Which financing option for a new single-family house of 140m²

Hi everyone,

we are planning to build a single-family house; the plot and developer are available. We now have two proposals on the table for how we can finance it. Currently, we only have 1 income available – a second one will come as soon as my wife goes back to work.

1st option:

Lender	Amount	Interest rate	Fixed interest period	Repayment	Extras	Monthly burden	Remaining after fixed interest period
IB.SH KFW 153	120,000	0.95%	10Y	3.69%	1Y payment-free, €18,000 subsidy	€394.64	€66,623.06
Provinzial	229,000	1.30%	30Y	2%	9M free of readiness interest, 5% special repayment, 3x change of repayment rate	€629.75	€61,065.84
Sparkasse	171,000	1.05%	15Y	2%	12M free of readiness interest, 5% special repayment, 3x change of repayment rate	€434.63	€118,453.98

=> €1,459.02 burden/month

2nd option

Lender	Amount	Interest rate	Fixed interest period	Repayment	Extras	Monthly burden	Remaining after fixed interest period
IB.SH KfW 153	120,000	0.95%	10Y	3.69%	1Y payment-free, €18,000 subsidy	€394.64	€66,623.06
IB.SH Flex	15,000	0.8%	5Y	3.78%	1Y payment-free	€57.26	€12,635.61
ING	387,000	1.06%	20Y	2%	12M free of readiness interest, 5% special repayment 2x change of repayment rate	€986.85	€214,651.94

=> €1,438.75 burden/month


If you need more information, let me know. Intuitively, I am currently leaning towards option 1.

Option 1 too many lenders for me and too low repayment. Option 2 you repay more