How Much Does a Bathroom Renovation Cost in the UK?

How much does a bathroom renovation cost in the UK? Anywhere from £2,000 for a cosmetic refresh to £15,000+ for a luxury refit — and the difference isn’t just marble versus laminate. Labour, plumbing moves, and the hidden state of what’s behind your tiles drive the number more than the fittings you choose.

We’ve renovated two bathrooms: a £4,500 “good bones” update and a £9,000 full strip-back. The expensive lessons were all about what you can’t see in the showroom. Here’s the real cost picture.

Bathroom renovation cost UK: the tiers

• Cosmetic refresh (£2,000-£4,000): new suite in existing positions, retiling or tile paint, new taps, accessories, redecoration. DIY-friendly in parts.
• Standard full renovation (£5,000-£9,000): strip back to bare walls, new suite, tiling, flooring, lighting, possibly a heated towel rail. Professional fitting.
• High-end (£10,000-£18,000+): layout changes, walk-in shower or wet room, underfloor heating, premium tiles and brassware, designer suite.

Labour is typically 40-50% of the total — a bathroom fitter charges £200-350/day, and a full job takes 1-3 weeks. The suite itself (bath, basin, WC) ranges from £500 (budget) to £5,000+ (designer).

What drives costs up

• Moving plumbing. Keeping the bath, basin and WC where they are saves £1,000-2,000. Every moved waste pipe is money.
• Tiling area. Full-height tiling costs 2-3x partial tiling in labour. Large-format tiles cost more to fit but use fewer grout lines.
• Wet rooms. Tanking (waterproofing), drainage falls and specialist fitting add £2,000-4,000 over a standard shower.
• Hidden damage. Rotten floors, leaking wastes, crumbling plaster — budget 10-15% contingency. Bathrooms hide sins.
• Underfloor heating. £500-1,000 electric mat system — lovely, but an add-on.

Where to save without regret

Save on: the suite itself (mid-range suites from reputable brands perform identically to designer ones), tiling only the wet areas with paint elsewhere (use bathroom paint), keeping the layout, and doing demolition and decorating yourself. Spend on: the shower (it’s the daily experience — a £300-600 shower valve and head transforms mornings), waterproofing and tanking (invisible but critical), and a good fitter (bad tiling ruins expensive tiles).

Smaller jobs within the renovation you might DIY: regrouting bathroom tiles yourself can refresh tired tiling for £30, and dealing with mould on bathroom sealant costs pennies if caught early.

Planning essentials

Measure obsessively — bathroom fittings have tight tolerances. Plan the lighting early (IP-rated zones apply — see our electrical guides), ensure ventilation is sorted (ventilating a bathroom with no windows), and order everything before the fitter starts — a missing shower valve stalls the whole job. Get 3 itemised quotes, check recent work, and never pay more than 25-30% upfront.

The hidden costs nobody warns you about

Every bathroom renovation finds something: rotten floorboards under the bath (£200-500 to fix), a leaking waste that’s been dripping for years, plaster that crumbles when tiles come off, or pipework in positions that make no sense. Budget 10-15% contingency and you’ll absorb these without panic. The other hidden cost is time — a bathroom out of action for 2-3 weeks. If it’s your only bathroom, negotiate the schedule carefully: a good fitter sequences the work so you’re without facilities for days, not weeks (chemical toilet hire is £50-80/week if needed).

Also budget for the finishing: accessories, mirrors, lighting, blind, plants — the £200-400 of details that make it feel finished rather than just functional. People blow the budget on the suite and live with a bare bulb for six months. Don’t.

Ensuites and small bathrooms: special considerations

Small bathrooms cost nearly as much as large ones — the plumbing, tiling labour and waterproofing don’t scale down much. Space-saving pays: wall-hung WC and basin (easier to clean around, feel bigger), a quadrant or walk-in shower instead of a bath (unless it’s the only bath in the house — families need one for resale), large-format tiles (fewer grout lines, feel more spacious), and a mirrored cabinet instead of a separate mirror. Light colours, good lighting and a heated towel rail (which doubles as the room’s heating) complete the small-bathroom formula.

Quick answers

Can I renovate a bathroom myself?
Parts of it, yes: demolition, painting, fitting accessories, even tiling if you’re patient. But plumbing alterations, electrical work (bathroom electrics are notifiable) and waterproofing/tanking should be professional. A common compromise: DIY the strip-out and decoration, hire a fitter for the technical core.

How long does a bathroom renovation take?
1-2 weeks for a straightforward like-for-like replacement; 2-4 weeks for a full strip-back with layout changes. Delays come from material deliveries (order everything before starting), hidden damage, and worktop-style templating waits for bespoke items.

Do I need planning permission for a bathroom renovation?
No, for internal renovations. Building regulations apply to new drainage, structural changes and electrical work — your fitter handles compliance. Listed buildings need consent for significant changes. Adding a bathroom where none existed needs building regs approval.

What’s the best flooring for bathrooms?
Luxury vinyl tile (LVT) — waterproof, warm underfoot, huge range, £20-40/m² fitted. Porcelain tiles are the premium choice (cold without underfloor heating). Avoid laminate and real wood — they don’t survive bathroom humidity long-term.

Financing and phasing the project

Can’t face £8,000 at once? Bathrooms phase well: Phase 1 (weekend, £200-500): deep clean, regrout, new sealant, new accessories, paint — the cosmetic refresh that buys time. Phase 2 (£2,000-4,000): new suite in existing positions, partial retiling. Phase 3 (full renovation): when budget allows, the complete strip-back. Each phase is coherent on its own — no half-finished weirdness.

For financing, 0% credit cards (for materials) and personal loans beat kitchen/bathroom company finance (often 9-15% APR). And time the project for fitter availability — January to March is quietest, summer books up fast. A good fitter in February may cost less and start sooner than the same fitter in June.

Finally, think about resale as you specify: neutral tiles, a white suite and classic brassware appeal to every buyer; bold colours and quirky fittings appeal to some and repel others. You don’t need a boring bathroom — but keep the permanent elements timeless and express personality through easily-changed accessories. The next owner (and the estate agent) will thank you.

See also: Which? bathroom guides.

Spend on what you touch daily

How much does a bathroom renovation cost in the UK? £2,000-4,000 for a refresh, £5,000-9,000 for most full renovations, £10,000+ for luxury. Keep the layout, spend on the shower and the fitter, save on the suite brand — and always keep that contingency. The best bathroom isn’t the most expensive; it’s the one that was planned properly.