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A Preliminary Roost Assessment (PRA) is an ecological survey used to assess whether bats are likely to be present within a building, structure or tree. It is often required to support planning applications where development may affect potential bat roosting features.
Our licensed ecologists carry out Bat Emergence Surveys (BES) to determine whether bats are roosting in buildings, trees, or other structures affected by your development.
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If your project involves works to a building or tree and you’re unsure whether a bat survey is required, we can help. Contact Ecology Surveys UK to discuss your site and arrange a Preliminary Roost Assessment.
A Preliminary Roost Assessment (PRA) is an ecological survey used to assess whether bats are likely to be present within a building, structure or tree. It is commonly required to support planning applications where works may affect potential bat roosting features.
A PRA helps identify legal constraints early and confirms whether further bat surveys are required.
These surveys follow Natural England and Bat Conservation Trust (BCT) guidelines, ensuring full compliance.
A PRA is often required where development works could impact structures or habitats suitable for bats. Local planning authorities frequently request a PRA before validating or determining an application.
Submitting a PRA early can help avoid planning delays and unexpected survey requirements.
A Preliminary Roost Assessment involves a daytime inspection carried out by a qualified ecologist. The survey focuses on identifying features that could support roosting bats and assessing surrounding habitat suitability.
The findings are used to determine bat roost potential and next steps.
If your project involves works to a building or tree and you’re unsure whether a bat survey is required, we can help. Early advice often saves time and prevents delays later in the planning process.
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