Maybe we have to come to terms with the idea. Even though that means more costs again (approximately how much?).
Roughly estimated just under 10% if you let the architect do the complete job, from planning to construction management etc...
But don’t worry, it probably won’t get more expensive anyway... the BTs/GUs etc also charge money for planning etc but it’s more or less hidden in the "total price"
If you build in a region that is rather “cheaper,” which you can guess from the building plot, then the price level with local craftsmen is possibly also lower and a regional architect can build cheaper than a national turnkey provider...
And you won’t have more stress either... if you let the architect do everything, then you only have to approve the offers once a week and decide on the equipment...
I wouldn’t see a big difference except that the architect asks at some points how you want things and the turnkey provider just decides or runs through his program...
Of course, you don’t have a "guaranteed fixed price" but if the architect knows the local craftsmen/conditions and builds there often, then he can estimate it quite well.
I’d rather have the architect tell me without guarantee that it will be about 280k than a "guaranteed" fixed price of 320k ;)
Building into the ground is the most expensive option you can choose. That’s why I asked about the building window at the beginning.
I would quietly disagree there..
It depends crucially on the ground conditions... so get a soil report done!
We were able to build our basement on a natural gravel layer and also excavated some 100m³ of gravel for backfilling, which saved us quite a bit of money... with a slab foundation we would have had to buy a lot of gravel here because at that depth there was only clay soil...
With a proper light well on one side, quite pleasant living spaces can also be created here...
I would plan the home offices in the basement, together with a technical room and a storage room. On the ground floor then living room/dining room/guest WC/kitchen/guest room, in the upper floor then bedroom + 2 children’s rooms + bathroom
If the whole thing is only allowed to be 1 full story, then in my opinion it doesn’t make much sense to want to convert the attic into living space, the house would have to be quite large to still get a decent area under the roof. In that case, it might be better to make the children’s rooms "two-story"... for example, the bed on a mezzanine, which allows you to get more space in these rooms with the same floor area.
I don’t see any big problem there for now....