Knowledge base
Should I get a Lawful Development Certificate for a pergola?
What an England LDC proves, when it can help, and what it does not replace.
A Lawful Development Certificate is optional, but it can give you a formal council decision that the exact pergola proposal described in the application would be lawful in England. It can be useful when the permitted development position is important to a purchase, installation contract or future sale.
Planning Portal defines an LDC as a legal document stating the lawfulness of an existing or proposed use or operation. For a pergola not yet built, the application must give the local planning authority enough accurate information to judge the proposed work. Plans, elevations, dimensions, the boundary position and roof form should all match what will actually be installed.
The certificate is not planning permission. Planning Portal says permission is still needed for development not covered by the certificate. It also warns that a certificate does not protect a materially changed use. In practical terms, changing the size, position, roof or enclosure after the certificate can take the finished pergola outside the proposal the council assessed.
An informal email from a supplier is not an LDC, and neither is a planning portal calculator result. Apply through the official route or ask the council what evidence it expects. Planning Portal states that a fee applies; use its current fee calculator rather than an old price quoted elsewhere.
Other UK nations use their own planning systems and terminology. nidirect, for example, describes a Certificate of Lawful Use or Development route for a formal Northern Ireland ruling.
Sources
- Planning Portal: Lawful Development Certificate — accessed 14 November 2026.
- nidirect: getting help with planning — accessed 14 November 2026.
Use the planning permission guide first, then see the glossary definition of a Lawful Development Certificate.