They rose by 2 per cent in the year to June, compared to 2.6 per cent in the twelve months to May.
The highest house price growth in the Capital was in South Dublin at 3.6%, while Dun Laoghaire-Rathdown saw a decline of 4.0%.
Outside Dublin house prices rose 3.6% and apartments by 6.1 per cent in the same period. The largest rise in house prices outside the capital was the Border area at 14.7%, while the Mid-East recorded a decline of 0.1%.
Wicklow was the most expensive county in the region with an average price of €349,547.
The Garden County is the second most expensive county in Ireland after Dublin.
Overall property prices increased by 2.0% nationally in the year to June this year that compares to an increase of 11.9% in the twelve months to June 2018.