Use the 'Non-material amendment of an existing planning permission' application form from the Planning Portal.
Fill in all relevant parts of the form.
Sign and date the application form before you submit it.
If you're not able to submit your application online, download copies of all application forms from the Planning Portal website.
Why we need this
This is a national requirement set out in The Town and Country Planning (Development Management Procedure) (England) 2015 (as amended).