Where can I add a shower room in this floorplan?

[Neiva]

It is a ground and lower ground floor flat. There is a big bathroom in the lower ground floor (toilet, shower room and bath) and a tiny toilet upstairs in the ground floor. Ideally I would like to make the toilet upstairs into a proper small bathroom (adding a small shower room) but is that possible? Or what is the best option here?

Its difficult to tell, but would there still be landing space if you extended the toilet space out over the existing kitchen door …. Which you then move to flush with the side wall. You lose landing space and a kitchen cabinet

Make the reception room a bit smaller, and add a toilet and shower room in the space created? Remove the toilet from the small room and make it a cupboard.

I am guessing it is a terrace so the plan above won't work unless you install a macerator because the distance to an outside wall will be too far for the toilet waste pipe.

I think the only option is knock through to the adjoining bedroom and steal a corner from there but it will be up some stairs and could potentially need a steel to support the ceiling.

Would a tiny ensuite shower in the corner of the bedroom work maybe?

Ah, good point! I thought about extending into the bedroom but the thickness of the walls made me think they were potentially load-bearing.

OP maybe an architect could help?

Is there any possibility of building out to extend the current WC? It would potentially compromise your patio and downstairs window...

Are you trying to add it in for accessibility purposes? In which case, you probably need it to be bigger than the tiniest possible shower. Or do you want the flat to be used by sharers rather than a couple/family?

It feels pretty good to have a toilet on each level in a flat that size - why the need for a shower room? (might help with potential solutions)

a radical solution would be to swap Bed2 with the living room. So put bedroom 2 in the front (B2) with a strip cut off for the bathroom (b) which is almost above the lower-ground bathroom meaning the plumbing should be possible.

then you'd need to take out the corridor wall to get a much bigger living room (L). the current loo by the kitchen would become storage or you could be even more ambitious and make that part of the kitchen too.

That's a clever solution. Expensive though especially if there isn't a poo pipe round the front of the house.

It should be possible to connect to the plumbing and sewage pipes in the bathroom below my suggested bathroom. That is why I went for that location.

Oh yes. Missed that.

I think I would make the lower ground room the lounge and then rejig the ground floor into 2 bedrooms and a bathroom.

Current bathroom could be a shared utility room with WM & TD.

Can you move your kitchen door to the far corner and eat into landing space