Prefab house expert - sensible or wasted money?

Exactly those naive ideas I meant: nothing goes faster with the "prefabricated house," only the assembly of the shell on the construction site appears that way because you do not see all the beforehand done helper work in the hall. But a lot can go wrong even there – which you don’t see when the house arrives on the low-loader. The construction supervisor would have to be present in the hall and check and document everything. What is unloaded there is often completed on site by the same subcontractors who would also be active in local house construction.

Wow, I thought the same! What a statement from someone who has worked in an architect’s office, manoman. If you even get to see the site manager of a large prefabricated house manufacturer four times on your construction site, you already count as one of the lucky ones!

Apart from that, although I might be wrong, I believe that at the end of the day a prefabricated house without many special requests is cheaper for us than a completely individually planned solid house

You are mistaken in the general assumption. It varies individually; lately I have rather had the experience that the local solid builder is usually cheaper...

Does such a construction manager / construction supervisor or whatever already go onto the factory premises during the manufacturing phase

Construction supervisors are a specialty of solid general contractor clients.

that in the end of the day a prefabricated house without many special wishes is cheaper for us

Point two out of five in the dirt bingo.

The companies of the individual trades roughly reclaimed 20-40% of their money through additional charges.

Only the item "work hours" which is extremely popular especially in big projects hardly occurs here. That and the additional charges also belong to the "culture" in the latter case.

Apart from that, but I could be wrong, I believe that at the end of the day a prefabricated house without many special requests is cheaper for us than a completely individually planned solid house with many reworks, repairs, etc.

You're comparing apples and oranges there. On the one hand, you write "prefabricated house WITHOUT many special requests," and then you talk about a "completely individually planned solid house..." A "standard" prefabricated house must be compared with a "standard" solid house.

Is the whole forum here against prefab houses or have I just come across the specialists?

Wow, I thought the same! What a statement from someone who worked in an architecture office, manoman.

1. I have said multiple times that our office only handled large projects and had nothing to do with single-family houses or the like. Reading helps already, and
2. I am not an architect and yes, not an expert in detail but

3. when someone insists so vehemently and exclusively negative on a subject, even as a layman, my alarm bells go off. Nothing is only negative or only positive. Especially since this thread is not even about prefab house vs. solid house.

Point two out of five in the dirt-bingo.

With statements like that, I wonder how old the writer is? I suspect you are from the construction industry, right? I know why I left there.

A prefabricated house "off the shelf" must, however, be compared with a solid house "off the shelf"

Ok, then quite specifically, can you name a few providers in the (North) Munich surrounding area who offer something like that? Also companies that exhibit in Poing are welcome. We will be there again next Sunday for some talks.