Floor plan optimization - Planning of a semi-detached house approximately 200m² living area

... and the demolition costs are already included in the budget? Necessary safety measures can easily amount to 20-30K. If things go badly, even significantly more. Excavation of soil was separate, too. I see a large volume of soil. Maybe 600m³ (13*16*3 ... including construction space / slopes). Disposing of 600m³ at the landfill costs so much depending on the soil and area that your budget will easily be exceeded. Storing and reusing it on the property will also be "tight" space-wise. For this area, I would get very detailed (fixed-price) quotes :cool:

Carrying out a complete renovation like next door is not an option for you? I could understand that, but sometimes I think money doesn’t matter for many people with the motto: "Oh honey, let’s just buy a house ...". The price difference between a complete renovation and a new build is sometimes not big depending on the situation...

For the demolition costs, we have estimated about 35k. The excavation/earthworks are already included in the price (€480,000), I was mistaken about that in the first post. However, the disposal of the excavated soil is indeed additional. Since a basement has already been excavated, only the disposal of the additionally required excavation should be added. We also considered a gut renovation during the day. We had an expert come, who said that a gut renovation probably would not be much cheaper than a demolition + new construction (e.g., major construction site: damp basement needs to be dried out).

Regarding the remark about the nested rooms: Personally, I don’t really like these rectangular floor plans with a bed, table, and wardrobe, especially in the bedrooms. Intelligently designed niches, where for example a small walk-in closet fits and which prevent the entire room from being visible at once, I find much cozier (and the children probably do too). I would never voluntarily do without a separate dressing room and an ensuite bathroom again for myself. That’s why we are planning it exactly the same way in our new house.

You can definitely plan that upstairs with a rectangular hallway! One of the children's rooms has about 2-3 sqm less, practically its own hallway. I don't see a wardrobe in the bedroom, nor a proper place for one. You would really have to improvise and accept tight spots. How many centimeters does the "couch" have to the TV? I also find two dining tables side by side pointless, unless there is a kids' table and an adults' table ;) I don't find the rooms well distributed in that respect. Sorry to say it like this: To me, the house seems like you plan everything because you don't know what you want: four floors for currently 2 people who are supposed to become 4 - you first have to walk the stairs, overcome them, and also endure the noise. It's okay if you need the entire area, but then I miss sensible zoning. From the outside: the third gable, rooftop terrace, conservatory, floor-to-ceiling windows with bars, balcony... phew, you could say: "Style: none" I like it spacious, appealing, and furnished in a straight-line manner, so I have nothing against space, but at the immediate house entrance, it starts to get cramped because of the staircase position right at the entrance and opposite the wardrobe niche - who wants to constantly walk past there? For me, that would be a reason not to buy the house, having to constantly walk upstairs with sand and crumbs on socks. I would prefer it cozier and more private, rather than always passing by the door. The wardrobe is planned only in a small way and not really designed to be cozy. Also opposite the stairs and directly at the front door, that's not nice in real life. The offset to the living room door may not bother some - I don't find that successful at all. Then a sliding door is supposed to run along the sofa? And the person watching TV should sneak up and scare them? The kitchen would be U-shaped with cutbacks left and right and a small island in front, which would be too puny for "modern" and for the size of the room. I would stage it more and arrange it in a more straight line (straight line doesn't mean straight, but without abrupt side views). You see the upper floor yourself. Personally, I would arrange the entrance area more thoughtfully. Staircase as a platform staircase at the partition wall and as an eye-catcher, visible also from the dining area. Wardrobe hallway where there is space for a large built-in closet and still space for a bench and chest of drawers. Nice line of sight into the open-plan area. Pantry or storage room... with about 10 sqm less area, you can zone better in the open-plan area and still have spaciousness instead of "just big". Kitchen at the terrace with seating area at the counter, then there is only one dining table in the room. If you like cooking, I would relocate the kitchen partly into the conservatory. In the upper floor I would make the rooftop terrace accessible from the hallway, since no one uses it anyway. Then each family member benefits and the hallway itself offers a highlight. Instead of the bedroom, the office or guest room. In the attic then the parents' area, which could also include a home office. But keep in mind that the sloping ceilings limit you: thus a lot up there is not feasible, even though it is drawn in, e.g. table or access to the dressing room, you would have to crawl ;)

Exactly, the master bedroom is planned in the attic.

I’m reading that now, it looked different on the floor plan.

Thank you very much in advance for all the feedback and the constructive criticism!

I have taken up some points and tried to revise the floor plans (see attachment).

EG and DG do not work:
The sliding door on the right side of the ground floor has no wall.
The staircase is too short. The seating area is borderline small.
In the attic, the staircase and the toilet do not comply with the rules of technology (2-meter line). In the area under 2 meters height, one can still move, but only 50cm, then only bent over, crouching, or crawling.