This is one of the key issues - a purchaser will be buying based practically entirely on yield, but it will be baked in to the new system that the yield will be artificially deflated. This alone means low sale prices or no purchasers at all - what investor would buy a older property with a low rent and a permanent tenant which needed work?However, the main concern, as noted before, is that there are now many scenarios where the house prices cannot achieve its open market value as it will have to be sold with a tenant. Home occupiers will not be able to get a mortgage with a sitting tenant, and thus the value of the house will be tied to the rent. But that rent is mandated to increase at lower than inflation. The landlord will have an impaired principal value.