Our targeted floor plan - please provide assessments

To be honest, I am curious how Kern-Haus manages the separation of the land/house or whether you will have to pay taxes on the entire project.

How is this to be understood?

We are not buying the property from Kern; so why should we pay taxes on the house again?

Ypg, thank you for your assessment.

We have already had several conversations with the provider, also in person. We are aware that this is a base price, and we are also budgeting for upgrades. However, we are realists and do not want to overstretch ourselves; accordingly, we cannot plan 40,000 euros for windows and various extras. For the upgrades, 15,000 euros would be more like the limit for us given the current planning.

We will also view this house as a show house.

No, at this stage we are not committed to this provider. But in general, I find that the floor plans for single-family homes are similar even among different providers and that the sizes of the rooms are not fundamentally different. The typical single-family house with a pitched roof does not provide for children's rooms of 20 sqm, excluding free planning. And the living-dining area is almost always around 32-34 sqm.

We have also considered whether switching to a different roof shape would bring much in terms of square meters.

I don't think so, because the main bottleneck isn't upstairs, but down in the kitchen. Also, there is a lack of storage space. Therefore, I would forgo the basement and garage and build the house a bit smaller for half the cost.