Realistic house construction project

I personally find it tight. Your €1400 should be doable, but then you need quite a long time, or you should look into how you can achieve the longest possible interest rate security. However, I consider the €2000 repayment mentioned here unrealistic. On top of that, there are additional costs amounting to at least €300, more likely €400. Then there are insurances, car(s), reserves, groceries, etc. For the home, people are often willing to give up other things (expensive vacations, etc.). Furthermore, I also consider it utopian to have paid off the loan in 50 years, at least if you are older than 30 and do not have over 50% equity. But you should try to calculate until retirement, or age 65.

I personally have carefully looked at how much I can pay monthly as a rate and then calculated how much repayment I need to be done by my early 60s. For us, that is 3% repayment over 25-26 years. This also fits well from the perspective that after 15 years, half is paid off and the interest rate uncertainty is manageable. In today's times, 2% repayment is, in my opinion, simply too little. With your financing conditions, the nominal interest rate should not be significantly better than 1.8%. That means you pay as much interest as repayment.

Hello, is the life planning completed? How high is the current monthly savings rate, how high is the rent? Are salary increases beyond the collective agreement still possible? 440k with the income is of course a big number. Although the price seems to be solidly calculated. Nothing more should come up.

Is it not possible to reduce the total volume of €485,000 (loan of €445,000) further?

Land and incidental construction costs are standard.
I am rather thinking about the garden (if an immense amount is planned) and of course the house itself.

I have learned that many here in the forum assume a "5% annuity" that should be affordable.
That means with a €1,400 installment, that would be a loan of €336,000.
Conversely, with a loan of €445,000, the installment would be €1,800.

A bungalow with 150sqm for €310K seems quite expensive to me.
Especially since apparently the base slab is not even included as you listed it under the incidental construction costs.
Turnkey? Which provider?

Depending on what is included in the €310K, savings could possibly be made on the fittings... Do all windows need to have electric shutters? Photovoltaics only pay off in the long term; for now, it only increases the investment in an uncomfortable area. Planned lift-and-slide doors, etc. etc.
You can waste a lot of money there.

We are building a 150sqm prefabricated house (1.5 floors with a gable roof) with a good mid-range prefabricated house provider from Northern Hesse with a base slab and Kfw55 (air-water heat pump & controlled residential ventilation) for €232K.
Excluding floors/walls (except tiles in the bathrooms) and fittings beyond the standard.

For materials for self-performed work and upgrades, we are budgeting another €30K.

It is just the question whether the salaries will continue uninterrupted like this or whether possibly a second child break is planned.

About the house (possibly obtaining further offers) and some simple self-performed work and postponing the garden design, the installment could be pushed down somewhat as the loan requirement decreases.

What kind of house is that for 310000?

Hello everyone,

thank you very much for your feedback.

So....
Yes, a bungalow is always a bit more expensive than a "normal" house.
310,000 are calculated by me. After the first discussions, the bungalow came to about 285,000.

I have a pretty good additional retirement provision, which I will partly pay out and partly use to increase my pension.

I thought I would use this payout as a repayment of the residual debt (about 40,000 €).

I agree with you that it is quite tight and everything must go well with my "project". I am just starting to work through all the calculations. Therefore, it is also possible that I will only need 400,000.

So again, many many thanks for your feedback!

One question that still burns on my mind.

We want to build a Kfw 40 plus house. The manufacturer said that a soil survey is not necessary due to the modern ventilation system. Can anyone of you tell me if this is correct?

Best regards

Andreas