Three steps to hiring the right bathroom fitter
First, ask to see photos of similar completed jobs, ideally local ones. Second, clarify exactly who does the electrical and plumbing work — the fitter directly, or a subcontracted registered tradesperson. Third, get a written quote that separates labour, fixtures and tiling.
Background checks and identity verification
Since bathroom fitting isn't gated by a single mandatory certification the way gas or electrical work is, checking trading history, a verifiable business address, and reviews referencing specific completed jobs matters more here than for some other trades.
Choosing a bathroom suite
A close-coupled toilet is the standard, affordable choice. A wall-hung toilet looks sleeker and is easier to clean around but needs a concealed cistern built into the wall, adding cost and reducing space behind the wall for other services. Similar trade-offs apply to countertop vs inset basins.
Planning an en-suite bathroom
Adding an en-suite usually means extending plumbing and sometimes electrical circuits into a new area, and ventilation (an extractor fan, by regulation) becomes more important in a smaller enclosed space. Worth planning the layout around existing pipe runs where possible to control cost.
How bathroom fitting quotes work
Describe the current bathroom's layout and what you want changed — an initial estimate can follow, but a firm price usually needs an in-person visit, since existing pipework position and floor/wall condition significantly affect scope once work starts.
KBSA and TrustMark, what they actually mean
The KBSA (Kitchen Bathroom Bedroom Specialists Association) is the main UK trade body for the sector, though membership is limited to a few hundred companies nationally, so it's not something every bathroom fitter will have. TrustMark is a broader government-endorsed scheme covering many trades — worth asking which, if either, your fitter holds, rather than assuming either is universal.
What a good bathroom quote should include
A proper quote should specify the suite brand/model (not just "a toilet, a basin"), whether tiling and waterproofing are included, whether electrical and plumbing work is covered directly or subcontracted, and what happens if hidden pipework issues are found once the old suite is removed.
Bathroom plumbing work and WaterSafe
Moving or adding plumbing (a new shower, relocated toilet) should follow Water Fittings Regulations, the same rules a WaterSafe-registered plumber works to. If your bathroom fitter isn't a registered plumber themselves, ask who does the plumbing side and whether they're WaterSafe registered.