Construction stop by authority and demanded repair

What would now be interesting to know is: What are the approval prospects for the necessary [Tektur]?

About 2 months after the approval by the district office, we urged the change of builder, as this is also stipulated in our notary contract.

Feel free to explain that ;-)

Greetings all, we have finally overcome the hurdle with the [Landratsamt] and received our approval. Since our basement was now in an unfavorable condition for further activities, we created so-called defect reports to document the deficiencies and sent them to the general contractor. Instead of addressing these obvious defects, we were forbidden from entering the construction site. He justified this by stating that he is registered in the land register in the so-called first rank and that we therefore have no right to enter the construction site. Slowly, we just don’t understand the world anymore.

he justified this by saying that he was registered in the land register in the so-called first rank

??? I don't understand. If he is a general contractor, he has no rights to your property at all. Or is he really a property developer this time?

There are a total of two companies, one is the so-called planning office and is registered first in the land registry until the house is completed. The other company is responsible for the construction of the building. Since both are related to each other, there is a certain connection. Our defect reports have always been addressed to the company responsible for the construction. But responses (below the belt) have always been received from the planning office. Together, these two act as a general contractor / property developer. I think the problem is that we are only registered second in the land register.

Sounds like an unhealthy mix of the disadvantages of a developer construction model with the risks of building on your own land using a general contractor. You should discuss all steps with a lawyer; you will hardly get any help here in the forum.