did you overlook the current savings rate of €1200???? Besides, the €950 rent will no longer apply, but about €500 in additional costs will come... I don't see the financial situation as too bad now, BUT...
The OP is aware of the previous consumption behavior and has also explained that both are willing to change this after buying the house,
The expenses are already partially calculated quite well. For example, the necessary clothing is missing. For groceries, you should count half of the eating out expenses, because going from 100% to zero is not so easily implemented, and on the other hand, if you can no longer afford eating out, you might buy somewhat higher quality and, of course, more groceries. I definitely see the child angle as well. I will explain that further below.
What living expenses has Dr. Klein calculated? Does Dr. Klein know that it is "only" property under the WEG? Please google it... it is possible that the interest rates are higher there.
Some "feel" poorer with a house because then the Italian restaurant, the long-distance trip, the spontaneous phone, and Audi are no longer possible.
I would not underestimate such a situation!
I see your reasons for the desire to own property in the misconception that you then have no more unplanned expenses. Mistake: you actually have more unplanned expenses when owning property than when renting.
.... to buy a well-maintained existing property or to build (and thus "never again" or for a long period have no unplanned expenses).
Our motivation for buying is quite simple: We already pay a not insignificant amount monthly for a two-room apartment. And we know what you get here for a comparable three-room apartment (which we would have to move into with a child)
Here the misconception reason is given that renting money is thrown away. But I see a lower rent than your calculated financing rate. And that will not change anymore. Sure, after 28 years... but I do not see this as your true reason why ownership is your desire.
In the same breath, the missing room for the child is mentioned.
So the fact is: I read contradictions and no fully thought-out reasons.
I do not read that you want a garden, responsibility for property, or comfort enjoyment etc.
When I then read "but" 3! times....
Clearly you are right. But...
We know that, we have always lived very well, but...
You are, of course, right. But the most expensive car was...
... alternating with...
7!!! times something about friends who own property or people who buy something
... which we are also constantly asked about by acquaintances and friends...
... I do not see that you understand what was written to you.
I would advise you or you to not consider others, but your own situation. It seems to me as if you want to keep up: with marrying, with the house... one starts, then the next follows with ownership, the third feels the pressure, etc. It is the same with having children. Women/girlfriends have other topics of conversation, then you don't want to be an outsider and nurture the child wish.
That you might wonder how some manage actually shows your thinking that "if he/she, then we can too," but life is not a competition. Also, there is the most lying about money. And if someone has inherited, then so be it. Then it is their money and their experience. You have to look at your own situation and not compete.
Earlier, all these "serious" topics like house, children, etc. were so far away that we only now discovered the necessity of saving for ourselves (and of course want to maintain this).
In that respect, you expressed it well: necessity of saving.
When I look at everything as a whole, this scenario might not be far away at all
At the end of the day, you have a full financing, a house in need of renovation, a toddler, and no more money for consumption or vacation.
But first of all, I would suggest in your place to deal with what actually makes you happy about a house (and not your friends)
Then another advice: a low house fee does not protect against costs, on the contrary, it can mean that giving up management and not adjusting reserves means that a five-figure sum for repairs must be released quite quickly.
Since the age of the house is unknown, I would first commission an expert to take a look at the property.