To sell future seasons'income is intrinsically more risky, both for the lender and the mortgager.
From the guardian.co.uk
We didn't want to put any money down for a home, and we eagerly sought out a mortgager to feed our irresponsibility.
From the charlotteobserver.com
With your agent's assistance, you may now be ready to submit a written offer to the seller's agent, along with the prequalifying letter or preapproval letter from your mortgager.
From the theepochtimes.com
More examples
Mortgagor: the person who gives a mortgage in return for money to be repaid; "we became mortgagors when the bank accepted our mortgage and loaned us the money to buy our new home"
One who uses property they own as security for a loan, The borrower in a mortgage agreement
The party who borrows money with his property as security.
The owner/borrower under a mortgage/deed of trust, also referred to as borrower and grantor in the deed of trust or mortgage.