House on a slope with 2 granny flats

I would build the house without a granny flat

Basement entrance, cloakroom, study, building services, storage room
Ground floor cooking, eating, living, 1 children's room
direct garden access that opens up the summer living and dining area with a small play corner for the toddlers.
Upper floor remaining bedrooms with access to the garden from the corridor
there then develop the slope with a shaded play area
next garden level with south-facing terrace for the transitional period (because it is too hot in summer) Should be high enough and no longer shaded by the house.
Garage and house can swap places

If possible, I would plan 2 children's rooms in the basement and accommodate the two older children there.

Thank you very much for the interesting suggestion. So you would build the house on the southwest side of the property with only a small play corner for the toddlers facing southwest and the actual garden up north of the property? That somehow sounds backward to me because normally you orient yourself to the south. But we will think about it carefully again.

750,000 euros for such a large house, double garage, outdoor area on such a slope is very tight

Just the structural engineer caused a five-figure amount.

What are the soil conditions at your place?
Water
Soil class
Contaminants

From where do you access the upper parking spaces that will be lost

Yes, they say garden facing south
It is hardly bearable there in summer
Children should be protected from the sun
Your property is so high that you do not shade yourselves
You get window surfaces facing south to let light and warmth into the house in the dark season
1. Loss of the granny flat
The rent will hardly cover the costs, let alone the capital service
2. Position the house so that as little earth as possible has to be moved. Every shovel costs real money
3. The slope needs terraces
Therefore I would assign an outdoor area to every floor
4. Bring as little wall as possible into the ground
With us there is a thick wall made of waterproof concrete with lots of steel, which is insulated on both sides. Between the concrete wall and the soil there is gravel filled
Costs about twice as much as an exterior wall without soil contact
An au pair girl does not need her own apartment

Here in the middle of your upper floor, according to the labeling, the area of the stairwell and hallway towards the parents' room is 275 cm wide. You count the stairs with at least 200 cm width .. leaving 75 cm for the hallway and railing around the stairwell opening.

Also, your parents' bedroom is rather incorrectly dimensioned ... 293 cm wide and supposedly 105 cm between the bed and the wall to the bathroom ... so the bed including the frame is only 188 cm. I always plan something like this with 215 cm. 200 cm mattress plus bed frame plus the fact that in reality the bed is usually placed with a 2 to 5 cm distance from the wall. Although 293 cm is still enough, the distances should always be represented correctly.

Aside from that, the main pathway of your stairs is still opposite the sofa. Teenage children .. etc. everyone passes by the sofa.

750,000 euros for such a large house, double garage, outdoor area on such a slope is very tight

Uff. That is sobering, of course. Especially since we are also dreaming of quite a lot of home technology: low-energy house, photovoltaics, heat pump, underfloor heating, cistern, garden irrigation system, etc. We will probably have to cut back on quite a few things.

What are the soil conditions like at your place?
Water
Soil class
Contaminants

According to my father (civil engineer), very favorable. But the soil report is still outstanding.

From where do you access the upper parking spaces that will be lost?

From above there is also a small dead-end street that ends at our property.

Yes, they say garden facing south
In summer, it’s hardly bearable there
Children should be protected from the sun

We talked at length yesterday about your suggestion on page 6, but we came to the conclusion that the layout of the floors is better suited to our needs as it is: we want to concentrate family life on one floor with a garden, and the garden should be located directly next to the kitchen. The garden, as currently planned, lies in the rear part anyway in the shade, because on the southwest side we have to build a sloping wall towards the neighbor anyway so that their garden doesn’t come towards us. Also, much of the front area is shaded since the entire property is surrounded by trees.

2. Position the house so that as little earth as possible has to be moved. Every shovel costs real money
3. The slope needs terraces
Therefore I would assign an outdoor area to each floor
4. Bring as little wall as possible into the earth
With us there is a thick WU concrete wall with lots of steel that is insulated on both sides. Between the concrete wall and the soil, gravel is filled in
Costs about twice as much as an exterior wall without earth contact
An au pair girl doesn’t need her own apartment

Thank you very much for the tips, you are absolutely right. We have an appointment with the architect on Monday. I will ask him what is better: the house as currently planned or a house with a smaller footprint without a granny flat. We’ll see what he says; he gives me a competent impression and knows the location well.

Here, in the middle of your upper floor according to the labeling, the stairwell and hallway area towards the parents' bedroom is 275 cm wide. The stairs alone are usually at least 200 cm wide... leaving 75 cm for the hallway and railing around the stairwell opening.

Also, your parents' bedroom is rather mis-measured... 293 cm wide and allegedly 105 cm between the bed and the wall to the bathroom... so the bed including the frame is only 188 cm. I usually plan such a thing with 215 cm. 200 cm mattress plus bed frame plus the fact that in reality the bed is usually placed 2 to 5 cm away from the wall. 293 cm is just enough, but then the distances should always be represented correctly.

Thank you very much for the hint, you are absolutely right. I moved the wall next to the stairwell to the left. This makes the hallway and the parents' bedroom wider, and Child 1 and the guest room somewhat narrower (see attached image OG-71). It should fit now, right?

Besides that, the main walkway of your stairs is still opposite the sofa. Teenage kids... etc., everything passes by the sofa.

That's true. Do you think it would be better if we introduced a small wall to separate the living room? That would somewhat impair the previously planned open concept, of course. I did that in the image EG-71. However, my wife and I discussed it last night and thought that such a room divider could also be installed later.

I have now reduced the knee wall on the upper floor to 150 cm and equipped the guest room and the two bathrooms on the upper floor with skylights. Now we manage with the clearance area, but of course it is not quite perfect for me. I would have preferred full ceiling height on the upper floor (among other reasons because I am 1.93 m tall and my son, born in 2007, is already 1.87 m tall).
I also had to make the double garage and the garden a bit narrower.

You move walls and fiddle with small details.

I find the entire box fundamentally hideous and inappropriate. Hillside houses can be super cool, but unfortunately, this is not one of them. Overall, I miss a concept. So far, you also haven’t answered why the granny flat is so essential. As I said, it’s not suitable for financing the box. For an AuPair, a guest suite would do (a room with a bathroom, and if it’s upscale, it can also include a small kitchen—later the oldest child could use it) – so why waste the space and always have to accommodate strangers on the property?

€750,000? Keep dreaming... it will never be enough! Not for a hillside house of this size and in Bavaria – even with only one granny flat. As the design stands now, you will easily exceed a million. €750,000 – laughable!!! Do you know how prices for services and materials in construction have developed in recent years, especially in BY?

From my perspective, you’re starting off wrong. I would first get a good grasp of the building lines. How much floor space do you have, what is allowed, what is not. Then WITHOUT a plan, make a list of must-haves, nice-to-haves, and things you definitely don’t want.

And then go to a good architect, one whose style you like.

In the meantime, you can keep tinkering with your drafts – it’s fun.

Get input. Model homes are unfortunately not very helpful for you because there isn’t a model home park for hillside locations, but I always like to point to the "Dream Houses" series on BR – still available in the media library – you can get a lot of inspiration from there.

Buy architecture magazines. Even if the houses featured in them probably exceed your budget, you can always get good ideas.

When the architect’s first draft arrives, you can still move walls and incorporate your suggestions.

But this draft here, sorry, is simply a box pushed into the hillside without a concept. It could be nice, though.