Hi, well in order to comply with the requested premises, I had to take perhaps unorthodox alternatives, in terms of the alignment of the walls with respect to the immovable structure, to obtain the minimum necessary footage, also to grant one window for locale and keep the coincident wet areas together with the existing ones conditioned very much the project.
One clarification more than anything based on the experience, it is convenient from the economic point of view, to demolish all the existing divisions and generate the new ones with rock plaster walls avoiding in this way complications when making the new individual installations.
Despite the fact that the kitchen-bathroom cores are almost superimposed on the current ones, it is very likely that the locations of the artefacts do not coincide because of this there is a level of +0.15 m for these, which allows the drains to be placed without problem.