We closed at the small interest rate peak in mid-2015. It was cheaper before and after that. Most expensive loan at 2.99% with Allianz (plus KfW loans, mixed rate approx. 2.1%) and that was still a drama (80% equity was required despite good creditworthiness because we wanted a wooden house; waited 3 whole months after verbal commitment and start of construction for the payout; also slow payouts towards the end because the countervalue was supposedly not there). The subsequently added conservatory was financed with modernization loans at about 3%, which we hopefully can now refinance at 2% interest (here too, a conventional construction loan/top-up with a longer term would have been helpful). Of course, we also missed the child allowance (€36,000!). All in all, had a lot of bad luck with it! And unfortunately, for 6.5 years we are still stuck with Allianz, I hope the interest rates will still be this affordable then, but until then we have thrown several tens of thousands of euros too much into their jaws.