A Phase 1 Habitat Survey is the standard technique for classifying and mapping UK habitats, developed in the 1970’s by the Joint Nature Conservation Committee. This type of survey standardizes the recording of habitat types and includes target notes on ecologically important features of a site. A Phase 1 Habitat Survey can be carried out at any time of year, but it is better and more accurately done in spring or summer when vegetation is more readily identifiable.
The phase 1 habitat survey consists of:

  • Desk study – obtaining pre-existing ecological data relating to the site
  • Field survey
  • Written report
  • Map – produced to JNCC standard phase 1 habitat survey classification. This classifys the basic vegetation types and shows them in a colour coded schematic format.

An Extended Phase 1 Habitat Survey is slightly more detailed and includes surveying the site for the potential presence of protected fauna and flora species or habitats.
The results from an extended phase 1 habitat survey may highlight the need to carry out further, protected species investigations, which may be subject to seasonal constraints (See Survey Season Guidelines).