We are committed to supporting the delivery of sustainable development by working closely and proactively with our partners and customers to help direct development to the most appropriate locations

We are consulted by both planning authorities and developers for our expert advice on likely environmental effects from development proposals. We also advise local planning authorities preparing local development plans.

We seek to ensure that our advice is evidenced based, clear, and consistent to help determining bodies and developers make environmentally informed decisions.

Our consultation topics sets out when we want to be consulted by planning authorities and applicants.

You can find out more about the service we provide to applicants by visiting the “Our service to developers" section.

Check the environmental constraints relevant to your development

You can use the spatial data available on ‘Lle’ to check some of the environmental constraints on our checklist that are relevant to your development.

‘Lle’ is a hub for data and information that was developed as a partnership between Welsh Government and Natural Resources Wales.

Please see below the list of environmental constraints on our development planning checklist you can find on the Lle Portal. Where they are not available on Lle we have provided a link to additional sources where you can find data and information. 

Spatial Data Layers Location of Data

Historic landfill sites

Lle Portal

Main rivers

Lle Portal

Source protection zones

Lle Portal

Nitrate vulnerable zones

Lle Portal

Geological conservation review site

Lle Portal

Protected sites

Ramsar, SAC (includes marine), SPA (includes marine), SSSI, NNR, MCZ, AONB

Lle Portal

National parks

Lle Portal

Flood zone 2

Lle Portal

Flood zone 3

Lle Portal

Flood defences

Lle Portal

Development Advice Map zone C1

Development Advice Map

Development Advice Map zone C2

Development Advice Map

Aquifer designation Wales: bedrock geology and superficial deposits


Groundwater vulnerability Wales: bedrock geology and superficial deposits


Mains sewer line

Available on request through Welsh Water.

European protected species



Submitting your consultations to us

You can submit your planning consultations to one of our development planning advice teams. Their contact details can be found here.

Our responses to consultations

You can view copies of our responses to government and other public consultations in our consultations responses.

See also:

  • Our service to developers
    Find out more about the service we provide at the pre-application stage of your development. This section also provides access to more detailed guidance for a number of environmental topics
  • Nationally Significant Infrastructure Projects (NSIPs)
    Find out more about our role in the consenting regime for NSIPs
  • Marine Planning
    Find out more about our role in marine planning and protecting the marine environment
  • Reporting
    Find out more about how we report on our role within the planning system

Related document downloads

Last updated