Upstairs attic is very small to put a bathroom

The bathroom is not just a place. Because it needs to have water and water pipes. Especially sewage pipes.

The attic is a bathroom above, and the general location is the same as the location of the bathroom downstairs. The attic has to be looked at specifically, and the general feasibility is still there. However, when it comes to the reinforcement of the attic floor slab, it can only be judged by looking at the structural drawing. >>>More

First, the bathroom is on the first floor, the kitchen can of course be placed on the second floor, if it is a self-built house, there is no problem at all, you can come according to personal preferences. >>>More

Someone who understands design should check out the scene of your home. Then give design advice. At the very least, you need to know where the water comes from and where it goes down.

Of course it's not good, in case the original decoration construction is not good, it is very troublesome to leak water in the later stage. The sewer pipe should be as designed by the developer, and it should not be changed at will.