Key Takeaways
- A full bathroom renovation in London costs £7,500 to £15,000 in 2026, against a UK average of £6,000 to £7,000 (HomeOwners Alliance, MyJobQuote, 2026).
- By tier: budget £5,500 to £8,000, mid-range £7,500 to £12,000, high-end £12,000 to £20,000+.
- MyJobQuote puts a mid-range London bathroom at £8,500 against £5,500 in the North East.
- Labour is the biggest single cost at 45 to 60%, with London day rates of £220 to £350 and up to £480 for specialists.
- A full refurbishment takes 10 to 15 working days. Allow a 10 to 15% contingency for what is behind the walls.
A new bathroom is one of the highest-impact upgrades you can make to a London home, but prices vary widely with size, specification and the state of the existing plumbing. Here is what one costs in London in 2026, where every pound goes, and what a quote usually leaves out.
How much does a bathroom renovation cost in London?
A full bathroom renovation in London costs £7,500 to £15,000 in 2026. Budget refits start around £5,500 and high-end bathrooms reach £20,000 or more. The same job averages £6,000 to £7,000 nationally, so London adds 10 to 20% like for like.
Check the scope before comparing. Every figure here is a full refurbishment: strip out, first and second fix plumbing and electrics, tanking, full tiling, new suite, brassware, flooring and decoration. A suite swap into existing tiling is a different job at £2,500 to £4,500.
| Bathroom tier | What you get | London cost |
|---|---|---|
| Budget | Standard suite, ceramic tiling, like-for-like layout | £5,500 to £8,000 |
| Mid-range | Quality suite, porcelain tiling, new layout, heated rail | £7,500 to £12,000 |
| High-end | Premium suite, natural stone, wet room, underfloor heating | £12,000 to £20,000+ |
What does it cost for your bathroom?
Floor area matters less than you would expect, because a 2 m² en-suite needs the same plumber, electrician, tiler and fitter as a 7 m² family bathroom. Halving the size never halves the price.
| Room type | Typical size | London cost |
|---|---|---|
| Cloakroom or WC | 1.5 to 2.5 m² | £3,000 to £5,500 |
| En-suite or shower room | 2.5 to 4 m² | £6,300 to £9,600 |
| Small family bathroom | 4 to 5 m² | £7,500 to £11,000 |
| Standard family bathroom | 5 to 7 m² | £9,000 to £14,000 |
| Wet room | 3 to 6 m² | £10,000 to £18,000 |
| Master, freestanding bath | 8 m² and above | £15,000 to £25,000+ |
Where does the money actually go?
Bathrooms are the most labour-intensive room in the house for their size. Labour is 45 to 60% of the total, at London day rates of £220 to £350 and up to £480 for specialists, because five trades work in a room the size of a parking space. The breakdown below is a mid-range family bathroom.
| Element | London cost | Notes |
|---|---|---|
| Strip out and disposal | £600 to £1,000 | Skip permit extra |
| First-fix plumbing and waste | £900 to £2,000 | Doubles if layout moves |
| Electrics, extractor, certificate | £900 to £1,200 | Notifiable under Part P |
| Tanking and waterproofing | £300 to £900 | Whole room for a wet room |
| Tiling supplied and fitted | £1,500 to £3,500 | £100 to £130 per m² in London |
| Suite: bath, WC, basin | £400 to £2,500 | |
| Brassware, shower and screen | £500 to £3,000 | Most visible spend |
| Vanity unit and storage | £300 to £2,000 | |
| Underfloor heating or heated rail | £400 to £1,500 | |
| Flooring | £400 to £1,200 | |
| Plastering and decoration | £500 to £1,200 | Includes the ceiling below |
Why does a London bathroom cost more?
London sits 10 to 20% above the national average on MyJobQuote's 2026 regional figures, and the gap is labour and logistics rather than better fittings.
| Region | Mid-range family bathroom |
|---|---|
| London | £8,500 |
| South East | £7,200 |
| Midlands | £6,300 |
| North West | £5,900 |
| North East | £5,500 |
A London bathroom also carries costs a national average never sees. Materials go up the stairs by hand, skips need a borough permit, and Victorian houses hide lath and plaster, lead pipework and badly notched joists that surface on day one.
