Build a new half-timbered house solidly inside?

Because both house types are basically equivalent. With solid construction, you could also distinguish between modular construction, Poroton, sand-lime brick + clinker, etc. A homeowner – except you – doesn’t care whether their house still stands in 300 years or only 250 years. Not even in 100 years. They live in the here and now and want to spend their life or a phase of their life in the house. And that usually lasts 10-40 years, which every house can easily withstand without collapsing.

What do you actually want?

I don’t think so. What if you want or have to sell the house someday? And there are enough on the market. Then quality still matters, doesn’t it?

There is good and bad quality in both wooden and solid houses. Comparing them is like comparing apples and oranges.

And there is enough on the market. Then quality still decides, doesn't it?

Yes, but the quality can be identical in solid constructions and timber frame constructions. However, there can be and are massive differences between different solid constructions or timber frame constructions among themselves.

And yes, quality decides. But you cannot generalize which construction method is of higher quality. You can build a 100 sqm solid house for 150,000€ or as a timber frame construction for 400,000€. Or vice versa. YOU set the quality with your requirements, the construction method does not determine the quality.

The material of the walls is just one feature of a house. Much more decisive, however, is the location. Then also the equipment. And the floor plan. Or the outdoor facilities. Perhaps also the size of the plot.

Once again: What is your motivation for your questions? What do you really want?

I don't believe that. What if you want or have to sell the house someday. And there are plenty on the market. Then quality still matters, doesn't it?

If the houses are well built, both wooden and stone buildings easily last enough years that you can also not care about reselling, that your stone house might still stand in 1000 years, but your wooden house certainly wouldn't have the same beams as when built in that time... you can care about that just as little as the buyers who would buy during your lifetime. Pay attention to sufficiently good quality then it doesn't matter what it's made of for the time being.

Of course. Nowadays, you can no longer be sure that you can or want to live in it forever.

You mean nowadays you can't be sure whether you will live to be 400 or 600 years old? oO

What do you actually want?

The chocolate-egg-laying-wool-milk-sow in fairy-dust pink maybe (?) - getting help is certainly not yet quite firmly decided:

and then there are also concerns about just posting it publicly like that

The deal is: a largely completed questionnaire gives a great chance for many ideas. There are some creative DIYers around here, but they are often also very bad crystal ball readers.

Of course. Nowadays you can't be sure anymore to be able or willing to live in it forever.

You’re crazy. With buyers of thirty-year-old houses one often hears that they no longer like the then-modern floor tiles, but never: "you still have to lower the price a bit, the house will only last another hundred and twenty years".

I don’t believe that. What if you want to or have to sell the house sometime. And there are enough on the market. Then quality still decides, doesn’t it?

There are discussions here about that too, e.g. that one should move away from the kitchen standing in the living room again, because its being in vogue could be over in ten years. Or a controlled residential ventilation system: I and a small faction say the hype will soon backfire; a larger faction says without controlled residential ventilation the market will soon be like today without underfloor heating; and the majority says those two other factions both see it too dramatically. Same with ETICS – but on the other hand you can already see an all-clear: there were also discussions "potentially unsellable, nobody wants woodpecker and algae houses", and meanwhile some of these houses are already second-hand, without having to be sold at bargain prices. Only one thing is certain: whoever waits for absolute guarantees will never build.

But why do both cost the same?

That’s called market economy, that prices are not only explained by the costs of material and processing: if two products address the same target group (i.e. people with the same purchasing power), then providers want to pull the same amount of money from their pockets. This mechanism works decisively price-aligning, then with objectively equivalent products quasi "only" the badmouthing of one product can lead to people preferring to spend their money on the other product. Economic processes will not be understood as long as people operate under the false assumption that market participants act primarily rationally.