If the online signing of the contract has not been completed, it is relatively simple to change the name at this time, because it does not involve the change registration of the housing management department, which is only equivalent to changing the unregistered contract into a party, and only needs to sign a new contract with the consent of the other party. If the online signing contract has been completed, the other party not only needs to agree to change the name, but also needs to cancel the registration of the housing management department. After cancellation, the newly signed contract will be registered, and the procedure is relatively troublesome. In addition, it should be noted that if it is mortgage to buy a house, and the loan and mortgage procedures of the bank have been completed, the loan contract and mortgage contract should be terminated with the loan bank except for changing the name of the house purchase contract. If the bank has not issued the loan and the bank agrees, both parties can cancel the mortgage agreement. If the bank has issued a loan, it needs to repay the loan in full in the name of the lender after the bank agrees. Therefore, lawyers remind everyone that they must think carefully before buying a house. It's simple to say, it's troublesome to buy a house and change its name, which will waste a lot of time and money.