Generally, there are two types of commercial housing pre-sale contract (auction) and commercial housing sales contract (existing house).
The difference between the two is that:
The pre-sale contract is adopted for the pre-sale of commercial housing. After the house is completed and delivered for use, the buyer can directly handle the transfer formalities after paying all the house price.
Commercial housing sales contracts are applicable to the sale of existing commercial housing (commercial housing with property right certificate after completion and acceptance).
Legal basis: Article 469 of the Civil Code of People's Republic of China (PRC), the parties may conclude a contract in written form, orally or in other forms. Written form refers to contracts, letters, telegrams, telexes, faxes and other forms that can tangibly express the contents contained. A data message that can tangibly express its content through electronic data interchange, e-mail, etc. , and can be retrieved at any time, are considered in writing.