Mortgage rates spike in biggest 1-week jump since April

Mortgage rates rose sharply last week, a new challenge for beleaguered house hunters and potential refinancing candidates.

The average rate on a 30-year fixed-rate loan jumped to 6.32% for the week through Wednesday, according to Freddie Mac, up from 6.12% a week earlier. It’s the biggest week-over-week increase since April.

Average 15-year loans rose to 5.41% from 5.25%.