A development plan does not only have to satisfy the builder but also cover points such as:
- local design
- urban planning
- compatibility with the locality
- connection to the infrastructure
- public spaces
- etc.
In some municipalities, the development plan also imposes a requirement for Kfw55 – of course, that costs more! Therefore: first read the development plan + soil survey -> THEN buy the property!
To emphasize again: there is not just one builder, but many parties involved (including neighboring developments) who are also affected by a development plan. All of this must be carefully considered. If the builder does not agree: either don’t build there or try to get exceptions. Changing the development plan as a private person is very expensive; I would advise against it.
By the way: every development plan must go through several public displays – every change to the development plan as well. Everyone has the opportunity to object to the development plan’s requirements. If no objections are made, the municipality thinks: great.
Example in our case: it was initially planned as a car-free zone – that is, a central underground garage and a residential area completely without traffic. After many objections to the development plan, this was changed during the preparation of the plan, and now everyone is allowed to have their garages in front of their houses again.