Preliminary Ecological
Appraisals (PEA)
A cost-effective route for your planning application — our CIEEM-registered ecologists keep your project moving.
What is a Preliminary Ecological Appraisal?
A Preliminary Ecological Appraisal (PEA) is a cost-effective tool used to provide a rapid assessment of ecological features actually or potentially present at a site, and outlines solutions to the potential constraints that ecology may represent to a project.
A PEA comprises three main elements: a desk study, an Extended UKHab ('Phase 1') Habitat Survey, and a Report. Our CIEEM-registered ecologists deliver clear, proportionate assessments to support your planning application.
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1
Desk study
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2
Extended UKHab ('Phase 1') Habitat Survey
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3
Preliminary Ecological Appraisal Report
Why does your planning application need a PEA?
Local Planning Authorities routinely require ecological surveys before determining planning applications. Here's why a PEA is essential.
Required by the LPA
Most Local Planning Authorities require ecological survey information before they can determine a planning application, to address any potential ecological constraints to development.
Protected species & habitats
UK law protects certain species and habitats. A PEA identifies whether they are likely to be present and what proportionate action is required to allow development to proceed.
Avoid costly delays
Identifying ecological requirements early keeps your project on programme and can avoid expensive delays or planning refusals.
PEA FAQs
Does my planning application need a PEA?
Most planning applications where development could affect habitats or species will require a PEA. Local Planning Authorities routinely require ecological consideration before determining applications.
How much does a PEA cost?
The final cost depends on site size, location, planning history and habitat complexity. We will provide a competitive quote and confirm fees before any work begins — no surprises.
When can a PEA be carried out?
A PEA can be undertaken year-round, though the optimal survey season for the habitat survey element is April to October. Surveys undertaken in winter are in most instances valid but may need updating in the optimal survey season for complex habitats.
What is the difference between a PEA and an EcIA?
A PEA assesses whether any ecological constraints apply to the development and whether any surveys are required. For most developments it is sufficient for planning, with survey results added if required. An EcIA is typically produced for larger or more complex developments, assessing the overall ecological impacts of the proposal once all surveys have been completed.
What happens if protected species are found?
We will outline proportionate solutions including avoidance measures, mitigation, or recommendations for further targeted surveys. Our aim is always to keep your project moving with minimum delay and cost.
How long does a PEA take to complete?
Timelines vary depending on the time of year, as well as survey and site complexity. We will agree a programme with you at the outset — please make us aware of any deadlines which apply to the work.
Ready to discuss your project?
Our ecologists will review your site details and respond within one working day with a clear, no-obligation quote.