Draft single-family house with 3 children's rooms, basement, and boundary construction

Hello everyone.

After reading along for a long time, I may now also ask for your feedback. As can be seen from the questionnaire, the planning is currently designed solely by me. I can provide detailed dimensions if the representation using squares is insufficient.

Preliminary note:
- 1 square corresponds to 1x1m
- Northern wall is on the boundary and must be constructed as a fire protection wall.
- The dressing room does not need a window
- The small master bathroom could either have a fire protection window as shown, opaque due to the neighbor regulation above the toilet, or a strip window starting at 1.8m height across the entire room width.
- Light well in the office is more generous, but windows are not floor-to-ceiling
- Windows on the upper floor are not floor-to-ceiling
- Possibly an additional door after the wardrobe as a "windbreak," but this can certainly be retrofitted

I look forward to your feedback.

Questionnaire:
Development plan/restrictions
Plot size
420 sqm
Slope
no
Floor area ratio
0.4
Plot ratio
-
Building window, building line and boundary
West side 5m distance from the street, east side 3m from the boundary
The house north of us must also be designed as a terraced house, the house south of us is a normal single-family house plot. To the east there is an existing property with a garden and large hedge towards our plot. To the west is the access road. Behind the road towards the west it is and will remain undeveloped.
Edge development
Main building must be on the northern plot boundary
Regarding garage, carport no requirements are made in the development plan, i.e. this does not have to be on the southern boundary
Number of parking spaces
1.5
Number of floors
2 full floors
Roof shape
no restrictions
Style
no restrictions
Orientation
no restrictions
Maximum heights/limits
max wall height 6.5 m, max ridge height 8.5 m
Further requirements

Client requirements
Style, roof shape, building type:
modern, gable roof, terraced house
Basement, floors
basement desired, 2 full floors
Number of people, age
2 adults (32/31 years), 2 children (3/0 years), 1 additional child planned
Room requirements on ground and upper floor
3 children's rooms, office desired
Office: family use or home office?
both
Guest sleepers per year
rarely
Open or closed architecture
open, lots of light
Conservative or modern construction
modern
Open kitchen, cooking island
both yes
Number of dining seats
6-8
Fireplace
not necessary, but not opposed either
Music/stereo wall
no, living room will be used less for TV
Balcony, roof terrace
no
Garage, carport
yes, yes
Utility garden, greenhouse
no
Further wishes/special features/daily routine, gladly with reasons why this or that should not be
-

House design
Who created the planning:
Do-it-yourself
What do you particularly like? Why?
L-shape of living-dining area,
covered terrace
What do you not like? Why?
Upper floor in general not 100 percent (width of children’s rooms)
Price estimate according to architect/planner:
none available
Personal price limit for the house, including equipment:
450K (without land, without incidental building costs)
Preferred heating technology:
gas condensing boiler

If you have to do without, on what details/extensions
-you can do without: bathroom in the basement, dressing room, master bathroom
-you cannot do without: 3 children’s rooms, office, cooking island

Why did the design turn out as it is now?
It was created this way due to northern boundary development and the goal to have as much garden and terrace on the west side as possible

The house north of us must also be built as a terraced house,

also with the main building on the common boundary, so basically a semi-detached house, but adjoining on the eaves side ? ? ?

No, not a semi-detached house. Our northern neighbor also has to place his house at his northern boundary. He will certainly connect to our property with the garage. This would be typical for a terraced house formation, but it is not explicitly required in the development plan. There is only the note that the usual distance rules apply to the other boundaries.

I like it very much!! The kitchen is huge!

Super beautifully drawn

I also like the floor plan itself... but the staircase takes up too much space for me. A half-turned staircase would be much better. For example, this would allow the children's rooms to be slightly larger.