I agree with you that increasing the supply side will decrease the price. However, housing is not a consumable (a large part of the houses are over 100 years o

I agree with you that increasing the supply side will decrease the price. However, housing is not a consumable (a large part of the houses are over 100 years old). It is not movable (a house in Hamburg does not satisfy demand in Berlin, Potsdam only to a limited degree). And it is a basic need (everyone needs exactly one). However, the demand side is driven not only by local demand for housing, but also but "external" demand using housing as a source for investment and rent seeking. The prospective home owner and tenant has to compete with their local salary and capital against international capital buying mostly existing property. But all that money does not make new space appear. There is no factory to build "space". So, like the cigarettes, we want to have less "consumers" of property, and that's why I think it makes sense to lower the demand side by making it less attractive to buy housing for investment. For the people living there, it is a basic need, and that will keep the demand from going to zero.