Meanwhile the price of a home nationwide increased by 10% in the year to September.
That's a marginal drop in the rate of increase, compared to the previous month.
The CSO's Residential Property Price Index shows the cost of a home rose by 10% in the year to September, down slightly from 10.1% in the 12 months to August.
In Dublin, prices rose by 10.8%, while outside the capital, they went up by 9.4%.
The region outside Dublin that saw the largest rise in house prices was the border, that's Cavan, Monaghan, Donegal, Leitrim and Sligo, where they rose by 15.3%.
While at the other end of the scale, the Mid-East - that's Kildare, Louth, Meath, and Wicklow - saw a 7.5% rise.
The median price paid for a home in the year to September was €346,000.
Teenager From Greystones Named As One Of The Victims Of Icelandic Car Crash
No Turning Back! — Oisin McConville Secured For 2027 In Massive Wicklow Boost
Pure Magic! 20 Years of Keeping Wicklow Uplands Clean
EU Defence Ministers Descend on Wicklow as Government Pledges €10m More for Ukraine
Old Recording Adds To Intense Concern About Road Safety