Floor plan of a single-family house in L-shape with approximately 155 sqm

[*]Ground floor: living kitchen, living room somewhat separated, guest WC with shower, guest room/office, cloakroom
[*]Upper floor: 2 x children's rooms, master bedroom with dressing room, family bathroom
[*]Office: home office 2-3 times per week

[*]Which optimization measures can we still consider?
[*]How could the traffic areas be further reduced?

Hello everyone,

thank you very much for your support and constructive suggestions.

Question catalog:

Development plan/restrictions
Size of the plot: 540 sqm, approx. 28.4m x 18.7m
Slope: No
Building window, building line and boundary
Edge development: Only garage
Number of parking spaces: 1 parking space in front of the garage.
Number of floors: 2
Roof shape: Hipped roof with inclination between 15° - 30°
Style: Single-family house
Orientation: South
Maximum heights/limits: 10m
Further requirements: Local heating

Requirements of the builders
Style, roof shape, building type: Single-family house, Tuscany style with hipped roof in L-shape
Basement, floors: Basement + two full floors
Number of persons, age: 2x between 30 – 35.

Space requirements in the

[*]Ground floor: eat-in kitchen, living room somewhat separate, guest WC with shower, guest room/office, cloakroom
[*]Upper floor: 2 x children’s rooms, parents’ room with dressing area, family bathroom
[*]Office: home office 2-3 times a week

Overnight guests per year: only when someone is unfit to drive.
Open or closed architecture: living area open; the other rooms closed.
Conservative or modern construction: modern
Open kitchen, cooking island: open kitchen with L-counter.
Number of dining seats: min. 6
Fireplace: yes
Music/stereo wall: no
Balcony, roof terrace: no
Garage, carport: garage
Utility garden, greenhouse: family garden

House design
Who created the plan:
-Do-it-yourself
What do you particularly like? Why?
Open construction, living room is still separated and could later be divided again with a room divider.
What do you not like? Why?
-open for suggestions.
Price estimate according to architect/planner: unknown.
Personal price limit for the house, including equipment: house with outdoor facilities max. 500k
Preferred heating technology: no choice, local heating is prescribed.

If you have to give up, on which details/expansions
-you can give up: office on the ground floor.
-you cannot give up: basement

What is the most important/basic question about the floor plan summarized in 130 characters?

[*]What optimization measures can we still consider?
[*]How could the circulation areas be further reduced?

Let's calculate conservatively without much ado:

House costs: €2,500 x 155 sqm = €387,500
Basement: €80,000
Additional construction costs: €50,000 (House from the developer or own? If from the developer, a few €10,000 of property transfer tax will be added).
Outdoor facilities for the start: €25,000
Garage (if not included in the 155 sqm): minimum €25,000.
Total: €567,500

Is the budget including incidental construction costs?
It won’t be enough for all-in
Are the parking spaces permitted according to the development plan or regulations?
Please draw in all the furniture to scale once.
Dressing room, bedroom with corridor takes up a lot of space
Wardrobe is missing
More later