Donegal was the only county to see a larger increase during the second quarter of this year.
The growing population of a Laois town is the main factor driving up housing demand.
That's according to the Real Estate Alliance, after the county recorded a 3.2% increase in the cost of a semi detached house in the space of just three months.
Only Donegal recorded a bigger increase over the course of the second quarter of this year.
The average price is up by 1.4% in Westmeath and 1.2% in Offaly.
Seamus Browne from REA in Portlaoise work still needs to be done to meet demand:
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