Construction costs are currently skyrocketing

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.

At the same time, I will make sure that they have to deal as little as possible with care, estate execution, and burial.

That's exactly how it ends up with us. Despite having one child, when it comes down to it, we have to "self-care," meaning nursing home, care home, whatever. That means I have to have income to be able to pay these costs. If we're unlucky, then for 2 people, either at the same time or one after the other, which would be more expensive. And that worries me, and for this reason, we do not regularly have the most expensive champagne or any kind of bling that I don't need (example). I am 72. Everything with my daughter is arranged through a notary in that respect; at least she hasn't depended on a dollar from us so far. Her boys, the only children on both sides of the family, are expected to inherit more than enough from several sides.

Excerpt:

"After the term of usually xy years has expired, those entitled to the heritable building right generally have a preferential right to contract renewal with cyz. If the property owners 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 heritable building right holders receive the full market value. Thus, cyz goes beyond the legally required minimum. Since the year blabla, it has been possible to extend heritable building right contracts with a remaining term of five to 40 years according to personal wishes even prematurely."

Only that you do not then automatically get the extension at the previous leasehold rent. It then adjusts to the respective market interest rates.

I have already explained that.. it is still under 200€, the adjustment was 5€ ... etc. It is already stated in the forum.

A "further major disadvantage" looks a bit different to me when it comes to numbers...
For example, that you only deal with it negatively and then possibly won't build at all because the financing won't go through with 150,000€ more for the land purchase. Just because alternatives are excluded.

If the plot costs 150,000, you won't get it with a ground lease of 200 euros at today's interest rates either.
And if you then pay 300 or 400 or 500, the bank will calculate it the same way.