Residential property prices have grown by 16.2% in the year to November, according to new figures from the Central Statistics Office.
Prices rose 0.5% in the month of November itself - the lowest monthly increase since March.
This compares to a rise of 2.9% in October and 0.6% in November 2013.
Property prices in Dublin fell slightly last month, down 0.1%, though they were still 22.4% higher than a year ago.
Meanwhile prices in the rest of the country were 1.2% higher in November, and up 9.6% year-on-year.
Property prices in all counties excluding Dublin have now increased for seven consecutive months, marking the most consistent period of growth since the start of the recession.
However despite the strong growth in national property prices over the past 18 months, home values are still down considerably on their boom-time peaks.
Property prices in Dublin are 37.8% lower than they were in February 2007, with apartment prices in the county down by 44.3%.
In the rest of the country, meanwhile, prices are 41.8% lower than they were at their peak in September 2007.
Overall, national property prices are 37.9% lower than they were seven years ago, according to the CSO.