Glossary
Non-material amendment
A non-material amendment is a small change to an existing planning permission that the council agrees is not material. It uses a short application route rather than a fresh full application.
If the change is material, you need a variation or a new permission instead.
Amendment routes and names differ by nation; ask the local planning authority which form to use.
Official source: Flexible options for planning permissions (GOV.UK). Checked 27 October 2026.