Choosing taps and shower valves
A thermostatic shower valve maintains a constant temperature even if water pressure elsewhere in the house changes (someone flushing a toilet, for example) — worth the extra cost over a manual mixer valve for most households. Tap finish (chrome, brushed nickel, matte black) is largely aesthetic but affects how easily fingerprints and limescale show.
What affects the cost
Cost depends on whether pipework and electrics need moving (not just swapping fixtures in place), the tiling area, fixture quality, and whether structural changes are needed (like removing a bath for a walk-in shower). Moving a toilet's position, in particular, is one of the more expensive changes because of the soil pipe work involved.
How many quotes should you get?
Three is reasonable for most bathroom jobs. For a full refit, make sure each quote specifies the same suite brand and tile allowance, since bathroom quotes vary a lot based on fixture quality assumptions that aren't always stated upfront.
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.
Bathroom fitting in older properties
Older properties sometimes have uneven floors, narrower doorways, or pipework not originally designed for modern water pressure — a fitter working on a period property will usually assess these before quoting for anything beyond a straightforward like-for-like swap.
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.
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.
Planning bathroom storage during a refit
Built-in storage (vanity units, recessed cabinets) is far easier to plan during a full refit than to retrofit afterwards, since it often needs coordinating with tiling and plumbing runs. Worth deciding on storage needs before the layout is finalised, not after tiling is complete.