Minister Michael Noonan is expected to announce widespread changes to the help to buy scheme today.
The plan aimed at helping first time buyers has been met with criticism since it was announced in the budget last week.
The mortgage percentage threshold and the value of property to which the scheme applies are all expected to be lowered.
However Sinn Féin’s Pearse Doherty says the proposed alterations can’t change the fact the scheme will drive up house prices.