Floor plan draft designs - What do you think about it?

Actually quite nice! Remove the shower on the ground floor, if then put it in the basement, in case something like a guest room or sauna room is planned there. Remove the airlocks! Pantry as wide as the bathroom. So straighten everything on the top right corner and plan a nice kitchen with an island! Upstairs in the children's bathroom I would also do it for unclear reasons because of the noise. On the wall to the children's room, a sink and bathroom furniture, keep the tub, enlarge the bathroom somewhat towards [Ankreiden] and on the right wall plan shower and toilet. Enlarge the [Ankreiden] towards the parents' bathroom, however, and also replan the parents' bathroom a bit. I would plan the sink on the wall to the bedroom and the shower deeper but shorter. I hope you understand what I mean.

Hello,
I also find the floor plan very nice. Nevertheless, I have three remarks:

[*]I would leave out the shower on the ground floor. You have two on the upper floor, which is enough for four occupants. You don’t have a guest room on the ground floor, so in my opinion, you don’t need a shower there either.
[*]I think you have too many doors. Almost every room has at least two. This significantly limits your usable space. I would reconsider here how the typical walking paths are and where you really need a door / or airlock.
[*]The stairs initially confused me. I understand that you don’t want the basement stairs in the living room. But do you really need a basement stairway in the garage and one in the hallway? I would look for another solution and use the space more sensibly.

I would fundamentally revise the floor plan:
- 3 staircases, also located at different places, are impractical, expensive, and divide the floor plan. The second staircase from the basement to the garage is, in my opinion, dispensable.
- I would stack the basement/ground floor and ground floor/upper floor staircases at the same location and limit the width to 2.01 meters clear width, e.g., as a half-turned staircase without a landing with a 90 cm tread width and 20 cm stairwell. This is sufficient for a single-family house and saves space. Having the two staircases at the same location has the advantage that the living area remains free of internal traffic; this is especially practical when child 1/2 reach the friend/friendess age and want to come and go undisturbed even at unusual times.
- On the upper floor, I would place child 1/2 and the parents' bedroom on the right side. I also do not necessarily consider two bathrooms to be necessary. Instead, one bathroom could then be somewhat larger.
- In principle, the kitchen/bathrooms should be arranged close to each other to have the shortest possible routes for the installation runs. As they are currently arranged, the piping layout will be very confusing or possibly will not work at all once thought through in detail. Drainage pipes are arranged in installation walls or in the ceiling void but not under the ceiling in a living room. Moreover, the arrangement of, for example, the soil pipe down to the basement—and thus also the arrangement of the bathrooms/kitchen—significantly depends on where the sewer connection is at the property boundary. The connection to the house should always be as linear and as short as possible.
- The arrangement of the sanitary elements in the bathrooms/kitchen should also be done so that supply and drainage lines have the shortest possible routes and can be routed concealed. Arranging them on many different walls/wall sections is always impractical.
- In this context, the house connection room is missing in the basement.
- All drainage points in the basement (shower/toilet/washing machines/floor drains etc.) may be below the backwater level (street surface or the height of the nearest sewer cover downstream) and must be equipped with backflow preventers (also for wastewater containing feces: electronic, expensive) or discharged over the backwater level with lifting stations.
- In your place, I would first obtain the sewer plan, inquire from the utility companies about the location of the supply lines for electricity/gas/water in the street at the property boundary, and then align the planning of the installation routing accordingly.

In the floor plan design, the issue of installation routing plays (unfortunately) a central role from technical and economic aspects.

Basically a nice floor plan, but the hallway on the upper floor is in my opinion far too narrow.

If I’m seeing this correctly, it’s just 1.13m in width. If these are raw construction measurements, a few centimeters for plaster will also be deducted.

How are the furniture supposed to get around the corner by the stairs? I see transporting the parents’ bed into the bedroom as not feasible. It gets even more interesting with "Child 2".

Wow, thank you very much for your suggestions. I will definitely take some of them into consideration. The hallway, for example, is absolutely right and hadn't occurred to me before. The shower on the ground floor is a nominal item. We would like to keep the airlock, since when entering through the garage, wet clothes or shoes can be taken off immediately and thus not end up in the pantry with the food.

What do you think about the price?

Where do you want to put something down in the locks? The second person coming in will already trip over the first few shoes lined up??? No point!