It's time to tax multiple property holders, page-32

Not workable.

Investment properties can held in Trusts and companies. In fact, lots of Trusts and companies own properties.

Furthermore, what happens to "Property Developers" who might own 10 to 15 properties awaiting sale?

Now, if you open that up as an exemption to Property Developers, then investors will simply register as "property developers"

The simple truth is:

Property Investors make very little profits from the rental properties. The bulk of its profits are the future Capital Gains, not the rental yield.

Of course, the Gov can simply increase supply of more land and encourage people to live in regional areas - which has become a real possibility in light of the last 2 years.