How Much Does a Bathroom Renovation Cost in the UK? (2026 Price Guide)

A full bathroom renovation in the UK typically costs somewhere between £3,500 and £22,000, with most homeowners landing around £8,500 for a mid-range family bathroom. That's a wide range — because "bathroom renovation" covers everything from a straightforward like-for-like refit to a full strip-out with moved plumbing, underfloor heating and a walk-in wet room. Below is a realistic, trade-based breakdown of where your money actually goes, and what genuinely moves the price.

Cost by bathroom type

Not all bathrooms cost the same to renovate, even at a similar size — the fittings and the plumbing complexity matter more than square footage.

• Family bathroom: roughly £3,500–£16,000
• En-suite: roughly £3,000–£18,000
• Wet room: roughly £4,000–£22,000 (tanking and falls to the drain add real labour time)
• Master/large bathroom: roughly £7,000–£30,000, especially with freestanding baths or double vanities

This is a different way of slicing the same market than our Bathroom Cost Calculator's simpler small/medium/large bands (roughly £3,500–£6,000 / £6,000–£10,000 / £10,000–£15,000) — that calculator assumes a fairly standard specification at each size. The £22,000–£30,000 figures above sit above that because they cover a genuinely higher-spec scope specifically: full wet-room tanking, or a large master bathroom with freestanding sanitaryware and double vanities — not a "large" bathroom at a standard specification. If your project is a typical bathroom refit rather than a wet room or a high-spec master suite, the calculator's large-tier ceiling of roughly £15,000 is the more realistic reference point.

Costs also vary by region — London and the South East commonly run 20–45% above the figures here, while the North and Scotland tend to sit 10–15% below. Carvalho Renovations is based in Leighton Buzzard and covers Bedfordshire and Buckinghamshire (including Milton Keynes, Dunstable, Aylesbury and Bedford) — the figures above reflect that region rather than London pricing; always get a local, like-for-like quote rather than relying on a national average alone.

A worked example

Take a fairly typical family bathroom: bath, separate shower, toilet and basin, all kept in their existing positions, with a mid-range suite and standard ceramic tiling. That specification tends to land around £7,000–£9,000 — the lower-to-middle part of the family bathroom range. Convert the same room into a wet room with full tanking, or add underfloor heating and a freestanding bath, and the same footprint can move to £14,000–£18,000 — the wet-room detailing and premium fittings are doing that work, not the room getting any bigger.

What actually drives the cost up or down

Moving plumbing

Keeping the toilet, basin and bath/shower roughly where they already are is the single biggest cost saver in any bathroom project. Relocating soil pipes and water supplies means chasing walls, lifting floors, and often extra time from a plumber and, if the soil pipe run changes significantly, Building Control involvement.

Waterproofing and tanking

A proper wet room needs full tanking (a waterproof membrane) under the floor and up the walls, with correctly formed falls to the drain. This is skilled, unglamorous work that's easy to underestimate — and the one area you should never let anyone cut corners on. Our bathroom tiling costs guide goes into this in more detail.

Tile choice and format

Large-format tiles and natural stone cost more in materials and take longer to lay accurately than standard ceramic. If you're planning your own tile quantities, our Tile Calculator will give you an accurate figure — and a decent wastage allowance — before you order.

Bathroom size and access

A tight loft en-suite or an awkward Victorian-terrace layout often costs more per square metre than a larger, easily accessed bathroom, simply because of the extra time needed to work in a confined space.

Labour vs materials: where the money goes

As a rough rule of thumb on a mid-range renovation, expect labour (plumbing, electrics, tiling, plastering, fitting) to account for roughly 40–50% of the total, with materials and fittings making up the rest — see our bathroom labour costs guide for the full breakdown. Projects with a lot of bespoke tiling or joinery skew further toward labour.

Budget, mid-range and premium finish levels

• Budget: standard ceramic tiles, a mid-range suite from a builders' merchant, chrome fittings — gets you a smart, durable bathroom without designer pricing.
• Mid-range: better-quality sanitaryware, a wider tile choice, a thermostatic shower, underfloor heating as an option.
• Premium: freestanding baths, natural stone or large-format porcelain, brassware in brushed finishes, bespoke vanity units.

Realistic timeline

A straightforward refit that keeps the existing layout typically takes 1–2 weeks. A full renovation involving moved plumbing, new tanking and tiling usually takes 2–4 weeks from strip-out to snagging — see our companion guide on renovation timelines for how staging and drying time (not just active labour) affects the overall schedule.

Hidden costs people forget to budget for

• Skip hire and waste disposal for the strip-out
• Making good to adjoining rooms (ceilings below, walls either side)
• Extractor fan/ventilation upgrades, especially in a windowless bathroom — see our guide on bathroom mould causes for why this matters beyond the renovation itself
• Redecorating the hallway or landing after access work
• A contingency of 10–15% for anything the strip-out reveals (old pipework, damp, uneven floors)

What to avoid

See our full guide on common bathroom renovation mistakes for the specific, avoidable errors that push cost up or cause problems later — skipping proper tanking and under-sizing the extractor fan are two of the most common and most expensive to fix afterwards.

How to keep costs down without cutting corners

• Keep the existing plumbing layout wherever practical
• Choose one "hero" premium item (the tile, the tap, the bath) and keep the rest sensible
• Get multiple like-for-like quotes, not just a headline day rate — see our guide on comparing renovation quotes
• Use our Bathroom Cost Calculator to sanity-check a quote against a realistic range before you commit