Is it worth changing the bathroom layout?
When the current layout wastes the room — yes, and it is cheaper than people fear: moving a basin or shower costs £250–£600 in plumbing; only the WC is expensive to move because of the soil pipe. When the layout already works, spend the money on quality instead. We draw both options so the decision is priced, not guessed.
Layout changes divide sharply by fixture. Basins and showers move on 40mm waste and 15mm supply — flexible, cheap, routine. Baths similar. The WC moves on a 110mm soil pipe that needs fall and a stack — short moves along the stack wall are fine, long moves cost real money and sometimes floor build-up. So the design question is really: does the better room need the WC to move, or just everything else around it?
The layout changes that reliably pay: turning a corridor-shaped room so the shower crosses the end wall; knocking a separate WC through to make one decent room (the classic 1930s move in Bromley and Sutton); stealing 300mm from an adjacent airing cupboard to make a shower fit; and rotating a door swing that currently sterilises a quarter of the floor.
The changes that rarely pay: swapping WC and basin positions for symmetry (soil-pipe money for no functional gain), and chasing en-suite-hotel layouts in rooms a metre too small for them. A quote from us prices your room both ways — as-is refit versus re-planned — because the £800–£1,500 difference is a decision you should get to make consciously.
More in small bathrooms & layouts, or browse all 38 questions on the FAQ index.
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