Habitat Regulations Appraisal (HRA)

What is a HRA?

Under the Habitats Regulations, all competent authorities must consider whether any plans or projects will have a ‘likely significant effect’ on a Natural 2000 designated site. 
An HRA must be:
  • reasoned and recorded throughout to provide an audit trail of the competent authority’s thinking
  • based on and supported by evidence capable of standing up to scientific scrutiny
The assessment should be based on – and supported by – evidence that can stand up to scientific scrutiny.

When can an HRA be undertaken?

An HRA can be undertaken at any point of the year.


As outlined above, the HRA is based on/supported by scientific evidence. Where appropriate scientific data does not exist, formal surveys are likely to be required (for example bird surveys to assess the effects of a project on a Special Area of Conservation (SPA) to allow for a conclusion to be made on whether the project is likely to affect the integrity of the SPA designation).


Time constraints may occur depending on the species/habitats requiring surveys as part of the HRA.  

About our HRA service

R & D Ecology are able to provide early advice to our clients on whether HRA assessments are likely to be required, as well as the information required by the competent authority to complete the formal assessment. We have particular experience of undertaking this work in relation to Special Protection Area (SPA) designated sites.

Arrange a HRA today

Please feel free to get in touch to discuss your project requirements

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