Dublin is expected to run out of vacant housing stock this year, according to the ESRI.
The Government's economic think-tank is publishing new research this morning predicting significant housing shortages in the Greater Dublin area.
It says a rise in population will mean more than 54,000 housing units will be needed in Dublin, by 2021 - while more than 23,000 units will be needed in counties Louth, Meath, Kildare and Wicklow.
Associate Research Professor with the ESRI, Dr Edgar Morgenroth, says if the shortage is not addressed house prices will continue to rise.