Spacious single-family house planned over 200 sqm

Which concrete ceiling should be saved in a knee wall house? We previously had a house with a knee wall, now a two-story house with a hip roof; the number of concrete ceilings is the same. The ceiling on the upper floor is made of wood. Regarding your floor plan, I have to say it is drawn as if money is no object. I see about 230 sqm of living space + cellar (probably of living quality since it has a guest room), so the 450,000 euros are gone just for the house. For the huge cellar, surely another 100,000 euros (utility cellar; a living cellar is more expensive and requires heating installation). Additional construction costs, double garage, and outdoor facilities will add on; total of 600,000 euros will not be enough. On the upper floor, it immediately strikes me that there is no cozy parents' area. You walk from the dressing room with your clothes back into the bedroom, then out into the hallway and into the bathroom, and later back again. The partner can never sleep longer this way and will always be disturbed. Given the house size, I would definitely plan a parents' area with its own bathroom and an additional children's bathroom, that is, swap the bathroom with the study on the upper floor to get one side of the house for the parents. If a children's bathroom is not yet needed, I would at least provide a room in the upper floor for it, which can be quickly converted later. In our first house, we had a cellar, and it's so nice not to have one anymore. With two children here, I have to do laundry every day, and it is great not to have to go down to the cellar all the time. We have enough storage space with cabinets and the attic. You eventually fill a cellar only with things you don't actually need anymore. We don't miss the cellar one bit! You also need to reconsider your window sizes; a 14.5 sqm bathroom with a 1m wide window is pitch dark, I would plan at least 1.50-1.80m. Likewise for your windows in the hallways on the ground and upper floors, how is daylight supposed to come in there? First, you should reconsider your budget: do you have well over 600,000 euros available or would you rather plan a bit tighter? Only then is it worth planning in more detail; your kitchen planning also looks like nothing so far. Best regards Sabine

But at my parents' house, part of the wood was in the basement (Nebenraum Heizung). Back then, when the heating was still powered by wood. It was quite practical. You just had to add wood a few times a day. The cats had to go into the room regularly and do what cats do.

Wood for the tiled stove was kept dry on the terrace and one or two baskets in the house.

ok .. but I only know wood for the fireplace stored outside, protected from the weather.

But at my parents’ place, part of the wood was stored in the basement (adjacent to the heating room). Back when the heater was still wood-fired. It made sense. You just had to add wood a few times a day. The cats had to go into the room regularly and do what cats do.

I believe the houses back then were less well insulated and overall a bit draftier as a result. Best regards Sabine

There is wood other than firewood. Drying chamber and instrument making as a hobby? Turning, carpentry, other crafts... I wouldn't get too worked up about that. If cost efficiency plays a role – and the reason for the high knee walls suggests that – you can get a lot out of a professional alternative design without functional loss. If the division and running routes were exactly liked by the cousin, that's also OK because the design has no major flaws.

I consider the bathroom on the ground floor very usable in terms of size and layout...

When I wrote that, I hadn't seen the line of the wall but assumed a slanted wall (here: door) and a meter of shower space. However: with a proper wall and plaster, we are then also at about 1.30... doable, but with 4 meters length again not a nice room, just using the squares.

Wood for the tile stove was kept dry on the terrace and one or two baskets in the house.

The planning of the basement here is that of an old basement of a family from the post-war period. But even that has its justification from time to time

because the design has no major flaws.

Except for too few windows and stove location and patio door in the kitchen and the missing walls and... the economic efficiency. The Sims houses also have no planning errors.