Cultivation obligation according to §6 Building Regulations LSA

Hello,

I just don’t understand ... what is a building obligation? Do I have to attach my house to the tolerated construction of the neighbor?

Thanks in advance

I think what is meant here is that you have to EXTEND your house to that of your neighbor. For example, this is common within cities. So that there is a continuous facade and not here and there 1m or something is missing. Not even 1cm is allowed there.

It is about a kind of outbuilding that is located easily 30 meters behind the border. So not even the residential house.

Do I have to attach my house to the tolerated construction of the neighbor?

Yes.
Despite the lack of knowledge of the site plan, I dare make a bold claim: you can delete "tolerated".

There ...

Where?

a kind of outbuilding

What do you mean by that?
What are you planning?
What is preventing you from your plan?
Who is preventing you from your plan?
Can you provide a site plan?

I hope this is okay

Yes. Despite lacking knowledge of the site plan, I dare to make a bold claim: you can delete "geduldete".

Where?

What do you mean by that?
What are you planning? -> Single-family house
What is stopping you from your plan? -> I want it on the street and not 30 meters behind the boundary
Who is stopping you from your plan?
Can you upload a site plan?