Floor plans of a single-family house with a granny flat, please tips and feedback

... you wanted too much: Instead of installing two doors in some rooms, you can simply provide the lintel in the wall and/or also the door opening, which you then close with drywall - so that only one door remains, but the room does not serve only as a traffic area, but actually also becomes usable space. Some doors are also positioned unfavorably - with a bit of shifting, for example, more storage space would be created in the room behind the kitchen if the door were moved towards the kitchen unit. The kitchen is also optimal in terms of price/performance as a single row with a block instead of as an L-shaped kitchen.

The same applies to the internal stairs downwards; I would remove them - maybe also provide a stairwell opening in the floor here that could be opened if needed.

You waste far too much space on traffic areas, just to be prepared for all eventualities - this makes little sense on the small plot.

In short: the jack of all trades also did not succeed here.

You are trying to get a jack of all trades; a compromise for everyone, but that’s not what results in a single-family house for one family.
Please fill out the questionnaire.
Insert a floor plan as you currently want to use the rooms.

Take a look at the development plan or the parking space regulations. How many parking spaces must be planned per residential unit on the property? What are the floor area ratio and the site coverage ratio? Always draw the desired or existing furniture to scale in the floor plan. For example, consider the space required for occupied chairs at tables and chairs.

I thank you for your feedback, especially

I will enter everything in detail over the weekend and implement your suggestions. The dimensions of the furniture, etc. are correct. I like the idea of the stairwell. It would have been great if the office on the ground floor could also have been used together with the granny flat. (Club, everyone knows everyone).
. We will soon be four people, so you definitely need some traffic area for strollers, clothes, etc. How would you sensibly implement the ground floor with the stairwell? The bathroom should also be extendable later if someone has to live on the ground floor and cannot use stairs.

You are quick to be satisfied.... :D You have received the link to the questionnaire, and especially the displayed personal circumstances can help achieve a better result. So if you want more extensive, critical feedback, you should expand your individual information as much as possible.

... I am talking about double traffic areas for contingencies... and about pointless traffic areas due to poor planning, not about effectively needed traffic areas