Applications for purchase mortgages surged last week as FHA borrowers rushed to get their applications in before April 1, when higher FHA annual insurance premiums took effect, according to the Mortgage Bankers Association’s latest weekly survey of mortgage loan applications. The boost in total purchase applications for the week ending March 29 was fueled by a nearly 7.0 percent increase in government-backed purchase applications, the MBA noted. “This [increase] was likely driven by borrowers applying for loans prior to the scheduled increase in FHA premiums that took effect on April 1,” said Mike Fratantoni, the MBA’s vice president of research and economics. “On a year-over-year basis, purchase applications are up about 4 percent, in line with the trend we are seeing in home sales volume.” The 10 percent annual premium increase, the third in two consecutive years, applies...