A new report shows rents rose by almost 10% nationwide last year.
The latest rental survey by Daft.ie shows the national average rent was €950 between October and December last.
That is a jump of 9.7% on the previous year.
But it also says that the national trend is being driven by a moderation in Dublin rental inflation, which has eased from 16.5% in April to below 10% by January 2015.
Rents across the four commuter counties were 14.1% higher than a year previously in late 2014 - the first time in this cycle that inflation has been slower in Dublin than in its commuter counties.
It says this is because of "a significant tightening of supply."
Rental prices around Ireland | Source: Daft.ie
Nationwide, there were just over 5,200 properties available to rent on February 1st - down more than a quarter on the same figure a year previously.
This is the lowest level of availability nationwide since May 2007. Outside Dublin, rents also continued to increase at a slower pace.
Galway saw a 7% rise, Limerick was up 6.2% and in Waterford city rents grew by 5.1% in the fourth quarter of 2014.
Economist at Trinity College Dublin, and author of the Daft report, Ronan Lyons told Newstalk Breakfast that Leinster saw a faster growth than other regions.
