Financing evaluation conditions - special repayment possible

Hello :)

I have read a lot but need your assessment.
We are planning a Kfw 70 new build.
Total costs: 390,000 €.
Equity: 20,000 €.
To finance: 370,000 €.
Salary: 3,900 €.
We received an offer with the following conditions:
15 years nominal interest 320,000 € bank at 1.86%, 5% special repayment possible.
10 years nominal interest 50,000 € Kfw at 1.45%. Special repayment possible.

How do you evaluate the conditions? Considering the loan-to-value ratio, certainly okay, or still too bad?

I would say considerable conditions for the [Beleihungswert]

Brave to finance 370k with 3900 net income. All of this without equity. And hopefully, all incidental building costs are really included in the total costs.

I honestly wonder which bank would do something like that? Maybe I should have searched longer.

It is certainly brave, but I see no other option. We saved the 20,000 in one year. We could certainly have shown equity of 60 to 70,000 euros in five years. And then? It is already impossible to find affordable plots in the Rhein Main area now. In five years, with significantly more equity, we wouldn't have paid 125,000 for the plot but rather 200,000. Money burned. Therefore, either now or never. The offer comes from the Sparkasse, which is active in our new development area. However, they have also provided 15 million in special loans for this construction project with 160 building plots. Yes, all costs are really included. Several independent experts have reviewed the construction cost breakdown and agreed that it adds up. So no more renegotiations?

I believe you won’t get it much cheaper. And with the price increases, you are unfortunately right as well. Let's see how much longer this will go well.