It follows the purchase of 135 homes in Maynooth by an investment fund.
The government will have to act to prevent investment funds buying up entire estates of new build houses, according to the Tánaiste.
Legislation is being worked on to reserve a certain amount of new builds for first time buyers.
Round Hill Capital and its partner SFO Capital, have purchased 135 homes in Mullen Park in Maynooth, and 115 homes in a new Dublin estate.
Tánaiste Leo Varadkar has said the government will need to intervene to stop this happening:

Man (20s) Seriously Injured During Alleged Assault In Kildare Town Was Found Unresponsive At 3.15 This Morning
Tóibín: “ Extreme” Views Highlighted In Secret WhatsApp Groups Will Not Be Tolerated, As He Points To Diversity In Aontú
Gardaí Investigate Alleged Attack In Kildare Town
“And My Daughter Won’t Like Brown People”: Aontú Fires Kildare Youth Leader Over Racist Messages
Michael D. Higgins Congratulates Catherine Connolly Following Decisive Kildare Vote
With Kildare Boxes Opened And Postal Votes Being Counted, Connolly’s Path To Áras An Uachtaráin Seems Certain
More Voters Turning Out In Kildare North Than In The South Of The County
Kildare Sparkles In Tidy Towns Competition With 11 Gold Medals Awarded