ᐅ Single-family Home with Basement on a Sloped Site – Opinions (Roof Design, General)

Hello,
we are currently planning our single-family house.
Due to the sloped site, it will have a ground floor, basement, and lower ground floor.
Because of the view, we decided to place the living area on the top floor.

Key data and our requirements:
- Number of floors: 3 (due to the slope)
- Living area: approximately 140–150 m² (1500–1600 sq ft)
- Roof style: must suit the house (flat or shed roof not allowed as per building permit / planning permission)
- 2 children’s bedrooms
- Living area on the top floor
- Provision for a fireplace
- Separate toilet
- Terrace on the upper floor
- Double garage

Open issues:
- Final room layout
- Window arrangement
- Roof style (attached are two proposals)
- Wall construction
- Facade design

We would be very grateful for opinions and suggestions!

Personally, I don’t like either option. Somehow, nothing really fits together. Above all, you need a large budget for this kind of design. Nothing is standard anymore, and special structural solutions are certainly required. The fact that the garage isn’t built on a basement is nice and all, but you still have to construct foundations and fill in. Overall, in my opinion, the floor plan is also missing a few square meters to properly divide it across three floors.

Could you please fill out the questionnaire?

https://www.hausbau-forum.de/threads/grundrissplanung-unbedingt-vor-beitrag-erstellung-lesen.11714/

Why didn’t you include terraces with the house like @sichtbeton82 or @Mellina?
Of course, a flat roof isn’t possible and you are building smaller, but somehow it doesn’t appeal to me at all. Also, that the basement is really just expensive storage space—the room has garden access.

Where in Bavaria are you building?

Thank you for the quick response,
here are the completed details:

Development Plan / Restrictions
Plot size 700m² (7,535 ft²)
Slope yes
Building envelope, building line, and boundary: 5m (16 ft), except for outbuildings (garage)
Number of parking spaces 2
Number of storeys
Roof type no flat or shed roof
Style no specification
Orientation no specification
Maximum height / limits Absolute height specified → only 1 storey above street level allowed
Additional requirements Roof pitch 15-35°
Access only allowed from the east (see attachment, north-oriented image)

Homeowners’ Requirements
Style, roof type, building type modern, classical
Basement, number of floors 3
Number of occupants, age for 4-5 people
Room area on ground floor and upper floor ~150m² (1,615 ft²)
Office: family use or home office? Not mandatory
Overnight guests per year 1-2
Conservative or modern construction classical, modern
Open kitchen, kitchen island yes
Number of dining seats 8
Fireplace planned
Balcony, roof terrace terrace on upper floor
Garage, carport garage
Additional wishes / special features / daily routine, also reasons why certain things should or should not be included

House Design
Designed by:
- Design office
Preferred heating technology: geothermal

Why is the design like it is now? e.g.
Complicated plot: slopes down on three sides, distances to neighbors, street (see attachment, north-oriented image)
Nice view only from upper floor (neighbors)
Front part of basement possibly to be developed later

We planned only one large terrace because a second terrace accessible from the bedrooms would probably never be used and would, of course, involve additional costs.
Structurally, it should not be a problem; a structural engineer has already done a preliminary review.
We are well aware that building a house on a slope is more expensive than constructing a simple cube on flat ground.
Nevertheless, we made sure that all three floors, as well as the load-bearing wall, are aligned vertically (except for the section in the basement).

Building in BGL.

If possible, enlarge or widen the garage. It looks like it is 6 x 6 meters (20 x 20 feet). I have two future neighbors who are quite dissatisfied with a 6 x 6 meter (20 x 20 feet) garage. They would definitely make it wider.