Applications are submitted to the Planning Inspectorate for assessment and a report must be prepared for the relevant Secretary of State to make the final decision.
Cyflwynir ceisiadau i’r Arolygiaeth Gynllunio i gael eu hasesu ac mae’n rhaid i adroddiad gael ei baratoi i’r Ysgrifennydd Gwladol perthnasol wneud y penderfyniad terfynol.