Where would a borrower look to determine if the mortgage lender intends to service the loan or transfer it to another lender?

The intend of the borrower when he/she's acquiring the money from the lender will usually be written at the mortgage servicing disclosure statement.

On top of the intend, both lender and borrower usually also specify the terms that applied to both borrower and lender in case of conflict resolution within the m ortgage servicing disclosure statement.