I am advised that the banks disclose information on their loan activities to the various sectors in their Interim and Annual Reports. The information disclosed relates only to loans that have been drawn down and not loans sanctioned.
All relevant disclosures in relation to AIB's Property & Construction loan portfolio are contained in the Risk Management section of their reports, the most recent of which is the AIB 2015 Half-Yearly Financial Report (pages 95-96). This report is available at the following link:
https://investorrelations.aib.ie/content/dam/aib/investorrelations/docs/resultscentre/resultspresentation/aib-half-yearly-financial-report-2015.pdf
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Similarly, Bank of Ireland disclose their Property & Construction loan portfolio in Annual and Interim Reports, the most recent of which is the Interim Report for the six months ended 30 June 2015 and is available at the following link:
https://www.bankofireland.com/fs/doc/wysiwyg/boi-interim-report-2015.pdf.
In relation to the second part of your question, the cost of construction and site development works for new residential dwellings to be offered to the market, it is determined by a complex variety of market, planning and other factors. As Minister for Finance, it does not fall within my remit to account for all the construction and site development works costs borne by developers, and the Deputy may wish to consider addressing his questions in this regard to industry professional bodies such as the Society of Chartered Surveyors Ireland.