A full bathroom renovation in London typically costs between £6,000 and £20,000, with high-end or structural projects running to £35,000 or more. The single biggest factor is whether the plumbing layout stays put or moves.
Price bands
- Cloakroom / WC – £3,000 to £6,000. New toilet, basin, tiling and decoration in a small space.
- Budget full refit – £6,000 to £12,000. Same layout, mid-range suite, half-height or feature-wall tiling, new flooring, extractor and lighting.
- Mid-range – £12,000 to £20,000. Some layout change, better fittings, floor-to-ceiling tiling, underfloor heating, a walk-in shower with a glass screen.
- High-end / wet room / structural – £20,000 to £35,000+. Moving the soil pipe, new stud walls, full tanking, bespoke joinery, large-format or natural stone tiles, premium brassware.
What pushes the cost up
- Moving plumbing – relocating the toilet or soil stack means lifting floors and new drainage runs.
- Tiled area – full-height tiling on every wall roughly doubles the tiling labour and materials versus half-height.
- Tile choice – large-format porcelain and natural stone cost more to buy and to fit.
- Wet room build-up – forming falls in the floor and tanking the whole room.
- Underfloor heating, niche shelves, concealed cisterns and frames.
- Condition behind the tiles – rotten joists, failed old waterproofing or crumbling plaster found once the room is stripped.
How long does it take?
Two to four weeks for most bathrooms once work starts: a few days to strip out, first-fix plumbing and electrics, then plastering, tiling (with drying time between coats and grout), second fix, and finally glass, sealant and snagging. A wet room or a layout change adds a week or so.
Getting an accurate quote
- Choose your suite, tiles and brassware first – the quote depends on them.
- Decide early whether the layout moves.
- Check the quote covers making good, flooring, decoration and clearing waste.
- Use one team for plumbing, tiling and electrics so there is no finger-pointing if something leaks.
Arkivon Group handles bathroom renovations across London in-house – plumbing, tiling, electrics and finishing – on a fixed price with a written guarantee. Book a free site visit for a firm quote.