That's a different issue to the price problem.How would that provide any more houses though if international investors are the real culprits?
If 2 people want to buy one apple and the guy with the most money has €10 then the apple will cost €10.
If 200 people want to buy one apple and the guy with the most money has €10 then the apple will cost €10.
If all of a sudden someone turns up with €25 of brand new printed money then the apple will cost €25. It matters not if there are 2 or 200 other perspective buyers.
Back to houses.
All that printed money is also inflating the price of the materials used to build houses, the land the houses are built on and just about everything else in the supply chain. As long as the net return on the investment is above the interest rate a leverages investment is being charged or the returns from Bonds etc then it will stay in property. Remember that pension funds have to keep money in safe asset classes and that's what Irish property is seen as.