Of course I am aware that a basement costs money?!
Judging by the slight slope of the dead-end street, the 11ant basement rule ("With or without basement: a rule as a decision-making tool") would say that a basement here mainly costs "unnecessary" money, therefore.
No basement substitute. I clearly wrote that we want to build with a basement.
You should also take to heart Yvonne’s suggestion to use potentials for basement substitute space.
Therefore, I deliberately distinguished between "living area, i.e. ground floor and upper floor" plus "basement area"? 130 --> the room sizes added up (is that wrong, or do I not understand the Living Space Ordinance??) - So I just wanted to find out what the external dimensions of a house would have to be to cover the space requirements we would like, a living and usable area...
The Living Space Ordinance is named as such simply to avoid a multi-line name. It does in fact also deal with the crediting and accounting of usable and traffic areas. On the sum of all room areas, you simply add twice "the VAT" as a flat rate: once for proportionate traffic areas (hallways, stairs) and once for the wall-containing areas. So 130 sqm living space sum results in about 180 sqm; the "one-and-a-half-story" thus has a requirement of 120, and the villa alternative 90 sqm house footprint.
Blanket statements like "stone on stone" is too expensive, I would like to understand better but so far have hardly found anything. One builds with a specially developed block called "Duo Therm," another chooses aerated concrete, another sand-lime brick. As a layman, you can never compare that, right?
That’s why the expert will never understand why the layman so eagerly bites into building material science as if the Philosopher’s Stone were hidden there. "Forget the ring, the ring is rubbish, I got it from a gum ball machine!" (Mel Brooks in "Spaceballs"). Follow the keyword "Steinemantra" here or with me and simply build with the wall former that is the bestseller (or rank 2) with your assembler of choice - don’t try to convert him to some test-winning wall build. With "Duo Therm," you have precisely caught the exception to my Steinemantra recommendation: it is reinforced concrete filled into an insulating form block and (wordplay alert) the root of many customer complaints. This provider does not appear for my advisees in the field.
I do know various types of "stone" well – I find the approach like Hauser’s interesting but I am not familiar with lightweight expanded clay factory-built walls. [...] What is new to me are, as said, the Liapor walls from e.g. Hauser. I find the concept interesting, but how can I compare such a wall to a "classic" solid house? Anyone can promise a lot.
You should strictly separate between your actual house construction and your craving for construction knowledge as consistently as between work and booze. On factory tours, watch as a curious bystander how prefabricated house walls are made, but don’t link that to decisions for your real owner-occupied home project. In practical reality, it is totally irrelevant whether, for example, the lightweight expanded clay wall is penetrated by a mortar mesh (because it was site-produced from forty-five point six-liter macromolecules) or not (because it was poured into a tailor-made cake mold in a hall). For the visitor, that may be exciting event cooking; in practice, it is just an equally valid alternative approach and nothing more. Unlike the burger or coffee in a cup, the VAT rate here is the same to go. Even the differences between pumice and lightweight expanded clay lie beyond the decimal point; those between Hauser and Dennert solid house lie even further. At Xella (aerated concrete), you can even order "the same in green," optionally palleted in yellow (Ytong) or orange (Hebel) film on site. Brilliant, that is finally true inclusion: the difference is (simply because it is exactly 0) totally irrelevant whether you are colorblind or not exactly the same, not even like between a Kangoo and a Citan. "Wrong! - like the second one, that is quality! - botched and screwed..." But at least it is entertaining for the expert what possible difference the layman suspects and is firmly prepared to train his palate to discern. April, April! (In the next issue of Bild there will definitely be double sworn Erlkönig photos of the Wolpertinger – if you have smoked enough chemtrails, you can even see them clearly without 3D glasses). No, there are only two concepts here for stone houses: unload large blocks with the seven-and-a-half-ton crane bracket and mortar them layer by layer or unload large blocks with a separate crane from the low loader and mortar only at the house corners. In both you can achieve the desired target thermal transmittance value monolithically, with ETICS or WDIS. In the world of wooden wall constructions, the variety is only slightly less clear. There are also room cells if someone’s individual walls are not 3D enough yet. No mystery at all!
Total 520k€ for desirable 140-150 sqm. Is that now totally out of touch with reality? Which companies operate in this range? Are there at all reasonably reliable and good quality companies in this segment? [+] I will probably get my tooth pulled now? Then I wonder, how many sqm can we afford?
140 to 150 sqm times 3k would be 420 to 450k total. There is still a generous selection of recommendable providers in that range. Just make a routing decision during the dough rest, with or through an independent consultant like e.g. me (I also regularly mention colleagues here) or by yourself. You have a requirement, and whoever can curb their FOMO does not need to want to indulge in "more." A normal family 2 adults 2 kids needs about 110 to 120 sqm excluding home office.