Prefabricated house construction in Berlin, experiences?

Hello we currently have relatively similar requirements here in Berlin and the surrounding area. If interested, we can gladly connect.

Do the numbers make sense like this? We would actually like to get below 700k. We are just starting the search, so we still lack the proper overview whether this is feasible or utopian.

Yes, the calculation is basically sensible and sufficiently conservative. Besides the personal contribution, there are several possibilities to reduce costs:
1. A smart floor plan without frills that optimizes the square meter at the desired functionality (although a square floor plan usually has the best price per square meter, square meters are not performance. So, in terms of price-performance ratio, the price per square meter, which is great for rough cost estimation, is no longer the decisive benchmark.)
2. A pragmatic choice of materials – good doesn’t always have to be expensive.
3. Clear priorities and rather realize well what is really important instead of chasing optical fashion wishes like, for example, a walk-in closet that then turns out impractically narrow or a pantry that is painfully squeezed into the ground floor...
4. Not wanting everything to be perfect right from the start. Does the garage have to stand there immediately? Does the outdoor area have to be perfectly styled at move-in? Is a representative fence around the property necessary?
5. See what’s happening on the market and engage with providers using new technology. As a reference customer, you can get a good deal and can quite confidently rely on everything being arranged to ensure a successful market entry. Some technologies are subsidized. I would take a look in the direction of the trend of "serial building," but I don’t know the details. However, this is not for people with an exaggerated need for security or pessimists.

Hello @Bauen Berlin we currently have relatively similar requirements here in Berlin and the surrounding area. If interested, we can gladly connect sometime.

Good luck with the networking!
You can start by naming the district here. Maybe you will even team up?

1. A smart floor plan without frills that optimizes the square meter for the desired functionality (although with a square floor plan you somewhat have the best price per square meter, square meters are not performance. So in terms of price-performance ratio, the price per square meter, which is great for roughly estimating costs, is no longer the decisive benchmark.)

Whereas "smart" and "square" floor plans don’t quite go together, and "smart" importantly includes not wanting to omit hallways (as the traffic areas actually increase because of this) – just so that the term "optimized" is not misread. Ideally, one aims for a rectangular floor plan with a gable roof. And as a "normal family" (2 adults, 2 children) looks for catalog floor plans.

Good luck with networking!
You could start by naming the district here. Maybe you could even team up?

Although "smarter" and "more square" floor plans don’t quite go together, and "smart" importantly includes not wanting to omit hallways (since traffic areas actually increase because of that) – just saying before the term "optimized" is misread. Ideally, aim for a rectangular floor plan with a gable roof. And as a "normal family" (2 adults, 2 children), look for catalog floor plans.

We don’t want to commit to a specific district in order not to make the search even harder than it already is. Berlin and the surrounding area with good transport connections. Ideally South/Southwest Berlin or the surrounding area.

We do not want to commit too firmly to a district in order not to make the search even harder than it already is.

Then at least you do not have any explicitly different target district than the OP.

Berlin and the surrounding area with good transport connections. Ideally South/Southwest Berlin or the surrounding area.

Berlin and the commuter belt with good transport connections. Ideally South/Southwest Berlin or commuter belt.

The dream goes directly to the most expensive area, where standard houses with land quickly become seven-figure.
And much has already been built up from the time of the Wall, and new plots are hardly designated.
Your competitors are very high-income new Berliners.