During construction, indoor decoration is closed during the day and outdoor decoration is open at night. Nobody's looking for you.
If the external decoration works are large, occupy sidewalks or change the structure, you must contact the urban management.
Otherwise, if you install it, I will check it for you, or I will dismantle it or I will be fined.
It is recommended to act first and then act. Urban management is to pinch a soft persimmon.
If your local hooligans decorate gables, when have you seen the city management?