Legal analysis: it is definitely abnormal not to sign the down payment. The normal process of buying a house is: down payment (signing subscription agreement)-down payment (signing purchase contract)-Housing Authority for filing. There are three situations in which you may buy a house without signing a contract: 1, and the developer has not obtained the pre-sale permit for commercial housing; 2. The developer has no development qualification at all; 3. The developer was suspended by the Construction Committee for some reason. It is illegal and incorrect to buy a house without signing a house purchase contract. Buying a house generally requires a contract first, then a down payment, and then whether all the documents of the developer are complete. Therefore, when buying a house, we must be cautious and not blindly give a down payment. Only by signing the contract first can the legitimate rights and interests of both parties be protected by law.

Legal basis: Article 119 of the Civil Code of People's Republic of China (PRC), a legally established contract is legally binding on the parties.