Here is an idea from us that has been in place for several weeks now. We are sharing it as a basis for discussion, as we might have become completely blind to potential mistakes by now.
Development Plan / Restrictions
Plot size: 595m² (approximately 6404 ft²)
Slope: 2-7%
Floor area ratio-1: 0.35
Floor area ratio-2: 0.45
Building window, building line, and boundary: 3 meters (10 ft) setback from the property boundary for the main building
Edge buildings: Allowed for outbuildings, garage, carport, parking space
Number of parking spaces: 2
Number of floors: 1 or 2 full floors
Roof type: 25-35 degrees; gable roof; hip roof
Orientation: no restrictions
Maximum heights / limits: 6.30 m (20.7 ft) eaves height; no further specifications
Requirements from the Homeowners
Basement, floors: no preference
Number of people, age: planned for 4-5 persons (29, 29, 1, and 1-2 more planned children)
Office: family use or home office?
Balcony, roof terrace: no
Garage, carport: 2 parking spaces; possibly a garage later at the same place (in x or xx years)
House Design
Planning by:
- Do-it-yourself by you
Ground floor:

Upper floor:

Attic as basement alternative / expansion reserve:

Plot layout:

Some simple views:



A few details:
- On the ground floor, there is a technical/storage room; possibly the gas boiler and hot water tank will be installed in the attic; this space could also be used to store some gardening equipment
- The staircase on the ground floor is designed so that the last two steps are recessed into the ceiling (concrete ceiling 20 cm (8 inches) + floor construction upper floor including ventilation another 15-20 cm (6-8 inches))
- We are still unsure about the type and design of doors from the hallway to the living area or kitchen (whether a standard door, a door frame without door leaf to the living room, or a sliding door to the kitchen, etc. A friend mentioned he would just paint the kitchen door :O )
- The kitchen layout seems decent; I have read that corners should be avoided where possible; depending on where the sink will be placed (possibly on the island or not), a good part of the cabinets on the right side in the kitchen could be tall cabinets
- The office is mainly for computer work and file storage; definitely not intended to be a full office
- Otherwise, the wardrobe at 2 m (6.5 ft) wide should be sufficient for daily use; if many guests come during winter, I can live with a few coats ending up in the office for that day
- Regarding the upper floor: possibly the partition between bedroom and dressing room will be a drywall (on screed); so it can be converted into a full third child’s room if needed (and the parents would move to the attic to sleep)
- Bathroom planning is certainly not final yet
- Utility room upstairs for dryer, washing machine, vacuum cleaner, storage, ironing (rarely for us), hanging laundry, etc.
- The attic is currently completely unplanned; serves as basement alternative; hobby room (fitness), expansion reserve; approximately 55 m² (592 ft²) of living space according to living space regulations (full count above 2 m (6.5 ft) height; half count between 1 and 2 m (3-6.5 ft)).
- Regarding the staircase: it is essentially staircase above staircase; possibly the attic staircase will have a quarter turn at the end
Development Plan / Restrictions
Plot size: 595m² (approximately 6404 ft²)
Slope: 2-7%
Floor area ratio-1: 0.35
Floor area ratio-2: 0.45
Building window, building line, and boundary: 3 meters (10 ft) setback from the property boundary for the main building
Edge buildings: Allowed for outbuildings, garage, carport, parking space
Number of parking spaces: 2
Number of floors: 1 or 2 full floors
Roof type: 25-35 degrees; gable roof; hip roof
Orientation: no restrictions
Maximum heights / limits: 6.30 m (20.7 ft) eaves height; no further specifications
Requirements from the Homeowners
Basement, floors: no preference
Number of people, age: planned for 4-5 persons (29, 29, 1, and 1-2 more planned children)
Office: family use or home office?
Balcony, roof terrace: no
Garage, carport: 2 parking spaces; possibly a garage later at the same place (in x or xx years)
House Design
Planning by:
- Do-it-yourself by you
Ground floor:
Upper floor:
Attic as basement alternative / expansion reserve:
Plot layout:
Some simple views:
A few details:
- On the ground floor, there is a technical/storage room; possibly the gas boiler and hot water tank will be installed in the attic; this space could also be used to store some gardening equipment
- The staircase on the ground floor is designed so that the last two steps are recessed into the ceiling (concrete ceiling 20 cm (8 inches) + floor construction upper floor including ventilation another 15-20 cm (6-8 inches))
- We are still unsure about the type and design of doors from the hallway to the living area or kitchen (whether a standard door, a door frame without door leaf to the living room, or a sliding door to the kitchen, etc. A friend mentioned he would just paint the kitchen door :O )
- The kitchen layout seems decent; I have read that corners should be avoided where possible; depending on where the sink will be placed (possibly on the island or not), a good part of the cabinets on the right side in the kitchen could be tall cabinets
- The office is mainly for computer work and file storage; definitely not intended to be a full office
- Otherwise, the wardrobe at 2 m (6.5 ft) wide should be sufficient for daily use; if many guests come during winter, I can live with a few coats ending up in the office for that day
- Regarding the upper floor: possibly the partition between bedroom and dressing room will be a drywall (on screed); so it can be converted into a full third child’s room if needed (and the parents would move to the attic to sleep)
- Bathroom planning is certainly not final yet
- Utility room upstairs for dryer, washing machine, vacuum cleaner, storage, ironing (rarely for us), hanging laundry, etc.
- The attic is currently completely unplanned; serves as basement alternative; hobby room (fitness), expansion reserve; approximately 55 m² (592 ft²) of living space according to living space regulations (full count above 2 m (6.5 ft) height; half count between 1 and 2 m (3-6.5 ft)).
- Regarding the staircase: it is essentially staircase above staircase; possibly the attic staircase will have a quarter turn at the end
The children’s rooms would be 16.42 and 17.16 square meters (177 and 185 square feet). Attached is a rough floor plan with a continuous hallway.

On the upper floor, top right on the plan, is the walk-in closet for the bedroom (whether the space between the bedroom and closet is open, a door frame, or a door is still unclear).
On the upper floor, middle bottom on the plan, is the utility room with the following functions in this order of priority:
- Washing and drying (dryer)
- Hanging laundry to dry on a drying rack
- Ironing
- Storage for vacuum cleaner; possibly a base station for a robotic vacuum
- Cleaning supplies
- Additional storage needs (mainly specific to the upper floor)
The cabinets shown are a maximum version, meaning they indicate that space is available for cabinets. The room will likely not be filled to this extent (among other reasons, because space for a drying rack should also be available).
On the upper floor, top right on the plan, is the walk-in closet for the bedroom (whether the space between the bedroom and closet is open, a door frame, or a door is still unclear).
On the upper floor, middle bottom on the plan, is the utility room with the following functions in this order of priority:
- Washing and drying (dryer)
- Hanging laundry to dry on a drying rack
- Ironing
- Storage for vacuum cleaner; possibly a base station for a robotic vacuum
- Cleaning supplies
- Additional storage needs (mainly specific to the upper floor)
The cabinets shown are a maximum version, meaning they indicate that space is available for cabinets. The room will likely not be filled to this extent (among other reasons, because space for a drying rack should also be available).
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