Prefab house expert - sensible or wasted money?

Developer sells a ready-to-move-in house. Not every [BT] delivers shoddy work. Every trade, no matter in what form, wants to earn money.

Well, there are also prefab house builders who really build finished houses in the factory. For example, in our case, the screed was manufactured in the factory as precast elements including underfloor heating and was placed directly on the raw floor on the construction site. The pipes for the underfloor heating were then connected on site. The pipes for the [Kontrollierte-Wohnraumlüftung] were laid, etc. The flush tank was already installed in the wall. Windows and roller shutters were installed. Plaster was applied and only checked and painted at the corners. In the future, the next step is that the wet area will be completed and installed as a module in the house; how far they are in the single-family home sector, I don’t know, I have only seen the promotional video. And that a hotel was equipped with it. So, for us, the expansion from the installation date to moving in took only 6 weeks. And no, our house is not small, we have about 250m2 including usable area. Nevertheless, it took about 14 months from the day of signing to moving in. However, the floor plan was already finished before signing the contract. The delay was only caused by changes in the building application for which we needed approval from the municipal council. What I still find fascinating is that production in the factory only started 7 days before the installation date.

What you describe is exactly what I see as a disadvantage of solid construction. Either you get a construction manager/carrier or simply someone who supervises the work in our sense,

This difference does not really exist: the high degree of prefabrication experienced by my predecessor is not the rule, but a "prefabricated house" is usually a "prefabricated shell construction," which is completed by a often not insignificant share of regional craftsmen and thus places almost the same demands on a construction manager. Ceterum censeo, the OP or his alter ego writing about him in the third person (?) should not throw in the towel too soon.

and our house project was bombed away and destroyed because of the damn BRW. For months we had prepared ourselves, held talks, forged plans (yes, we were probably naive here, we just wanted to build a beautiful future for us and our children) but it’s not meant to be.

Time for a little therapy, my boy... this constant doom-mongering is not healthy. Split personalities aren’t either

It's a shame that the project died before it even began. The question about the benefit of having a paid expert alongside is still interesting. It can only be answered if one knows the goal of the client. That wasn't made clear. Also a pity.

when I configure, order, and pay for a car today, I expect that on day X I will find the said car exactly as specified. And with a house, it's even more extreme. It's very likely the most expensive purchase of a lifetime, you go into debt until the end of your life and then don't even get the work you contractually arrange. I don't want to accuse anyone, but if it's so necessary to constantly be on the construction site, that means conversely, if you're not there, the workers take advantage of you, are lazy, and don't do their job even though they're paid for it. Sure, I get it... a house is not a car.

The difference between a car and a house is that the car is an industrial mass product (or at least a serial product in the price range of houses) and a house is always a handcrafted custom-made product. Your "converse conclusion" about presence on site is possible, but not a logical one. It's much more about managing your project. Leadership and delegation are unthinkable without presence and noticeable interest. "Management by cemetery gardener" (has 1000 people under him and contact with none of them) is very likely to lead to poor results. This also applies to construction.

this constant pessimism is not healthy.

this is not pessimism, but simply a fact that the price per square meter has practically increased by 73% overnight. For the plot we would like to have, that amounts to 195,000 euros. It’s like sinking a brand new Ferrari into the Isar. After that, I have no more square centimeters or a better location, but just the aforementioned Ferrari less. We have the faint hope that in a meeting the installment values might possibly be increased. (meaning the property would become cheaper) Currently, these prices simply make no sense given the income limits and no one could afford this.