Is the big tax and small tax of the building subject to the real estate license?

That depends on what tax you have to pay. If it is a second-hand house, it shall be calculated according to the date of deed tax invoice.

Property ownership certificate includes house ownership certificate and house ownership certificate. Generally speaking, the real estate license is the abbreviation of the house ownership certificate, which is a written certificate issued by the real estate registration authority to prove the ownership of the house.

According to China's current housing ownership registration system, housing registration is a legal way to publicize the ownership of urban housing rights.