How complicated would it be to rearrange bathroom?

The answer is simple Anything can be done in most bathrooms, but ot depends how much you want to invest gaining better use of an area To a decent plumber this is relatively easy

The answer safer bathing gave was pretty much spot on.

Rearranging your bathroom layout is entirely possible but involves significant plumbing and gas work that can be costly. Since you are happy with your existing fixtures, the main challenge is relocating the "services" (water, waste, and gas)

Rearranging a bathroom like that is usually **very doable**, but the difficulty and cost mainly depend on where the **waste pipes and soil pipe** are located. Moving things like the **basin, radiator and even the bath** is normally straightforward if the pipework runs under the floorboards or is boxed in, as you can extend the hot and cold feeds fairly easily. The **toilet is usually the limiting factor**, because it needs to connect to the main soil pipe with the correct fall. If the soil stack is on the same wall you’re moving it to, it’s usually simple. If it’s on the opposite side of the room it may still be possible, but it depends on the floor depth and pipe route. The **boiler position** can also affect things slightly, but if it’s just above the toilet it may simply stay where it is while the rest of the layout moves around it. In a 2×3m bathroom it’s actually quite common to rework the layout like you’re describing to make the space more usable. A plumber or bathroom installer would normally want to **lift a section of the floor to check pipe routes** before confirming how straightforward it will be. If the suite itself is in good condition you could potentially **reuse the bath, basin and toilet**, so the cost would mainly be labour, pipe alterations and any making-good afterwards.

Rearranging a bathroom like this is fairly common and usually quite achievable, especially if the room is around 2m x 3m and the pipework is already under floorboards or boxed in as you mentioned. The main factors that determine how straightforward it will be are the location of the soil pipe (for the toilet) and how far the waste pipes need to run. Toilets generally need to stay reasonably close to the soil stack, whereas baths and sinks are much easier to move as their waste pipes can be run under the floor. If the boiler is currently positioned above the toilet, it’s also worth having a Gas Safe engineer check the clearances and whether it would be better relocated as part of the works. In many cases a bathroom can be reconfigured without major structural work, but it will usually involve lifting sections of flooring to reroute pipework and then making good afterwards. Even if the existing fixtures are reused, labour for plumbing alterations, flooring, and finishing work should still be expected. A site visit from a builder or plumber would normally be the best way to confirm what’s possible and how practical the layout change would be.