ecology habitats marine

Renovations to Grade II Listed House

Physon Property

Keystone Ecology were commissioned to undertake surveys and apply for and secure an EPS licence for the renovation of a grade II listed house in Gloucestershire, which included Lesser and Greater Horseshoe summer and hibernation roosts.

What did we do?

  • Designed and implemented a suite of bat roost activity surveys at a large Grade II listed house located at the edge of the Cotswold escarpment.
  • Designed and implemented hibernation surveys to establish bat use of the cellar during the winter.
  • Used baseline bat survey data to assess potential impacts of building conversion and construction/operation of the site as a residential development on resident bat roosts and local bat populations.
  • Designed an appropriate mitigation/compensation strategy including bespoke conversion of an existing outbuilding into a mitigation unit to ensure maintenance of favourable conservation status.
  • Applied for and secured as named ecologist on behalf of the developer, a European Protected Species (EPS) licence in respect of bats and the proposed development.

How did we do it?

  • Careful review of the preliminary bat survey report produced by another consultancy to ensure data could be relied upon.
  • Undertook 2 dusk and 1 dawn re-entry sessions and two hibernation visits using multiple licensed bat surveyors with extensive experience of complex, building surveys to ensure the collection of robust field data.
  • Used infrared cameras to identify exit points and automated static detectors to assess hibernation roost use.
  • Provided the client with regular updates and attended design team meetings to discuss the required mitigation options for inclusion in the EPS licence.

What were the outcomes?

  • All work was delivered in accordance with the programme and budget supplied to the client at the start of the contract.
  • An EPS licence was successfully obtained in respect of the proposed development and the hibernation bat roosts will be retained and unaffected by the development.
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