Floor plan single-family house 150 m² 448 m² 1.5 stories

Aren't there skylights drawn in all the bedrooms on the upper floor? That's what it looks like to me.

Oh, I think you're right. I didn't recognize the light gray rectangles as skylights; it's just that I'm not very good at reading plans. Thanks for the info. Then the rooms must all be nice and bright. :)

Aren't there skylights marked in all the bedrooms on the upper floors? That's how it looks to me.

Then they are included in the house price. Great!

Similar reports like the one from Gabriele I have not found. I also couldn't find any other people. Maybe it's just too late at night for stubborn searching

That is certainly due to the late hour - however, not all franchisees are useless either.

Finding similar negative reports can be difficult if the legal department works better than the craftsmen.

It seems to me that some big names' franchise partner recruiters prioritize growth over quality.

You really don't have to look for him. You can see him even if you don't want to build at all, he builds so many houses.

I didn't mean how the OP actually came across Heinz von Heiden, yes of course you can't overlook them. But how he still ended up with exactly them when he has been reading here for quite a while and already gone through many anxious homebuyer questions from all sides.

Thermal envelope yes, due to missing windows and the lack of possibility to go further upwards (limit ridge height about 9m) the room height with 2.30 m is too low for a living space according to the standard.

Would a higher basement be problematic over the allowed height of the upper edge of the finished floor on the ground floor, or do you have an absolute reference height that would conflict with that?

Could you please explain what you think the lack of care consists of?

In the basic attitude of sending homeowners with three children to sleep or work in the basement. The typical floor plan ;-) is designed for one to two children and nowhere is it possible, due to space being too tight, to adjust the children's room area through a different layout. Consequently, instead of starting from a budget-fitting model, you have to take a smaller one that is then extended in the ridge direction. Here the provider probably preferred the path of a typical "sales planning" :-(

That is certainly due to the late hour - however, not all franchisees are useless either.

This is not a franchiser

has already exhausted some anxious builders' questions from all sides.

Gabriele... and one more... And? The houses I know are all finished without any significant problems. Good experiences are just rarely posted.
However, one should build with experts, then nothing stands in the way of building a house with Heinz von Heiden.

How high is the attic? Actually, it bothers me that 1 room is missing

The attic is officially not allowed to be converted into living space, i.e. a window is not possible. It is also not high enough. So the one room (whether office or master bedroom) must be in the basement. I prefer to move the bedroom to the basement, and as writes, living down there can’t hurt either. It’s kind of funny when a child wants to go all the way down to the parents at night :)

The attic is officially not allowed to be converted into living space, i.e. windows are not possible

Such nonsense. The correct thing is: it must not become an official living room. Nevertheless, you are allowed to convert it and use it for hobby purposes or as an office. You can install windows anywhere, whether double casement windows or a small square or triangle at the top in the gable. After all, windows in the attic are allowed. However: Heinz von Heiden will offer you a non-accessible cold roof. Ask how expensive it is to have the attic accessible and insulated (full, not cold roof).