DNG also said that prices of second hand homes in the capital increased by 2.2% for the year – the first annual rise there has been since 2006.
The estate agents said that the average value of a house in Dublin was €258,529.
According to the report, which analysed annual figures from the Property Price Register, 2012 also showed an increase of activity in the residential market across the country with over 21,725 transactions, up 27% on 2011.
Over €4.3 billion was spent on property sales during the year with the average price paid of €201,771 on a nationwide basis.
However DNG said the building industry in Ireland shows increased signs of continued slowdown with the overall figure for registered completed buildings last year expected to just exceed 8,000 units in total compared to 10,480 for 2011.