Strategic planning for house construction - financing, etc.

Hello community,
I have been following the topics with great interest over the past few months and now have a concern myself.

My wife and I are currently renting a house and paying €1,350 warm, so we believe that this money would be better invested in a loan, hence this thread for discussion with the experienced and professionals.

Key data:
- Family income: €4,800 net
- Savings possibility (after all deductions and buffer): €1,300 monthly
- Equity: €10,000
- Children planned in 2-3 years; (currently no children)

We want to build in about 5 years (+/-) so that we do not pay so much "dead money" for expensive rent.
We have planned 5 years because we currently have little equity. Our house construction + land is estimated at about €350,000.

Questions:
- Does it make sense to save up a high building savings amount, for example €200,000 (100k equity, 100k loan) over the next 5-7 years and finance the rest via a normal bank loan? (then it would be 2 loans...)
Or does it make more sense (due to the short term and additional costs with the building savings contract (fees etc)) to conclude a building savings contract for the bare minimum (Riester + asset-building benefits) and put the rest monthly into a daily allowance account/savings account?

- Is building a house with these means advisable/possible at all?
I mean, if we save the rent + our saving possibilities (- buffer) together, we should be able to repay €2,000 or more per month. That way we should be done in about 15 years, right?

- Does a building savings contract make sense at all with the above data and the goal to build in 5-7 years (preferably sooner rather than later) or would it be better to save the money with good conditions and interest credit? But then the interest rates might be so high in 5-7 years that a building savings contract would have made sense after all (interest rate security)?

- Are there any other good and advisable tips for us?

Questions upon questions and I don’t know how to handle our key data effectively to reach the goal.

I am hoping for good answers and your support.

Thank you very much.

How old are you? You write that you can save 1300 EUR monthly. Why then only 10 TEU equity? And with 4800 EUR net, repaying over 2000 EUR is simply not possible, especially if children are planned.

Hello,
We are 26 years old.

10k€ because of the wedding + car purchase. Additionally, my wife has just finished her studies, so there is now a second earner.

The 2000€ refers to the cold rent of 1100€ + 900€ savings (instead of the current 1300).
That was my rough calculation.

I hope for further responses.

We had a monthly net income of €5000 as career starters before the children. Within a few years, we saved over €80,000 in equity. Then two children came, and we live on just under €4000 net. Children cost a massive amount of money, and if your wife or you do not have the child cared for by others directly at the age of 8 weeks, then you definitely have to reckon with less net income. As long as you are DINKS, save as much as possible!

Hello, thank you for the reply. I will take that into consideration. Can anyone else help me with my questions? :)

Is a building savings contract worth it now? It depends on how interest rates develop,... That can only be answered with a crystal ball. Besides, you are then tied to this institution with the building savings amount, which doesn't have to be a bad thing.
Will 350k € be enough for you to build in 5 years? No one can tell you,...
Will your net income be enough in 5 years if you have 2 children? No idea,...
Therefore: As already written above. Try to save as much as possible and see in 3 years, when the kids arrive, how much you have left for repayment. Then you will see if this amount is enough for a house for you.
Alternatively: Buy a plot of land now and try to pay it off before the children arrive.