Savings beginner with questions about the plausibility of the "rough" plan

So I could afford a house value of EUR 296,607....
And there is still no fancy furnishing or anything else included

Again: Apart from the notary and taxes, the following cost items absolutely do not contribute to the house value and are usually not included in the offer from a construction company:
Built-in kitchen (or other furniture)
Soil survey
Surveying
Structural engineer
Building permit
Costs for various media connections (sewage, electricity, water, telephone, etc.)
Garden work
Terrace
etc.

Again: Apart from notary and taxes, the following cost items also absolutely do not contribute to the house value and are generally not included in a construction company's offer:
Fitted kitchen (or other furniture)
Soil survey
Surveying
Structural engineer
Building permit
Costs for various utility connections (sewage, electricity, water, telephone, etc.)
Garden work
Terrace
etc.

In principle, you are right, although I would like to express slight doubts regarding the terrace, the utility connections, and (not mentioned here) garage/carport.
A house without utility connections is unusable. It may not increase value, but at least no value reduction occurs (if they were missing).
Terrace/garden – pointed out some time ago that an attractive outdoor area can possibly have a price-increasing effect during sales negotiations.
But basically, you are right.

: That is of course true. And I have already "somewhat" understood it. (At least that I should definitely take a close look at it). In my calculation I referred to a "used" house to see what would be possible...

In principle, you are right, although I would like to express slight doubts regarding the terrace, the media connections, as well as (not mentioned here) the garage/carport.
A house without media connections is not usable. It may not increase the value, but at least no depreciation occurs (if they were missing).
Terrace/garden – pointed out some time ago that a nice outdoor area can possibly have a price-increasing effect within the framework of sales negotiations.

But basically, you are right.

You too are basically right.
As far as media connections are concerned, the bank probably does not care whether you have them at the completion of construction or not. They do not increase the value, nor do they decrease it; they are simply irrelevant to the bank and thus also for the interest rate offered on the financing.

Since you want to build a house to live in and not a house for subsequent sale, even a little garden digging, planting roses, and putting up a wooden shed will not increase the value of the house in connection with the financing.

For a 10% financing you would need 110k equity and for a 20% financing (from here the interest rates only become really reasonable) 150k equity.

There are also banks that consider the KFW loan as equity.


0.2% less interest, 5 years longer term... That might look different already.

300,000€ is not much up here.

As far as the utility connections are concerned, the bank probably doesn't care whether you have them at the time of construction completion or not.

What value can the bank achieve in the event of a sale if the house A) has running water and B) does not have running water? Or what do you mean by utilities? In my opinion, the house connections clearly count as production costs and are recognized.