of several weeks. If a project is rushed, the wrong product may be substituted or the programme may stall. We confirm lead times before demolition and build realistic cure times into the schedule. A fast programme that ignores waterproofing cure is not a saving.

How the budget is typically distributed

The exact split depends on the scope, but a full bathroom renovation generally follows a pattern. This is a useful sanity check when a quote looks unusually low in one area and unusually high in another.

Essential, mid-range and premium

Hidden costs to plan for

• Asbestos. Homes built before the late 1980s may contain asbestos in sheeting, adhesives or lagging. Testing and licensed removal are separate costs.
• Water damage and rot. Replacing studs, floor sheeting or framing is additional work that cannot be confirmed until strip-out.
• Illegal or non-compliant past work. Previous DIY plumbing, electrical or waterproofing may need to be corrected before the new work can proceed.
• Body corporate and building approvals. Fees, reports, lift bookings and work-hour restrictions apply in many apartment buildings.
• Temporary bathroom arrangements. If you have only one bathroom, you may need a temporary toilet, gym membership or alternative arrangement.
• Product upgrades. Changing tile, tapware or vanity selections after the contract is signed can add cost and delay.
• Make-good beyond the room. Painting, architraves, ceiling repairs and flooring outside the bathroom may be affected by the work.

How to compare bathroom quotes

Do not compare totals in isolation. Put the quotes side by side and check whether each one includes the same scope. A quote that is $5,000 cheaper may simply exclude waterproofing, screeding, the shower screen or waste removal. Those items still have to be paid for, usually after you have committed.

Where to save and where not to

You can save by retaining the layout, choosing standard-size tiles, buying a quality off-the-shelf vanity, limiting niche and feature work, and renovating the bathroom and laundry together to reduce mobilisation. You can also save by supplying your own fixtures if you accept the lead-time and warranty risk.

Do not save on waterproofing, substrate preparation, ventilation, plumbing and electrical compliance, or the quality of the shower screen and tapware cartridges. These are the parts that cause failures, insurance disputes and repeat work. A cheap membrane or an undersized fan is not a bargain.

Payment, contracts and consumer protection

Queensland domestic building work is governed by a written contract that sets out the scope, price, payment stages, variations and completion process. We do not ask for large cash deposits or payments unrelated to progress. If your project requires QBCC home warranty insurance, we will explain whether it applies and how it is arranged before work starts.

Read the contract before you sign it. Check the licence name and number, the scope, the allowances, the exclusions and the process for resolving a dispute. A professional builder will not rush you through this step.

Get a quote for your actual room

The ranges on this page are useful for planning, but they cannot account for the condition of your substrate, the access to your property or the finishes you have in mind. An on-site measure takes about an hour and gives you a written scope you can compare properly. Call us or request a quote and we will arrange a time.