What makes up a good credit score? According to those Wyndham Capital Mortgage surveyed, 56 percent could identify what WCM considers to be an excellent score (720+)

This is not to say that lower scores can't qualify.  Ideally 620+ is needed to obtain an admirable mortgage.  If scores are below this, there would need to be compensating factors to be eligible.

Want more details regarding credit scores,? See Video:  

»Credit Scores Explained

A Credit Score isn't the only factor in determining your guaranteed rate and options available.  See Article:
»How your Mortgage Rate is Determined