planning permission
US /ˈplænɪŋ pərˌmɪʃən/
UK /ˈplænɪŋ pərˌmɪʃən/

1.
official permission from the local authority for new buildings or changes to existing buildings
:
•
We need to apply for planning permission before we can start construction.
•
The council denied their request for planning permission for the new extension.