Assessment of financial feasibility - is it doable?

In my first post, I pointed out that the bank had already offered repayment of €1100-1200, an interest rate fixed for 30 years, and an interest rate of about 2.0%.

I can hardly believe that constellation. Over 100% financing and 2% over 30 years? Effective? Annuity loan?
What did the bank say about the land situation? What did you specify there?
Was that an offer after credit check? Or only subject to conditions?

Honestly, think about it again.
If you want a more well-founded answer here, you have to address the questions, otherwise it's just poking around in the fog.
From my point of view, the following is still open:

- Land: how to finance
- Construction costs: are they realistic (where does the figure come from)
- Details of the financing offer (what conditions)

I can hardly believe it in this constellation. Over 100% financing and 2% over 30 years? Effective? Annuity loan? What did the bank say about the land situation? What did you specify there? Was it an offer after a credit check? Or only conditional? Honestly, think it over again. If you want a more informed answer here, you have to address the questions, otherwise it’s stabbing around in the fog. From my point of view, the following is open: - How to finance the land - Are the construction costs realistic (where does the figure come from) - Details of the financing offer (which conditions)

You can think for yourself how the interest rate came about, right? If you go to the bank and say you want to borrow €300k and have a plot of land worth €55k, this is counted as equity. Then you are at a loan-to-value of 84%. With a little fudging of the equity subsidy, the bank manages to get it under 80%. Of course, it is not said that this might have to be repaid privately. EDIT: I just looked at the general market conditions. With a pure loan fixed for 30 years, €300k, 80% loan-to-value, and 2% repayment, you get at best 2.22% interest. Sorry dear OP, you must have misunderstood something.

Sorry dear OP, you must have misunderstood something.

That's why I wanted to ask kindly

I already mentioned that further above. 55000 including additional costs

I think you still don't understand. The owner will hardly sponsor you development costs and earthworks. You are juggling with fictitious values when building a house.

At 2 percent repayment, I come to about 1,150 euros installment (not repayment!). If you are paying 900 euros cold rent anyway, then you should be able to manage that. The question is whether it actually stays that way... you apparently have no buffer. If you really find a bank that gives you 2.0 percent over 30 years despite low equity, then congratulations.

Whether it will be a private loan or another model is still up in the air. Therefore, I don't think it can be counted as equity, right?

Hm, what did the bank say? Did they mention the limit of 300,000 without you mentioning the land? Or did you mention that land is AVAILABLE, and the bank counts it as equity?

as well as coverings and painting work will be done by ourselves. Additionally, the outdoor area is to be landscaped by ourselves and the carport will also be provided in-house.

The materials also cost a lot. Floor coverings around 10,000, work tools, paint, plants and wood... just the paving alone costs a lot of money.

However, we plan to keep the burden in the range of 1100-1200 total.

Does the sponsored money for the land have to be paid back or is it an early inheritance?

We are not opposed to either. For example, we do not want underfloor heating. Photovoltaics should be included.

Phew, the standard stuff you don’t want, the option you have to afford you want included?!
Or do you mean a solar system for hot water, which you have to include in the energy saving ordinance anyway, if you want a cheap way to meet the energy saving ordinance?
What if your girlfriend can get a good job 100 km away after her studies? You could find something anywhere.
I think at least your education should be fully completed, since after that some people’s world opens up, and then a house would be a burden.

And without underfloor heating it can barely be sold without a loss.
I also think you are not yet as informed as you should be as a prospective buyer (land reserved). There is quite a lack of basic knowledge. That’s not a big deal and not bad, but at the phase of buying land and talking to the bank you should know quite a bit more.
Read here in the forum in the coming weeks, and you will understand what we want to convey to you here.
In 3-4 years is also a good time to build.