Is financing a new single-family house feasible?

He hasn’t been seen since Friday. But that doesn’t have to mean anything yet. Sometimes you have to let it sink in a bit. You’re emotionally quite attached to such a construction project, and the numbers of the TE are tight, most here agree on that. Accordingly, the feedback here wasn’t exactly optimistic, you have to digest that first. I’m curious how they will decide in the end. I don’t find the numbers for the pure project all that dramatic now. Of course, there’s not much room for maneuver. If something unexpected comes up, you’ll probably have to make cuts with that budget. With our first construction we had a few "flexible" items; in an emergency, we could have saved something there. For example, we could have made the kitchen less fancy. Outdoor facilities / paving can be postponed in the worst case. It’s not desirable, but you could live with it for the time being. You can contribute your own labor for flooring and painting work.

The increase in interest rates is also very clearly evident here. At an interest rate of 2.6%, the amount is 321K€ and a few months ago, with an interest rate, it would have been 435K€ as the purchase limit. It's just a tight situation now.

Yes, and many started with 1% repayment, low equity (100% financing) and interest rates < 2% - you can always sell with a profit. If now the interest rates for the follow-up financing are higher, the remaining debt is still high and the fantastic book values from 2021 cannot be maintained, it will be tough.

Well, there is still some time. The current interest rates are still below those from 10 years ago. If you disregard the insane 1% repayment financing, you should be able to keep the rate from 10 years ago with follow-up financing. Due to inflation, that is not such a big deal anymore.

Since we're on the topic of flat-rate limits, etc. I find it interesting that just a year ago a financing of ~110x net was considered ... well still ambitious but within an "okay" range (I often read about 100-110x monthly net max, sometimes even up to 120x). But now, due to the increased interest rates, it’s becoming significantly less comfortable. :confused:

The flat-rate limit has no real relation to the interest rate. You can now forget the 110 times the net income. If the interest rate should be 3.x instead of 1.x %, then it just doesn't add up at all. Then it’s more like 80 times or so the net income. In principle, this flat rate should be adjusted according to the interest rate and the remaining term until it is fully repaid. Just applying a flat rate is not meaningful. It’s like with statistics. Only the combination of statistics leads to a reasonable statement. Or never trust any statistics you haven't falsified yourself... A very high net income also doesn’t help much if you’re already in your mid-50s and haven’t saved any equity. Then the installment will probably be over €5,000 per month including interest on half a million. But 110 times the net income would fit perfectly...

and has not saved any equity.

Equity will become very important again. The era of cheap 100% or more financing is coming to an end. After all, the thread starter already has €30,000 plus €10,000 in reserve.