ᐅ Single-family house with a pitched roof – any suggestions for improvements?

Hello everyone,

I have been following this forum for a while and would like to introduce our project. We are still relatively at the beginning and plan to start at the end of next year. We have now received the first draft from a general contractor, with whom we will probably build.

1. Fundamentals:

Development Plan / Restrictions
Plot size – approx. 1200 m² (14,580 sq ft)
Slope – slight, see preliminary site plan
Site coverage ratio – no specification
Floor area ratio – no specification
Building envelope, building line and boundary – no specification
Edge development – no specification, 5 m (16 ft) wide strip on the east side
Number of parking spaces – no specification, 2 desired
Number of floors – 1 full story (Hesse)
Roof style – no specification
Architectural style – no specification
Orientation – main orientation north-south specified, approval for east-west orientation is available
Maximum height / limits – none
Other specifications – none

Requirements from the builders
Architectural style, roof type, building type – classic gable roof, 1.5 stories
Basement, number of stories – not planned, not necessary
Number of occupants, ages – currently 2 (30, 25), planned 2 children
Space requirements on ground floor (GF) and upper floor (UF)
- GF: living room, kitchen, utility room, guest bathroom with shower, office
- UF: master bedroom with dressing room, bathroom, 2 children’s rooms, 1 hobby/storage/pantry room
Office: family use or home office? – home office
Overnight guests per year – negligible
Open or closed architecture – good mix, leaning towards open
Conservative or modern construction – rather conservative
Open kitchen, kitchen island – yes (or “half” island)
Number of dining seats – at least 6
Fireplace – not planned
Music/sound wall – not planned
Balcony/roof terrace – not planned
Garage, carport – yes, both
Utility garden, greenhouse – later
Other wishes/special features/daily routine, also reasons why some things should or should not be included – parents sleep on the east side, kitchen on the east side. Views to the east and south are completely unobstructed.

House design
Who designed the plan – planner from a construction company, based on our ideas
What do you particularly like? Why? – ground floor well realized, open entrance area, covered entrance as a solution combined with carport/garage, ample space, “south facade”
What don’t you like? Why? – upper floor not yet 100% right, children’s rooms are too different in size, gallery too large
Price estimate according to architect/planner – not yet available
Personal price limit for house, including equipment – 380k
Preferred heating technology – geothermal with underfloor heating

If you had to give up, which details/expansions
-you can give up: size of office, pantry, third room in UF (or size of that room)
-you cannot give up: bedroom with dressing room, office on ground floor, covered entrance

Why has the design ended up this way?
We told the planner our wishes (number of rooms on GF/UF, orientation of rooms). We gave no specifications about floor plans, room sizes, etc. He implemented our requirements based on that, which has mostly worked very well.

What is the most important/basic question about the floor plan in 130 characters?
1. Major flaws/general improvements?
2. Solution for UF to have nearly equal-sized children’s rooms?

2. Slope / Basement
How do you assess the slope situation on the plot? So far, we have not considered a basement necessary, but after the survey, we would like to check if it might make sense. Some areas would need to be filled, others excavated.

3. Files
Attached – all oriented to the north

Thanks in advance and best regards