The average cost in the greater Dublin area is over €450,000.
A new report has revealed the cost of building a home in Laois, Offaly, or Tipperary is on average €370,807.
This compared to €460,000 in the greater Dublin area.
The Society of Chartered Surveyors Ireland Real Cost of New Housing Survey has revealed the stark differences in the cost of building a home in Ireland.
The most affordable counties and regions are Laois, Offaly and Tipperary, and the Northwest of Ireland where the cost is lowest at €353,896.
Hard costs, such as construction and building materials make up most of the bill for building a new home at 41% of the overall cost.
Soft costs such as land and development, and VAT are next at 14% and 10% respectively.
If you were to build a home in Offaly, Laois or Tipperary, the likelihood is your new home will be worth less than you spent.
The current market value of a new three-bedroom semi-detached home in these counties is just over €318,000.
A full €52,000 shy of the estimated cost of building one.
The SCSI say the state needs to focus on resourcing local authorities and An Bord Pleanála, and to reset housing targets based on last year's census results.