Floor plan tube house L-shape triangular plot including oak tree

Furthermore, the kitchen is planned there.

That sounds like a concrete concept. If that has already been outlined, then show it!

Invitation accepted

L shape is not possible. It becomes too narrow at the bottom by the street

Where kbt has drawn the underground garage, an above-ground one is also possible and it does not block any light. The house is quite narrow there, enough light comes from the other side

... I have read your last posts from yesterday again. Gradually, I want to complain to you, and loudly ... we have been asking for more than 20 pages for a sketch of your ideas and don’t get it. But we get bits like "that’s where we thought of the kitchen" ... I find it increasingly more than rude that everyone here is putting a lot of thought into this and you distribute information half, piece by piece, etc. and then something like

Floor-to-ceiling windows on both sides would ease the narrow/tubular shape of the room. Also, the kitchen is planned there. You see: We have already made some thoughts

that really makes my blood boil.

. we have been asking here for more than 20 pages for a sketch of your thoughts

I would first be interested in the exact dimensions of the plot – down to the centimeter – and of the tree including its crown. Everyone here is drawing with different measurements because the sketch from the OP does not form a complete triangle.

Maybe you can also talk to the nature conservation office about trimming the tree. My dad also has such a giant. There the city significantly cut back the crown. Unfortunately, I don’t remember the reason anymore. But it made a noticeable difference in size.

Possible justification for you:

Tree Protection Ordinance
in the city of Aachen dated 31.01.2001

§ 4 Exceptions and Exemptions
(1) An exception to the prohibitions of § 3 shall be granted if
...
g) the prohibitions of § 3 would have an expropriating effect in individual cases, especially if a permissible building or commercial use of a property would be prevented or restricted beyond what is reasonable to expect from the owner,

or

(2) An exemption from the prohibitions of § 3 may be granted to the owner or other rights holder in individual cases if
...
b) the prohibition would lead to an unintended hardship,
...

As I said – you don’t have to cut it down immediately. Just trimming it a little would surely help. Maybe they are willing to negotiate?

The first thing we did after the purchase was to commission a boundary and height plan from a surveyor. Then you have everything in black and white down to the centimeter and can start planning. Besides, an architect needs such a thing anyway before getting started. , have you already done that? I would strongly advise you to do so, then it can finally become concrete. So far, it’s all groping in the dark, even if it is entertaining to read.

Gradually, I want to complain to you, and strongly ... we have been asking here for more than 20 pages for a sketch of your ideas and we don't get it

And that's why I'm out!

I would first be interested in the exact dimensions of the property - down to the centimeter - and the tree including its crown.

I feel like I asked that in the second or third post, relatively at the beginning. Because everything here is guesswork.

Those who don't want to, already have.