Single-family house optimization and planning (180 sqm + attic without basement)

You are not quite clear that both prefab and wooden houses are usually more expensive than solid houses made of stone, right?

However, it is often the case that the same house, with the same quality and the same features, usually costs the same. No one can give anything away.

If the costs of solid construction are lower than those of a wooden construction, the calculation above should actually be feasible - basic model in 180m2 (or less) solid with 100k for targeted adjustments of the equipment upwards.

I wouldn't say that so generally. We have a carpenter who builds 1-2 houses a year, and the expression "good and cheap" fits there. A solid house builder can take a long time. Builds only according to the energy saving ordinance (there are hardly any large timber frame general contractors who still build that). Don't you have a relative who can take over the shell construction or am I confusing you right now?

If solid construction costs are lower than those of timber construction, the calculation from above should actually be feasible – basic model in 180m2 (or less) solid with 100k for targeted adjustments of the equipment upwards.

In principle, I would say yes, the secret often lies in absolutely optimized floor plans without big frills. One must not forget that these 100k include not only equipment but also things like a base slab. And: I have absolutely no knowledge of the standard of Danwood, so depending on what you want to spruce up, you can quickly be at 70k there. Especially with two bathrooms. A comparison is difficult without knowing the building description. The claim that wooden or prefabricated houses are quasi "inferior" to their stone relatives is simply not true – so if you are after "caviar," the argumentation is plainly wrong. For the OP, it is good that his prioritized variant is generally the cheaper one. Yes haydee, exceptions prove the rule.

Can someone help me understand how the construction costs compare between 1.5 and 2 stories (we want to build the house exclusively on the development plan where this is allowed)? The square meters basically remain the same.

Hmm, since you mentioned & inquired about Viebrockhaus – let’s look at the Maxime 610 as a "1.5-story gable roof" with a 155cm knee wall, and compare it to the Maxime 220 II as a two-story at list price.

A brief excursus - also interesting for me. Since we have a mason / shell builder in the close family, only stone on stone was an option for us.

Danwood Point 181.1 could also be considered. The base price is 236K. For that, you get this:

nope, the base slab, transport and architect costs are missing, and suddenly we're 50,000 higher.