Preliminary Bat Roost Inspections (PRI)

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What do I need to know about a Preliminary Roost Inspection (PRI)?

A PRI is usually undertaken as part of the Initial Ecological Assessment when there are buildings (or mature trees) on site that may be impacted by the proposed development works.

A PRI is an initial inspection of the building / tree to assess the suitability for it to contain bats, which are a European and locally protected species. Lots more information on bat surveys can be found on the PDF download button below.


What does a Prelimenary Roost Inspection involve?

Further Information about bat surveys


The States of Jersey Department of the Environment require all bat surveys to follow the Bat Conservation Trust Best Practice Guidelines (Collins 2016) when undertaking surveys for bats. These guidelines can be found here or our summarised version of this can be found on the PDF link below.


Can this survey be completed this time of year?

This survey can be undertaken at ANY TIME OF YEAR and may be required as part of your Planning Application

What happens next?

If the PRI shows no evidence or suitability for a building (or mature tree) to contain bats, then a simple report is written which may include some precautionary mitigation measures.

If evidence of bats is found or the buildings show ‘suitability’ for these species, then further surveys may be required – see Protected Species Surveys. Further surveys are typically restricted to certain times of the year so it is important to determine if they are needed as early as possible to prevent delays to your development project.


See what some of our clients have to say about our ecological services

Whilst having any Planning Condition imposed on one’s proposed development plan can be a source of frustration, Nurture Ecology helped us to navigate the best way to meet the requirements of the Department of the Environment. This was achieved in a timely and pragmatic way, and I have no hesitation in recommending them to either assist with ecological planning conditions or more general requirements.

Peter Mossop, Honestead, St.Ouen

Give us a call for no obligation advice and quotation! (01534) 481211

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The more information we have about your project the easier it will be to answer any and all of your questions regarding price and availability.

  • Tel01534 481211
  • Visit our officeNurture Ecology Ltd, The Barn, La Ruelle du Coin, St Ouen, JE3 2LL
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