according to the characteristics of house mortgage, the notary office will require the parties to submit the following documents or materials: the qualification certificate of the subject of house mortgage, such as the personal identity certificate and agency certificate of residents, the qualification certificate of legal person, the identity certificate of legal representative, etc. The condition of collateral, such as name, quantity, quality, location, ownership status, etc.; Housing mortgage contract; List of collateral; Written proof that someone agrees to mortgage the house; Principal creditor's rights contract; Approval of mortgage granted by relevant government departments; Other specified information. The notarization of individual housing mortgage contract refers to a non-litigation act in which a notarization institution proves the authenticity and legality of the housing mortgage contract according to the notarization application of the parties. The establishment of housing mortgages must be registered. When the parties apply for notarization of the house mortgage contract, they should first fill in the notarization application form and submit the relevant necessary materials or documents to the notarization institution. After accepting the application, the notarization institution shall make a good notarization record, and carefully examine whether the materials submitted by the applicant are complete and true, the situation of the parties, the value and rights of the collateral, the way to realize the mortgage right and the liability for breach of contract. It should be noted that when signing a loan contract, the two parties should not violate the relevant regulations on interest payment, that is, the agreed interest should not be higher than 4 times the loan interest rate of commercial banks in the same period. At present, the notarization fee is charged at three thousandths of the loan amount.