According to the regulations, only the balcony with cover and maintenance structure (railing) can calculate the area of this floor, which is divided into the following two situations:
A balcony is a closed balcony, which refers to a balcony with glass or plastic-steel windows. However, it must be a closed balcony with planning approval documents or construction drawings approved by the planning department, and the area can be fully included in the construction area.
2. The balcony is unsealed. The unsealed balcony is calculated according to the horizontal projection area of the balcony cover plate in the maintenance structure. If the horizontal projection of the upper cover is less than half of the balcony floor area, the whole balcony is not considered as an area; If the horizontal projection area of the upper cover is less than the balcony floor area but more than half of it, it shall be calculated as half of the horizontal projection area of the upper cover.