Floor plan discussion single-family house / separable residential units

I am amazed at the passive-aggressive and condescending tone with which communication is (partly) conducted here. I did not expect that.

....

Who wants the bathroom to smell like sh... when taking a shower, and it would be possible to combine the toilet and bathroom. Load-bearing walls are a matter for structural engineers, not architects, and I dare say I know what I'm talking about.

... but in one’s own family or among friends or acquaintances, examples of elderly residents of single-family homes that were not planned to be dividable.
... the decision to want to do it better already makes it practically "done."

What you don’t understand is that the exact opposite is the case. I see how great it is when the floor plan is already divided in such a way that it can easily be separated into residential units. And I see in my circle of friends and acquaintances how this is used.

Thanks anyway for some useful remarks, but I’m out.

... sorry, that’s childish. Some people have put thought into this here.

Toilet preference is simply a matter of taste; I personally like my toilet in the bathroom because I often have to use the loo right before showering ... and by then I’m already naked ;). Notes on the proportions of the rooms and the usability of that size are sensible. Likewise, if you already want to plan for the two-part division, it makes sense to check the potential future use of some rooms ... see on the ground floor guest room = couple’s bedroom with two-part division.

No one here has to talk you down after your beard, which unfortunately happens too often in real life. Simply because your real counterpart avoids conflict and similar things.

Oops, I actually wanted to ask where north is, and already someone is sulking here! And I found this unsent post on my phone: "… besides, you usually need the upper rooms, so the freed former children's rooms, to (finally) realize yourself and set up a hobby room (sewing machine, reading room, craft or music room, gaming hell, and sports) there. By the way, at some point the friends no longer come as overnight guests, but your own children with their grandchildren. They then also want to sleep somewhere or even have a playroom. You could nicely use the upper floor for that, once the kids have left the house, before renting it out. I repeatedly remind you of the missing euros for the basement." Yes, criticism is often an unpleasant guest.

The thing with the separate WC can be done that way. However, 4 toilets in a two-story single-family house are a bit too much. In a single-family house, the bathroom on the ground floor is already such a luxury that is hardly used (we have one too). Adding a separate WC on top of that is just a waste of space. I know, for you, it's a step towards old age if you want to turn it into a multi-family house, but those are the additional costs for it. Not just a second electrical distribution board upstairs.