Adjacent neighboring garage (existing building) with a height of 3.6m

So far, the consensus here seems to be that this may or may not disadvantage me.

My main concern here was the assessments and experiences of the people here, to what extent the neighboring garage at the boundary with 3.5m height could negatively affect the building application.

The question of all questions is, can or may this negatively influence our building application?

At this point I do not want to make an appointment at the building authority.

If you comply with the development plan, the neighboring garage cannot affect you.

But we are going around in circles here: You won’t get certainty by buying and submitting the building application. You only have certainty once it is approved or you go and talk to them.

It’s not that simple. There is also the state building code.

The plot has already been purchased, if I understood correctly. Therefore, politely asking now doesn't help much.

The problem is probably rather that an architect/draughtsman authorized to draw with knowledge of a theoretical distance requirement would knowingly violate the state building code. The question remains how this "offense" is assessed and whether someone would comply.

If you take it literally, the building application would probably have to be submitted to the building authority with the information about the neighbor's unauthorized construction including its dismantling. That leads exactly to what the OP did not want. Huge fuss.

Therefore, I stick to my opinion. Just submit the building application and pretend you don't know anything. Otherwise, prepare for a long processing time with neighborhood disputes. That will probably be uglier and more expensive than if you set aside amount x for a possible fine.

it's not that simple. There is also the state building code.