Cost of a Wet Room in the UK: Prices in 2026
TL;DR
A wet room costs £5,000 to £13,000 fitted in the UK, with the average near £9,000. Prices by size, what the quote covers, and a worked example for a standard 4 m2 room.
Table of Contents
Cost of a wet room: the short version
A wet room costs £5,000 to £13,000 fitted in the UK, and the average sits near £9,000. That is the Checkatrade guide figure, last updated in June 2026. A small room can come in under £5,000, and a large room with premium tiles and underfloor heating can pass £15,000. The number that matters for your quote is the size of the room and the state of the floor under it.
A wet room is a bathroom where the whole floor is waterproofed and graded to a drain, so the shower needs no tray and no step. You pay for the hidden work as much as the visible finish. The tanking membrane, the drainage former and the screed that falls to the drain are what keep water out of the floor below. Get those wrong and the repair bill runs into thousands, which is why the cheapest quote is rarely the right one.
Figure 1: A marble-tiled shower room. A wet room takes this idea further: the whole floor is tanked and graded to a drain, so there is no tray and no step.
Wet room cost by size
Size drives the price more than any single fitting. The table below uses 2026 UK guide prices for a full supply and fit, including tanking, drainage, tiling and sanitaryware.
| Room | Typical fitted cost | What you get |
|---|---|---|
| Compact en-suite | £4,000 to £7,000 | Shower area only, solid floor, basic tiling, fixed glass panel |
| Standard bathroom | £6,000 to £10,000 | Full strip-out, tanking, screed, mid-range tiles, frameless screen |
| Large or luxury room | £10,000 to £18,000+ | Premium tiles, bespoke glass, underfloor heating, rain head shower |
BestBuilders puts most standard 4 to 5 m2 conversions at £6,000 to £8,500 inside that wider range, and Checkatrade puts the UK average at about £9,000. London and the South East add 20 to 30% to the same job.
What the price includes
A proper quote covers the waterproof construction and the labour to build it. Tiles and fittings are sometimes priced apart, so ask for an itemised quote and check the waterproofing lines against the table below.
| Cost element | Typical amount | Notes |
|---|---|---|
| Tanking and waterproof membrane | £500 to £1,200 | Never skip this. It is the whole point of a wet room. |
| Drainage former, linear drain, graded screed | £700 to £1,500 | Forms the fall to the drain across the floor. |
| Labour | £220 to £350 per day | Plumber and bathroom fitter day rates in 2026. |
Tiles, the shower valve, the glass screen and the sanitaryware vary with what you choose. The worked example below prices them at £1,800 for tiling and £1,600 for the shower and sanitaryware, which is a mid-range choice for a standard room.
Worked example: a standard 4 m2 wet room at £7,500
Take a standard 4 m2 bathroom on a solid concrete floor, mid-range tiles, a thermostatic shower and a frameless glass screen. A quote of £7,500 breaks down like this: tanking £850, drainage former and graded screed £1,100, tiling £1,800, shower valve, screen and sanitaryware £1,600, labour £2,150. Add those five lines and you get £7,500 exactly. The tanking and drainage lines sit inside the published component ranges above, and the tiling and fittings lines are the mid-range choice for this room. If any line falls far outside its range, ask the fitter why.
What pushes the price up
- Suspended timber floors: common in pre-1970s houses, they need joist work and a specialist build-up before tiling. Add £800 to £2,000.
- Drainage moves: moving the soil pipe or cutting a new drain run adds labour and materials fast.
- Underfloor heating: electric matting under the tiles adds several hundred pounds plus the running cost.
- Large-format tiles: fewer grout lines and a cleaner look, but slower to lay and dearer per tile.
- London and the South East: expect 20 to 30% above the UK average for the same room.
Grants for an accessible wet room
A wet room fitted for mobility needs can qualify for a Disabled Facilities Grant, which can cover up to £30,000 of the work in England. Apply through your local council, and get an occupational therapist assessment first. The grant is means-tested for adults, and the council decides what it will pay for. If the wet room is for a disabled person, VAT relief may also apply, so ask the fitter to confirm the VAT treatment on the quote.
Sources: Checkatrade wet room installation cost guide, last updated June 2026 (range £5,000 to £13,000, average about £9,000, £1,800 per m2); BestBuilders wet room cost guide 2026, updated 22 August 2026 (£5,000 to £12,000, most standard rooms £6,000 to £8,500, 7 to 15 working days, Disabled Facilities Grant up to £30,000); HGN Bathrooms wet room cost guide 2026 (small £4,000 to £7,000, standard £6,000 to £10,000, luxury £10,000 to £18,000+, timber floor add £800 to £2,000). Prices checked 14 November 2026.
Frequently asked questions
How much does a wet room cost in the UK?
Between £5,000 and £13,000 fitted, with the average near £9,000 (Checkatrade, June 2026). A small en-suite can cost £4,000 to £7,000, and a large luxury room can reach £18,000 or more.
Why is a wet room dearer than a walk-in shower?
A wet room needs the whole floor tanked and graded to a drain, plus a drainage former and screed. That hidden waterproofing is a large share of the job. A walk-in shower only waterproofs the tray area.
How long does a wet room take to fit?
A standard room takes 7 to 15 working days from strip-out to grouting. Timber floors, drainage moves and bespoke glass add days.
Does a wet room add value to a house?
A well-built wet room adds appeal, above all for buyers who want level access or a modern bathroom. A badly tanked one does the opposite, so keep the guarantee paperwork and the tanking certificate.
Can I get help paying for a wet room?
Yes, if it is for mobility needs. A Disabled Facilities Grant can cover up to £30,000 in England. Apply through your local council with an occupational therapist assessment.
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