Single-family house south slope - floor plan planning, tips?

Hello to the forum,

things are getting serious for us: we are moving into the concrete planning of our construction project. And I would be happy and grateful for your feedback on our amateur floor plan design. We are building in the Ore Mountains in Germany’s highest city Oberwiesenthal. Here, East German prices still apply (I have compared and there is a significant price difference). So, here we go...

Development plan/restrictions

[*
Plot size: 1,200 sqm
[*]Slope: facing south
[*]Floor area ratio: n.a.
[*]Floor space index: n.a.
[*]Building window, building line and boundary:
[LIST]
[*]3 m to the property boundary
[*]the adjoining property to the south & west belongs to my parents


[*]Edge development: n.a.
[*]Number of parking spaces: 2 (carport on the east side of the house)
[*]Number of floors: basement, ground floor, upper floor, attic
[*]Roof type: gable roof 35-38°
[*]Style: Bavarian country house
[*]Orientation: east-west, i.e. roof surfaces north-south
[*]Maximum heights/limits: must adapt to the surrounding development
[*]Further requirements: n.a.

Requirements of the builders

[*
Style, roof shape, building type:
[LIST]
[*]Country/wood house (basement + ground floor plastered white on the outside; upper floor + roof structure wooden plank with Tyrolean castle look)
[*]Gable roof


[*]Basement, floors


[*]Basement partly used commercially (my wife’s naturopathy practice and my office with access from outside/south)
[*]Ground floor + upper floor as living area
[*]Attic: half storage, other half sleeping/chill area for our children with friends or visitors


[*]Number of people, age


[*]Kati (40) & Philipp (39)
[*]Helene (10), Benedikt (8) and Valerie (6)


[*]Space requirement on ground floor, upper floor


[*]see floor plans (approx. 150 sqm)


[*]Office: used commercially
[*]Overnight guests per year: 20-30 nights
[*]Open or closed architecture: closed (mountains, cold winters, constant wind)
[*]Conservative or modern construction: conservative
[*]Open kitchen: yes; cooking island: no
[*]Number of dining spaces


[*]standard: 5
[*]expandable to 10


[*]Fireplace: masonry heater with viewing window (water-bearing)
[*]Music/stereo wall: no
[*]Balcony: ground floor facing south; roof terrace: no
[*]Garage: no; carport: for 2 vehicles
[*]Utility garden: no, greenhouse: yes
[*]Further wishes/special features/daily routine


[*]We still have real winters in Oberwiesenthal
[*]The children usually go skiing daily
[*]So they come home with wet clothes in ski boots with ski equipment
[*]Therefore, a second entrance in the basement on the west side is planned including a simple wardrobe and storage room for skis or mountain bikes in summer or work clothes after gardening
[*]Important: Currently there is an enormous amount of snow in Oberwiesenthal (approx. 150 cm)
[LIST]
[*]In winter, paths/driveways have to be cleared
[*]Snow has to be cleverly "deposited" (i.e. "snow storage" is to be ploughed so that after 2 months of winter the snowblower still throws the snow over the snow wall)
[*]Regarding roof (slopes) and sliding snow noteworthy


[*]In the basement there is a prep kitchen for the Prijut12, which I will operate from 05/2020 (rustic wooden cabin with a reasonably sized food offer and a great place to go out for drinks)


[*]In the prep kitchen we want to a) pre-produce and freeze meals before the main season in winter or b) prepare meals in large quantities fresh and sell them directly opposite in the Prijut12 (approx. 80 m away)
[*]The Prijut12 kitchen is simply very small

[/LIST

House design

[*
Who designed the plan:
[LIST]
[*]Do-it-yourself


[*]What do you especially like? Why?


[*]Large windows/sliding door facing south & west
[LIST]
[*]The sun shines in (solar energy enters the house)
[*]The view to the southwest is simply breathtaking (ski slope, night skiing, Klínovec as the highest peak of the Ore Mountains)
[*]The view is unobstructed and without trees


[*]Open living-kitchen area


[*]Interaction with children & friends when, for example, cooking


[*]Musche-Pu-Pu corner including TV


[*]My father implemented this in his holiday home
[*]It is super cozy
[*]Large lounging area
[*]Curtains cover the TV (so it disappears from everyday perception)


[*]Second small bathroom on the upper floor


[*]When the two girls reach puberty, they have their own hygiene area

[*

Price estimate according to architect/planner: 480,000 €
[*]Personal price limit for the house, including equipment: 500,000 €
[*]Preferred heating technology: here I am quite uncertain and undecided...


