This page contains links to the Planning Portal website.

Explore the interactive semi-detached house for guidance on many common householder projects, including home microgeneration, in Wales.

Explore the interactive terrace for guidance relating to flats, shops & basements as well as many common householder projects, in Wales.

Your responsibilities

With all building work, the owner of the property (or land) in question is ultimately responsible for complying with the relevant planning rules and building regulations.

If your project is not a permitted development you can make a PLANNING APPLICATION Read more about planning applications.

For peace of mind and proof that your work is lawful you can apply for a LAWFUL DEVELOPMENT CERTIFICATE (LDC) Read more about LDCs.

If you are completely sure your project is permitted development you can START YOUR WORK Read important advice before starting work.