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.