Desirable property affordable? Experiences?

So sorry, your "comparison" is absolutely laughable. You are coming from an absolute low-interest phase that was not normal. Until not too long ago, it was normal to easily spend the value of a house again on the interest. (yeah yeah, I know, but the costs....)

, how did you come up with the 150k renovation costs? What is supposed to/must be done? Since you obviously do not live in an inexpensive region, assume that not much will come out of it if you don’t do everything yourself. So a "dream house" will possibly not really be the case, you should be very aware of that.

Otherwise, I find it very difficult to give any advice here.

I already said that the comparison is not entirely fair. Still, calling it absolutely laughable is nonsense. Because that does not change the fact that far more is being paid here, not only compared to me during the low-interest phase, but also compared to many others. And the loan amount simply does not match the income.
And yeah yeah, you know, the costs... Why do you downplay the costs so much?! They are exactly the problem why the loan amount is so high. Besides the "high" interest rates, that is simply toxic. And on top of that, the renovation costs in this case are not even certain.
Seven years ago, I took out a loan of 220k for my new build including land at just under a quarter of the interest rates. So we’re not just talking about four times higher interest rates, but also about a loan amount three times as high. It’s clear that there is hardly any other way right now, but that does not make it any better.
I stand by it: either the interest rates have to go down, or the prices, or the equity has to be much higher; otherwise, for many people it’s harakiri and the dream of owning a home quickly turns into a nightmare.

I also see it in my own family. My sister has already bought the land but will not start building because this combination has simply become way too expensive. And we’re talking about a civil servant teacher and an engineer here. Yes, it’s really sad, but I’m glad that reason outweighs the desire for a home of one’s own.

Thank you very much for the controversial discussion. What I read between the lines is that it would basically be affordable, but the loss of quality of life and the burden of the loan would probably outweigh the added value of owning a home. We will do another inspection tomorrow and then I hope to be able to better estimate the costs for the renovation. (ggf mit eurer Hilfe)

We will do another inspection tomorrow and then I hope to be able to better estimate the costs for the renovation. (possibly with your help)

What kind of building expert are you taking with you? If you go through it with your limited expertise, it won't help you much. By the way, it wouldn't be much different for me.

What kind of building surveyor are you taking with you? If you go through it with your limited expertise, it won't do you much good. It wouldn't be much different for me, by the way.

We would only bring him along in the step after next, if the project turns out to be at least somewhat feasible. So far it is certain that the oil heating must go, probably replaced by gas heating rather than heat pump, new radiators, new windows. For example, the electrical wiring and water pipes are still open questions. The roof is also still a question mark. If that needs to be done, it probably wouldn't work anyway. The kitchen and bathroom can stay. As I said, more details tomorrow.

But the roof probably won't last another twenty years either. You also have to keep an eye on the deferrable things when calculating.

Have you ever posted photos? I would be interested. Definitely also look at the roof regarding renovation, and how the insulation is. Simply replacing the windows across the board doesn't necessarily have to make sense; you would have to see where the biggest thermal bridges are. I would also go through it with an expert to get a more realistic impression of the renovation costs. Does the house have a balcony? Balconies in such old houses are often downright cooling fins. That and glass blocks are my personal horror. :) If the house is partially underground and the facade needs to be exposed / insulated / sealed there, that would also be a money pit. Everything else is basically affordable. Can you be happy with the kitchen and bathroom for now?