Current building culture and energy-saving ordinance-compliant new development areas

I would much prefer if the old, far too small and often uninhabited townhouses in the town center were demolished to make room for something new. Following the motto: two become one. The consumption of land on the "greenfield" already worries me and even gives me a twinge of guilt. For this, the municipality would probably have to make good offers to the owners of the houses or "expropriate" them; in any case, this could only be done through an appropriate development program that would legally have to overcome some hurdles.

In Hamburg, the conversion of old city villas into rental apartments is actively promoted, and on the large park-like plots, second-row development is also permitted. However, this then also involves multi-family houses, not single-family houses. The goal of spatial planning is that a city is a city and therefore densely populated and built-up. And countryside should remain countryside, because countryside also means green land, farmland, etc. Those familiar with it know: farmland on Fehmarn costs up to 80,000 per hectare. These are exorbitant prices. Anyone who wants to acquire a profitable farm with 500 hectares today can calculate for themselves; under 20 million, nothing works anymore in Mecklenburg-Vorpommern...Karsten