Construction costs are currently skyrocketing

Creaton as a large roof tile manufacturer, for example, makes 12.5%...

Creaton too? ufff... Thank God, we had the roof covered in November.... Creaton Domino (clay roof tiles).

We will see then how much is built next year. I believe the big slump is coming then. Of the 400,000 apartments that the traffic light coalition had as a target, we will then be very far away. Maybe, due to existing orders, we are still at 300,000 apartments in 2022, but 2023 will bring the big bang. Then you might end up with 200,000 completed apartments or even less. Because who wants to build under these conditions (high interest rates, high inflation, high construction costs) anymore. The consequence will be insolvencies in the construction sector and at least a stabilization of the high price level (it's called supply and demand). And existing properties that are not yet a hundred years old will increase in price. Because new construction will still only be for the top 10%, and the others will be flocking to the young, well-maintained used properties with forty years on their backs.

I am already suffering with you, even though it is only imminent for us shortly. The screed was just freshly laid and will be heated in January with a mobile heater. We have also drilled.

At my place, heating with Hotboy has been ongoing since Monday. I can give you an update tomorrow on what has happened so far. The drilling has been there since May, but it is not allowed to be used for that because of the risk of freezing. As far as I know, the heat pump is not there yet either ;)

And you get the corresponding value if you don't want more.

You don't get that at all. The legal minimum is two thirds; there is zero incentive for the lessor to go beyond that. A fair approach would be to set at least 90%.
Some of the existing contracts will also expire in the coming years, and then again in the 40s and 50s. It will be interesting

200€ is your lease as of today. When was the last inflation adjustment? If it hasn't happened yet, it can hit you at any time – another big disadvantage of ground lease. So you can assume that by retirement you won't be paying 200€, but 200€ plus all the inflation from 2013 until then.

I've already explained that.. it's still under 200€, the adjustment was 5€ … etc. It's already in the forum.

A "further big disadvantage" looks a bit different to me with numbers…
For example, that you only deal with it negatively and then maybe won't build at all because financing doesn't work with 150,000€ more for the land purchase. Just because you rule out alternatives.

You simply don't get it.

Excerpt: "After the term of usually xy years expires, leasehold beneficiaries at cyz generally have a preferential right to contract renewal. If the homeowners let the contract expire, they receive compensation from cyz amounting to at least two-thirds of the market value. If the house is resold, the former leaseholders receive the full market value. Thus, cyz goes beyond the legally required minimum. Since the year blabla, it has been possible to extend leasehold contracts with a remaining term of five to 40 years prematurely depending on personal wishes." … "From these interests arises the un-terminability of the contract. Leasehold rights can be pledged, sold, gifted, or inherited. Termination, however, is excluded. E. are thus contractually more protected in their rights than tenants or leaseholders, for example." Yes, we really made a mistake and contractually considered this lousy property as ours. We have no right to live here. I also don't understand why the bank and the notary even went along with this. All lies and fraud!

If you have to react so emotionally and personally to a factual discussion with differing opinions, it seems you truly regret the leasehold.