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If the measured area of the enclosed balcony is half of the semi-enclosed projection area, the bay window is not included in the construction area.
In the previous code, the balcony of a building should be calculated as 1 2 of its horizontal projection area, but now, as long as the balcony is within the main structure, whether closed or open, it will be counted as the area. >>>More
It's very complicated, and it also involves the issue of structural safety. >>>More
Whoever you sign the contract to buy the house is responsible for. The builder is carrying out the construction according to the drawings and the requirements of the real estate developer, and if the builder is suspected of shoddy, the real estate chamber of commerce will hold the builder responsible.
Entrance doors and windows are not necessarily the responsibility of the builder, some are the responsibility of the developer, anyway, the result should be doors and windows.
Usually these things will be written in the purchase contract, such as giving away a balcony and the like. If it is not written, of course it will be counted in the building area.