Heritable lease with equity capital - claim by the heritable lessee

I thought we were in the minority.

Actually totally uncommon. I would initially just ignore it and finance it the way you want in the end. In the contract for services, it is probably an impermissible restraint.

However, this is marginal in the normal single-family house sector, since the restrictions due to the leasehold agreement are also minor (as the experts say so nicely: "mercantile depreciation").

I don't know if I understood you correctly, but single-family houses on leasehold are usually significantly cheaper than those on purchasable land. Usually, the house itself is "irrelevant" and you more or less buy the land. If you can no longer buy that, then basically only a pile of stones remains. (and of course the plus point of having a house/land to use at all)

Well, what means is that it basically deters potential buyers that they acquire a property but never the "full" ownership of the land. So you never reach the point where everything is fully paid off. For the land, you pay until the contract expires, usually 99 years.

I don't know if I understood you correctly, but detached houses on leasehold are usually significantly cheaper than those on purchasable land. Usually, the house "doesn't matter" and you more or less buy the land. If you can't buy that anymore, then it's basically just a pile of stones. (and of course the plus point of having a house/land to use at all)