Single-family house with double garage

A built-in closet will go under the stairs, and the office does not necessarily have to be used as an office.

It would have to be a built-in wardrobe: when I look at the routes from the front door to the rooms, I predict that otherwise the clothes will end up not in the utility room, but in the "office".

The building envelope is exactly where it is marked on the "garden plan."
If we want to change the building envelope, we have to go through the approval process.

No one here would even come up with the idea to submit an application to change the building envelope.
It’s simply a matter of planning. Although I do not know the building envelope (unfortunately not marked... dimensions are missing as far as I remember), the house can be shortened considerably.
And then you just have to allocate the meters and not generally assume 6 meters for a double garage, even though it won’t work. That’s just how it is, and it wasn’t different for me: you place a dummy of such-and-such size and neglect it because you think it will comply with the standard. Then, thankfully, a forum informs you about this futility, and now you could make changes instead of tensing up and holding on—to a mediocre initial draft that a professional will anyway still change and that will lose some feathers.
Because if you look at it closely: not a single room here really fits well.

to a mediocre initial draft, which the expert will still change and lose some feathers on.

But, as I already said, it is by far mature enough now to go to the expert with it. As a painted wish list, that is enough for the architect.

And, I would argue, that mistakes in planning or poor planning are by no means compensated for by the [Baukindergeld].

But, as I already said, he is by far mature enough now to go to the professional with it. As a painted wishlist, that's enough for the architect.

I would go without! It's a standard layout anyway, so how could the professional do a worse job than swapping the office and utility room?
Since the garage and the connecting door are not usable anyway, one should consider the most obvious solution and a) not build over the connections and b) keep them short.
Besides, you can enjoy beautiful western sun in the office.
However, you could also put the garage in the east. The driveway is the same and not worse than now. In my opinion, it makes more sense to do that in order to get western sun into the house.

But as I already said, it is by far mature enough now to go to the expert with it. As a painted wish list, that's enough for the architect.

Thank you very much, that’s exactly what I wanted to achieve. Now the professional should handle the proper plan.

Warning irony
I didn’t know you have to have studied architecture before posting a plan here. I juggle money professionally, not centimeters.