My Department publishes a wide range of housing and planning statistics on its website and details of the social housing units provided in individual local authority areas for the period requested can be found on the ‘Social Housing Output’ tab in the ‘Social and Affordable Housing’ statistics table at the following link:
http://www.environ.ie/en/Publications/StatisticsandRegularPublications/HousingStatistics/.
General statistics on local authority housing stock are published annually by the Local Government Management Agency and are available at the following link:
http://www.lgma.ie/en/service-indicators-local-authorities-2013.
The information requested on a constituency basis is not available in my Department.