Opinions on the single-family house with a granny flat floor plans

... there is a utility connection room next to the two utility rooms on the ground floor.

, the right-side child's room only has a northeast-facing window, so it's dark. Is the window planned to be floor-to-ceiling? Unfortunately, this cannot be deduced from the plans, but it wouldn't be so great right next to the bed.

And the room under the slope is also not so well usable with the shallow roof pitch.

Storage hose ... I also estimate only about 100 cm. I consider a storage area on the upper floor to be sensible, but it should be better usable.

Parents' dressing room .. yes, but there are only about 450 to 500 cm of wardrobe, because corner wardrobes are always hard to use.

What just occurred to me, the parents' bathroom has very few windows, although according to the facade image there should apparently be a window with a high sill on the right side above the bathtub ... hmm.
Children's bathroom .. the sink seems to be only a mini sink .. together with the privacy screen in front of the toilet, it could get tight there.

The bedroom in the granny flat was also slightly redesigned... the drywall is gone, bed on the other side, and wardrobe on the north wall.

Sketch it out ... but that's still only about 200 cm of wardrobe, right? And then the entrance at head height?

Treatment room? With customer traffic?

The dormer is for the attic, initially only planned as storage. But when the children are older, it should be converted so that you can normally get upstairs, the dormer and for lighting the room.

Show a cross-section ... is there any usable area with sufficient height besides the dormer area at all?

Sorry, yeah... I see :)
The storage space upstairs is too narrow, not really usable. I would equip every children's room with an American-style wardrobe... or built-in shelves for one room... they only have about 12 actual square meters.

No, the children's rooms have 15 sqm, floor area would be about 19.5

Oh yeah .. just about the kitchen .. yes, you might be able to fit the oven under the stairs, but the refrigerator would probably be in the tall cabinet wall .. and normally the workflow is Cooling - Washing - Preparing - Cooking .. take a look at that as a pattern of movement.

no, the children's rooms have 15 sqm, floor area would be about 19.5

A plan with measurements would be MORE than useful ;). I would have guessed similarly to Yvonne.

On the plans where the measurements are, names, addresses, etc. are already on there. I will shade it for Morgan and upload it, just like the kitchen I planned.

The section is still old, so without the attic conversion... but you can already see that it wouldn't be easy to get up there.

The .... line is 2 meters again. Where the drywall is, it is 1 meter

What a luxury place :- )
Hats off to living with the parents

How many m2 does the house have?

That's going to require a lot of money invested.