Which building window in Paragraph 34

The answer has already helped me a lot. Prefabricated houses are therefore out of the question. Best regards

... and I can't get 150 sqm of living space there either, without a complete attic conversion. But then we can also stay in our semi-detached house.

Gladly! For further questions, including regarding new planning, we are always open to listen :)

Right of way and easement

No driving right? Hopefully, there is no parking space ordinance that requires a necessary parking space on the building plot.

From your blue line, I gather that there is a certain scope for interpretation here?!

Yes, there is. However, I consider the lady’s interpretation untenable. My "worst case" interpretation:

For a building preliminary inquiry, you need a concrete floor plan design, right?

No.
§34 Building Code
Within the built-up urban areas, a project is permissible if it conforms in type and extent of structural use, construction method, and the area of the property to be built on to the nature of the immediate surroundings and the infrastructure is secured.
Type is residential building – all neighbors apparently are as well => undisputedly fits in
Extent is footprint, floor area, number of floors, eaves and ridge heights – with the only specification so far of 150m² living space, a planner should manage that
Construction method present and desired is open => fits
The only uncertainty factor is the buildable plot area and here only the rear building boundary. So the question is whether the building body would be permissible under planning law like this:

If the decision is positive, the rear building boundary would be accepted.
Infrastructure is secured by land register (in the worst case, the necessary servitude could be legally enforced).

Prefabricated house is off the table then.

I do not see it that way at all.

... and I can’t get 150 sqm of living space there either, without a complete attic development.

Yes, for such a large bungalow with only one living level, the plot is not suitable.

But then we can also stay in our semi-detached house.

Sure, if the new building otherwise offers no advantages, e.g. location, detached, brotherly love, garden, transport connection.

I haven't quite got the hang of quoting yet ... so below in several posts:;)

No right of way? Yes, there is also a right of way registered. Same line.
We had the easements registered at the time of purchasing the property with my brother. Thanks for the hint. I hope this is correct now.

Yes, it exists. However, I consider the lady's interpretation untenable. My "worst case" interpretation:

Interesting building structure. What would the exterior dimensions be? Do I get around 150sqm with a one-and-a-half-story design? Such a building is probably significantly more expensive :-( ... we need to be careful with our budget.

uGB Within the locally developed districts, a project is permissible if it fits into the character of the immediate surroundings in terms of the type and extent of structural use, the construction method, and the plot area to be built on, and if access is secured. The type is residential building – apparently all neighbors are as well => unquestionably fits in The extent includes ground area, floor area, number of floors, eaves and ridge heights – with the only known specification so far of 150 m² living space, a planner should be able to manage that The construction method present and desired is open => fits The only uncertainty factor is the buildable plot area and here only the rear building boundary. So the question arises whether the building would be legally permissible in terms of planning:

Well, that would of course be better that way. If I submit a preliminary building inquiry, I only have to decide on one of the two scenarios. I’m afraid that if I request this building envelope, it will be rejected and, worst case, something will be imposed on me. Maybe it’s better to make a “compromise” between the two as a preliminary building inquiry?

For a formal building application, I already need a lot of information. For that, the ground area must be fixed, and that again depends on the building envelope. I’m going in circles here o_O ... or at least that’s how it feels. So it’s good to get an opinion from you :-)