Floor plan optimization single-family house, 5 people, 8.5m x 17m, 250 sqm

Such an airspace gives an extremely great sense of space, we also have one and I am thrilled... We are currently installing an acoustic ceiling and that really makes a huge difference. But of course it doesn't help against kitchen smells.

I like the design. You have thought about how life should be and make confident decisions, such as the main entrance through the garage. Something unique has been created.

Gallery:
Those who love the feeling of high rooms will cope well with the limitations. Since you have the children's rooms directly adjacent to the upper gallery corridor, you will sometimes have to be more considerate with guests at the dining table than with a closed ceiling. The room acoustics can be managed well – I have the best experience with the LignoTrend acoustic ceiling, and others can surely also report. The gallery is a highlight of the house.

Garage:
That I myself would separate the garage from the house as proposed by – and actually prefer a carport… that doesn’t matter.
If the garage is to serve for 2 cars, children's vehicles, and the main entrance, it is far too small. Do you already have such a double garage in use? We had it that way in our terraced housing estate for over 18 years and only 2 children. Only one family with children parked their 2 cars in the garage, as the rest was used by children and stuff. That family had a bicycle shed in front of the door.
From my point of view, you make the living room too narrow in order to build a garage that does not correspond to the intended function. If that were the case, it would be a "lose-lose situation."

so that @11ant can park the Q7 and X6 in the garage widened by 1m.

Why do you name only two of the three ugliest bulky rich guys' cars, which I myself would only shyly park several corners away even if given for free, but never in my garages (and why, of the three, should the Mercedes R-Class be the one standing outside)??

Why do you only name two of the three ugliest fat boss cars

I let you drive the cars into the garage because you complained about the too narrow width of the garage, which you are right about, since the trend towards sporty commercial vehicles is unbroken and therefore the still prevailing standard double garage width is not enough for two tanks. For a third, the floor space ratio is not sufficient. In my last site plan, however, I did not draw the garage wider because the OP only wants to use it for two cars in exceptional cases and can therefore weigh whether to use the meter for the garage or the location or size of the house.

since you criticized the insufficient width of the garage,

I did not - I merely noted that the fantasy dimension of 527 cm rough construction width only fits if it is meant for two total three-lane vehicles. A one-and-a-half-car garage has an unfavorable premium-to-resale-value ratio.

A one-and-a-half car garage has an unfavorable price premium to resale value ratio.

On the other hand, this garage has exactly the size you need if you want to accommodate an entrance and children's vehicles. One car simply stays outside. Most cars nowadays are weatherproof without restrictions – at least 75% of the cars with us.