What happens when a mortgage is fully paid off regarding the lender's interest?

When a mortgage is fully paid off, the lender must release their interest in the property. This means that the lender no longer has a legal claim to the property because the borrower has satisfied the debt associated with the mortgage agreement.

Once the mortgage is paid in full, the lender is required to provide a document, often referred to as a satisfaction of mortgage or release of lien, which officially acknowledges that the borrower has completed all payments and that the lender relinquishes any rights over the property. This release serves to clear the title and allow the property owner full ownership without any encumbrances from the lender.

In contrast, the ongoing interest of the lender would imply a financial stake in the property, which no longer exists once the loan is fully satisfied. Similarly, the borrower does not need to apply for a new loan as they have completed payment on the existing mortgage, nor are they required to vacate the property immediately, as they now hold unencumbered title to it.