I would really still be interested in what is wrong with the draft
Everything. As you can clearly see from the huge gap between
Our dream house: - Bungalow 180 m² (according to the living space ordinance) - Angular shape
and what has been drawn so far.
and what doesn’t work (except that it appears messed up, which can also be an important gut argument).
The only gut argument (pro) is that the draft pleasantly reminds me of my construction planning tinkering as a teenager. The counterarguments, however, are all head arguments – except that the spatial feeling throughout the house will be similarly twice-bent as the staircase. "Back to square one" is a wise conclusion.
I had also already considered an angular bungalow, with a guest wing for vacationers and a wing for long-term tenants.
Bungalows exist, even masonry ones, starting at about 90 sqm; in angular form starting at about 120 sqm.
Partial basements I usually do not recommend from a cost-efficiency perspective. Angular floor plans form an exception: it can be cheaper there if the basement is built as a rectangle (i.e., omitting the part protruding beyond one of the L-legs above).
- my partner does not want foamed plastic on the outside of the walls and actually no prefab house either
I already wrote in your other thread that this is solvable monolithically with aerated concrete in 36.5 cm; also with pumice (e.g. KLB, Bisotherm).
contra: - is very likely not allowed to be built on this plot
I can’t imagine that, if at the same time a "captain’s house"
pro: - may be built, the neighbors have it
as a rather Frisian building style is permitted in BW with §34 :)
Regarding a garage (which you want to use only in ten years), I would not worry about that in today’s budget. A utility room can still be integrated as well, and a broom closet too.
If you look back at your beginnings here: basically, you started the house building topic by looking for a wall structure where concrete on both sides acts like a Castor container for an insulation material unpleasant to one of your partners.
That so far "only" a holiday home with a Z-bent staircase has come out of it could have turned out worse. In the meantime, it has been explained to you that walls are also possible with simple, commercially available - and in the case of aerated concrete even to be processed by the cousin’s own work? - building materials. You can find lots of sample designs as a basis for suitable houses – also solid house providers who translate a WDVS design back into "monolithic". Many "building proposals" from WDVS solid builders actually go back to house types of an aerated concrete manufacturer.
You will also get closer to financing with any "more normal" draft: the envisaged super-special holiday witch house would definitely not have opened a banker’s heart – simply because of unusability.