Construction costs are currently skyrocketing

I assume that the stripping of existing properties is about the obligation to renovate upon purchase and the tightening regulations in this regard. Until now, new construction has mostly been the focus when it comes to making a building energetically efficient.

And where exactly is the problem now? I don’t buy a 50-year-old dump to live in it without renovation. For me, it is obvious that I first renovate the building and bring it up to a certain standard. Many are still lying to themselves when they say: "We’ll do this and that later, once we’ve moved in, and pay for it out of current income."

That just doesn’t work. So first fix up the place, then move in.

I hope you don't take hard drugs.

Said the one with paranoia and 9 accounts....

(...)
So far, the focus has mostly been on new construction when it comes to making a building energetically efficient.

Mostly? However, new builds have now reached levels where "energetically efficient" and "economically sensible" are drifting far apart. Even if owners like to convince themselves otherwise, a KfW40+ house will never pay for itself through energy savings. The Pareto principle also applies here, where the 80% with the greatest leverage is represented by the existing building stock. In new construction, a good standard was already achieved in 2012, which did not need to be tightened further.

Even if the owners like to convince themselves otherwise, a KfW40+ house will never pay off through energy savings.

I don't think the owners are convincing themselves of that, because the focus is not on economic efficiency when deciding on KfW40+.

I don't think the owners are convincing themselves of that, because the focus is not on economic efficiency when deciding on KfW40+.

That's right... It used to be the repayment grant and now it's the interest rate per housing unit that you can get...

Meanwhile, the EH55 is also mandatory. With honest accounting, the additional effort for an EH40 building envelope is very manageable. It is basically just the thicker bricks, and they don't cost more than 20k.