Because the developer can't get the state-owned land use permit without obtaining the construction land planning permit and the construction project planning permit, and can't get the pre-sale permit without obtaining the above two planning permits and construction permits. When the developer obtains the pre-sale permit, it can prove that the project has passed the government's approval in planning, engineering and land use, and has the qualification to enter the market for commercial housing development.
Five Certificates: A real estate developer should have a construction land planning permit, a construction project planning permit, a construction project construction permit, a state-owned land use permit and a commercial housing sales (pre-sale) permit for short.