How many square meters are possible for KFW40 turnkey with a budget of 150,000€?

Additional construction costs were not 20k for us, it is apparently very individual depending on local conditions and suppliers. I would always try to agree on earthworks and foundation as a lump sum in the contract with the general contractor if possible.

Construction site toilet :)

Did you really have to arrange that yourself? The construction site setup was included for us. The financial added value of self-performance is generally significantly overestimated.... what do you save, only the labor hours, and as I learned today, the construction has a minimum wage for unskilled workers of ~12 euros... you can’t apply more than that, now everyone can calculate for themselves how much they actually save. If the material is then more expensive because you cannot purchase in large quantities, the whole thing becomes a zero-sum game. On the topic: there is a provider who has the words House Massive and Team in the name, there is something for 114,000 €, how realistic that is is beyond my knowledge.

Did you really have to take care of that yourself? The construction site setup was included for us

No. In the higher-priced ones, that was mostly included. There were also a few cheaper prefab house companies that had it excluded.

You have to pay for it either way.

The financial added value of personal labor is generally vastly overestimated....what do you actually save, just the working hours, and as I learned today, the construction industry has a minimum wage for unskilled workers of about 12 euros...you can't apply more than that, now everyone can calculate for themselves how much they actually save.

I see it a bit differently. Yes, the working hours are one thing (where you should usually calculate personal labor at least double the time).

Especially with certain trades (sanitary, electrician), the material price is often marked up heavily. With others, less so (paths, landscaping, drywall).

You can still save quite a bit there.

I see the issue with the personal contribution quite differently as well. You can’t seriously calculate at 12 euros per hour. Maybe the assistant from their boss gets 12 euros, but you pay 40-50 euros net + tax.

We saved over 100,000 € through [EL]. The effort, however, was about 1000 hours from family/friends and about 2500 hours from my partner and me.

Thanks, I misread it... it's somehow too confusing here [emoji848]

That’s how it is, the craftsman gets 12 euros, but the real hourly wage at a normal construction company is then around 35 euros per hour, which the construction company has to calculate with.