How Much Does a Luxury Bathroom Installation Cost in the UK?

What drives installation cost

Two rooms of identical size can cost very differently to install, and it almost never comes down to the installer — it comes down to how much of the work sits outside a straightforward like-for-like swap. The table below sets out the factors we see move a quote most often, roughly in order of how significant their effect tends to be. None of them are reasons to avoid a particular finish or layout; they're simply what the labour and time actually involves, so you can see where your own specification sits before the survey confirms the figure.

What a fit-only quote does and doesn't include

Fit-only pricing like ours covers labour — first and second fix, tanking, tiling and commissioning — not the bathroom suite itself. That's different from a supply-and-fit quote, where a retailer or contractor prices the whole project with sanitaryware, tiles and brassware bundled into one figure. Comparing a fit-only number directly against a supply-and-fit number without separating out the cost of goods is the single most common way people misjudge a renovation budget. When you're weighing up quotes from different sources, always ask exactly what's included — a fit-only price from us and a supply-and-fit price from elsewhere can look very different on paper while costing roughly the same once you account for what you'd be buying yourself either way.

A handful of costs are also easy to overlook when budgeting, fit-only or otherwise. Skip hire or waste removal for the old suite, tiles and rubble isn't usually part of an installation quote and needs pricing separately, particularly where limited access means waste has to be carried out by hand. Where electrical or drainage work needs notifying to building control rather than signing off under a competent person scheme, there can be a notification fee. If your home has only one bathroom, you may want to budget for a portable shower or washing facility for the duration of the work. And once plumbing and electrical first fix is finished, making good the surrounding decoration — a hallway wall disturbed by a new waste run, for example — is worth pricing in if it isn't already covered by your decorator.

Three realistic cost scenarios

Cost drivers are easier to picture against real scenarios than against a table alone. The three examples below describe typical specifications at different budget levels — not quotes for a specific job, since every room and every property varies.

A straightforward mid-market refit, from around £3,500. The room keeps its existing footprint — the bath, basin and WC stay where the waste and supply already run — and the client has bought a well-specified but not bespoke suite: a framed shower enclosure over the bath or a pre-formed shower tray, large-format porcelain tiles rather than natural stone, and standard chrome brassware. The work involves stripping out the old suite, first-fixing to the existing waste and supply positions, tanking the shower area to BS 5385, tiling, then fitting and commissioning the new suite, extraction and lighting. Because none of the major price drivers above apply — no waste movement, no structural work, no stone — this is the fastest and most predictable type of job to price and programme.

A higher-specification family bathroom, typically £7,000–£10,000. The brief usually includes moving the WC or basin to improve the layout, replacing a bath with a walk-in shower, adding underfloor heating, and fitting a towel rail on its own thermostatic zone separate from the main heating system. Moving waste positions means altering drainage falls and sometimes lifting part of the floor; underfloor heating adds a floor build-up allowance and a separate commissioning stage, whether it's an electrical mat or a water-fed system tied into the heating; and splitting lighting into separate circuits for general, task and mood lighting means more first-fix runs and testing to Part P than a single pendant and a shaver socket. None of these are exotic specifications, but each adds first-fix labour on top of the baseline refit, which is why this tier typically runs two to three times the straightforward refit figure.

A full luxury re-fit with a wet room and underfloor heating, commonly £15,000–£20,000 or more. This is where most of the cost drivers in the table above apply at once: a full-floor wet room needs tanking across the entire room to a level-access drain rather than tanking confined to an enclosure; natural stone on walls and floor needs careful handling, sealing and mitred edges rather than straight porcelain cuts; a digital shower needs a concealed manifold and control unit installed and commissioned; underfloor heating needs its own build-up and commissioning; and bespoke glass — a frameless walk-in panel cut to an exact, sometimes non-square wall — takes longer to fit accurately than an off-the-shelf enclosure. In a period property, access and protection add further time again, particularly where stone has to be carried through a narrow stairwell or historic joinery needs protecting throughout. No single element here is unreasonable on its own; it's the combination, each adding its own first-fix, tanking or commissioning stage, that moves a job from the lower tiers into this bracket.

Sources and standards

Tanking and tiling practice referenced in this guide follows BS 5385 (wall and floor tiling). Electrical work referenced follows Building Regulations Part P; ventilation follows Part F; structural considerations follow Part A. Brand-specific fixing requirements follow manufacturer installation guidance current at the time of writing.

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