A second report on property prices says the cost of buying a home rose in the last quarter of 2014.
The MyHome report says prices rose by 0.6%, compared to a report from Daft.ie which says prices actually fell.
However both reports, which are compiled from the property retailers' own listings, say the cost of housing rocketed by over 14% last year - a rate not seen since the Celtic Tiger years.
Economist Caroline Kelleher wrote the report for MyHome and she says that sort of increase simply cannot continue.
She said: "This rate of growth is very excessive ansd is not sustainable in the long term.
"What we are seeing now is a moderation in that growth rate and this is likely a reflection of trends in the market.
"For instance, Central Bank lending rates and also the removal of Capital Gains Tax relief which was also introduced previously."