ᐅ Single-family house floor plan of approximately 150 square meters on a plot located behind other properties

Hello housebuilding forum members,

I enjoy reading this forum and would like to share our planning for discussion. Our plot is designated as parcel number 173/6.

Development Plan / Restrictions
Plot size: 498 m² (driveway approx. 60 m² (645 sq ft))
Slope: No
Site coverage ratio: No development plan (§34 Building Code)
Floor area ratio: No development plan (§34 Building Code)
Building envelope, building line and boundary: 3 m (10 ft) from plot boundary according to Bavarian Building Regulations
Edge development: none
Number of parking spaces: 1
Number of floors: 1.5
Roof type: Gable roof with a pitch of 40-45°
Architectural style: Single-family house
Orientation: Ridge line East/West
Placement on the plot: Northwest
Maximum height / limits: approx. 9 m (30 ft) (§34 Building Code)
Immediate neighbors: North neighbor 1.5 floors with gable roof. South neighbor single floor with hip roof. West neighbor 1.5 floors with gable roof. Next-nearest neighbor south 1.5–2 floors with gable roof and knee wall >1.2 m (4 ft).

Owner’s requirements
Style, roof type, building type: Gable roof, knee wall 1.4 m (4.5 ft), single-family house
Basement, floors: Usable basement (concrete), ground floor, upper floor
Number of people, age: 4 (2 adults + 2 toddlers)
Room requirements on ground and upper floors: Ground floor (kitchen, living room, shower bath, wardrobe, office), upper floor (2 bedrooms, 2 children’s rooms, bathroom)
Office: Home office
Guest bedrooms per year: 0
Open or closed architecture: Tending rather closed
Conservative or modern construction: Modern
Open kitchen, kitchen island: Yes, no kitchen island
Number of dining seats: 6–8
Fireplace: No
Music/sound wall: No
Balcony, roof terrace: No
Garage, carport: Garage or carport
Utility garden, greenhouse: No
Additional wishes / special features / daily routine, also with reasons why some features are wanted or not:

House design
Planner:
- Do-it-Yourself
What do you particularly like? Why?: Shower niches in the bathrooms, large children’s rooms facing west, L-shaped living-dining area instead of a narrow layout
What do you dislike? Why?: Upper floor bathroom, office located in the southeast instead of northwest
Cost estimate according to architect/planner: 580,000 EUR
Personal price limit for house including fittings:
Preferred heating technology: Air-to-water heat pump with underfloor heating.

If you had to give up, which details / extensions
- could you give up:
Office on ground floor (if replaced by usable basement space)
- could you not give up:
4 bedrooms

Why is the design as it is now?
Requirements and many attempts with our furniture. As much garden as possible on the south and east sides.

What is the most important / fundamental question about the floor plan in 130 characters?
How much clearance should be planned on the north side for the garage or carport? The passage should allow room for people and bicycles (bicycle shed planned behind the garage/carport). Is the overall design usable or have we overlooked something?

Best regards,
Hausbaurer