A new report shows the number of property transactions rose in all but four of the capital's 22 postal code districts in the first six months of the year.
The research, carried out by MyHome.ie based on an analysis of the Property Price Register, shows there were 7,461 sales in the first half of 2017.
The most expensive house sale was for €8.45m for 11 Shrewsbury Road in Dublin 4.
It says almost 300 houses were sold for €1m or more in first six months.
The postal code with the highest average price was also Dublin 4, with an average price of €890,000.
It was followed by Dublin 6 on €740,000, Dublin 14 on €558,000, Dublin 6W on €529,000 and Dublin 18 on €510,000.
The lowest average prices were found in Dublin 10 on €153,000, Dublin 17 at €180,000, and Dublin 11 on €220,000.
Dublin 15 was again the postal district with the largest number of sales - 751 - followed by Dublin 18 on 387 and Dublin 8 with 366 sales.
Other areas which showed a significant increase in activity included Dublin 13, up 35%, Dublin 22 up 31% and Dublin 17 up 25%.