My house, we have had an awning for 15 years, no issue, and another awning over the driveway installed three years ago, never any issue, never applied a permit also. Location, PJ. House semi-d, maybe neighbors are all old residents and no complaints.

BTW, the whole stretch of my road, houses always doing minor renovation (up to and including hacking to put a new verandah roof), never seen any permit or signboard also.