Our impact risk zone maps accurately predict newt presence through the analysis of habitat suitability in each area. They are remodelled by experts every five years to ensure they are kept up to date.

The maps are the accepted statutory guidance that local planning authorities must take into account when considering the risk of development for great crested newts. They provide certainty to developers as they can quickly determine whether they need to take action with regards to newts.

Our colour coded zones indicate the likely presence of great crested newts —red being the most important area for great crested newts (and therefore with the highest potential impact) and white indicating a low probability of their presence.

Under the District Licences, each development site is treated according to the highest risk zone within the development site boundary.

The risk zones explained

Black – nationally or regionally important site for great crested newt – excluded from development impacts under the District Licence Scheme
Red – highly suitable habitat – the most important areas for great crested newts
Amber – suitable habitat – great crested newts are likely to be present
Green – moderate habitat suitability – great crested newts may be present
White – low habitat suitability – low probability of great crested newt presence

For more information on how our impact risk maps are expertly modelled visit our FAQ page or get in touch to find out exactly what impact risk zone your site falls within.

Impact Risk Map downloads