Why Local Planning Authorities Request Bat Surveys
When planning applications involve older buildings, roof works, tree removal, or changes to the surrounding landscape, local planning authorities may request a bat survey. This is a routine part of development in Scotland and helps ensure that wildlife is protected while projects move forward safely.
This blog explains why these surveys are requested, what they achieve, and how they support both development and conservation.
Bats often live in places people don’t expect
Bats use a wide range of structures for shelter and raising young. These include houses, bridges, agricultural buildings, churches, stonework, trees, and gaps under roof tiles. Because bats can hide in very small spaces, their presence is not always obvious.
Planning authorities request surveys to make sure that potential roosts are identified early, especially when proposed work could affect features that bats commonly use.
Surveys help prevent accidental harm
Bats and their roosts are protected under Scottish law. This means they cannot be harmed or disturbed, and their roosts cannot be damaged or destroyed. Planning authorities do not request surveys to stop development. Instead, they ask for surveys so that projects can be designed to avoid harming bats.
Surveys provide clear evidence about how a site is used, allowing safe, practical decisions to be made before work begins.
Surveys ensure that planning decisions are well informed
Planning authorities rely on accurate information to assess the environmental effects of a proposal. A bat survey provides this information by showing:
whether bats are present
which parts of the site they use
whether a roost is present
how bats move through the surrounding area
With this evidence, the planning authority can decide whether the development can proceed as proposed or whether minor adjustments are required.
Most projects continue with simple adjustments
In many cases, surveys reveal that small changes are enough to protect bats. These may include altering lighting plans, adjusting the timing of work, or retaining important features such as roof voids or mature trees.
Surveys are not a barrier to development. They are a tool that allows development and wildlife protection to work together.
When licences are required
If a project is likely to disturb bats or affect a roost, a licence may be needed. Licences allow necessary work to continue as long as plans show how bats will be safeguarded. This blog does not provide legal advice, but it is important to know that licensing is a normal part of ecological planning and does not prevent projects from moving forward.
Why early survey planning is important
Bat surveys can only take place between 1 May and 30 September, and at least one activity survey must be completed before the end of August. Because these surveys must be spaced out by several weeks, early planning helps avoid delays.
Local authorities request surveys early so that applicants have enough time to gather the information needed for planning decisions.
Supporting responsible development across Scotland
Planning authorities are not trying to make development more difficult. Their role is to ensure that Scotland’s wildlife and habitats are protected as towns and infrastructure evolve. Bat surveys help achieve this in a way that is fair, evidence based, and practical.
By understanding why surveys are needed, applicants can plan projects more confidently and contribute to Scotland’s wider conservation goals.
References
Bat Conservation Trust 2023. Bat Surveys for Professional Ecologists. Bat Conservation Trust, London.
NatureScot 2020. Bats: Licensing and Guidance. NatureScot, Inverness.
Scottish Government 2019. Wildlife Crime and Protected Species. Scottish Government, Edinburgh.