Balconies provide an area of outside space. They can help to provide a building with light and ventilation.[6] In addition to functioning as an outdoor space for a dwelling unit, balconies can also play a secondary role in building sustainability and indoor environmental quality.
Looking at a Group R-2 apartment building with identical residential floor plans consisting of hundreds of residential units. Each of the units has a small (50 ft2) balcony accessed via a sliding door from the unit.You are correct, the area of each balcony would be included.

Windows and balconies in the design of a modern building. - R731NX from Alamy's library of millions of high resolution stock photos, illustrations and vectors.

2. Comfortable and Efficient Residential Units. The residential components of mixed-use buildings are designed with functionality and comfort in mind. Modern floor plans optimize space utilization, offering residents well-lit living areas, functional kitchens, and private balconies.

As we can see from the illustration, Residential Unit Balconies Included In Building Area has many fascinating aspects to explore.
No, a balcony is not included in the carpet area of a property. Carpet area is the real usable floor space within the walls of an apartment, excluding balconies, terraces, common areas, and walls. But the built-up area consists of spaces like balconies and terraces...
More than 550 damaged balconies had been found by Cladding Safety Victoria during inspections for flammable cladding, as of October 2022. The authority is concerned the issue is widespread in unit blocks across Australia and not just confined to buildings that might have cladding issues.