The official homelessness data reports provided by housing authorities are produced using the Pathway Accommodation & Support System (PASS), the single integrated national data information system on the State-funded emergency accommodation arrangements that are overseen by housing authorities. These reports are published on my Department's website as soon as they are available and can be accessed using the following link:
http://www.housing.gov.ie/housing/homelessness/other/homelessness-data.
My Department is currently exploring with housing authorities whether the functionality of PASS can be enhanced to produce data such as that outlined in the Question.