If the house purchased by mortgage payment is still under mortgage and the relevant procedures have been completed, how can I inquire about the relevant information of the property ownership certifica

You just need to call your loan bank,

The real estate license of the loan is mortgaged in the bank.

If you pay off in advance, just go to the bank to get it.

The real estate license belongs to the direct management of the local housing authority.

I hope I can help you.