The Central Bank is making it harder to get a mortgage - in the hope of stopping a new property bubble.
People hoping to buy a new house will have limits on the amount they can borrow, depending on cost of the house and the amount they earn.
The bank's admitted that the rules could mean higher rents for people who don't already own a home.
Our political correspondent Gavan Reilly filed this report for Today FM's National Lunchtime News.
