Types of development requiring bat surveys
A bat survey should be requested when seeking planning permission for the types of development and proposals listed as follows:
Conversion, modification, demolition or removal of buildings.
- Agricultural buildings (e.g. farmhouses, barns and outbuildings) of traditional brick or stone construction and/or with exposed wooden beams
- Buildings with weather boarding and/or hanging tiles that are within 200m of woodland and/or water.
- Pre-1960 detached buildings and structures within 200m of woodland and/or water.
- Pre-1914 buildings within 400m of woodland and/or water.
- Pre-1914 buildings with gable ends or slate roofs, regardless of location.
- Buildings located within or immediately adjacent to woodland and/or immediately adjacent to water.
- Dutch barns or livestock buildings with a single skin roof and board-and-gap or Yorkshire boarding if, following a preliminary roost assessment the site appears to be particularly suitable for bats.
Development affecting built structures
- Tunnels, mines, kilns, ice-houses, military fortifications, air-raid shelters, cellars and similar underground ducts and structures; unused industrial chimneys that are unlined and brick/stone construction.
- Bridge structures, aqueducts and viaducts (especially over water or wet ground)
Floodlighting of valuable habitats or structures
- Churches and listed buildings, green space (e.g. sports pitches) within 50m of woodland, water, field hedgerows or lines of trees with connectivity to woodland or water.
- Any building meeting the criteria listed above.
Felling, removal or lopping of woody vegetation
- Field hedgerows and/or lines of trees with connectivity to woodland or water bodies.
- Old and veteran trees that are more than 100 years old.
- Mature trees with obvious holes cracks or cavities, or which are covered with mature ivy (including large dead trees).
Proposals affecting water bodies
- Development in or within 200m of rivers, streams, canals, lakes, reedbeds or other aquatic habitats.
Proposals located in or immediately adjacent to valuable geological formations
- Quarries or gravel pits.
- Natural cliff faces and rock outcrops with crevices or caves and swallets.
Proposals for wind farm developments
- Multiple wind turbines
- Single wind turbines
All proposals where bats are known to be present
- This may include proposed development affecting any type of buildings, structures, feature or location.
- Where large scale development is proposed less than 10km from a roost of international importance.