May I ask why you are not building bigger? Does the development plan not allow more? With the (quite large) plot, maybe more would be possible? We have about 100 m² floor area on 600 m² of land, and in hindsight, it would have been nicer to have more space in some areas! What I would also miss in your house would be an office/guest room on the ground floor. Of course, that again requires a larger house. Even if you don’t work from home, etc., it is nice to have a room where you keep folders and handle mail or where guests can comfortably stay. Otherwise, I also agree with many others here that the living room width is too small. We have 4.3 m, and it is just enough so that it doesn’t only look like a place for watching TV. There is still enough space between the sofa and the TV to walk around, so the children could play in front of it, etc. In our apartment, we had 3.4 m, and it was already very cramped. I wouldn’t want that again, especially not in a new build. I think there might be ways to gain the 1 m through a layout change?