Does a bathroom renovation need a council plumbing permit in Queensland?

Usually not. Moving fixtures in an existing detached house is notifiable work, which needs no local government permit or mandatory inspection. Your plumber registers it with the QBCC instead. Building approval is a separate question and sits with the owner.

What is a Form 4 and do I get a copy?

Form 4 is the notice your plumber lodges with the QBCC once notifiable work is finished. You, as the person who asked for the work, should get a copy within 20 business days of the work finishing, according to the QBCC licensee guide. Keep it with your renovation records.

Does the plumber do the waterproofing?

Not by default. Waterproofing is its own licensed trade in Queensland, so ask who is doing it and whether they hold the licence. Whoever does it should issue a waterproofing certificate when the work costs more than $3,300.

Guide · 3 min read

When the plumber comes in: the stages of a bathroom renovation

Bathroom renovation stages from the plumber's side: the rough-in before the walls are lined, fixtures to choose first, and the Queensland paperwork.

Published 5 October 2026 · Updated 26 October 2026

By Jamie Vesey, licensed plumber and gas fitter

Contractor licence QBCC 15090309
Plumber's licence PD56245
Gas work licence L91819

In this article

For the plumbing, two visits matter: the rough-in before the walls are lined, and the fit-off after the tiles are down. Get the first right and the second is short.

The stages of a bathroom renovation, in order

Plan and choose fixtures. The toilet, basin, shower, mixers and vanity you pick set where the pipes go.
Demolition. Old fixtures, tiles and wall lining come out and the pipework is exposed.
Plumbing rough-in. New water and waste pipes are run to where each fixture will sit.
Wall lining. The walls are lined, with the pipework now behind them.
Tiling.
Plumbing fit-off. The toilet, basin, shower and taps are connected and tested.

First visit: rough-in, before the walls are lined

After demolition, the new water and waste pipes are run to where each fixture will sit. This is the part you cannot change later without taking the tiles back off. It is also the moment to look at the old pipework while the walls are open, because it is easy to reach now and hard to reach once it is tiled over, which is why renovation plumbing starts here.

Decide the fixtures before the pipes go in

Wall-mounted mixers and their height
In-wall or exposed cistern
Floor waste position
Vanity height and basin type

Waterproofing is a separate licensed trade

In Queensland the QBCC licenses waterproofing as its own class, and a wall and floor tiling licence also covers waterproofing for tiling. CHOICE puts it plainly: getting a fully qualified waterproofer to install the membrane is "absolutely essential".

The QBCC says a waterproofing certificate is required when the waterproofing work costs more than $3,300, and it must be issued by a licensed contractor. Ask for it before handover. For the standard behind the work, a QBCC fact sheet from May 2023 says the National Construction Code references AS 3740-2021 for wet areas.

Second visit: fit-off, after the tiles are down

Once tiling is finished, the toilet, basin, shower and taps are connected and tested. If the fixtures were chosen before the rough-in, this visit is quick. If they were changed afterwards, it is where the surprises show up. If you are buying the fixtures yourself, the QBCC says installers must make sure products are on the WaterMark Schedule of Products, and the ABCB advises asking clients to supply only WaterMark certified products. Check the mark before you buy.

The paperwork on a Queensland bathroom renovation

Plumbing and drainage work must be done by a QBCC-licensed plumber or drainer. Moving a toilet, shower or basin in an existing detached house is notifiable work. It needs no council permit or mandatory inspection, but your plumber registers it with the QBCC on Form 4 within 10 business days of invoicing. Replacing a fixture like-for-like, with no pipe changes, is minor work and needs no Form 4.

Which bathroom plumbing jobs are notifiable or minor
Job	Class	What it means
Renovating a bathroom	Notifiable	The QBCC lists additions, extensions or renovations to kitchens and bathrooms as notifiable work.
Installing or relocating a toilet, shower or basin	Notifiable	The same QBCC page lists installing new or relocating fixtures. No local government permit or mandatory inspection is needed, and the plumber registers it with the QBCC.
Installing or replacing a water heater	Notifiable	The QBCC lists electric, gas, solar and heat pump water heaters.
Repairing or replacing a fitting or fixture	Minor	The QBCC says minor work must be done by a QBCC licensee but does not need local government approval.
Unblocking a drain or repairing a broken pipe	Minor	Both are on the QBCC list of minor work.

Building approval is a separate question, and the QBCC says home owners are responsible for approvals being in place. The City of Gold Coast says minor repairs that do not affect structural or fire safety may not need approval. For anything bigger, ask the council before work starts.

Written by

Jamie Vesey, licensed plumber and gas fitter

Jamie Vesey is the licensed plumber and gas fitter who comes to the door at Vesey Plumbing Solutions. He looks after homes, rentals, strata and businesses across the Gold Coast, from the coastal suburbs to the hinterland. He works from blocked drains and hot water to gas fitting and renovation plumbing. He finds the cause first and writes the price down before any work begins.

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