The hazel dormouse is fully protected by law against killing, capture, injury and disturbance, and their habitats are protected against damage, destruction or obstruction. Dormice are associated with well structured woodland and species rich hedgerows. If these habitats are present on a site then a dormouse survey is likely to be required.
Dormouse surveys involve instating nesting tubes and boxes in suitable habitats around the site. The tubes and boxes are checked on a number of occasions throughout the year to look for evidence of use by dormice such as droppings, nests and feeding remains. In certain situations searches for gnawed hazel nuts can also be used to identify the presence of dormice.