Shorton proposes that only new buildings will be able to claim NG ...So if you bought a newly constructed building and wished to sell it later on it would be classified as an existing property with no access to NG and thusly will attract less buyers. Same for the existing grand fathered properties .
This is the usual Labor illogical claptrap.
Shorton also intends to expand this to shares bonds and other financial vehicles....there goes margin loans for a start....