ᐅ Opinions on Floor Plan Design (Isometric Views, Floor Plans, Development Plans)

Hello everyone,

We are currently designing the floor plan for our single-family home ourselves on the recently purchased plot (parcel 13). Since the development plan and the building envelope already provide clear guidelines, we have tried to make the best use of these limits.
Besides the 6m (20 feet) wide double garage (at least for 2 cars), we can use up to 9m (30 feet) for the house width within the building envelope.
This means the house will have to be longer in the north-south direction.
Because the garage is located on the east side and attached directly to the house, we have tried to place rooms that need less natural light there.
The garden faces south and, as you can see in the plan, offers plenty of space which we would like to bring into both floors with many windows.

I would appreciate any suggestions you might have or, ideally, a confirmation that the plan looks quite good as it is.

Best regards,
Thomas

Here are the answered questions:

Development Plan / Restrictions
Plot size – 740 square meters (8,000 square feet)
Slope – minimal, approx. 1%
Site coverage ratio – 0.35
Floor area ratio – 0.5
Building envelope, building line, and boundary – according to the plan
Border development – neighboring property
Number of parking spaces – 2
Number of floors – 2
Roof style – gable roof
Architectural style – modern
Orientation – north-south
Maximum heights / limits – 5.5m (18 feet) eaves height from top of ground floor slab
Other requirements

Homeowner Requirements
Architectural style, roof type, building type – exposed roof structure, clear lines
Basement, floors – basement plus 2 floors
Number of occupants, age – currently 2 adults, in a few years +2 children
Space requirements on ground floor and upper floor
Office: family use or home office? – small office/guest room
Guests per year – rarely
Open or closed floor plan – open living area
Traditional or modern construction – simple
Open kitchen, kitchen island – open
Number of dining seats – 1-2
Fireplace – no, due to heat pump
Music/stereo wall – not decided
Balcony, roof terrace – large terrace
Garage, carport – double garage
Utility garden, greenhouse
Further wishes/special features/daily routine, including reasons for choices or exclusions

House Design
Who created the plan: – own design
- planner from a construction company
- architect
- do-it-yourself – tiling
What do you particularly like? Why?
What do you not like? Why?
Cost estimate according to architect/planner: €400,000-500,000 without land
Personal budget for house including fittings: €500,000
Preferred heating technology: heat pump