Key Takeaways
- A full bathroom renovation in London costs £7,500 to £15,000 on average in 2026 (London Bathroom Design / industry data).
- By tier: budget £5,500 to £8,000, mid-range £7,500 to £12,000, high-end £12,000 to £20,000+.
- An en-suite to a standard spec averages around £8,100.
- Labour is the biggest cost, at 45 to 60% of the total, with London daily rates of £220 to £350.
- A full bathroom refurbishment takes around 10 to 15 working days.
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 exactly what a bathroom renovation costs in London in 2026, where the money goes, the design and electrical rules to know, and how long it takes.
How much does a bathroom renovation cost in London?
A full bathroom renovation in London costs £7,500 to £15,000 on average in 2026, depending on size, specification, access and the condition of the existing plumbing and electrics. Budget refits start around £5,500, while high-end bathrooms with premium tiling and fittings reach £20,000 or more.
| 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+ |
Where the money goes
Bathrooms are labour-intensive for their size. Data from Checkatrade and Rated People confirms that labour accounts for 45 to 60% of the total cost, with London daily rates of £220 to £350 across the trades involved. The rest is split between the suite, brassware, tiling and waterproofing.
- Labour (plumbing, tiling, electrics, fitting): 45 to 60% of the bill.
- Suite & brassware: from a few hundred pounds to several thousand for premium ranges.
- Tiling & waterproofing: a major swing factor, as natural stone and full tanking cost more than ceramic.
- Extras: underfloor heating, heated towel rails and bespoke vanity units.
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: relocating the toilet, bath or basin adds significant labour and is the single most common cost escalator.
- Tiling area and material: fully tiled rooms and natural stone cost more than part-tiled ceramic.
- Hidden condition: old or failed pipework, rot or poor subfloors add cost once exposed, which is why a contingency is wise.
- Specification: the suite, brassware, shower system and glass all scale the budget.
Wet rooms and en-suites
A wet room is a premium choice that requires full tanking (waterproofing), correct floor falls to the drain and usually underfloor heating, so it costs more than a standard bathroom, but delivers a sleek, accessible, high-value space. Getting the waterproofing right is critical, because it is the one element you cannot see and cannot afford to get wrong.
En-suites are smaller but not proportionally cheaper. A standard-spec en-suite in London averages around £8,100 because it still needs the full set of trades in a tight space. See our bathroom renovation service for what we cover.
Layout and design tips
Good design makes a small London bathroom feel far larger. A few principles consistently pay off:
- Keep the layout where you can, since moving soil pipes and waste is the costliest change.
- Use large-format tiles and continuous flooring to reduce grout lines and visually expand the space.
- Wall-hung units and a frameless shower screen keep sightlines open.
- Plan lighting in layers, combining ceiling, mirror and accent lighting on a properly certified circuit.
- Add storage early, built into vanity units and recessed niches, so it never looks like an afterthought.
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 carried out and certified by a qualified electrician. This covers lighting, extractor fans, heated towel rails, underfloor heating and shaver points, all of which must respect the defined safety zones around the bath and shower. You will receive an electrical certificate on completion, which matters for safety and when you sell. We include certified electrical work in every bathroom project.
How to save without cutting corners
You can bring a bathroom in on budget without it looking cheap. The smartest savings protect the things you cannot easily change later and economise on the things you can.
- Never economise on waterproofing or plumbing, which are hidden and expensive to put right.
- Mix a statement tile with a budget plain tile to get impact for less.
- Choose a mid-range suite and spend a little more on brassware, which is what you touch every day.
- Keep the existing layout to avoid re-routing waste pipes.
- Get an itemised, fixed quote so you can see and adjust each line.
How long does a bathroom renovation take?
A full bathroom refurbishment in London takes around 10 to 15 working days. The work runs through strip-out, first-fix plumbing and electrics, tanking and tiling preparation, tiling, fitting the suite, second-fix and finishing. Wet rooms and rooms needing layout changes sit at the longer end.
GS Renovation delivers bathroom renovations and wet rooms across all 32 London boroughs, from compact en-suites to spa-style master bathrooms. For a free, itemised quote, contact us or call 07472 424 226. Planning a wider project? See our kitchen renovation cost guide.