For individual bats that become trapped in a house, in the vast majority of cases, no derogation is required. The best course of action is to contain the bat in a single room of the house and try and get it to exit through an open window or door. Further information on what to do if you encounter bats in your home can be found by reading "Bat in Houses Leaflet".
While bats often roost in houses without the home-owner even noticing, a bat colony in a house can sometimes lead to a certain degree of inconvenience or disturbance. In such limited circumstances it is possible to apply for a Domestic Dwelling Derogation (3D) to exclude bats from the premises. Derogations issued will be accessible through the links below in 2025, when available: