Can you put a toilet "cubicle" into conservatory?

[DecisionTime123]

Imagine the soil pipe on the outside corner of a semi detached, they've built a conservatory over it, I don't want to remove the conservatory. The wall next to the soil pipe is brick, but the roof is just sloping plastic style roof.

Can I somehow get a "shell" of a downstairs loo room in it on that corner? So it would have a brick wall on the left (as you sat on the loo facing the garden!), toilet pan backing onto the exterior wall of the house thereby connecting to the soil pipe and a sort of false ceiling, prob no window. Then finally a partition wall on the right hand side, and a door opening towards the garden but within the conservatory.

Is that doable or am I being impractical?

Yes you can. Next door have done it.

Yes, you could. Don’t apply for building regulations though as it wouldn’t comply on several aspects. If you plan to sell in the future, this would be an issue.

Yes. My parents did it. One of their most sensible decisions ever!

That is awful advice

I think that poster is correct that the op's proposal is unlikely to be compliant with building regs and that might cause issues when selling the house.

My parents bought a house with a loo in the conservatory. We were all a bit but actually it’s just another place for downstairs loo and it’s ever so handy!

Not really because you’d better taking the toilet out and converting it to a walk in cupboard if you wanted to sell for minimal cost

Why? It’s very good advice, if I say so myself 😬

I've only just found out about the compliance thing, apparently it's something to do with not being allowed to put a window in it. In any case, how I know, does this mean I won't get a builder to agree to do it?

(and yes I would do it if I could and just remove the toilet to sell)

Feel that I need a diagram

You could get a builder to do the walls and then get a separate plumber to fit the toilet
no need for window you just need ventilation so you could do a ducted extractor fan

Is this a joke?

Yes check with regulations first

The regulations specify you have to have either an opening window or an extractor fan that extracts to the outside.

You would also be required to have a wash hand basin.

Unless you do it properly, and that includes upgrading it to become part of the thermal envelope of the house and creating proper walls rather than panels, it won’t meet the standards of the building regulations. Does that mean that people don’t do this sort of thing without building regulations? No. Would it be an issue if you kept it like that when you came to sell the house? Yes.