Floor plan design for extension of 1970s bungalow - no additional storey desired

It should therefore be a public space.

If you don't need the room, save yourself a lot of costs and only suggest it by building just the outline. You gain the atrium, for example, as a Japanese garden and behind it, another garden space, for example in the form of a relaxation terrace with a built-in whirlpool or a sheltered outdoor kitchen – entirely according to taste (build later – budget!). Thanks to the outline, you can stretch a fabric roof above it (electric mechanics and lateral guidance) and create pleasant shade.

I'm attaching the floor plans for the ground floor and basement in their current state. And a few thoughts. We're still at the very beginning, but sometimes you just need feedback from another perspective.

Uh, no, I haven't seen the basement in either thread yet. Also, I would have at least overlooked a reference to a timber frame panel house here in the thread from – is the exclusion of adding an additional floor possibly based on the fact that the house's structural engineering is unknown? (an extension to a timber frame panel house is certainly not five cents easier than to a stone house!). When did you ( / ) actually want to tell us that we are talking about the same house in two threads here?

Uh, no, I have not seen the KG in either thread yet. I would at least have to have overlooked a reference to a timber frame panel house here in the thread from – is the exclusion of the extension possibly also based on the fact that the statics of the house are not known? (an extension to a timber frame panel house is certainly not a penny easier than to a stone house!). When did you ( / ) actually want to tell us that we are talking about the same house in two threads here?

Again, the post was copied incorrectly into the others. They have nothing to do with each other!

The apparently identical house of @Ingoköth and @LisaBau was nevertheless in two threads

Only that Ingo’s is simply copied from Lisa’s. However, there was Ingo’s thread without Lisa’s with his own drawing. Since I replied to it, I know that. A mistake by the admin, pulling up new users, and a meddlesome 11ant do the rest.