Data relating to the Home Renovation Incentive (HRI) is available from the statistics section of the Revenue website at http://www.revenue.ie/en/about/statistics/index.html. Specifically, the most recently available information on the cost of the scheme is in the Tax Expenditures section of the page at http://www.revenue.ie/en/about/statistics/hri-stats.html.
It should be noted that the value of the tax credits referred to therein is not reflective of the cost to the exchequer as not all credits have been claimed to date. Furthermore, it should be noted that tax credits claimed by an individual under HRI are generally split evenly over a two year period.
In my Budget speech last year, I announced the extension of the HRI for a further and final year, to the end of 2016. Any decision to provide for a further extension would be announced in the context of the Budget and Finance Bill.