What I especially see there is a direct consultant commission of 2,000 euros.
Why are both Riester contracts each for 75,000 EUR? This is neither optimized for income nor anything else. Riester is rather a suboptimal product without children. With children and low income, it looks better. But that also only applies to one half.
Normally, with combination products and a 3/3 rule, you say 1/3 equity, 1/3 bank, 1/3 home savings contract.
Here it is more like 1/2 equity (due to land and cash), <1/4 bank > 1/4 home savings contract.
You can do it that way, but in my opinion, optimal is something else.
I would reduce the Riester subsidy so that there is an optimal ratio of contributions and allowance and not a cent more. Insuring the KFW loan via a home savings contract... okay, you can do that, but I would rather increase the repayment directly and choose 10/1/20 instead of 10/1/30. The interest rate risk for the remaining amount is manageable.
And then cover the rest through a bank.
How is it actually? Isn't there even 100,000 EUR per residential unit in the 153 loan nowadays? I am not up-to-date on that right now.