well, no, in communism the is no private property, your computer needs to be shared with the rest of the population that are not so lucky to have one. What are you? Some greedy ceo or something?
The GST part is to incentivize new construction, and you are right it will increase profits but without increasing prices for the end consumer, on the contrary if more builders see this as an attractive opportunity, there will be more units built which increases the offer and when the offer goes up, the prices goes down.