If the project has been considered by the planning authority not to require planning consent, you will need to provide evidence from the planning authority to confirm.
Os yw'r awdurdod cynllunio wedi penderfynu nad oes angen caniatâd cynllunio ar gyfer y prosiect, bydd angen i chi ddarparu tystiolaeth gan yr awdurdod cynllunio i gadarnhau hyn.