Floor plan, house layout EFW 150m2, basement + granny flat - feedback desired

How old is the older person?

...so that they have to spend the night in a storage room?

Good morning, I’m asking about the window heights! They are important to me. We messed them up and anyone still in the planning phase can prevent a disproportionately large window sill from spoiling the look. What ceiling height was planned? Is it correct that the windows have a height of 2.08m!?

Good morning Jasmin,
220cm window height would be the intended standard. Clear room height OKFB approx. 250 depending on the manufacturer a few cm up/down.
We are considering a storey increase on the ground floor. Then the windows would probably be even larger. But at the moment that’s more wishful thinking. We have to see anyway what still fits into the budget in the end and what doesn’t.

How old is the older person?

Hello ypg,
currently just under 70. The issue with the staircase descent can of course become challenging at some point. At the moment, however, the person lives on the 5th floor and always has at least one floor to walk down on foot. That naturally also keeps fit.

In draft 1, the entrance to the granny flat was from the “front” via the terrace. Then the descent to the granny flat is a bit more relaxed, but again more complicated. Our naive idea would be to raise the house a bit and thereby save 2-4 steps on the descent. But we can’t quite see all the consequences of that yet. The planning office looked at that draft and gave provisional green light. A request to bring the house to the maximum height of the reference buildings was not approved in general. For that a street alignment is supposed to be made again. Before we continue with that, we want to first fundamentally check what feedback we can gather.

...so that she has to stay overnight in a storage room?

Hi Sol,
Sure, the granny flat is not a 5* hotel. But at the moment the person lives on the 5th floor in less than 30m2 amid noise in the city center. Now there will be significantly more green, unfortunately currently less light, but the proximity to family.
If you have an idea how to get everything to fit together, we’d be happy to hear it.

Hi Sol,
Sure, the granny flat is not a 5* hotel. But at the moment, the person is living on the 5th floor in less than 30m² amid noise in the city center. Now there is significantly more greenery, unfortunately less light at the moment, but the proximity to family.
If you have an idea on how to fit everything on top of each other, we’re happy to hear it.

Well, giving the elderly person only 6m² of bedroom in 200m² is... borderline.
Take a few square meters from the granny flat living room.

I cannot contribute anything regarding the service phases.
Regarding the floor plan: there are no major mistakes in it now. Personally, I am not a fan of a long narrow pantry. I would rather leave out the pantry and plan the kitchen more spaciously and comfortably.

I rather have a problem accepting the granny flat as it is.

The line of thought is as follows: the granny flat should be included so that the older generation initially grows up with the kids and later is not "alone."

Through the separate stair access outside, I do not see the "with" or "not alone." There is definitely a difference whether you have a staircase inside the building or outside. Especially for an older person, because they might need more time with a staircase, where resting on the steps could play a role, which would rather cause the person to stay in the apartment and avoid the stairs.
Also, the outside view suggests a view to the outside, but if you consider the location of the basement apartment carefully, a normally sized person can only look at a concrete wall from the inside. The terrace strip may be long and therefore large, but that does not change the fact that it is unattractive, being a 2-meter-wide strip and 2 meters below the surface.

If necessary, "only" the apartment would be rented out.

I take up the word "necessity" and say: it is an emergency (makeshift) apartment. Who wants to rent that?
Regarding the sleeping area, nothing more needs to be said. In my opinion, I would arrange the sleeping area at the bottom of the plan anyway, and the kitchen near the entrance. Then the underground terrace strip can be shorter and designed with a slope becoming deeper in the sense of wider and attractive, with planting facing the garden. Understandable?

Study (later possibly bedroom in old age)

That is a joke.

But at the moment, the person lives on the 5th floor in less than 30m2 amid noise in the city center. Now there is clearly much more greenery, unfortunately currently less light, but the proximity to family.

I would rather take the city center. And I have to say, I'm not a city kid, but this basement apartment is out of the question for me.

When I look at your draft, these are all compromise solutions that are never really ideal. Basement apartment - no one wants to live like that. The slope is too shallow for a real basement and the stairs are already an obstacle for those over 70 - especially in winter. Access to the living area through the kitchen is crap and access to the pantry through kitchen furniture even more so.

If the basement apartment really has to be, then you should also build it in a way that people actually want to live there. Please imagine you have to move in there next year! This means, in my opinion, on the ground floor with light and air without excavation - for example as an extension. The space you are now "burning" for excavation is not large enough to really let light into the basement apartment and to have a real terrace there. On the other hand, it is too large to still use the garden behind it sensibly. Then you might as well build on the area.