House prices nationally increased by 6.5% in the year to December 2018, according to the latest figures from the CSO.
The rate of growth was just less than half of the 12.1% increased in prices recorded the previous year.
In Dublin, house prices rose by 4.2% last year.
The Midwest region saw the largest increases in 2018 with prices up by over 18%, while houses in the West increased by 11% last year.
The most expensive area to buy a house was Dun Laoghaire-Rathdown, with a median price of €535,000, while Longford was the cheapest area at €94,500.
Median house prices in Mayo in 2018 were €125,000 compared to €179,000 in Co Galway, and €105,000 in Roscommon.
The national average paid for a property last year was €291,000.