Development according to §34 - Impact on the house position

Does the processor then look at the cadastral plan or go on site and decide objectively?

At least the decision should be in line with similarly situated cases within the municipality.

In my opinion, something like this should be decided by a large committee.

This is countered by the political decision for personnel savings in the public service. And if you involved the architects' council for every project, there would surely be great dissatisfaction over long approval periods due to the meeting intervals.

and the houses then often do not stand in a line

Because urban planners in most cases set building boundaries that must not be exceeded and not building lines on which construction must take place. You would also be allowed to build further back, so the same freedom applies to you.

to position the house according to his personal preference

This is countered by an urban planning concept. Admittedly, it is not always recognizable. In your case, however, I consider excessive criticism of the approval authority to be inappropriate. Point out the atypical nature of your property in a friendly personal conversation and try to get your preferred notification of 6m approved. You already cite some arguments. These presented now without the accusatory tone... maybe your architect should take a look into the rhetorical persuasion toolbox and, involving the department head, sell the notification as an urban planning stroke of luck. If it doesn’t work out, the world won’t end.

Regarding your other comments: You are looking through the lens of someone who apparently feels disadvantaged and cannot do what they envision. You are not seeing with objectivity or the sensitivity, for example, that was used in No. 4. You feel restricted and now – sorry – are sulking. Every post from the last few hours shows that. Think positive... a Sundowner terrace means a second or third terrace or seating area from which you enjoy the evening sun with a drink before going to bed. This hour is often also used for small talk in the neighborhood. Everything has advantages and disadvantages. Always seeing yourself as disadvantaged is the wrong approach. Be glad that you still have an extra corner in the south. There too, a second terrace under trees or in a beach chair or a place for sun loungers is well arranged.

Eine Terrasse im Norden, macht sowas Sinn? Manche Hauser haben ja nur 3m-5m Abstand zur Straße, da kann man natürlich sehr wenig mit anfangen. Vielleicht sind die 7m wirklich nicht so schlecht, weil man da wenigstes eine größere Fläche hat, wo man einiges mit anfangen kann...

You look through the glasses of a seemingly disadvantaged affected person,

Where I see a strong emphasis on "seemingly": I did not get the impression in the floor plan discussion that the house was "lacking" anything due to its location on the property. Whoever wants four south-facing sides has to move to the North Pole. However, the development plan there probably only allows igloos

but still the house builder is denied the possibility to position the house according to his personal preference,

This probably applies to most development plans or construction projects. According to our experience with §34 and the intended building line, the building authority has already extended a hand to you with the 7 meters. We also had a construction law attorney and many, many discussions at the building authority regarding the northern building line. Perhaps a deal with the building authority is possible (see below). Alternatively: angled bungalow or another building shape in "L" form to gain more space from the garden, provided the building does not become too small as a result. The sketched small house is not dimensioned, but it doesn’t look very large?

According to the processor, only Nos. 6 and 7 are decisive, No. 4 plays no role in defining the building line. Of course, one could see it that way.

That could be an approach to negotiate a few centimeters more (distance from the corner of house No. 4 to the street). You would have to afford a construction law attorney, but the investment will quickly be in four figures.

What you should also try again is where you want, can, may place your desired 2 parking spaces (just like that without carport/garage). The northeast corner would be suitable.

Building according to §34 must be approved just as restrictively, imagine the house to the west of you is torn down and rebuilt, now extending 4 meters to the street, you would be furious, your evening sun would be gone. Therefore, no risk, the caseworker is just maintaining peace in the street. Karsten

You are probably right, if everyone could build however they wanted in an established area, many terraces might be shadowed...