Excuse me, in the process of second-hand housing transaction, how to calculate the tax of double-housing with two real estate licenses?

Large huxing split into two sets of small huxing, respectively, for two real estate licenses. The impact on property buyers is: 1\ When buying the first suite, it was already the owner of the second suite. If you plan to buy another suite, it is the third suite ... that is, if you want to buy another suite, you can't get a bank loan in an area with high housing prices. On the other hand, the room that needs to be divided must be a large apartment, so buy a large apartment. If you can afford more than one big house, you probably don't care whether you have a loan or not. 2\ division, you will become the owner of two houses invisibly, and the tax expenditure will increase. If the country really introduces property tax, then the third suite will be levied according to the tax rate of vacant or rented houses, and you will not enjoy the property tax concessions for self-occupation. If there is only this big house (that is, two separate suites), it seems that there is no need to pay more taxes. For the original house, the owner who bought a big house here will have some losses in property tax. However, some people question the view that the number of houses should be taxed, and suggest that it should be determined according to the per capita living area. In this way, the owner of a big house must pay more taxes if his family is small.