• Transition to new service from 1 October 2021

    From 1 October, cases in Wales will be handled by the new Welsh Government Planning and Environment Decisions Wales (PEDW) service.

    As of the 16 September, we are not able to publish new material on this website. You can still send correspondence relating to ongoing DNS applications by e-mail and post to PEDW.

    See the announcement on GOV.UK for more information.

Developments of National Significance

A Development of National Significance (DNS) is a type of planning application for a large infrastructure project of national importance in Wales. Here you can find out about proposed DNS applications. This site is managed by the Planning Inspectorate.


A list of all the Developments of National Significance that have already been submitted and those we are expecting to be submitted.


Information about this website.


An overview and detailed guidance on the Developments of National Significance application process

Contact us

How to get in touch with The Planning Inspectorate.

Applications open for comments

There are currently no applications open for comment. When there are they will be listed here.