If you are hiring a tiler in Adelaide, the short answer is that pure wall and floor tiling on its own does not require a building work contractor's licence in South Australia. The catch is that the parts of the job that most often go wrong, waterproofing and larger renovation work, sit under rules that Consumer and Business Services does enforce.
That gap trips up a lot of homeowners. This guide explains the licensing reality in plain terms, separates tiling from waterproofing, and shows you exactly how to verify a tradesperson before you let them near your bathroom. It sits within our pillar on Choosing and Hiring a Tiler in Adelaide.
The licensing reality for tiling in SA
Tiling is what SA law treats as a "prescribed trade" in some contexts, but there is no standalone "tiler's licence" you can point to the way there is for a plumber or an electrician. Wall and floor tiling by itself is generally not licensed work in South Australia.
That surprises people, because it feels like it should be. The reason is that laying tiles, on its own, is a finishing trade rather than a regulated building service. So a skilled tiler who only lays tiles and does no waterproofing can legitimately operate without a building work contractor's licence.
Where it changes is when the tiling is bundled into a bigger job:
- If the tiling is part of a building or renovation contract over the Consumer and Business Services (CBS) threshold, that contract needs a licensed building work contractor.
- If the job includes waterproofing a wet area, that specific work is regulated building work.
- If the tiler is contracting the whole bathroom (removal, plumbing coordination, waterproofing, tiling), they are doing building work and licensing applies.
So the honest position is this: the tiling itself may not need a licence, but the wet area work almost always does, and most bathroom jobs are not "just tiling".
Tiling versus waterproofing: where the line really sits
This is the single most important distinction on the page, so it is worth being precise.
| Type of work | Licensed in SA? | Why it matters | | --- | --- | --- | | Wall and floor tiling only | Generally no standalone licence required | Finishing trade, quality is about skill not paperwork | | Waterproofing a wet area | Yes, when part of regulated building work | Must meet the NCC and AS 3740, a failure floods the room below | | Full bathroom under contract | Yes, needs a building work contractor's licence | Coordinates trades, carries the warranty | | Structural or major renovation | Yes | Building work over the CBS value threshold |
Waterproofing is the part that keeps building surveyors and insurers awake at night. A wet area has to be waterproofed to the National Construction Code and Australian Standard AS 3740 before a single tile goes down. Get it wrong and water tracks into wall cavities, subfloors and the room next door, and the repair means tearing out finished tiling and starting again.
That is why waterproofing on a proper quote is nearly always itemised, usually $500 to $1,500 for a wet area. If a quote for a full bathroom does not mention waterproofing at all, treat that as a red flag rather than a saving. It is one of the classic dodgy tiler red flags worth walking away from.
What Consumer and Business Services actually requires
Consumer and Business Services (CBS) is the SA government body that regulates building work and issues building work contractor's licences. Their rules are built around the value and type of the work, not the trade name on the van.
In practical terms, for a tiling-related job in Adelaide:
- Building work over the CBS value threshold must be carried out under a building work contractor's licence. That threshold sits at a modest dollar figure, so most full bathroom renovations are well above it.
- The person supervising the building work must hold the appropriate registration, not just the business.
- A written contract is required for domestic building work over a set value, which protects you as the homeowner.
- Waterproofing performed as part of that building work falls under the licensed contractor's responsibility.
The nuance that catches people out: a tiler laying tiles as a subcontractor under a licensed builder does not personally need to hold the head licence, because the licensed builder carries it. But if that same tiler quotes you directly for the whole bathroom, they now need to be licensed themselves, because they are the contractor.
If you are weighing up quotes and not sure which situation applies, our guide on how to choose a tiler in Adelaide walks through the questions that make this obvious fast.
How to verify a tiler before you hire
You do not need to take anyone's word for it. Checking a tradesperson in SA is quick, free and worth the few minutes.
- Search the CBS licensing public register. Go to sa.gov.au and search the person or business name in the building and trades licence check. It shows whether they hold a current building work contractor's licence and any conditions on it.
- Ask who is doing the waterproofing. Get a name and confirm that person or their contractor is licensed for the wet area work. Ask for the waterproofing to be documented, including the product used and a compliance certificate where applicable.
- Get it in writing. For any decent-sized job, a written contract or detailed quote is your protection. It should itemise waterproofing separately from tiling.
- Check insurance, not just licensing. Licensing and insurance are two different things, and you want both. Public liability and the right cover protect you if something goes wrong, which we cover in does your tiler need insurance?.
If a tiler is cagey about any of these, that tells you something. A good operator expects to be checked and has nothing to hide.
The bottom line for Adelaide homeowners
Do tilers need a licence in SA? For pure tiling, often not. For the waterproofing and the contracting that come with almost any real bathroom or wet area job, yes, and that is exactly where the risk lives if it is skipped.
The safe path is simple: make sure the wet area work is handled by someone licensed, documented and insured, and verify it yourself on the CBS register before money changes hands. You do not have to become an expert in building law to do this well, you just have to hire people who take it seriously.
Get matched with tilers who tick the boxes
We only refer homeowners to vetted licensed and insured Adelaide tilers whose credentials we have checked, so you are not left doing all the digging on your own. When your job involves a wet area, that vetting matters more than anything else on the quote.
Tell us about your job and we will connect you with trusted local tilers who will quote it properly, waterproofing included and itemised, free and with no obligation. Get started here.