[*]Option 1:
[LIST]
[*]Solar thermal for hot water preparation
[*]Gas condensing boiler
[*]Water-bearing masonry heater (I have 2 hectares of land for wood and definitely want a fireplace in the house)


[*]Option 2:


[*]Water-bearing masonry heater
[*]Ground source heat pump
[LIST]
[*]Supplied by a photovoltaic system

[/LIST

[*]If you have to give up something, which details/extensions


[*]Reduce guest/workroom on the ground floor
[*]Guest bathroom on the ground floor excluding shower (i.e. pure guest toilet)


[*]What you cannot do without:


[*]Living rooms
[*]2 bathrooms
[*]Prep kitchen
[*]Practice room
[*]Office


[*]Why the design turned out the way it is now?


[*]Because we want lots of light in the living area
[*]Because we want to enjoy such a great view in a fantastic location
[*]Because I personally want to use as much solar energy as possible
[*]Because in summer we want to open the large sliding door to step directly into the garden where the greenhouse will be and where I go to my bees (I want to start beekeeping)
[*]Because we have no idea about the technical requirements, though


[*]Standard design from the planner: does not exist yet
[*]What is the most important/basic question about the floor plan summarized in 130 characters


[*]Does the floor plan make sense in this form regarding building technology/piping layout etc., and does the forum recognize weaknesses for daily use?

Attached are the floor plans and a sample house from Bavaria, which serves us as a template for the appearance of the exterior cladding.

Site plan with elevation would be good Nord arrow on the floor plans.

Keep paths clear because of winter You have 3 entrances and all on different sides of the house. That would be a no-go for me. I love winter, but not shoveling snow.

Hallways you have an insane amount of hallway. Among other things because of 3 house entrances, because of 2 staircases

What kind of corner is that in the dining area? Do you really want no normal living room? The children won’t always be small. That corner would be something for the attic

The bedroom definitely needs a wardrobe or direct access to the closet area

What immediately strikes me:

I would definitely create a passage between the practice and the living areas inside the house, otherwise your wife always has to walk around outside. Especially in snowy winters, that would annoy me a lot.

I find the position of the staircase unfavorable, squeezed into the corner like that, it is one reason for the large hallway space. You are wasting a huge amount of space there. That does not fit with such a large house.

I don’t understand the thing with the missing living room and the shell-Pu-Pu corner.....

The Grundofen in the middle of the room is a huge obstacle between the kitchen and the dining table. Besides that, the chimney has to run through all floors. In the basement, it currently ends up right in the middle of the hallway, or am I wrong?

The bedroom without a wardrobe or access to the dressing room is not practical for everyday life.

Where do you actually do the laundry? And where is the storage room for the vacuum cleaner, mop, Christmas decorations, etc.? (ok, I see a long wall with a storage room in the basement hallway)

The dirty entrance in the basement is certainly a good idea, but then there must also be space nearby to store skis or bicycles. Or do they go into the garage?

I don’t have an immediate great suggestion now, but I think you should fundamentally rethink this.
Everything feels very unstructured, the rooms are lined up one after another, large hallways in between, what a waste of space.
It is a nice project, an architect can make something great out of it.

You are giving away +/- 25% of the living area for hallways, especially in the basement and upstairs, which is unfavorable (putting it politely).

Where should the TV go?

Why no door from the practice to the interior of the house?

Why two small bathrooms next to each other? Better to have a separate WC and a larger bathroom with a large double sink and, for example, 2 shower places in one large shower.

The practice WC should not open to the treatment room.

Which regulations must be observed for the practice to obtain approval? Minimum room height, escape routes, increased sound insulation, fire extinguishing system, ventilation, minimum window area per floor area, number of required parking spaces, accessibility, etc. etc.? Has all this been clarified? Also legally: (e.g., does the building zone even permit a use beyond private residential space?)

The staircase does not work.

I don't understand the plan. Are the floors really on top of each other? Where does the basement stairs come out on the ground floor? And where is the landing stairs to the upper floor?