The Housing Minister says the shared equity scheme will be available by mid-November.
The scheme will help first time buyers to bridge the gap between what they can afford and the cost of a new build property.
The State will take a stake in the property, which will be free for the first five years followed by a low interest only payment thereafter.
The plan commits to delivering 300 thousand homes by 2030.
Minister Darragh O'Brien admits that it will be a challenge.