Is financing feasible? Finished house for the money?

Well, it won't stay at 2%, as already hinted by HERR_bau. My salary will increase anyway as a civil servant and I have very good promotion prospects. My husband will also earn more at some point. And we'll be finished in 35 years according to the offer from Interhyp. So still before retirement, especially since there will be various extra repayments through inheritance.

Since March, we have been on average 0.25% more expensive again. In addition, the main loan from Interhyp is fixed at only 15 years!

The muscle mortgage of 25k € could still be problematic. You don’t get that back with wallpapering and painting. How did you come up with that amount?

So today KFW 124 is 56€ or 220€ after 3 years.
The 153 is 145 or 387 after 3 years.

That leaves 893 for the loan if you calculate with 1500. You would have to get money for 1.57% with 2% repayment.

With that loan-to-value ratio, that is not feasible. At 20 years, it will be around 2.2%.

Even at 10 years, at least 1.7% is still due. But 10 years combined with the low repayment, and the high loan-to-value ratio (and 1550€ per month) results in a residual debt after 10 years that must be refinanced of 267,000€! (We’ll ignore the 2nd KFW with still 72,000 outstanding here.)

I stick to it; the project is simply too expensive.

Something would suit you where you start with 3% initial repayment for 20 years. And then we are at a loan amount of 350,000.

And inheritances should never be included as long as the inheritance is not distributed (a keyword being care case).

Since in 10 or so years everything will be much more and better.

4.5% is not unrealistic for 10 years.

That means the 35-year financing becomes a 56-year financing.

Or to keep the total 35 years, the rate has to be increased to €1950.

@powergirley: By the way, in a parallel topic, it's about current Interhyp conditions for KfW 50+~285k bank loans. So basically almost the same,

but without the large 100k KfW and 15k less bank loan. (115,000 difference!)

And I think the OP also has a better loan-to-value ratio. You have to expect a higher interest rate anyway than you were offered in March.

And his rate is around €1370.

That would make me think...

For me, it is always astonishing how one can just generally say without personally knowing the consumer that it doesn’t work, is too expensive, too risky, etc. One calculates an apple and the other talks about a pear. That may all be true, maybe 20,000 euros really are underestimated, but I cannot judge that based on the information available here. Topic financing. Why not fix for 20 or 25 years, combined with possibly subsidized (since Baden Württemberg) KfW 153 fixed for 20 years and KfW 124 fixed for 10 years with protection against a building savings contract, for example with the F60 from Signal?? What speaks against a term of 35 years if I’m not yet retired by then? Why can one even make a general statement about the sustainability of the capital service based on the information available here, without knowing the consumer individually, especially without inquiring about other options and improvements? What is so bad about the offer (apart from the fact that the interest rate probably will no longer fit, but that is currently calming down again) from Interhyp (it will probably be the Ing.Ing-Diba and there are even better ones) to begin with?

Indeed, it might be quite a hot undertaking to manage such a volume without equity, and of course it doesn’t just happen quickly and easily, but one can think about it and I personally can only discourage it, for example, after I have seen the construction documents and the overall calculation, have personally gotten to know the consumer and their financial situation, and have discussed all other possibilities and deemed them not feasible. It may also be that one will come to this conclusion, but first of all not generally and certainly not with such insufficient information and especially not because one only finishes paying off their property by retirement age.

But now you forget that no financial experts are being asked for ADVICE here, but people who have gone through the building process themselves or are currently going through it. Sure, these are not in-depth financial analyses. But that's not the point. Here, based on the given information, either building is advised against or approved. What people then make of it is their own business. The forum members simply rely on their experiences.