Do I need to inform the property management company in advance to decorate the house?

It is absolutely necessary. The house decoration must be registered with the residential property management office, and the decoration permit is obtained. The decoration process is supervised by the property. Here, I emphasize that the supervision of house decoration belongs to urban management, and the property only assists the urban management department to supervise, and has no law enforcement power, but the owners should also reasonably decorate according to the relevant national standards and regulations.