The average cost of rebuilding a home damaged by defective blocks has risen considerably over the last year, according to figures published by the Society of Chartered Surveyors Ireland (SCSI).
For a four-bed detached rural bungalow in counties Donegal and Mayo, the average rebuild cost is calculated at €366,300 - up from €317,880 last year.
A home with five bedrooms or more will now cost €479,520 to rebuild, compared to €421,470.
A two-storey home in a rural area with four bedrooms costs €384,300 to rebuild, an increase of €45,200.
Last year, the Oireachtas passed the Defective Concrete Blocks Grant Scheme and it was agreed at the time that the SCSI would update the construction costs annually to take account of inflation.
The Government has insisted the scheme allows for 100% redress for home owners whose properties are defective.
However, campaigners say it amounts to just 80% redress when all other costs are taken into consideration.
While the SCSI report makes its calculations using the most up-to-date prices for materials and labour, it does not include the cost of current building regulations.
Instead, its figures are based on pre-2008 regulations and the SCSI said it remains its position that the "best practice is to build to current regulations or to exceed current regulations."
Donegal Sinn Féin TD Padraig MacLochlainn renewed his call for the scheme to be led by the Housing Agency saying this would deliver more for both the home owners and the State.
The Expert Group on the Enhanced Defective Concrete Blocks Grant Scheme will now assess the SCSI figures and then make recommendations to Minister for Housing Darragh O'Brien.
