Is it reliable to sell the house at home and say that the owner can't live abroad and transfer ownership at the end of the year?

Not reliable. When the owner is in a foreign country, there are risks in the transfer of real estate. In the house transaction, the owner can't sign at the scene for various reasons, such as physical reasons or other reasons, so he can only let his family or friends sign the transfer. The client must have a notarized agent legally recognized by the client, and the owner's agent can handle the relevant transfer procedures.