House sales contracts cannot be mortgaged. Collateral can be tangible property or registered intangible property. Housing sales contracts are relative, and the mortgagee has no right to ask the debtor to perform the contract, so the contractual mortgage right cannot be realized and has no mortgage effect.

legal ground

Article 394 of the Civil Code

In order to ensure the performance of the debt, if the debtor or a third party does not transfer the possession of the property and mortgages the property to the creditor, if the debtor fails to perform the due debt or realize the mortgage according to the agreement of the parties, the creditor has the right to be compensated in priority for the property. The debtor or the third party specified in the preceding paragraph is the mortgagor, the creditor is the mortgagee, and the property that provides guarantee is the mortgaged property.

Article 395

The following properties that the debtor or a third party has the right to dispose of may be mortgaged:

(a) buildings and other land attachments;

(2) The right to use construction land;

(3) the right to use the sea area;

(4) Production equipment, raw materials, semi-finished products and products;

(5) Buildings, ships and aircraft under construction;

(6) means of transportation;

(seven) other property not prohibited by laws and administrative regulations.

The mortgagor may mortgage the property listed in the preceding paragraph together.