1. If these two people are husband and wife and the owner is absent, the non-owner can go to the local construction committee (to the embassy abroad) to open a power of attorney. Then, prepare the relevant information and you can go through the formalities.
If these two people are not husband and wife, it will be more troublesome. You can entrust the lender to handle the understanding mortgage. However, when doing notarization and mortgage registration, the owner also needs to come forward.
I am a mortgage consultant of Beijing Qiang Sen Guarantee Company. If you have any questions, please contact me!