"Shenyang villa owners and property bar, the built house will be demolished when it is said", is the property construction plan reasonable?

Buying a house is a top priority for anyone, mainly because after buying a house, we will basically live in it all our lives, so we will choose carefully when buying a house, especially when some big houses invest a lot of money in the early stage. After buying a house, the whole family naturally lives in it, so they will think more about it when buying a house, but no matter how carefully they think about it, they can't help being fooled by the sales consultant. It is not the key to find out whether the building of the property is reasonable. The key is why the developers didn't come forward to solve this problem in the whole incident. You should know that the owner bought the house from the developer.

When buying a house, the developer must have made a commitment to it, although the area of this villa is 137 square meters. However, in the process of purchase, developers will transform many places, and some places are not included in the area, so that the effect of using 300 square meters can be achieved. If this is the case, then many people are willing to buy such a house. After all, they are very satisfied with the space they use. However, after buying the property, who would have thought that the property had actually inserted a thick stick, saying that the houses they bought were illegal. Since it is illegal construction, why did the developer promise to give it to them at the beginning and did not encounter any problems in the process of buying and selling? Now that everyone has moved in, the property suddenly stood up and asked them to tear down the house they had built before. And there is still a problem in the process of communication, that is, the property said that the house can still be seen again, but according to their plan. When did the industry have such rights? You know, building a house must be approved by a design institute. So we can see from here that the construction scheme of the property, whether reasonable or unreasonable, is illegal. The core question is why the developer promised to give the owner a 300-square-meter house from the beginning.