Is financing feasible? New condominium construction 930,000 with equity 170,000

When evaluating, it should also be taken into account that you have then paid off 3/4 of a condominium that is (hopefully still?) worth 1 million. The money you have paid off over the past 20 years should not be considered "lost" in the evaluation. So if you still owe 280k but also own 600k in real estate value, the risk for the bank should be manageable. ...

Would that possibly mean agreeing on an (unrealistically) low repayment/burden at retirement and simply leaving/inheriting the property to the bank in the event of death?

I have a clause in my loan agreement that I will sell my property if I can no longer pay the annuity upon retirement. How enforceable that would be is probably another matter, but if it really comes to that, I would certainly be a hardship case. Then the repayment would probably be stopped, the interest would be covered by the social welfare office, and after my death, yes, the property would probably fall to the then financing bank.

I have a clause in my loan agreement that I will sell my property if I can no longer pay the annuity upon retirement. How enforceable that would be is probably another matter; if it really came to that, I would certainly be a hardship case. Then they would probably stop the repayment, the interest would be covered by the social welfare office, and after my death, yes, the property would probably go to the then-financing bank.

Such a thing exists?? Good to know. Might also be an option for us.

Have you ever thought that after 20 years fixed interest period, the follow-up loan is reevaluated and if at 68 years old there are still 280k€ left on the clock, there may be no loan or only one with a nasty risk surcharge.

Exactly why you should check the numbers and possibly only finance for 10 years now. Or 15? Is 15 even possible?

Would that possibly mean being able to agree on an (unrealistically) low repayment/burden at retirement and simply leaving/inheriting the property to the bank in case of death?

There is an heir, after all. (Or the OP is not alone in the world with the loan...) They would possibly also inherit debts on the house... uh... apartment.

I have a clause in my loan agreement that I will sell my property if I am no longer able to pay the annuity upon retirement.
...

And that is legal? :oops:
It probably is, otherwise you certainly wouldn't have signed(?)
If you can no longer service the annuity, then—after maybe some begging letters from the bank—everything goes to the bank anyway? (like in a casino).

...
There is an heir, after all. (Or rather, the OP is not alone in the world with the loan..,) That person would possibly also inherit debts on the house.., uh.., apartment.

By will, the bank could arguably be appointed as the main heir?
Outstanding debt in case of death = €300,000
Value of the property at time of death = €700,000
Profit for the bank = €400,000 (simplified)

But that would probably only be possible if there is no other owner/borrower(?).