Bathroom Cost Calculator UK 2026

How This Calculator Works

We combine bathroom type, scope of work, finish quality and your region with 2026 UK supply-and-fit pricing. Fitting a specific room? Our wet room cost calculator and loft en-suite calculator price those layouts directly.

Typical Bathroom Costs (2026, Supply & Fit)

base × scope × finish × region from our calculator, at its starting region, East Midlands (×0.92), including VAT at 20%.

These figures power the calculator above — enter your own spec for a tailored estimate. For the full breakdown, read our complete cost guide.

How we produced these figures

The cost ranges on this page come from BestBuilders’ 2026 regional cost model: published national cost guides adjusted by a regional labour index and averaged across the towns in each region, then reviewed against published trade pricing. They are indicative ranges for a typical specification, not quotes — access, finish level and the builder’s workload move real prices either way.

Regulatory points (planning, Building Regulations, grants and VAT) are checked against current UK government guidance. Spotted something out of date? Tell us via the form above.

What actually moves a bathroom quote

The calculator gives you a fair range, but the spread inside it comes down to a handful of decisions. The first is whether you keep the layout. Leaving the bath, basin and WC where they are keeps the plumbing short and the walls intact; moving any of them means new hot and cold feeds, new waste runs, lifted floors and chased walls, then extra making good and tiling once it’s all back. That one choice is why two quotes on the same room can look so different.

Moving the WC is the change that bites hardest, because the soil pipe has to fall consistently to reach the stack. A basin or bath can often be shifted with modest pipework; relocating the toilet can mean boxing in a new run, dropping a floor or building the finished level up. If a quote for a ‘layout change’ looks high, the soil and waste routing is usually the reason.

Tiling is measured, not guessed. A fully tiled family bathroom has far more square metres than a half-tiled shower room, and the tile itself swings the figure – ceramic is cheap to buy and fix, while large-format porcelain and natural stone cost more in both material and labour because they’re heavier and slower to set. Underfloor heating under that floor adds a layer of its own.

A wet room is a different job again. Instead of a tray you tank the floor and walls to make them watertight, form a fall to the drain and often reinforce the floor first. That tanking, and the drying time it needs, is why a wet room sits above a like-for-like refit even at the same finish level.

Electrics are where a bathroom stops being cosmetic. New lighting, a shaver socket, an extractor to clear moisture and any electric shower or heated mirror all fall under the wiring rules for a room with water, and the work must meet Building Regulations. A competent electrician certifies it, and that certificate is worth having when you sell.

Most people are best served by a bathroom fitter who brings their own plumber, tiler and electrician, so one firm owns the sequence and the schedule. Hiring trades separately can save money on a simple like-for-like swap, but you carry the coordination and the risk if one trade’s slip stalls the next. Get three itemised quotes and check each covers waste removal and making good before you compare the bottom lines.

The calculator’s questions, explained

Each price below is what the calculator above returns when you change only that answer and keep the others at the starting settings (Full Bathroom Refit, Full Refit, Standard, East Midlands): £4,301–£6,072, mid-point £5,060. Figures include the suite, tiling, labour, electrics and VAT at 20%, with a contingency buffer, as the calculator's result says; structural work and asbestos removal are extra.

Type of bathroom

Each type carries a different base cost. The type sets the starting price that scope, finish and region then multiply, so it changes how much every later answer adds.

Scope of work

The biggest single cost driver after suite specification. Scope multiplies the whole price, and moving the WC costs most because the soil pipe needs a steady fall to the stack. In England, a new circuit, or adding to circuits close to the bath or shower, is notifiable under Part P: use an electrician registered with a competent person scheme or have building control sign it off.

Finish quality

Finish spec is the third biggest cost driver. Finish multiplies the whole price, so it adds more on a big job than a small one. Tiles drive much of the gap: large-format porcelain and natural stone cost more to buy and are slower to fix.

Where the property is

Labour rates vary by region, from 18% below the calculator’s base rate in Northern Ireland to 35% above it in London. The region multiplies the whole estimate, by the percentages the calculator shows: London +35% · South East +15% · East of England +5% · South West +2% · Scotland −5% · West Midlands −6% · East Midlands −8% · Wales −8% · Yorkshire & Humber −10% · North West −12% · North East −15% · Northern Ireland −18%. At the starting settings that moves the mid-point from £4,510 in Northern Ireland to £7,425 in London.

Non-price facts above: GOV.UK: Approved Document P (electrical safety).

Frequently Asked Questions

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