Prefabricated house including land planned - financing

I would advise you to engage a bit more with the topic of building. You yourself are certainly not faster than a planned construction project. And you yourself are probably not cheaper either.

In your case, the tied deal: You sign a fixed-price contract for work with a construction company and become the builder on a property that you buy.

Thank you for the hint. However, I am not quite sure now whether we are talking about the same type of offer. It is actually important for me to understand that, also for the future. As already mentioned, we have almost given up on the property anyway. But again, for clarification... it says in the price included: including property, including incidental building costs, including outdoor facilities... so practically everything that in my opinion belongs to it, and at the end of the list: fixed price guarantee. Now for me it is decisive: does that no longer apply when I have bought the property and then basically have the responsibility?

The definition also floats around somewhere in the forum. Brief and concise:

Developer sells you a finished house including the land.
General contractor builds a house on your land.
General subcontractor plans and builds a house on your land.

Only with the genuine developer is it also a genuine all-inclusive price. In the other two cases, you are the client and therefore bear the risk and cover the incidental costs. So no, that no longer applies, because it is your project and your land. Depending on the case, there may be general contractors who include things like landscaping and, for example, civil engineering work in their price, but that is rather the exception. If a surprise arises (poor soil), that is your "pleasure" anyway. Further incidental construction costs (e.g., costs for electricity/water/sewage) can generally not be fully included, because you – as the client – are the only one who can commission such things (with the local suppliers). So you will also get the bill.

You yourself are certainly not faster than a planned construction project. And you yourself are probably not cheaper either.

...yes, I believe you. For me, it’s just about wanting to understand the procedure, and if the service provider tells me something different than what actually happens in the end, that leaves a bad taste for me. That it makes sense to plan some buffer time and money is OK for me. But that in the end you can’t calculate anything at all, I find that somewhat difficult. You especially agree to such an offer when you yourself have too little experience.

Basically, you should always read a contract very critically. If it does not say "AN trägt die Kosten für Wasser-/Stromanschluss.", then he does not bear the costs, even if he makes it sound that way.

You should always read a contract very critically.

...yes, I would do that too. But my problem is that I would have to transfer money for the planning and buy the property before I even see the contract. Otherwise, there is only the advertisement from the internet. Just out of interest: what kind of costs (approximate scale) should be expected for electricity and water connection?