Help me squeeze in an en-suite please!

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Hello hive mind,

This is the upstairs of our house, we have three children and work from home so all bedrooms occupied. Our main bathroom is downstairs. We'd like to squeeze an en-suite or a bathroom in upstairs somewhere. Any ideas gratefully appreciated!
The cupboard with the little circle in already has an upstairs loo. The downstairs bathroom is below bedroom 2, the kitchen below bedroom 1 and the utility below bedroom 4 so we have plumbing coming in all directions.

Sorry i wouldnt - the ensuite would be very small wherever you put it and even the largest bedroom isnt very big so would struggle to fit one in.

Ask your council what they would allow. Probably none without giving up a bedroom.

Put a new wall in at an angle where the toilet cupboard is. The maximum possible space to be enclosed. You might need to reverse one or both of the bedroom doors that abut the new toilet door. Would you then be able to squeeze a small corner shower into the toilet room and a tiny basin? It might be best to make it into a wet room with a simple shower curtain to keep the worst of the water off the toilet and sink.

You lose a little upstairs hall space but no bedroom loses anything. Everything could be done to maximise the space including using shower panels and making a thin and bifolding door.

When I say put in a new (angled) wall, it would be mostly door.

Could you use a bit of the billed above the stairs?

Obviously depends on the ceiling height.

I would take a 1m slice out of the end of bedroom 1 (at the bottom of the picture as you look at it). 1m X 3m is perfectly large enough to fit a shower, sink and shower. Consider a sliding door.

We have loo shower and basin in 0.9x1.8m and it works great, but that’s with a door centred on one side so we can use both ‘ends’ of the room.

That looks similar to our house.. attempted daigeam attached - although bed 4 door is on an angle in reality....

I'd do exactly what karotkake suggests.

I'd take a lump off Bedroom 4, then you keep the loo where it is and add a shower in the new bit.

So long as the wall at the top left is still long enough for a single bed to go against the back wall you should be fine.

Top right even!

Yes, that's what I do in bedroom four.

this option lets you take some space off bed 3 so you don't have to move much plumbing and none of the bedrooms are far too small

I'd be wary of anything that loses too much from bedroom one if you have resale in mind at any point.

It is already quite compact. I think reducing bedroom four and losing a bit of hallway makes most sense to extend existing toilet into shower room.

That way it's still a single bedroom or decent office. Anything else reduces a double to a single or means the master is not really a master

Are the internal walls brick or stud walls? That would make a difference as to what is doable.

Similar to KarrotKake’s

If this is the top floor you may be able to do a Velux in the new bathroom or at least a sun tunnel, for light

I was working on the same plan as SwelegantParty has done. That keeps three double beds intact, and a decent single. It’s not just plumbing (water) that’s needed, it’s the sewage that is expensive to provide to a different part of the house, so using the existing toilet is very beneficial.

Can you knock out whatever is the grey shaded part in Bedroom 3 and then do an L shaped small bathroom in what you now have as your toilet - S is for shower, small wall hung sink and loo. You could build in the space right up to where the door for Bedroom 4 is.

If you google "Ideal Standard Concept Space" you should accept a page that gives lots of inspiration / photos of very small spaces and how to maximise them - kind of aerial shots of bathrooms, just to get ideas.