19 new rent-pressure zones are being introduced today across 11 counties.
Rents have increased by more than 8 per cent over the past year.
According to the Residential Tenancies Board, the average national rent is nearly 12-hundred euro a month.
Landlords in these areas won't be able to hike rents by more than 4 percent a year.
The new areas brings to 40 the number of rent pressure zones in the country.
Here are the latest rent pressure zones:
Fermoy LEA, Co Cork
Midleton LEA, Co Cork
Athenry-Oranmore LEA, Co Galway
Gort-Kinvara LEA, Co Galway
Kilkenny LEA, Co Kilkenny
Portlaoise LEA, Co Laois
Graiguecullen-Portarlington LEA, Co Laois
Limerick City West LEA, Co Limerick
Limerick City North LEA, Co Limerick
Dundalk-Carlingford LEA, Co Louth
Dundalk South LEA, Co Louth
Ardee LEA, Co Louth
Kells LEA, Co Meath
Trim LEA, Co Meath
Waterford City South LEA, Co Waterford
Waterford City East LEA, Co Waterford
Athlone LEA, Co Westmeath
Gorey LEA, Co Wexford
Arklow LEA, Co Wicklow