Rates on 30-year mortgages remain unchanged from last week at 6.58%, while borrowing costs on 15-year mortgages dropped to 5.69% from 5.71%, Freddie Mac said.

Rates on 30-year mortgages remain unchanged from last week at 6.58%, while borrowing costs on 15-year mortgages dropped to 5.69% from 5.71%, Freddie Mac said.