My Department's National Parks & Wildlife Service has a role in providing advice to home owners about bats in houses and the options for managing them. The most recent advice leaflet (Bats in Houses: Guidance for Householders) can be found at the following link:
www.npws.ie/sites/default/files/publications/pdf/NPWS%20Bat%20Leaflet%202015.pdf
Where disturbance is being caused by a large bat colony in a domestic dwelling the homeowner may apply for a Domestic Dwelling Derogation Licence from the National Parks & Wildlife Service to exclude bats from the premises.
Each licence application is individually assessed and a licence may be issued outlining the approved actions that may be taken. Details on how to apply can be found at the following link: www.npws.ie/licensesandconsents/disturbance/application-for-derogation-licence.