Is financing a new building feasible?

We should not stray from the topic here

Insurance costs 50 EUR per month, 50 EUR again for refueling. These are the fixed costs. Purchases like tires or inspection are included under Miscellaneous with 200 EUR per month.

And I am not interested in depreciation for now, I care about ongoing costs.

The house costs have been confirmed by the developer so far, the house costs including the garage 238,000, 55,000 for the land, the rest are expansion and incidental costs...

Back to the topic: Is this a reasonable financing?

Back to the list of the pinned post by Tox:
Yours, with your "Miscellaneous," which actually also includes vehicle costs, is very comprehensive.
You don't need clothing and medicine?

And: the banks actually calculate a bit more precisely than flat rates, so please check for yourself!

Or do you want to hear: with such low costs it will work out - with _those_ low planning costs I would already have built three houses! .

Medicine is included in household, clothing under miscellaneous.

We have kept exact records of all income and expenses for the past 12 months, for example, household and miscellaneous are composed as follows. For household, we have cautiously added another 200 EUR.

The car costs me an inspection once a year, which I do myself. On average, that is 100 EUR. Additionally, once a year two new tires cost another 150 EUR. That amounts to just under 20 EUR more per month, with further repairs we estimate 150 EUR per month.

I simply want to know if anyone has already had experience with a comparable financing...

Ok, according to your calculation you have 70€+
If the washing machine needs to be replaced or other purchases like lawnmower, kitchen, etc. are added or other things are not yet included in the cost calculation (see posts pinned under construction costs), where will the money come from?
I don’t see any buffer at all... the car presentation ultimately serves as a placeholder for such unforeseeable or not calculated costs, which simply exist or will come.
I consider it a risky venture, which can end in a lot of dissatisfaction regarding financial difficulties.

Regards

Is this financing realistic? The construction project costs about 390,000 EUR including all incidental costs, 40,000 EUR equity is available.

You can only answer that yourselves. But you should ask/consider 3 things.

1) How would it work if you had to refinance another 5%? Could you handle such an additional burden?
2) What does the childcare situation look like? Is it easy to get a daycare spot for under 3 years? Do you have enough reserves/family support to manage possibly 1 year longer without adequate care?
3) Have you obtained comparison offers for your financing?

Thank you very much in advance for the answers

Regarding 1) A follow-up financing is feasible because part of the installment is "voluntarily" put by us into a building savings contract. The installment can be adjusted or suspended in an emergency, which then has no impact on the current financing, but the remaining debt after the interest fixation period will be higher.

Regarding 2) We have the luxury here in RLP that we can put children in kindergarten from the age of 2, so only catering costs apply here. But it is planned that my partner will return to part-time work after 2 years, so despite kindergarten, most of the second income should still remain.

3) Yes, we have, and we chose the cheapest and at the same time most interest-secure option: an annuity loan with a 15-year interest fixation, a building savings contract that repays the remaining debt, and 2 KfW loans...

We are aware that the first two years with only one income will be tough. However, there is still 10,000 euros in capital for these two years that is not included in the financing...

We are aware that the first two years will be tough with only one income. However, there is still €10,000 in capital for these two years that is not included in the financing...

Is there any other capital available that is not part of the financing? Because if not, what will you use to pay for the kitchen, furniture, and other equipment?