Legal basis: Article 78 of the Detailed Rules for the Implementation of the Provisional Regulations on the Registration of Real Estate shall submit the following materials when applying for mortgage registration of pre-purchased commercial housing:
(1) Mortgage contract and principal creditor's rights contract;
(2) Pre-sale commercial housing registration materials;
(3) Other necessary materials.
After the pre-purchase of commercial housing is registered as the ownership of the house, the parties concerned shall apply for changing the pre-registration of pre-purchase of commercial housing mortgage into the first registration of commercial housing mortgage.