There are usually several purchase contracts, one of which is handed over to the Housing Authority. Different local policies have different requirements. Under normal circumstances, it is really necessary to provide the original loan contract to the Housing Authority for the record. This will not be used for other purposes. Don't worry, if you need contract evidence in the future, just take out the contract from the Housing Authority. So to sum up, it is reasonable to apply for real estate license and submit the original contract.

Legal basis: Measures for the Administration of Commercial Housing Sales Article 34 A real estate development enterprise shall, within 60 days from the date of delivery of commercial housing, submit the materials required for the registration of housing ownership to the real estate administrative department where the housing is located. Usually, it takes about 20 to 60 days for the competent department to handle the initial registration, so two or three months after the house is closed, you can ask the developer about the initial registration, or you can go to the local real estate transaction information website to inquire.