Bungalow planned on existing basement: ideas?

I can’t find any "off topic" at the core of the issue. Vacancy actually accelerates any decay – and here the shell has practically even experienced a "first use" through vacancy, which hardly let it "get used to being dry." A self-regenerating stone crosses the line from wishful thinking to nonsense. What could have impregnated it so? Ten years without adequate weather protection – meaning not only precipitation events but also climate fluctuations throughout the day and year – affect every building. Even a layperson can't seriously believe that this unplanned long-term weathering test would be endured without a flinch. Furthermore: if this really is such a prime location, in ten years you’ll hardly be the first to smell a bargain in the property. Don’t you wonder why your predecessors ultimately weren’t the fools? At least demolition contractors, building dryers, experts, and other specialists would have been predestined property developers here. Without any boils, this Sleeping Beauty would have long been off the market.

Hello 11ant, Off-topic only because I wanted to discuss the floor plan here But gladly, I am grateful for any input, after all, it’s about a lot of money. I am in the process of finding an expert who can say something about it – but they all seem to be overloaded. On a global level, I understand your approach. And at first I thought the same. But there are very specific reasons why it has been vacant for many years. The owners are coming from an unimaginably high amount far above 200,000. The thing is actually burned on the market. I try to approach the matter logically and rationally: What can break? I mean the question seriously and would like to have more substance to it mentally. The stones also dry out even with prolonged moisture and regain their insulating properties, at least that’s what the product sheet says. With mineral wool insulated stones, the issue would be settled, they lose their properties. Then I’d be out. Of course, it could end up like Dieselgate. Certainly not optimal, but on this basis not bad in my eyes for now with these stones. Can the adhesive break down and thereby make the entire masonry unstable? Can the floor slab be rotten from the inside because the reinforcement has rusted? Cracks etc. are not visible from the inside, for example. Many greetings

And where is a utility room (washing machine, dryer, etc.) and storage room/pantry located? Or is the space in the kitchen sufficient for this? For an age-appropriate design, one does not want to have to always go down to the basement for these things.

Of course, water that has penetrated does not wait for its next evaporation opportunity; and of course, construction adhesive is not immune to a change in its chemical structure as a result of this process. Material fatigue does not have to manifest on the surface and neither as crack and fracture lines visible even without a microscope. Traumas have been inscribed into the "pain memory" of the materials through this weathering "cure" that have not yet visibly manifested on the surface. But it is more likely for a camel to pass through the eye of a needle than for a gambler to lose his belief in a winning streak. Nevertheless, I am of course also a human: fallible, subjective, and in my case of the blood type "when in doubt, better to be cautious one time too many." So you do not necessarily have to be punished if you ignore my skepticism and my advice to keep your distance.

Could the floor slab be rotted from the inside because the reinforcement is rusted?

No, I do not expect a rotten floor slab; the reinforcement will still be stable. I rather doubt the praise the product brochure sings about the stones.

Hello everyone,

The plan has developed (I believe massively for the better):
Do you have any ideas/improvement options?
There will still be a (glass) door between the dressing room and spa on the ground floor.

Thanks to you! Regards

Hello Seven1984, two points immediately stand out to me regarding the floor plan:

1. Are the main apartment and the separate unit not physically separated? Is the separate unit intended to be rented out to others? I would also feel uncomfortable even if it's to relatives, if they could suddenly come up the stairs. And is the laundry supposed to be done downstairs in the storage room? Does it just look that way or does the path to the utility room lead through a bathroom?

2. With such an open floor plan, it could be very noisy for the child. Especially if all guests have to pass the child's room door to get to the bathroom. Or when the child is getting ready in the evening and doesn't have any peace. I would have found that terrible as a child!

Cool! I like it! Although the bathroom is not my style at all. I would rather have just 6 sqm without a window, I miss the feeling of security here.
The granny flat has access from outside and then the inner door, which will be locked forever at first?
I can't make sense of the basement rooms around the stairs, but it must be right.

Sowas hätte ich als Kind furchtbar gefunden!

As a child, I had the room opposite the living room in our 63 sqm 3-room apartment and slept well. The murmur of voices and muffled music are immensely calming.