That seems like a very weird solution > who claim that they need the new rental rate They don't claim that, they want it (greed) If you want to prevent empty

That seems like a very weird solution > who claim that they need the new rental rate They don't claim that, they want it (greed) If you want to prevent emptyness, it's better to directly fight that. E.g. say that the government will set a rental rate after 12 months of no renter. That will force property owners to set a fair rent that the market will bear or risk the government setting it at way lower rate.