What affects the cost of a bathroom renovation?
Two bathrooms of the same size can differ by thousands. The biggest factors are whether you keep the existing layout, the tiling and suite you choose, and the condition of what is hidden behind the walls and under the floor.
- Moving plumbing: the most common cost escalator, because a soil pipe needs a fall and a floor void to run in.
- Tiling area and material: fully tiled natural stone costs far more than part-tiled ceramic, and large-format and mosaic tiles lay slower.
- Hidden condition: failed pipework, rot or poor subfloors, which is why a 10 to 15% contingency is not optional.
- Water pressure: a gravity system will not run a rainfall shower, and a pump or unvented cylinder is a real cost.
- Structural changes: combining a bathroom and box room needs a beam and building control. See removing a load-bearing wall.
Wet rooms and en-suites
A wet room costs £10,000 to £18,000 in London, more than a standard bathroom of the same size, because it needs full tanking, correct floor falls, a recessed tray and usually underfloor heating. The waterproofing is the one element you cannot see and cannot afford to get wrong. Our wet room guide covers the detailing.
En-suites are smaller but not proportionally cheaper. A standard-spec en-suite in London averages £8,100, because it needs the full set of trades and the tight space slows all of them. See our bathroom renovation service.
Layout and design tips
Good design makes a small London bathroom feel far larger, and the decisions that do it are cheap if made early. See planning a bathroom layout.
- Keep the layout where you can. Moving soil pipes is the costliest change.
- Use large-format tiles and continuous flooring to cut grout lines.
- Wall-hung units and a frameless screen keep sightlines open. See small bathroom ideas.
- Plan lighting in layers, ceiling, mirror and accent, on a certified circuit.
- Add storage early, in vanity units and recessed niches.
Electrics, Part P and building regulations
Bathrooms are a wet environment, so electrical work is notifiable under Part P of the Building Regulations and must be certified by a qualified electrician. It covers lighting, extractor fans, heated towel rails, underfloor heating and shaver points, all of which must respect the safety zones around the bath and shower. Budget £900 to £1,200 including the certificate, which you will need when you sell.
What does a bathroom quote usually leave out?
Most bathroom overspends are not price rises, they are items nobody priced. Check these before signing:
- The tile allowance, often a provisional sum near £30 per m². Specify £90 per m² porcelain and you pay the difference.
- Making good the ceiling below after pipework, and the landing.
- Extractor ducting to outside. Venting into a loft causes condensation.
- Access panels for concealed cisterns, valves and mixers.
- Pressure upgrades if the system cannot serve your chosen shower.
- Skip permits and parking suspensions, charged weekly.
How to save without cutting corners
You can bring a bathroom in on budget without it looking cheap. The smartest savings protect what you cannot change later:
- Never economise on waterproofing or plumbing. Both are hidden and expensive to put right.
- Mix a statement tile with a budget plain tile, and choose a mid-range suite with better brassware, which is what you touch every day.
- Get an itemised, fixed quote so you can adjust each line.
How long does a bathroom renovation take?
A full bathroom refurbishment in London takes 10 to 15 working days, against a UK average of 6 to 8 days for a like-for-like refit. The sequence is fixed, and tiling before the tanking has cured is how bathrooms fail. See our order of works.
| Stage | What happens | Days |
|---|---|---|
| Strip out | Removal, disposal, exposing pipework | 1 |
| First fix | Plumbing, waste, electrics, layout changes | 2 to 3 |
| Preparation | Boarding, tanking, floor levelling | 1 to 2 |
| Tiling | Walls and floor, then grouting | 3 to 4 |
| Fitting | Suite, brassware, screen, second fix | 2 to 3 |
| Finishing | Flooring, sealing, decoration | 1 to 2 |
| Handover | Snagging, electrical certificate | 1 |
GS Renovation delivers bathrooms and wet rooms across all 32 London boroughs. See our bathroom renovation London page, or contact us on 07472 424 226. Doing the whole house? Read our kitchen and full house cost guides.