Financing - what is realistic?

Hello, we have been advised by Bien-Zenker and Baufritz. Both independently come to an amount of about €1,300-1,400 monthly based on our wishes (3 children's rooms, etc.), or over €400,000 in total. With a monthly income of €4,200, it should work out mathematically, but in practice, it looks different. Therefore, in the coming months, we at least want to simulate it, i.e. transfer €1,400 minus the current cold rent (€550) = €850 at the beginning of each month to the daily allowance account and then see how far pure saving can get us and whether one can still live reasonably off it. Additionally, next week we will be advised by a financial consultant from Bien-Zenker, to see what else might be possible.

Just please keep in mind that 2 months is not a benchmark. Usually, people still have many supplies in the freezer. There are also stocks of household chemicals, etc., that one can use up first. The washing machine or the refrigerator will not just happen to break down within those 2 months. The wardrobe will last over the 2 months. Therefore, you have to add about €500 to what you consume monthly to get a realistic picture.

You shouldn't be blinded by financial advisors. Especially not if they come from a [Bauträger]. They earn twice.
First, it was supposed to be a house over 280k and now a new build over 400k. Quite big jumps.
In my opinion, neither is realistic with a savings rate of 200 € / month.

I honestly cannot understand your approach at all, and in my opinion, it shows great recklessness.

At the moment, not even the 250k is feasible, so how do you want to finance over 400k???
You can actually save yourself the financial advisor. He will probably say it’s possible because he takes his fees and you still have about €2000 left. But that won’t help you if you can’t handle it financially.
And how do you suddenly want to save €600 more per month? That is completely unrealistic. That might work for a few months, as Computersylvia wrote, but on an annual average, when things like annual insurance/car inspection/car tax also come up... that will most certainly not work. To put it somewhat exaggeratedly: you can cancel a subscription you don’t use, but you should not save on bread.

And even if it works, the calculation doesn’t add up. Because besides some ancillary costs, which will probably be a bit higher, you have also forgotten small things like building reserves, homeowner’s insurance, disability/term life insurance (if not yet available). Otherwise, the financing will blow up in your face at the latest if you, as the earner, drop out.

And even if you could manage that by saving: Have you ever calculated how long you would have to pay with an installment of 1300-1400€ and a loan of 400k? 40 years? 45 years? Then you would be at least 75 and long retired.

Even if you lived frugally, I consider a loan of 400k € with your income and the low equity almost a suicide mission.

Do you want to subject yourself and especially your family to this almost preprogrammed financial disaster?

I actually wanted to write something else now, but after reading the OP's jump from used real estate to Baufritz/Bien-Zenker, where it was already advised against taking out a loan of 240,000 with these numbers, I am now somewhat shocked myself at how unreasonable and resistant to advice some people are...

The entire forum is full of sellers' rosy calculations, price increases and risks in construction that are rarely predictable beforehand, and of [BNKosten] that one has never heard of before... and now the OP comes with a top-tier house and wants to live on a shoestring for 2 months. Well then: bon appétit!