When are Bat Hibernation Roost Surveys Required?
Where the Bat Roost Potential Survey finds no potential for hibernating bats, no further surveys will be necessary. However, where the Bat Roost Potential Survey identifies potential/suitability for hibernating bats further Bat Hibernation Roost Surveys will be required to confirm the presence or likely absence.
Basements offer ideal conditions for hibernating bats 
Basement bat roost in N.Ireland
What is a Bat Hibernation Roost Survey?
These surveys involve the inspections of buildings and trees under site-specific licence from the Northern Ireland Environment Agency (NIEA). They are conducted in accordance with the Bat Conservation Trust (BCT) Survey Guidelines. These surveys may also include the use of static bat detectors deployed for a minimum of 2 weeks in each of the winter months (December – February) to help establish if hibernating bats are present. In addition temperature and humidity
How long does a Bat Hibernation Roost Survey take?
When considering the completion time required for Bat Hibernation Roost Surveys it is important to bear in mind the need to collect information throughout the winter period (Dec-Feb inclusive), following NIEA (available here) and BCT survey stipulations:
Final reports are usually available in approximately 2 weeks following the last survey. However, this may vary depending on how big the site is, how complex the layout is, the level of bat activity recorded and how busy we are.
Cost: From £800*
*NOTE: The costs quoted above may vary for larger or more complex sites or for greater travelling distances. All quoted figures are exclusive of and are subject to VAT.