Gable roof bungalow with max. 145 sqm possible on the plot?!

We only have a rough outline in our heads so far, but not on paper,

Well then, get it out of your head and onto paper. The wish seems doable here.

I noticed that I accidentally did not write in or draw in that the access will be from the east (i.e., over the 11m) and not via the dead-end street.

Then just inform accordingly per the suggestion. And since you are already so exemplary in showing the location without the usual blackouts here, I’ll take the liberty to add an aerial photo:

We were thinking of putting the garage in front of the house ... then we would also have a driveway or are we thinking incorrectly?! I unfortunately have no other option on my phone than to display it so poorly ... :(

Thank you very much for your feedback!!! I or rather we are relieved that the dream is probably achievable :)

now we can start to engage intensively with the floor plan :)

What was provided to us from the development plan, I have attached at the beginning ... in August last year it was adjusted again regarding roof pitch and limitation ... I have only uploaded excerpts of that ...

According to the development plan, you are allowed to use the dead-end street. Theoretically, you could split the plot. But I wouldn't do that. I would only plan my house in such a way that it can be easily divided later.