What parts does the total construction area of residential district include? How to calculate the total construction area with design drawings?

What parts does the total construction area of residential district include? How to calculate the total construction area with design drawings?

From the exterior wall of each floor, from the plinth line of the bottom floor, there are also awnings, car sheds with awnings for parking, and guard rooms. In terms of building architecture, it is said that the area calculation is cumulative