Robert McLister·General·November 25, 2008Prime Mortgages (aka. “A” Mortgages) “Prime” is a classification of lending based on the payment risk that the lender faces. Prime mortgages (also known as “A” deals) entail lower chances of the borrower defaulting than non-prime (aka., sub-prime or “B”) mortgages. Partial Source: CAAMP Like news like this?Join our CMT Updates list and get the latest news as it happens. Unsubscribe anytime. SUBSCRIBE! Thank you for subscribing. One more step: Please confirm your subscription via the email sent to you.