I once called the KFW. I am supposed to upload the building permit under "Sonstiges" alongside the land registry, registration certificate, and tax documents, which each have their own upload section. Hmpf. Strange that nothing is mentioned about this anywhere.
That had also puzzled me. Thanks for the info!
I left out the third section of the land registry. Does anyone know if that's okay? It only contains the land charge.
It is even more complicated for us:
02/01/2019 Move-in with prompt registration confirmation
02/25/2019 Newborn
03/12/2019 Application submitted
Now they wanted the registration certificate for all family members living in the house. Of course, our newborn is not included on the registration certificate. As a precaution, we obtained an updated certificate because we didn't know if a birth certificate would also be accepted.