Bathroom Renovation Cost in London (2026): Full Price Breakdown

A new bathroom is one of the most cost-effective renovations a London home can have — but it's also one where the quote you get can swing by thousands depending on the layout, the spec and who's doing the work. Here's an honest 2026 cost breakdown: what a bathroom renovation actually costs in London across budget, mid-range and high-end jobs, the price of every element from strip-out to making-good, what drives London prices up, and how to read a bathroom quote so you can compare like for like.

The short answer

Most London bathroom renovations land between £8,000 and £15,000 for a quality mid-range job. A simple refresh in a small bathroom starts at around £4,500, while a high-end renovation with premium sanitaryware, full re-tiling and a reconfigured layout runs £15,000 to £30,000 — and a luxury or large bathroom can pass £40,000. As a rough guide London sits 30–50% above the UK average on bathroom labour, mostly because skilled trades, parking and waste removal all cost more in the capital.

The biggest single variable is whether you keep the existing layout or move things around. Swapping like-for-like fixtures in the same positions is comparatively cheap. Moving the toilet, basin or bath — which means re-routing soil pipes, waste and water — adds first-fix plumbing time and can push a mid-range job into high-end territory on its own.

Bathroom renovation cost by scope

These are typical London market ranges for 2026 — a guide, not a fixed price list. Every bathroom is priced on its size, layout changes, spec and access, so treat these as a starting point and get a site visit for a firm figure.

Those ranges cover labour, fixtures and finishes for a typical 4–8 m² London bathroom. They exclude VAT (20% on most domestic work) and any structural or window changes. A small bathroom costs less in total but more per square metre — the plumbing, electrics and labour are largely fixed whether the room is 3 m² or 8 m².

Cost breakdown by element

Here's where the money actually goes on a typical mid-range London bathroom. Add VAT on top, and treat these as supplied-and-fitted ranges unless stated.

Strip-out and removal

Ripping out the old suite, tiles and any rotten substrate, then carting it away, typically costs £500–£1,500. London adds to this: skip hire and permits are dearer, and many flats mean carrying everything down stairs or through communal areas. Period homes often hide surprises behind the tiles — failed plaster, old lead pipe, or a floor that needs rebuilding before anything new goes in.

First-fix plumbing and electrics

First fix — re-routing hot and cold feeds, waste and soil, plus running new cable for lighting, shaver points and the extractor — typically runs £1,000–£3,000. Keep the suite where it is and you're at the low end. Move the toilet or bath and the soil pipe has to move with it, which is the single most expensive layout change in any bathroom. All bathroom electrical work falls under Part P and must be certified.

Tiling

Tiling is £60–£250 per m² supplied and fitted in London, depending on the tile and the complexity of the layout. A typical bathroom needs £1,500–£5,000 of tiling. Large-format tiles, mosaics, herringbone patterns and natural stone all push labour up because they're slower to set and cut. Full-height walls obviously cost more than a half-tile or a splashback.

Sanitaryware and brassware

The toilet, basin, bath and shower together run £500–£5,000+ — individual fixtures are roughly £600–£2,500 each depending on brand. Brassware (taps, shower valves, the shower itself) adds £300–£3,000. This is the line with the widest spread: a high-street suite versus a designer brand can be a five-figure difference on its own.

Shower screen or enclosure

A standard shower enclosure is roughly £300–£900 fitted; a frameless walk-in screen for a wet-room-style shower is £600–£1,800. Bespoke or extra-tall glass, and Crittall-style black-framed screens, sit at the top of that range and beyond.

Underfloor heating

Electric underfloor heating — the usual choice in a bathroom — costs roughly £400–£1,000 supplied and fitted for a typical room, including the mat, thermostat and the screed it sits in. It's far easier and cheaper to add during a full renovation than to retrofit later, so if you want it, now is the time.

Ventilation

A basic extractor fan is £150–£300 fitted; a quieter inline or humidity-sensing unit is £250–£450. Don't skip it — Building Regulations require adequate ventilation, and in an airtight London flat poor extraction is the fastest route to mould and peeling paint.

Making good and decorating

Plastering, boxing in pipes, fitting the floor, then filling, sanding and painting the non-tiled areas typically adds £500–£1,500. It's the least glamorous line and the first one a cut-price quote tends to skimp — but it's the difference between a bathroom that looks finished and one that looks fitted.

The wet-room premium

A wet room — a fully waterproofed, level-access room with no tray or step — costs £6,000–£13,000 in London, averaging around £1,800/m². It's typically £1,000–£3,000 more than a comparable bathroom with a standard enclosure, and that premium buys real work, not just a look:

• Full tanking — the entire floor and lower walls are waterproofed, not just the shower zone. This is the bit you can never see and can never skip.
• A graded former and drainage — the floor is built to fall towards a drain, which means lifting and re-laying the floor build-up.
• Slower tiling — tiling to falls and around a linear drain takes longer than a flat floor.

Done properly it's a beautiful, accessible, easy-to-clean space. Done cheaply it leaks into the room below — and in a London flat that means your neighbour's ceiling. If you're weighing the two formats up, our guide on wet room vs traditional bathroom covers the practical trade-offs in full.

What drives London bathroom costs up

Layout changes and period plumbing

Moving fixtures is the big one. London's Victorian and Edwardian housing stock often has the original soil stack on an awkward external wall, lead or steel pipework, and floor joists running the wrong way for a new waste run. Re-plumbing around that is slower and pricier than a modern build where everything's accessible.

Access, parking and waste

Flats above ground floor, narrow Victorian staircases, controlled parking and congestion or ULEZ charges all add cost in London that simply doesn't exist out of town. Every bag of rubble and every bath has to come in and out by hand, and skip permits in many boroughs are an extra line on the bill.

Waterproofing and tanking

Any shower area — and the whole floor in a wet room — should be tanked behind the tiles. It's a modest cost done at the right stage and an expensive disaster skipped. In a flat, water damage to the property below is the single most common (and most costly) bathroom claim, so this is not the place to save money.

Spec and finish level

Designer sanitaryware, natural stone, bespoke vanity joinery and feature lighting can double a bathroom budget without changing the footprint at all. Most of the spread between a £9,000 and a £25,000 bathroom of the same size is spec, not structure.

Costs people forget to budget for

The headline figure rarely tells the whole story. Budget separately for:

• VAT — 20% on most domestic bathroom work, on top of the build cost.
• Part P electrical certification — required for the new circuits and certified by the electrician.
• Hidden repairs — rotten subfloor, failed plaster or old pipework found once the old bathroom is out.
• A second bathroom or arrangements — you'll lose the room for the duration if it's your only one.
• Contingency — keep 10–15% back for the surprises a period property usually hides.

How to read a bathroom quote

Two quotes for "a new bathroom" can be thousands apart and both be honest — they're just including different things. Before you compare, make sure each quote spells out:

• Whether sanitaryware and tiles are supplied by you or the builder, and if there's a fixed allowance (e.g. "£2,000 for sanitaryware") so you can compare like for like.
• Whether the layout is staying the same or changing — a moved toilet or bath is a major cost the cheaper quote may have quietly left out.
• Tanking and waterproofing as a named line, not an assumption.
• Making good and decorating — plastering, boxing-in and painting, so you're not handed a fitted-but-unfinished room.
• Whether VAT is included or added, and whether removal, skip and parking are in the price.

If a quote is a single number with no breakdown, ask for an itemised version. A builder who can't break it down either hasn't priced it properly or doesn't want you to see where the corners are being cut.

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